1930 Gift of Richard H. Backus May, 1988 0| j i nj O a a m a CD SYNOPSIS T OF THE FISHES OF NORTH AMERICA. * BY S. AND CHARLES H. GILBERT WASHINGTON: GOVERNMENT PRINTING OFFICE, 1882. . Ill PREFACE. In this memoir we have endeavored to give concise descriptions of all the species of fishes known to inhabit the waters of North America, north of the boundary between the United States and Mexico. The classification which we have adopted is essentially based on the views of Professors Gill and Cope, who have, it seems to us, been more fortunate in reflecting nature in their groupings of the fishes than have any of the European systematists. In our arrangement of the families and genera, we have endeavored to avoid, on the one hand, unnatural associations, and on the other, subdivision beyond reasonable limits. Genera to which we have been unable to give precise definition have been rarely adopted. The rules of nomenclature generally recognized by naturalists, and recently admirably formulated by Mr. W. H. Ball, have been followed without deviation, except such as may be due to ignorance of all the facts in any particular case. Most of the present confusion in nomen- clature is due to the neglect of established rules, and the only way out of this confusion is through the rigid enforcement of these rules. There is little hope for uniformity in nomenclature so long as individual prefer- ence or caprice is allowed to affect it. We are under obligations to Prof. Spencer F. Baird, to Prof. G. Brown Goode, and to Dr. Tarleton H. Bean, for many aids, especially in connection with our use of the specimens in the United States Na- tional Museum. To Dr. Bean, in particular, we have been indebted for help of various sorts, including many unpublished notes. To Dr. Theo- dore Gill and to Prof. E. D. Cope, we are indebted for numerous aids and suggestions. Mr. Samuel Garman, of the Museum of Comparative Zoology, has given us considerable assistance on the Elasmobranchs. Mr. Chas. L. McKay, of the United States Signal Service, has revised VI PREFACE. our account of the CV/*//-"/v//»V,r. I'rof. S. A. Forbes, of the Illinois Laboratory of Natural History, lias furnished numerous notes on the r< /v/V/r and Ciiprhihlir of Illinois, i'rof. Felipe I'oey, of Havana, lias given valuable inl'onnatioii in regard to the fishes of the Florida Ke\s. Professor O. P. Hay, of llutler I'niversity, has furnished us manuscript descriptions of specie- new to science. Miss Rosa Smith, Mr. Joseph Swain, and especially Mrs. Susan B.Jordan, have given important per- sonal assistance in the verification of the descriptions in our maim scripts. Finally, \ve may refer to the early encouragement received from Dr. Elliott Cones, \\-hose advice and example led us to undertake to do for American Ichthyology, so far as lay in our power, what Cones* "Key to Xorth American Birds" has done for American Ornithology. A Bibliography of North American Ichthyology is soon to be pub- lished by Professor Goode. We have therefore not attempted to give a list of the works consulted by us. We have endeavored to examine everything pertaining to American Ichthyology. Under the head of each species, enough synonymy has been given to connect this work with other descriptive works, and no more. Ret. i ence is made to the original description of each species, to the descrip- tions in Dr. G itnther's "Catalogue of the Fishqsof the British Museum," and to other works in which special information is given or in which some name different from the one adopted by us is employed. This work was iirst prepared for the press in ]S7<). during which year a portion of it was printed. Since then the printing has been several times interrupted, chiefly by the absence of the authors while engaged in field-work. Jt was finished in September, 1882. The manuscripts imprinted have been from time to time revised, and each part lias been brought up to the date of finally leaving our hands. The fad that the priming has extended over more than three years,— three of the most active years in the history of American Ichthyology, — will account for some discrepancies between the first and last parts of the work, in the Addenda, we have included the species which have been described Since the priming of the accounts of the families to \\hich the\ re- spectively belong. DAVID S. JORDAN. CHAELES H. GILBERT. INDIANA l'.xi\ EESITT, ,. /,/,/., September \-\. PREFACE. VII NOTE. — lu our descriptions the length of the fish is always measured from the tip of the snout to the end of the last vertebra: the caudal fin being not included. The expressions " head 4" or " depth 4" mean that the length of the head, in the one case, or the greatest depth of the body, in the other, is one-fourth of the length of the fish. "Lat. 1." indi- cates the number of scales in the lateral line; when, however, the num- ber of transverse series of scales between the head and the caudal fin is different from the number pierced by the lateral line we have usually given the former number. The measurements given in the text are intended to apply to mature fishes. Young fishes have usually the depth less, the head larger, the mouth smaller, and the eye larger, than adult examples of the same species. In the synonymy of any species, where an author quoted has used the name adopted by us, that name is not repeated. Descriptions not taken from specimens, or at least not verified by us, are, in all cases, credited to the author from whom they have been copied. TABLE OF CONTENTS. Page. Class I. Leptocardii 2 Order A. Cirrostomi 2 Family 1. Branchiostomatidae 7. 1. Branch iostoma Costa 8 1. lanceolatum Pallas. (Addenda) 3, 57, 867 Class II. MarsipobrancMi 3 Order B. Hyperotreta 4 Family 2. Myxinidse 4 2. Myxine L 4 2. glutinosa L 5 Family 2 (6). Bdellostomatidse. (Addenda) 967 3. Polistotrema Gill. (Addenda) 5,867 3. stoutiLock 6,57,867 Order C. Hyperoartia 6 Family 3. Petromyzontidse 6,867 3 (6). Entosphenus GilL (Addenda) •- 7,57,868 4 (5, 6). tridentatus Gairdn 7,57,868 4 (5). Ammoccetes Dum 9, 867 § Lampetra Gray 7,867 7. plumbeus Ayres 8,867 7 (ft), aureus Bean. (Addenda) 868 $ Ammoccetes 9 8. nigerKaf 9,867 8 (b). appendix Dek. (Addenda) 868 6 (7). PetromyzonL 10,867 § Ichfhyomyzon Grd 9, 867 9. argenteus Kirt 10,867 9 (6). MrudoGrd 868 10. castaneusGrd 10,868 $ Petromyzon 867 11. ruarinus L. 11,868 12. dorsatus Wild. (Addenda) 11,868 Class III. Elasmobranchii 12 r Subclass Selacliii 12 Order D. Squall 12 Family 4. Scymnidae 13 8. Echinorhinus Blainv 14 13. spinosus Gmel 14 9. Somniosns LeS 14 14. microcephalus Bloca 15 Family 5. Spinacidae 15 10. Centroscyllium M. & H 16 15. fabricii Reinh - 16 11. Squalus L 16 16. acanthi as L 16 12. Centroscymnus Boc. & Cap 17 17. ccelolepis Boc. & Cap 17 IX X TAI'.LK OF CONTEXTS. • 'la^s III. F.la-mnliranchii — continned. par,e Snlidass Selaehii. 1>. S.piali. Family ii. Scylliidav (Addenda) 17.."- 13. Gin.irlyiiiiistnma M. A; II 18 L8. cirralnm (iai I- 13 (&). Seylli.irliinus Blainv. (Addenda) 58,869 § Cat n I a* Smith. (Addenda) .. ; 869 18(6). venlri.iMis (iarni. (Addenda) 59 18 (c). rotifer Garm. (Addenda) -r,:i Family 7. Cardiariida-. (Addenda) l-.-7n 14. MuHtelns Cuv \\i § 3/imli-Inx .V.I 19. canis Mitch. (Addenda) 19,870 $ rieuracromylon Gill. (Addenda) 870 20. californicus Gill -jo. r/t. -7n 1.'). Triads M. & H ' •„>!> § Trincix -jn 21. sciuitasciatnsGrcl t>ii $ Ji'lihmlriacisGil]. (Addenda) 59,870 22. henlci Gill 20, 870 in. Galeorhinns Blainv •,»] 23. zyopterns.J. & G. (Addenda) 870 17. Galeoccrdo M. & II 21 24. tigrinns M. & II :J1 18. Carcharias Kaf. (Addenda) •_'•_', .-72. '.•( '.7 $ CitrcluirhiHX Blainv •.",' 25. glancns L •_*.' $ Platypodon Gill. (Addenda) (.H~ 26. obsctirns Le S -.>•_> $ Euhimia Gill 22, tid 26 (6). platyodon Poey. (Addenda) .-72 27. ccerulensDck. (Addenda) -7'.1 27 (i). lamiella J. & G. (Addenda) (lit. -7:', 19. Isogomphodon Gill -J'! 28. limliatnsM. & \\ •«>:< 19 (/>). Ilypoprion M. &. H. (Addenda) f,l // '. lin-virnstris 1'oey. (Addenda) .".. ill 21. Seoliodon M. A II 30. terra'-nnvjp Rich i I-'amily >. Sphyrnida- -Jfi 2'J (23). Sphyrna Kaf 2li. -7 I ^ li'oi icrjm ( i i 1 1 -j;, 31. tilmmL 2.r..-7l ::.'. /.yga-na L -,'li I'.-miily '.I. Al.ipiida- -.1 21. Al.tpias Kaf -.'7 Family in. Odmil aspidida-. (Addenda) -j: •J."-. ndnntaxpis A-;. (Addenda.) 27. -7 I 5 I'lii/niiilihitiliin (iill -J7 ::i. litlnralis Milch. (Addenda > 27. -7 I Family 11. Lamnida- •JC. Kuril. 1,'al' . 28 TABLE OF CONTENTS. XI Class III. Elasmobranchii — continued. Page. Subclass Selachii. Order D. Squall. Family 11. Lamnicl;<'. § Isuropsis Gill 28 35(36). dekayiGill 28,874 27. Lamna Cuv -20 37..cornubica Gmel 30 28. Carcharoclon Smith 30 38. carcharias L. (Addenda) 30, 87f> Family 12. Cetorhinidfe 30 29. Cetorhinus Blaiuv 31 39. maximus Gunner T 31 Family 14. Cestraciontidre. (Addenda) 32,62 31. Heterodontus Blainv. (Addenda) 32,875 § Gyropleurodiis Gill 32 41. francisciGrd 1 33,875 Family 15. Notidanidas. (Addenda) 34,62 31 (ft). Hexanchus Raf. (Addenda) 63 41 (6). corinus J. & G. (Addenda) 62 32. Heptranchias Raf. (Addenda) 34, 62 § Natorhynchus Ayres 34 42. maculatus Ayres (Addenda) 62 Family 16. Squatinidae 35 33. Squatiua Dum 35 43. angelus Dum 35 Order E. Rake 36 Family 17. Pristidse 36 34. Pristis Lath 37 44. pectinatus Lath. (Addenda) 37,875 Family 18. Rhinobatidre 37 35. Rhinobatus B. & S 37 § Kliinobatns. (Addenda) 876 45. productus Ayres 38, 876 45 (fZ). lentiginosus Garra. (Addenda) 65 § Zapteryx J. & G. (Addenda) 876 45 (6). exasperatos J. & G. (Addenda) 63 § Platyrhinoidis Garni. (Addenda) 876 45 (c). triseriatus J. & G. (Addenda) 64 Family 19. Torpedinidie 38 36. Torpedo Dum 38 46. occidentals Stor 39 47. californica Ayres 39, 876 36(&). NarcineM. &H. (Addenda) 877 47 (ft), brasilieneis Olfers. (Addenda) 877 Family 20. Raiidae 39 37. RaiaL 39 48. erinacea Mitch , 40 49. ocellata Mitch : 40 50. radiata Donov 41 51. eglanteria Lac 41 52. Isevis Mitch 42 53. gran ulata Gill 42 53 (ft), ornata Garm. (Addenda) 877 53 (c). plutonia Garni. (Addenda) H7S 54. biuoculata Grd. (Addenda) 42, 878 XII TABLE OF CONTENTS. (lass III. Elasiiiohrancliii— continued. Page. Subclass fcklacliii. Order E. Rain-. Family 20. Kaiida-. .".:.. rhina J. & G 43 56. iuornata J. & G. (Addenda) 43,878 57. etellulata J. & G 44 57 (ft), parmifera Bean. (Addenda) '. H7~ Family 21. Trygonida> 4.". 38. UrolophusM. & H 46 58. halleri Coop 46 39. Pteroplatea M. & H 46 5£ . maclnra Le S 46 60. marmorata Coop 47 40. Trygon Adanson. (Addenda ) 47, 6">, 879 61. centrura Mitch 47, 67, 879 61 (&). hastata Dek. (Addenda) 70, 879 62. sayiLe S 48,69,879 63. diptemra J. &G 48,71,879 64. tnberculata Lac 48,66,879 I'.:,. sabinaLeS 49,68,879 Family 22. Myliobatidse •• 49 41. Stoasodou Cantor. (Addenda) 50,879 • '.('>. narinari Euphr 50,879 42. Myliobatis Dum 50 67. freminvillei Le S 51 68. californicus Gill 51 43. Rhinoptera Kuhl 51 69. quadriloba Le S 51 Family 23. Cepbalopteridae 52 44. Manta Bancroft 52 70. birostria Walb 52 Subclass Holocephali 53 Order F. Holocephali . 53 Family 24. Cbimseridse 53 l.'i. ('hima-ra L 54 $ Chimwra 54 71. plumbea Gill 54 $ Hydrolagus Gill 54 72. collici Benu 55 Cla,^ IV. Pisces 73 Subclass Clmndrustci 82 Order G. Selachostomi -x* Family 25. Polyodontidae 82 4ii. P.ilyi.don Lac 83 73. spathulaWalb 83 Order II. Glanioslomi 84 Family 2t>. Aci]>cnseridje 84 47. Aci]>cuscr L 85 74. stiirio L 85 7.".. t ransiiioiitaims K'ich S(i 76. medirostris Ayr<'s 8(5 77. riibicundiiH Le. S 87 78. brevinistris Lc S 87 4-. Seapliirbynchops Gill 88 7'J. platyrliyiiehiis K'af 88 TABLE OF CONTENTS. XIII Class IV. Pisces — continued. Page. Subclass Holostei 88 Order I. Ginglymodi 89 Family 27. Lepidosteidae 89 49(50). Lepidosteus Lac 90 § Lepidosteus 91 60. osseus L . , .. 91 § Cglindrosteus Raf 91 81. platystomus Raf 91 § Atractosteus Raf. (Addenda) 92,880 82. tristceckus Bloch & Sclineider 92 Order J. HalecomorpM 92 Family 28. Amiidae 92 51. AmiaL.... 94 83. calvaL 94 Subclass Physostomi 94 Order K. Nematoguathi 95 Family 29. Siluridae 96 52. NoturusRaf 97 § Sehilbeodes Bleek 98 84. gyrinus Mitch 98 «5. leptacanthus Jor 98 86. miurus Jor 99 87. eleutherus Jor 99 88. exilis Nels 100 89. insignis Rich 1 100 § Noturus 100 90. flavusRaf 100 53. LeptopsRaf. (Addenda) 101,881 91. olivaris Raf 102,881 54. Gronias Cope 102 92. nigrilabris Cope 102 55. Ami urns Raf 102 93. brimneus Jor 103 94. platyceplialus Grd 103 95. xanthocephalus Raf 104 96. melasRaf 104 97. marmoratus Holbr 104 98. catus L 104 98 (&). bracliy acanthus Cope, (Addenda).. 881 99. vulgaris Thonips 105 100. natalisLeS 105 100 (6). bolli Cope. (Addenda) 881 101. erebennus Jor 105 56. Ictalurus Raf 106,880 102. lophius Cope 107 103. albidusLeS „ 107 104. lupus Grd 107 105. niveiventris Cope 107 106. nigricans Le S. (Addenda) 108,882 107. ponderosus Bean 108 108. puuctatus Raf 108 109. furcatus C. & V 109 57. Arius C. & V 109 110(111). felisL 110,882 58. JElurichthys B. & G 110 112. marinus Mitch Ill XIV TAr.LK OF CONTENTS. Class IV. I'i-co— continued. r;i-,-. Si|l>i-l;iss I'liysostollli. Order L. Kvrntu-n.-itlii. ('Addenda) ................................... 111. --J Family 3d. CatoMomida- ........................................... 1 1-j .".'.'( 60, Gl). Ictiol.ns Kaf ........................................ 113. 882 §Si-l<-r<>!/ii. bardus Cojic .......................................... 122 12G. platyrbvnchus Cope .................................. 1 .': ; 127. ^.cnerosus Grd ........................................ 12:; 1 -.'-. virescens Cope ....................................... 124 64. Catostomus Le S .......................................... 124 $ Catostomus .......................................... 12"> 1 2l>. discobolus Cope ...................................... 1 2.'i 130. latipinnis B. & G ..................................... 12."> i:: KI2. longirostris Le S ...................................... 12t; 133. tahoensisGill& Jor .................................. 127 $ Dccactylus Kaf ....................................... 127 134. ura-opiis Jor .......................................... 127 i:::.. labiatus Ayr .......................................... 127 ]'.'.<'•. niai-nniliilna Grd ...................................... 10- 137. occidc'iitalis Ayr ...................................... 12- 13.-. lu-niardiiii - S ........................................ l:;n ('..">. CliaMn isles .For ............................................ i:;l $ (.'Imxiuixtix .......................................... l.'.'J 1 ir.. ii..rus.F<>r ............................................. i:;-j 147. lnwiro.M i i- Cope ..................................... I:1.-,' 11-. lil\:illi> Cope ......................................... 132 TABLE OF CONTENTS. XV Class IV. Pisces — continued. Page. Subclass Pkysostomi. Order L. Eventognathi. Family 30. Catostomidse. 66. Eriuiyzon Jor 132 149. sucetta Lac 133 150. goodei Jor 134 67. Minytrema Jor 135 151. melanops Raf 136 68. Moxostoina Eaf 136 152. papillosum Cope 137 153. velatum Cope 138 154. bucco Cope 138 155. pidiense Cope 138 156. coregouus Cope 139 157. albumCope 139 158. thalassinum Cope 139 159. carpioC. & V 139 160. ruacrolepidotum LeS 140 161. aureolumLeS 140 162. crassilabre Cope 140 163. conus Cope 141 164. anisurum Raf 141 165. pcficilurum Jor 141 166. albidum Grd 141 167. cervinum Cope ,... 142 69. Placopharynx Cope 142 168. carinatus Cope 143 70. Quassilabia Jor. & Brayt 143 169. lacera J. &B 144 Family 31. Cyprinidae 144 71. Campostoma Ag 148 170. ornatumGrd 149 171. anomalum Raf 149 172. prolixumStor 150 173. formosulum Grd '.. 150 72. Acrochilus Ag 150 174. alutaceus Agassiz & Pickering 150 73. OrthodonGrd 151 175. microlepidotus Ayr 152 74. Lavinia Grd 152 176. exilicauda B. & G 153 75. Ckrosornus Raf 153 177. erytlirogaster Raf 153 178. oreas Cope 154 179. eos Cope 154 76. Zophendum Jor 154 180. siderium Cope 155 181. plumbeum Grd 155 77. Hybognathus Ag - 155 182. nuchalis Ag 156,968 182 (&). argyritis Grd. (Addenda) 968 183. amarus Grd 156 184. flavipinnis Cope 156 185. n'grotseuiatus Cope 156 XVI TABLE OF CONTENTS. Class IV. Pisces — continued. Pago. Subclass Physostomi. Order L. Eveutognathi. Family 31. Cyprinidse. 186. placitusGrd 157 187. episcopus Grd 157 188. fluviatilis Grd 157 188(6). punctifer Garm. (Addenda) Hd4 189. melauops Grd 167 78. Coliscus Cope 158 190. parietalis Cope 158 79. Pimephales Raf 158 191. promelas Eaf 158 80. Hyborhynchus Ag 159 192. confertusGrd 159 193. notatusEaf 159 194. superciliosus Cope 160 80 (6). Tirodon Hay. (Addenda) 968 194 (&). ainnigenus Hay. (Addenda) 968 81. Exoglossum Raf 160 195. maxillingua LeS 160 82. Cochloguathus B. & G 161 196. ornatusB. &G 161 197. biguttatus Cope 161 83. Heinitreinia Cope 162 § Hemitremia' 162 198. vittataCopo 162 § Chriope Jor 162 199. bifreuata Cope 162 200. inaculata Hay 162 201. lieterodon Cope 163 84. CliolaGrd 16:5 § Miniellus Jor 202. tuditana Cope 165 203. taurocephala Hay Itiii 204. haematura Cope 166 205. spectruncula Cope H,r, 206. nnbilaForbes Hi7 207. fretensia Cope 167 208. longirostris Hay 167 209. straminoa Cope 167 210. volucella Cope 168 211. microstoma Raf 168 212. lineolataAg 168 213. missuriousis Cope li'.- 214. procne Cope !<;;) $ Clioln 109 215. vigilax B. & G 169 •JK">. chlora .lor 169 $ TiarogaGrd. 170 'J17. cobitisGrd 170 218. simaCope l?o |J Jlntlxiniinx ( Inl 170 ^.M'.t. S:I]III]:IM:I .li.r. A. Urayt 170 2','H. stori-riana Kirt . 171 TABLE OF CONTENTS. XVII Class IV. Pisces — continued. Pago. Subclass Physostomi. Order L. Eventognathi. Family 31. Cyprinidse. 221. hudsonia Clint 171 222. euryopa Beau 171 § Codoma Grd 172 223. irisCope 172 224. jugalisCope 172 225. vittataGrd 172 226. ornataGrd — 173 227. callisenia Jor 173 § Moniana Grd 173 228. gibbosaGrd 174 229. forbesi Jor 174 230. leoninaGrd 174 231. lutrensisB. & G 175 232. deliciosaGrd 175 233. aurata Grd 175 234. formosaGrd 175 § Cyprinella Grd 176 235. umbrosa Grd 176 236. bubalinaB. &G 176 236 (&). rubripinna Garm. (Addenda) 834 237. gunnisoni Grd 176 238. suavisGrd 176 239. lepidaGrd 177 240. billingsiana Cope 177 241. macrostoma Grd 177 242. ludibundaGrd 177 213. notataGrd 177 244. venusta Grd 178 245. calliura Jor 178 246. wbippleiGrd 178 § Photogenis Cope 179 247. analostana Grd..» 179 § Erogala Jor 179 248. galactura Cope 179 249. eurystoma Jor 180 250. nivea Cope 180 251. callistia Jor 181 252. tricliroistia J. & G 181 253. stigmatura Jor 182 254. ccerulea Jor 182 255. chloristia J. & B , 183 256. zonataAg 183 257. xsenura Jor 184 258. pyrrliornelas Cope 184 259. hypseloptera Gthr 184 85. Minnilus Raf 185 § Luxilus Eaf 186 260. cornutus Mitch 186 261. seleneJor 188 262. coccogeuis Cope.. . 18S 263. zonistius Jor 188 Bull. Nat. Mus. No. 1C n XVIII TABLE OF CONTENTS. ('hiss IV. Pisces — rontinurd. Page. Siilid.-iss 1'liysostonii. Order L. Eventognatlii. Family 31. Cypriniila1. § Alburnops Grd 189 •Jill, roseus Jor . 189 265. rubricroceus Cope 189 2G6. lutipinnis Jor. »fc Brayt 190 267. r.blorocepbalns Cope 190 268. cliiliticus Cope 191 269. cbalyba-usCope 191 270. cbrosomus Jor 191 27L xaMiocepbalus Jor 192 272. pluiubeohis Cope 192 273. lacertosus Cope 192 274. shumardi Grd 192 275. blenniusGrd 193 276. cercostigiua Cope 193 $ 193 277. ariommus Cope 194 278. seal irierps Cope 194 279. jejunusForb 194 280. leuciodus Cope 194 281. altipinnis Cope !'.'"> 282. amabilis Grd 195 283. megalopsGrd l;ir> 2H4. bivitrat us Cope 19f> 285. timpanogensis Cope !'"> § Ly thrums Jor 19(5 286. cyanocepbalus Copeland !'.'<'> 287. atripes Jor 197 288. dipliPinins Raf 11'7 289. ardcnsCope 198 290. pniictnlafns Hay 198 291. rubripinnis Hay r> 292. b.-llns Hay 199 293. mat nl iiniH Cope IW 294. lirus Jor 199 V> MhlllilllH 'Jill) 29fi. olifiaspis Copo 200 297. umbralilisdrd 2nd •J'.H. si-rj. liens J. &G 200 299. ].b(.ti.g.-nis ('.>]..- -.'"1 300. Irlrsrojiiis CopO 201 Sti]l)ilix.l()|- , -.'01 ])crci ilin tin us Cope ~'02 riili.-liiis Ag 202 ::nl. ilinriiiiis Uaf •.'()-.' :;M:,. riilirilr.ins Copo 202 30(i. jfiiic/aniis Co|ic 203 :'>(!?. in i erupt cry \ Citpn 'J(i:'. 86. I'rntopotus ('.)]).• -jn:; :;n-. 1 1< mini ii us Cnpn 204 87. Erioymba ('.tin- 204 '. bnn-ata Cope 204 TABLE OF CONTENTS. XIX Class IV. Pisces — continued. Page. Subclass Physostomi. Order L. Eveutoguathi. Family 31. Cyprinidas. 88. Phenacobius Cope 205 310. teretulus Cope 205 311. mirabilisGrd 205 311(6). scopifer Cope 205 312. catostomus Jor 206 313. uranopsCope 200 89. EhinichthysAg; 206,884 314. cataractieC. & V 207,885 315. maxillosus Cope 207,885 316. traiisinontanus Cope 207, 885 316 (&). dulcis Grd. (Addenda) 885 317. obtusus Ag 208,885 318. atronasus Mitch 208,885 318 (,&). badius Garni. (Addenda) 886 318 (c). sirnus Garni. (Addenda) 880 318 (d). meleagris Ag. (Addenda) 886 318 (<;). arenatus Garni. (Addenda) 886 90. AgosiaGrd 208 319. chrysogaster Grd 209 320. metallicaGrd 209 91. Apocope Cope 209 321. carringtoni Cope , 209 322. nubila Grd 210 323. vuluerata Cope 210 324. heushavii Cope 210 325. osculaGrd : 211 326. veutricosa Cope 211 92. Ceratichthys Baird 211 327. biguttatus Kirt 212 328. micropogon Cope 212 329. symmetricus B. & G 213 330. cumiugi Gthr 213 331. luceusJor 213 332. amblopsEaf 214 333. rubrifrousJor 214 334. hypsinotus Cope 215 335. dissi mills Kirt . 215 336. sterletus Cope 210 337. sestivalis Grd 210 338. gelidusGrd 210 339. labrosus Cope 217 340. zauemus Jor. & Brayt 217 341. monachus Cope 217 93. Couesius Jor 218 342. squamileiitus Cope 218 343. dissimilis Grd 21^ 344. prosthemius Cope 219 345. pbysignathus Cope 219 94. Platygobio Gill 219 346. gracilis Rich 219 347. pallidus Forbes 220 XX TABLE OF CONTENTS. ( laaa IV. I'isn-s — rontinuod. Page. Subclass riiysostomi. Order L. Eventu^nathi. Family :!1. C'yprinida1. 95. Semotilns Eaf ............................................ 220 $ Semolilits ............................................ 221 347 (ft), corporalis Mitch .................................. 221 348. thorcanianus Jor ..................................... 221 § Li'iiroximni* I lock .................................... 222 349. Imllaris Kaf .......................................... 222 96. Symuu'trurus Jor ......................................... 222 350. argyriosus Grd ....................................... '.'22 97. Pogonichthys Grd ......................................... 223 351. macrolepidotus Ayres ................................. 223 97 (6). StypodonGarm ........................................ 223 352. signifer Gann ........................................ 224 98. Mylochilus Ag ............................................ 224 353. caurinns Rich ........................................ 224 99. Mylopharodon Ayres ....................................... 225 354. conocephalus B. & G ............. .................... 225 100. Ptychochilns Ag .......................................... 225 355. oregonensis Rich ..................................... 226 356. rapax Grd ............................................ 226 357. harft.rdi.T.&G ....................................... 226 358. lucinsGrd ........................................... 227 101. GilaB. &G .............................................. 227 359. olegansB. & G ....................................... 227 360. robustaB&G ....................................... 228 361. graliiirai B. & G ...................................... 228 362. affinis Abbott ........................................ 229 363. gracilis 15. & G ....................................... 229 364. emorii B. it G ........................... ............. 221» 365. nacreaB. &G-. ........................... 230 i 366. sciiiinnda Cope & Yarrow ............................. 102. Squalius Bon ............................................. 230 § ClnioKtmnHH (Jrd ...................................... 231 3C.7. .-longatus Kirt ....................................... 2:« 368. vandoisiilus C. & V .................................. ~':12 369. estorJor. &, Brayt .................................... •-':'•-' 370. fiindnli.id.-sCrd ...................................... 233 $ Tiu»iiKi (inl .......................................... 2:::1. 371. hydrophlox C<.|..- ......... ............................ 2::3 ::72. ttenia ('<.]>o ........................................... 2:?4 I',?:1., mnnlaiins Copo ...................................... 234 374. liiiiiiholdti Cnl ....................................... 234 :'.7.-,. riiinrrlisj. &G ...................................... 234 :'.7C>. ardc-,ia<-ns('(ipc ....................................... 2:!."i :',?7. |iiiiidnra ('ujn- ........................................ 235 :;7~. niar-arilus Cn|.r ..................................... '-'•'•^ 379. -nia c<.p<- ............................................ 2:;<; nT(;rd .......................................... 236 382. linraliis Cnl ......................................... 23C. : 33. K'-:>'-'!'^<;r:< 113. Cyprinns Linn 254 428. carpio L 254 Family 32. Characinidie 254 114. Tetra'gonopterus Cnv $ Astyanax V. & G 255 429. argentatus B. & G 255 Order M. Isospondyli 256 Family 33. Alepocephalida? 257 115. Alepocephalus Risso 257 430. bairdiiG. &B -J57 Family 34. Albulidse 116. AlbulaGronov 25.- 431. vnlpes L ., 258 Family 35. Hyodontida? 259 117. Hyodon Le Suenr 25'.t 432. alosoidesRaf -':.'. » 433. tergisusLe Sueur 260 434. seleuops Jor. & Bean 260 Family 36. Elopidie 260 118. ElopsL 2»'>1 435. saurus L 2.'• 442. clirysocbloris Iv'af •-'''•'• -1 1::, nii-dii icris Mitcb 266 444. \Ti-nalis Milch ~M'>7 44f>. :i->ii\:i!is Mitch 'Jli7 $ .-tlosn ( ' 1 1 v X.'< 17 1 It'., siipidissim.-i Wils 267 128. Ilan-n-nla C. A V 268 •117. pciisacnla- (J. & B 268 l-.'l. <>| list In incin:i (Jill 26-< •ii-. thrissa Osbeck 268 TABLE OF CONTENTS. XXIII Class IV. Pisces — continued. Page. Subclass Physostomi. Order M. Isospondyli. Family 37. Clupeidse. 125. Brevoortia Gill 269 449. patronus Goode 269 450. tyrannusLatr 269 Family 38. Dorosomatidse 270 126. Dorosoma Eaf .• 271 451. cepedianum Le S 271 451 (ft), mexicanum Gthr. (Addenda) 887 Family 39. Eugraulididse 271 127. Stolephorus Lac 272 452. riugens Jen 272 453. browni Gmel 273 454 (6). mitchilli C. & V. (Addenda) 888 455. perfasciatus Poey 273 456. delicatissinms Grd 274 457. cornpressus Grd 274 Family 40. Alepidosauridse „ 274 128. Alepidosaurus Lowe 276 § Alepidosaurus '. 276 458. ferox Lowe 276 458 (5). sesculapius Bean. (Addeuda) 888 $ Caulopus Gill 276 459. borealis Gill 276 Family 41. Paralepididse 276 129. Sudis Rafiuesque 277 § Sudis 277 460. ringensJ. &G 277 § Paralepis Risso 278 461. borealis Reinh 278 462. coruscaus J. & G 278 Family 42. Scopelidse 279 130. SynodusB. &S 279 § Synodus 280 463. fcetens Linn J 280 464. lucioceps Ayres 281 464 (6). interrnedius Spix. (Addenda) 889 § Trachinocephalus Gill 281 465. myops Forster 281 131. MyctophumRaf 281 466. crenulare J. & G 282 467. glaciale Reiuli 283 Family 43. Sternoptychidco 283 132. Maurolicus Cocco £83 468. borealis Nilss 284 Family 44. Chauliodontidie 284 133. Chauliodus Bl. & Schn 284 469. sloaui Bl. & Schn 285 Family 45. Storaiatidae 285 134. StomiasCuv 286 470. ferox Reiuli 286 135. Echiostoiua Lowe 2«6 471. barbatum Lowe ., 287 XXIV YAI'.LE OF CONTENTS. f'lass IV. Pisces— continued. Pftge. Subclass Plivsosttmii. Order M. Isuspnndyli. Family 4.'i. Stmniatida1. 130. M;il;iciisicns Ay res L'>7 472. uiger Ayres 287 137. Astrnnesthes Ki.-h 2*7 473. niirer Rich 'j,-- < Family 4f>. Saliiuuiid;!- 288 136. Mici-i.stoma Cuvier 289 474. grcenlandicam Reinh 290 140. Mallntus Cimer 291 470. villosns Miill 291 141. Thalrielitliys (.iiard 291 477. i>:ici)ii-us 1,'ich 2i>2 142. OsnitTus IJiuiicus 292 478. tlialrirlithys Ayrcs 292 479. atti-niiatiis Lock 293 480. mordax Mitch 293 481. dentex Steind 294 143. Hypomesus Gill 294 482. pn-tioMis c,\->\ 294 483. olidns I'nlhis 295 144. Argentiua L 295 §Si1u« Iv'fiuli 295 484. svrtmsium G. & B . 295 145. Hyphaloncdrus (Joodo 296 485. dialybeius Goode 296 14(i. Corc^onus Ijuna-ns 296 ^ I'l-nxo},! ,in Milner 297 486(487). \villinin.soniGrd 297 488. qnadrilatoralis Rich 298 489. kfimicotti Milncr 298 $ Cnn-iiiiH a x 299 490. clii|n-if<>riiiis Mitch 299 491. laln-adoricus K'ich 299 4D2. lioyi Cill 299 $ A ri,.;n>xnin ux A ^ 300 4'.):?. nii-rki (ithr ".nil 4'.):5 (/<). lauivti.-i- I'.r.-m. (Addenda) 889 49-J. arl.-di I..-S 301 495. ni-_M-ipii mis Gill 301 « . HlnstiiiiiiK .lur 301 4'. M;. tnllil..-,. K'i.'l, 301 147. Tliymalliis Cm- 302 4!I7. siunil.T i;idi 302 1 I-. St. -iiMdiift l.'i.-li 304 •I'.).-'. iii;ickcn/ii I>'i.-Ii 304 14'.'. < iii.-niliyiicliiis Suck Icy ".ni •I'.i'.i. ^..rl.nscli.-i \\';ill. 305 .MM i. k.-t:i \Viill, 305 ."ill. tcli:i\v\tdi:i Wall.. (Addenda).. 306,890 .Ml-.'. ki-ntM-li W:illi 307 603. ncrka Wall. 308 1.V-. Salinu L.. 309 TABLE OF CONTENTS. XXV Class IV. Pisces — continued. Page. Subclass Physostomi. Order M. Isospondyli. Family 46. Salmonidse. §Salmo 311 504. salarL 311 §FarioC. & V 312 505. irideus Gibbons 312 506. gairdneri Rich 313 507. spilurus Cope 314 508. purpuratus Pall 314 151. Salvelinus Rich 316 § Cristivomer Gill & Jor 317 509. namaycush Walb 317 § Salvelinus 318 510 (511). oquassaGrd 318 512. arcturusGthr 319 513. malma Walb 319 514 (515). fontiualis Mitch 320 516. rossi Rich 321 517. nitidusRich .... 321 518. stagnalis Fabr 321 Family 47. Percopsidte 322 152. Percopsis Ag 322 519. guttatusAg 322 Order N. Haplomi 323 Family 48. Avnblyopsidse 153. Aniblyopsis De K 324 520. spelaeuaDeK 324 154. Typhlichthys Girard 324 521. subterraneua Grd .' 325 155. Chologaster Agassiz 325 522. cornutus Ag 325 523. agassizi Putnam 325 523 (6). papillifer Forbes. (Addenda) 325, 890 Family 49. Cyprinodontidaj 326 156. Jordanella G. & B 327 524. floridiB G. & B 328 157. Cyprinodon Lac 328 525. variegatus Lac 329, 890 526. bovinus B. & G. (Addenda) 890 526(6). eximins Grd. (Addenda) 890 527. latifasciatus Garni 329 528. elegans B. & G 329 529. californiensis Grd 330 530. macularius B. & G 330 531. carpioGthr 330 158. Fundulus Lac 331 § Hydrarflyra Lac 532. majalis Walb.... ., 332 533. swampiuus Lac 534. similisB. & G 333 535. zebrinus J. & G. (Addenda) 333,891 536. parvipinnis Grd XXVI TABLE OF CONTENTS. Class IV. Pisces — continued. Page. Subclass I'liysostoini. Order N. lla]>lunii. Family 49. Cyprinodont ida-. $ Fundiilitx ............................................ 334 537. seraiuolis Grd ........................................ 33-^ 538. diaphanusLe S ................................... .... 334 539. conlluentus G. & B ................................... 334 540. menoiia Jor. & Copcl ................................. :'•:'.."> 541. adiuia J. & G ........................................ 33.1 542. nigrofasriaiiis Lt> S ................................... 33.1 542 (b). ocellaris J. &, G. (Addeiida) ...................... 891 543. heteroclitus L ........................................ :'>:!i; 543 (b). graudis B. &, G. (Addenda) ...................... 891 $ Xenisma Jor .......................................... :'.:',i . 544. cat mat us Stnrer ...................................... 337 545. stellifer Jor .......................................... 337 §AdiniaGr<\. (Addenda) ............................. 892 545 (fc). xeuicns J. & G. (Addenda) ...................... >92 159. ZygonectesAg .......................................... 338 546. rubrifrous Jor ........................................ 33.~ 547. henslialli Jor ......................................... 3138 548. floiipinois Cope ...................................... 33: i 549. lineatus Garm ........................................ 339 550. uotatnsRaf .......................................... 339 552. inurusJ. & G. (Add.-nda) ......................... -'. 340,892 553. dispar Ag ............................................ 341 553(6). craticula G. & B. (Addenda) ..................... 892 554. brarliyptrnis Cope ................................... 341 555. sciadicus Cope ....................................... 342 556. chrysotus Gtbr ......................... : ............. :il-' 557. zonatua Mitch ........................................ 342 558. cingnlatus C. & V .................................... :'•!- 160. Lucania (Jirard ........................................... 342 559. venustaGrd .......................................... 343,893 560. parvaB. & G ........................................ 343,893 561. goodei Jor ............................................ 343 161 Gambusia Pot-y ............................................ "'tt 562(563) (r>fif>). patrucdiH B. & G ........................... 3i:.. -'.»:, 564. arliiigtonia<:.&B .................................... 31.". 566. iiol»ilis 15. \- G ........................................ "-lii 566 (b':. m-iiilis Grd. (A.ldmdaj .......................... -.'4 162. Mollicne^ia L<- Sueiir ...................................... 346 r.C.T. latipinii.-i !-«• S ........................................ 347, -'.M r.C.T (/*). lin.-olala Cnl. (Addmda) .......................... -'I ic,:;. I'.i-ciiia r.i. A s.-bn ....................................... ::)7 ."ii'i-. oonohisna Qrd ......................................... •' 4s 164. Giranliims Poey .......................................... :;l~ 570. (>«•< idnitalis 15. &G ................................... 349 Family 50. DmlrtidflB ............................................... :M9 1C.',. l:iiibra Mil HIT ............................................. 3.10 571. limi Kirt ............................................. 3:.(( ICC. Dallia r,,-:.n ............................................... ::.lo :>7'.'. pi-rt llran ....................................... 351 TABLE OF CONTENTS. XXVII Class IV. Pisces— continued. Page. Subclass Physostomi. Order N. Haplorni. Family 51. Esocidr? 351 167. EsoxL - 352 § picoreUus Eaf 352 573. americanus Gruel 352 574. umbrosus Kirt, (Addenda) 352,894 575. reticulatus Le S 353 § Esox 353 576. Incius Linu 353 § Mascalongus Jor --- 353 577. nobilior Thompson 353 OrderO. Apodes 354 Family 52. Murteuidae 355 168. Mnrsena Linn 355 § Murcena , 355 578. retifera Goode & Beau. (Addenda) 894 § SwferaKaup. (Addenda) 356,969^ 579. mordax Ayres 356 580. ocellata Agassiz 356 580 (&). afra Bloch. (Addenda) 895 580 (c). moringa Cuv. (Addenda)... 895 Family 53. Anguillidje 357 168 (ft). Letharchus Goode & Bean. (Addenda) 896 580 (ft), velifer Goode & Bean. (Addenda) 896 169. Ccecula Vahl 358 $ Calleclielys Kaup. (Addenda) 581. scuticarisG. & B 358 581 (ft), tfres Goode & Beau. (Addenda) 897 170. Mimenopsis LeS. (Addenda) 358,969 582. mordax Poey. (Addenda) 897 583. triserialis Kaup 359,897 583 (b). macrurus Poey. (Addenda) 898 583 (c). chrysops Poey. (Addenda) 898 584. ocellatus Le S 359 170 (&). Ophichthys Ahl. (Addenda) 899, 969 584 (&). longns Poey. (Addenda) 899 171. Myrichthys Girard 360 585. tigriuus Grd 360 171 (b). Myrophis Liitken. (Addenda) 899 5K5 (&).lumbricus J. & G. (Addenda) 899 585 (c). microstigniius Poey. (Addenda) 900 172. Neoconger Girard 586. mucrouatns Grd 360 173. Anguilla Thunberg 361 587. rostrataLeS 361 174. Leptocephalus Gmeliu. (Addenda) 362,969 588. couger L. (Addenda) 362,969 •588 (ft), caudicula Bean. (Addenda) 900 175. Simeuchelys Gill 363 589. parasiticus Gill 363 Family 54. Synaphobrauchidae 176. Syuaphobranclius Johnson 590. pinnatus Gron "^4 XXVIII TABLE OF CONTENTS. Class IV. Fibres— continued. Page. Sultclass Physostomi. Order O. Apodes. Family ">.">. SaccopharyngicUe 365 177. Saccopharynx .Mitdi 365 r.l»l. lla>rellum Mitch 365 Family 56 (a). Nemichthyida) :'<;"> 178. NcmichthysRieh 36(5 592. Bcolopaceus Rich 366 593. avocetta J. & G 367 Sub-elass I'liysoelisti _ 367 Order P. Opisthomi 368 Family 56 (b). Mastacembelidae 368 17 0. Ptilic.hthy s Bean 369 594. goodei Bean 369 Family 56. (c). NotacanthidiB 370 180. Notaeantlms Bloch 370 595. chemnitzi Bloch 370 595 (I), phasganorus Goode. (Addenda) 900 Order Q. Symjntoi;natlii 371 Family 57. Scomberesocidae 371 181. Tylosurus Cocco v. :'.72 596. hiansC. & V 373,901 597. caribbams Le S. (Addenda) 373.1ml 598. notatus Poey 37:: 599. marinus Bl. &, Schu. (Addenda) 374, in i-j 600. exilis Grd :'.7-l 600 (6). gladins Beau. (Addenda) 901 182. Scomberesox Lac 374 601. saumsWalb • ''<•> 602. brevirostris Peters 37."i 183. Hemirhamphns Cnviei 376 $ Jli'inirlinntphns 376 603. uiiifascialiis Kan/ :'7d 604. rosae J. & G :<7(i 604(6). brasilicnsis L. (Addenda) '."i-J v\ J^ii/i'ii/iirlnnii/iliKu Gill 377. im:; 605. Inn<';; 605(6). albiTiiioi.U-s <;.„,(!.• kV I'.i-aii. (Addenda) I"1- 1-1. JIalin-\ pscliis Wrinland -'77 606. rvi.lans I. inn .' 377 I '(>7. olitusirusi ris ( Jlhr 37^ 185. Ex< ><•(!•( us L 378 607. (/;). liillianns Cussr. (Add.-n.la) !'. Muuilidaj 401 195. MugilL 402 »:::.l (««3). albulaL 403 ('>:',."). brasiliensis Ag 403 Family GG. Atheriimhe 404 19G. At herina L 403 636. caroliua C. & V 405 637. veliana G. & B . 405 197. Lenresthes J. &G 405 638. tennis Ayres 405 198. Labidesthes Cope 406 639. sicenlns Cope 406 199. Meuidia Bonap 406,969 640. laciniata Swain. (Addenda) 407,908 641. vagransG. & B 407 642. notata Mitch. 407 742 (/<)• audens Hay. (Addenda) 908 643. beryl Una Cope 408 644. b-sciC. & V. (Addenda) 408,909 645. peninsulse G. & B 408 200. Atherinopsis Grd 409 646. californiensis Grd 409 201. Atherinops Steind 409 647. affinis Ayres 409 Family 67. Sphyraenidie 410 202. Sphynena Bloch 410 648. argentea Grd 411 649. spet Haiiy ". 411 650. guaguaiu'ho C. & V 411 650 (fc). picnda Bl. & Schu , 412 Family 68. Polynnnidw 412 203. Polynemns Linn 413 650 (c). plumicri Lac 413 (-,:,() (d). octnlilisCJill 413 i '..">!. octonciinis Grd 413 Family 69. Amiiiodytid;u 414 204 (205). AimiMi.lyt.-sL 4141(.Mi'.» f,.v.> (653, 656?). amcvicanns DeK 414, -J15, 658. s'|iiali]irt:i Dald. (Addenda) 417,(.td'.i C..V. I. liracliyi^cra Luxve 417 •jn:. mminl.nrhinisiiiM 417 I;C,M. ,,si,.,ii-!iir Cuv Family 71. Klaratida- I'.lacatr Cnv 41 H canada L . 41S TABLE OF CONTENTS. XXXI Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Acauthopteri. Family 72. Xiphiidse 419 209. Xiphias L 419 662. gladiusL 420 210. Tetrapturus Eaf 420 063. indicusC. & V. (Addenda) 420,909 664. [ampins Poey] 420 211. Histiophorus Lacepede 431 665. gladius Brouss 4). elongatus Clarke. (Addenda) 910 Family 74. Scombridae 422 213. Scomber L 423 667. pneumatophorus Delaroche 424, 910 667 (&). colias Gmel. (Addenda) 910 668. scombrus L 424 214. Auxis Cuvier 424 669. thazardLac. (Addenda) 425,911 215. Scomberomorus Lac 423 670. concolor Lock 425 671. maculatus Mitch 426 672. regalisBloch 426 673. caballaC. & V 427 216. Sarda CuvitT 427 674. mediterranea Bl. & Sclin 427 675. chileusis C. & V 428 217. Orcynus Cuv 428 676. alalouga Gmel 428 677. thynnnsL 429 218. Euthynnus Liitken 429 678. alliteratus Eaf 430 679. pelamysL 430 Family 75. Carangidaj 430 219. Trachurus Raf 431 680. picturatus Bowd. (Addenda) 432, 911 681. saurusEa? 432,911 220. Decapterus Bleek 432 682. punctatus Ag 432 683. macarellus C. & V 433 221. Caraux Lac 433,970 684. cruinenophthalnius Bloch 434 685. chrysus Mitch. (Addenda) 435 686. caballus Gthr 435 687. cibiPoey 436 (588. beani Jor 436 689. amblyrhynclmsC. &V. (Addenda) 436,912 690. fallax C. & V 437 691. hippos L 437 222. Blepharis Cuv 438 692. crinitus Akerly 438 XXXII TABLE OF CONTENTS. «». Cl:i-sIY. 1'iscfs — eiMitinnod. Page. Sulx-lass riiyso.-listi. • < >rder I'. A. antlmpt.-ri. Family 7."). ('aran^ida-. X.-J:1.. Sri. -in- l.ac 439 $ y<-hn> 439 093. voiner L 439 $ ronurCuv 440 i '.'.I I. setipinnis Mi toll 440 •J.'l. Chloroscomlinis Grd 440 (i'.C>. chrysnrns L 441 225. Trarhynot us I. no 4-11 <'i9<>. carol in ;is L 442 697. ovatna L. 442 693. goreensis C. & V 442 699. glancns Bloch 443, 970 226. Xam-rat.-s L'af 443 700. ductor L 443 227. Seriola Cuv 444 701. dorsalisGill. (Addenda) 444,912 701 (ft). lalaudiC. & V. (Addonda) 912 702. rivolianaC. &V 444 7H2(6). falcataC. & V. (Addouda) 913 703. candinensis Holb. (Addonda) 445,913 704. zonatn Mil oh 445 705. lasi-iata I'.loch 445 228. Elajjatis ]?onn -1U; 70(). uinnnlatus Poey 4 U'> 229. Oligoplii.--.Cill. (Addonda) 446,913 7('T. oooidont a Us L •. 447 Family 7(i. PomatomidiB - 447 •.»:'.( i. I'niiiatniiiiis J.ac 448 708. saltatrix L 448 Family 7(i (6). Xtnm-ida- II- 2:;i. Xomoiis (_'nv -ir.' 7n'.». gronovii ("Jincl 41! > Family 77. Si rumatoida1. -It'.' 232. Stnniiairiis L 4.MI VN Jtlioinlinn Lac I.M 710. parn L. (Addonda) 4r.l.!U4 *\ ^ I nun ut i us — IM 711. siniilliiiiiis Ayros 451 » I 'urn n »l ii n (Jill 451 712. triaoaiillnis Pock 451 233. Liins l.uw 4:.2 7 1:;. perciformis Mitch ->52 F.-imil) 7-. Lanqn idid;o -1">:'' '.' . I. I. a ii i] iris 1,'rt/ 453 711. .nn Mat us I'.riin •!">:'• 1 'a n lily 7 '.'. ( '.>r\ |»li:i-nida- 454 . Curyplia-iia L l"> I 71.".. i-(|iiisciis L. (Addenda) 454. '.Ml 7l!'i. liip|>iii us L. (Addonda) 455, !M 4 Family •-". Uramiila- I"'"- . 1'h -par] is ( Jronuvv 455 717. oar.diims C. tV \ . . 455 TABLE OF CONTENTS. XXXIII Class IV. Pisces— continued. Page. Subclass Physoclisti. Order T. Acanthopteri. Family 80. Brarnidse. 236 (&). Brama Bloch & Schn. (Addenda) 915 717(&). rajiBlocli. (Addenda) 915 Family 81. Zenidie 456 237. Zeuopsis Gill 456 718. ocellatus Storer 457 Family 82. Berycidae 457 238. Hoplostetlius C. & V 458 719. rnediterraueus C. & V . 458 239. Holocentruin Bloch 459 720. pentacanthum Bloch. 459 Family 83. Aphredoderidae 460 240. Aphredoderus LeS 460 721. sayirms Gilliams 460 Family 83 (&). Elassomatidse 461 241. Elassorua Jordan. 461 722. zonatum Jor 461,915 Family 84. Centrarchidae 462 242. Centrarchus C. & V 463 723. macropterus Lac 463 243. PomoxysRaf 464 724. annnlaris Raf 464 725. sparoides Lac 465 244. Archoplites Gill 465 726. interruptus Grd 466 245. Amblopliles Raf 466 727. rupestrisRaf 466 246. Chsenobryttus Gill 467 728. antistius McKay 467 729. gulosus C. &V 468 247. Acantharchus Gill 468 730. pomotis Baird , 469 248. Enneacauthus Gill 469 731. eriarchus Jor 469 732. obesus Baird , 470 733. gloriosus Holbr 470 734. shnulans Cope.... 470 249. Mesogonistius Gill 471 735. chaetodon Baird 471 250. Lepomis Raf 472 § Apomotis Raf 473 736. cyanellusRaf 473 737. symmetricus Forbes 473 738. phenax Cope & Jor 474 § Lepomis 474 739. ischyrus Jor. & Nelson 474 740. macrochirus Raf 475 741. mystacalis Cope 475 742. elongatus Holbrook *. 475 743. rnurinus Grd 475 744. puuctatus C. & V 476 Bull. Nat. Mus. No. 16 in XXXIV TABLE OF CONTENTS. H IV. Pisces— continued. pn.r,>. Suliclass I'liv.-cH li>[ i. Order T. Acaiitlmpiri i. Family "I. (Vntrarcliidae. 7 l.~>. miiiiatus .lor ......................................... 470 7 1C), auritns Linn ......................................... 477 7 17. mejjalolis Kaf ........................................ 477 748. marginal us Ilolbr .................................... 17- 7 !'.«. liomliifrons Ag ....................................... 17> $ Ih'liuperca Jordan .................................... 47U 750. huniilis Grd .......................................... 479 7:>1. pallidns Mitch ....................................... 17'.' 752. herosB. & G ........................................ 480 7f>:{. i-uryorus McKay ................. ..................... 481 754. all.ulus Grd .......................................... 481 § Enpomotis Gill & Jor ................................ 1-.' 755. holbrooki C. & V .................................... 482 756. uotatusAg ........................................... 1-J 7f>7. gibbosns L ........................................... 482 758. lirus McKay ....... ................................... 483 251. Micropterus Lac .......................................... 4W1 7;")9. salmoides Lac ........................................ 484 7GO. doloraiei Lac ......................................... 4-i"> Fftiuily 85. Percidse ............................................... 480 . Ammocrypta Jor ....................................... .. •!-- 7r,1. Ix-aiii Jor ............................................. l~'.i 762. iM'llucida Bainl ...................................... l-'.i 7II-J (/*). vivax Hay. (Addenda) ........................... l»7(i 7i;:i. asprdla Jor .......................................... I'.lil . loa Jor. & Bray .......................................... -HHi 704. viirea Cope .......... .^. .............................. 4! 10 764 (i). vigilis Hay. (Addenda) ........................... H71 254. Bolcosoma DeKay ........................................ 4!M 7ii.".. iilinstcdi Storer ....................................... 4'.iJ 70i;. iiigrnmRaf ........................................... I'.*.' 7(17. clViil^cus (Jnl ......................................... 4l»:: 70-. \c\illan-Jor ........................................ -I'.c: Tii'.i. a-sopus Cope, ......................................... 4'.K; •j:.:.. Va ilia nt ia .lor ......................................... T 4'.»:'. 770(771). camiira Forbes .................................. 4'.M 256. rincrnira .lor ............................................ l;i| 77-.'. j.liiox ('opo ....................................... -.... !:>:. 773. >li^nia-a Jor ........................................ .»'.»:> 771. at ripiiinis Jor ....................................... I'.C. 77.">. siiiintrra Cope ........................................ I'.M', :. Diple.siiiin |;af ........................................... .J'.IO 770. I) 1 1 MI iiioi i l.-s 1,'at' ...................................... -W7 }. CottogaiBlei I'mnaiii ...................................... 4!»7 777. co] ic I and! Jor ........................................ .11 1~ 77-. piitiiami J. A. (i .................................... t;i- •.'."'.i. Iiiiosioma .Ionian ......................................... 49S 77'J. sliinnanli ( Jrd . ....................................... TJ- •JOd. I'.-rciiia llaldcmaii ....................................... 401* '. capro.l sEaf ......................................... -I'.t'.i 7-n (li). maiiiton Jor ...................................... .".no TABLE OF CONTENTS XXXV Class IV. Pisces — continued. Page. Subclass Pliysoclisti. Order T. Acanthopteri. Family 85. Percidse. 261. Alvordius Girard 500 781. macrocephalus Cope pOl 782. phoxocephalus Nelson 501 783. aspro Cope & Jor 501 784. nevisensis Cope 502 785. crassus Jor. & Brayt 503 786. variatus Kirt 503 787. evides Jor. & Copel 503 788. fasciatus Grd 504 262. Hadropterus Ag 505 789. aurantiacus Cope 506 790. nigrofasciatus Ag 506 263. Nothonotus Agassi z 506 791. cainurus Cope 506 792. sanguifluus Cope 507 793. maculatus Kirtl 508 794. rufilineatus Cope 508 795. vulneratus Cope 508 796. tessellatus Storer 509 797. cinereus Storer 509 264. Nanostorna Putnam 509 798. zonale Cope 510 799. elegansHay 510 800. thalassinum Jor. & Brayt 511 801. tessellatum Jor 511 802. inscriptum Jor. & Brayt 512 265. Etheostoma Raf 512 803. lineolatuin Ag 513 804. fiabellare Raf 513 805. squamiceps Jor 514 266. Pcecilickthys Ag 514 § Pcecilichthys 515 806. virgatus Jor 515 807. saxatilis Hay 515 808. punctulatns Ag 516 809. artesise Hay 516 810. lepidusB. &G 517 811. cceruleus Storer 517 812. spectabilis Agassiz 518 813. asprigenis Forbes 518 814. jessite Jor. & Brayt 518 § Boleichthys Grd , 519 815. butlerianus Hay 519 816. barrattii Holbr 519 817. fusiformis Grd 520 818. erochrous Cope 520 819. eos Jor. & Copel 520 820. exilisGrd 521 821. warreni Grd 521 822. gracilis Grd 521 § Aharius Grd 522 823. lateralis Grd . 522 XXXV! TAl'.I.K OF CONTENTS. Class IV. Pisces— continued. Page. Subclass Physoclisti. Order T. Acantlinptrri. Family 85. Percidae. 267. Microperca Putnam 522 824. prccl iaris Hay 522 825. punctuluta Putnam 523 268. PercaLinn 523 S2(>. americana Schrauck 524 269. Sti/.c>stedinm Eaf 525 827. vitreum Mitch 525 828. cauadeuse Smith 526 Family 86. Serrauida? 526 270. Ceutropomus Lac 527 829. undeciuialis Bloch 527 271. Roccus Mitch 527 § jRoccHS 529 830. lineatus Bloch 529 831 . chry sops Raf 529 § Morone Gill 530 832. interriiptus Gill 530 833. americanus Ginel 530 272. Stereolepis Ayres 531 834. gigas Ayres 531 273. Polyprion Cuvier 532 835. oxygenius BI. & Schn 532 273 (fe). Creolus J. & G. (Addenda) 916,972 835 (6). furcifer C. it V. (Addenda) 916 274. Serranus Cu v ">:',•_' $ Centropristis Cuv 533 836. atrarius L 533 836 (fc). nigrescens Bl. & Schii. (Addenda) 916 837. trifurcus L 534 $ DipJeclritm llolbr 534 838. formosus L. (Addenda) 534,971 § I'rioiindt'H Jen. (Addeuda) 535,917 839. subli^arius Cope 535,917 $ Pdrdlabrax Grd Ki5 840. clathratus (ird ."•::."• •W-U. in acnlol'asc i:i tus Steind 536 842. n.-l.ulifi-rCrd :.:',C. 274 (ft). Hyp..,, 1,.,-tnis Gill. (Addenda) H37.1»17 H43. in j,n-i cans Poey. (Addenda) 537. '.M 7 275. Tmotri.pis (Jill :.:'.7 8-14. stmiiia.s (HH,,IC A I'.i-aii. (Addenda) .".::-. '.»!>, 971 845. fa Ira I us I 'or y .- . . . 53-' -1C,, niicn.lrpis (;. A U • 538 846 (l>). jM-lrosus Pni-y. (Addenda) '.'1- 276. KI-IIH -phi-Ins liloch 539 847. atlantims Lac. (Add.-nda) 539, 91S MM. dniiiini..iid-lia\i <;. A I'. 540 -I'.i. moriu Cnv 540 850 (-:.::.'). ni^ritus Hnll.r 540 B§0 (ft). >iriai us Illoch. (Addenda) 918 850 (c). guttatus Guiel. (Addeuda) 919 TABLE OF CONTENTS. XXXV II Class IV. Pisces— continued. Page. Subclass Physoclisti. Order T. Acanthopteri. Family 86. Serranidse. 851. uiveatusC. &V 541 853. ? guasa Poey (ui'gritus?) 542,920 276 (&). Bodianus Blocli 541,911' 852. puncta Jus L 54 L 852 (6). taemops C. & V, (Addenda) 919 "278. £Dules Cuvier] 542 854. [aurigaC. & V.] 542 279. Rhypticus Cuvier 543 § Promicropterus Gill 543 855. maculatus Holb 543 856. [nigripinnis Gill. ) (Addenda) 543, 920 857. pituitosusG. &B 543 Family 87. Priacauthidse 544 280. Priacanthus Cuv 544 § Priacanthus 544 E58. arenatusC. & V. (Addenda) 544,971 § Pseiidopriacanthus Bleek 545 859. altus Gill 545 Family 88. Sparidoe 545 281. XeuistmsJ. & G. (Addenda) 546,920 860. californieusis Steind 547,920 282. Lutjauus Bl. & Schii 547 § Ocyiirus Gill ' 548 861. chrysurus Blocli. (Addenda) 548,921 § Lutjanas 548 862. caxis BL &, Schn - 548 862 (5). caballerote Bl. & Sclm. (Addenda) 921 862 (e). cainpechiaiius Poey. (Addenda) 549, 921 863. blackfordi G. & B 549 864. stearusi G. & B 549,922 864 (5). synagris L. (Addenda) 922 § Rhomboplites Gill 549 865. aurombens C. & V 549 282 (6). ConodonC. & V. (Addenda) 550,923 866. nobilisL 550,923 283. Poraadasys Lac 550 § Orthopristis Grd 551 867 (868). fulvomaculatns Mitch 551,923 § Anisotremus Gill. (Addenda) 923 869. davidsoui Steind 551 870. virgiuicus L 552 871. biliueatus C. & V 552 871 (ft), interrupts Gill. (Addenda) 933 284. Diabasis Desna 553 872. plmuieri Lac. (Addenda) 553,971 872 (&). elegans C. & V. (Addenda). 923 873. chrysopterus L 553,924 873 (fe). chromis Brouss. (Addenda) 924 873 (c). albns C. & V. (Addenda) 924 874. frernebundus G. & B 554 874 (b). jeiiiguano Poey. (Addenda) 925 875. trivittatus Bl. & Schn . . 554 XXXVIII TABLE OF CONTEXTS. Class IV. Pisces— euntinned. Pa^-- Snhi-lass Physocliati. < >rder T. Arantlnijiieri. Family 88. Sparidae. •J-:». Lobotes Guv 554 H76. snrinaraeiisis Block •">:> 285 C&). Calamus Sw. (Addenda) -?6 (/>). nie-ar, ;,lialus S\v. (Addenda) 9-J6 876 (c). bajouad.. Ml. & Scbn. (Addenda) IWi 876 (rf). macrops Poey. (Addenda) '.*•-" 876 (<:)• arctifmns (iomle A. Mean. (Addenda) '.»•-'? 876 (/). inedius Poey. (Addenda) '.»-'> 877 milneri G. & B. (Addenda) 550, '.'•.'- 286. Spams L •"<;,<; § PagrusVuv 556 878. pagrus L r.5f,, '.i-JJ 286(&). Stenotonms Gill. (Addenda) 557, <>..".» 880. cbrysops L 556. '.»-J'.i 881. versicolor Mitch. (Addenda) 557,929 881(6). caprinns Mean. (Addenda) '.'•-".> 286 (c). Lagodoii Holbr. (Addenda) 5.',-. '.t-j'.i 882. rhomboides L •">.", s 287. DiplodusRaf r.r^.'.i-JH ^ Archosargim Gill - •".">- . '.i J'.i 883. probatocepbalns Walb •"'•"'- $ Diplodus 5.V.I 884(885). bolbrooki Beau .V.;i 885(6). caribbaeus I'oey. (Addenda). '.»:'.(> 288. GirellaGray 560 .->'(;. nijjric-ans A\ res 560 289. Cypbosus Lacfep 1 290. Scorpis Cuv. A- \'al :.(VJ \S ('ifxioKiiinii Kanp 56-J 888. califoruiensis Stoind Family 89. Apogoiiidiu 219. Apogou Lac $ Ajiogon 5( >. '. [-~'.). anierieaiins Castelnau] "•!'.:; 889 (b). maenlatiiN I'oey. (Addenda) !»:50 § Apoijoii'u-htliiiN I'.Ieek. (Addenda) HIU 889 (c). alutus J. &. G »U $ Gloanamia Gill 56-1 890. pandi.mis < J . A B .".lil Family 90. Mnllida- 5(1 1 MullusL .".C.1. -'.•1. l.arl.aliis L •J'l:'. I '|)eiH'iis Clivier § 1'xi-ntliijiriifiix Mleek 5(>5 -'.!•.'. niaeiilatus Blocb 565 Family !>!. Scia-nida- 566 •JIM. llaploidonotiis K'af 56? :. griiiinieii.-. K'at' 56? •,".•5. I'numnias I,;ic 5f,- 894. c-liromi^ Linn. . 5(te TABLE OF CONTENTS. XXXIX Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Acanthopteri. Family 91. Sciaenidse. 296. Sciseua L 569 $ Stellijerus Stark » 569 895. lanceolata Holbr. (Addenda) 569, 931 § Bairdiella Gill 570 896. Chrysura Lac. (Addenda) 570, 931, 933 § Ophioscioii Gill 897. jacobiSteind 571 § Scicena 571,931 898. ocellata L 571 296. (b.) Roncador J. &, G. (Addenda) 572,931 899. stearnsi Steind 572 296 (o.) CorvinaCuv. (Addenda) 932 $ Corvina 572 900. saturnaGrd 572 § Pareques Gill 573 901. acuminata Bl. & Schn , 573 296. (fZ). Eques Bloch. (Addenda) 932 901 (&'). lanceolatus Gmel. (Addenda) 932 297. Liostomus Lac 573 902. xanthurus Lac 574 298. Genyon emus Gill 574,932 903. liueatus Ayres 574 299. Micropogou Cuv. & Val 575 904. undulatus L 575 300. Umbriua Cuvier 575 905. roucador J. & G 576 906. broussoueti C. & V 576 301. Menticirrus Gill 576 907. nebulosus Mitch 577 908. littoralis Holbr 577,933 909. alburuus L 577 910. undulatus Grd 578 302. Larimus Cuv. & Val 578 911. fasciatus Holb 578 303(304). Cynoscion Gill 579 § Atractoscion Gill. (Addenda) 579 912. nobile Ayres 579 § Cynoscion 579 913. parvipinne Ayres 580 914. nothum Holb 580 915. regale Bl. & Schn 581 916. thalassinum Holb 581 917. maculatum Mitch 581 305. Seriphus Ayres 582 918. politus Ayres 1 582 Family 92. Gerridte 582 306. Gerres Cuvier 583, 935 § Gerres 58:5 919. plumieri C. & V 583 919 (b). olisthostoma Goode & Bean. (Addenda) 934 § Diapterus Ranz 583 XL TABLE OF CONTENTS. Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Aeaiithopt.-ri. Family 92. G«-rrid;r. 920. {,Mila C. & V. (Addenda) 584,9:M 921. liomonynuis Goode & Bean .".-I !«21 (6). ciuereus Walb. (Addenda) 93;, 1>22. harengulus Goode & Bean .> ', Family 93. Embii.torida.' .>." 307. Hysteroearpus Gibbons 586 923. traski Gibbons 585 30*. AbeunaGirard 587 924. niiuiiiia Gibbons 587 92.",. aurora Jor. & Gilb 588 308 (ft). Brachyisi ius Gill. (Addenda) 589,93(1 9-26. frenatusGill 589 927. rosaceus Jor. & Gilb 589 309. Mierometrus Gibbons 58» 928. aggregatus Gibbons 590 310. Holconotus Agassiz. (Addenda 590,936 § Hypocritichthys Gill ~>91 929. analis A. Agassiz 591 $ Hyperprosopon Gibb 591 930. argenteus Gibbons. (Addenda) 591 931. agassizii Gill 592 $ Holconotus Ag 592 932. rhodoterus Agassiz 592 310 (fe). Ainphistichus Agassiz 593 I':1.:!, argenteus Agassiz 593 311. Hypsurus A. Agassiz 593 934. caryi Agassiz 593 312. Ditrema Schlegel 59-1 $ Embiotoca Ag 594 935. laterale Agassiz 594 9: HI. jacksoui Agassiz 595 $ Ditrema 595 !):'-7. a tripes Jor. & Gilb ">'.'• 93£ furratum Grd -"'.'li 313. Sbaohoohilns Agassi/ ."'.it', 939. toxolcs Agassi/. f.9ii 314. Damalichthys Grd "-9; 9 in. ai'gyrosoiiiiiH Grd -"97 Family 94. Lal.riila- .",'.17 315. Ctenolabrua div. &. Val 599 $ Ttnito'/olnlinis (ithr ;".99 941. a.lspnsus Wall. ">99 ::ir,. HiatulaLao. (Addenda) 509,936 :i|-J. ..mi is Linn 600 317. Larlmob-i.uisCiiv. \ Val GOO 913. falratus I. inn f.Ol 318. llarpr l.:i.-< !"•. Platyglossus Bleeker 602 946. radial usLirm 603 947, 948. bivittatns Bloch. (Addenda) 603, 936 948 (ft). caiidalisPoey. (Addenda) 937 949. semiciuctus Ayres 603 320. Pseudoj nils Bleeker 604 § Oxyjulis Gill (504 950. raodestus Grd •. 604 321. Xyricbtbys Cuv. & Val 605 951. vermiculatus Poey 605 952. lineatus Cuv. & Val 605 322. Calliodon Gronow 606 953. ustns Cuv. & Val 606 323. Scams Forsk. (Addenda) 606,938 § Scarus. (Addenda) 606, 933 954. guacamaia Cuv. and Val 607 954 (ft), croicensis Blocb. (Addenda) 938 § Sparisoma Sw. (Addenda) 938 954 (c). squalidus Poey. (Addenda) 938 954. (d). radians C. & V. (Addenda) 939 Family95. Cicblidie , 607 324. Heros Heckel 608 955. cyanoguttatus B. & G 608 955 (b). pavonaceus Garni. (Addenda) 939 Family 96. Pomacentridai 609 325. Pomacentrus Lac 609 § Pomaccntrus 610 956. leucostictus Miiller & Troscbel .1 610 § Hi/psi/pops Gill 610 957. rubicuudus Grd 610 325 (b). Glypbidodou Lac. (Addenda) 610,939 958. declivifrons Gill. (Addenda) 611 959. saxatilis Linn 611 326. ChromisL 611 § Furcaria Poey. (Addenda) 939 960. punctipinnis Cooper 611 • § Chromis 611 961. insolatus Cuv. & Val 612 961 (b). encbrysurua J. & G. (Addenda) 940 Family 97. Epliippidse 612 327. Chsetodipterus Lac 613 962. faber Brouss 613 Family 98. Cbaetodontidaj 614 328. Cbaetodon Linn 614 963. maculocinctns Gill 615 963 (ft), biinaculatus Blocb. (Addenda) 940 963 (c). capistratus L. 'Addenda) 940 329. Pomacantbus Lac 615 § Holacaiitlt us Lac 615 964. ciliaris Linn 615 964 (ft), tricolor Blocb. (Addenda) 941 XLII TABLE OF CONTENTS. cla^sIY. 1'Uees — eoiitinucd. Page. Subclass riiYMPclisi i. Order T. Acanthopteri. Famih 96. rh;et,>dontid;e. '.H',:>. arena t us L ........................................... (ilCi Family W. Arant Inirida- .......................................... t'.lii :!:!i) (b). iiijjricaiix L. (Addenda) ........................... '.ill W,(\(,-). tract us I'ocy. (Addenda) ......................... '.141 \nr, . ccBraleus Bl. & Schn ................................. iil? Family 10U. Tra.-liyptfrida- ........................................ C,l? 331. Tracliypterns (Jouan ...................................... Cd> UliS. altivclis Kncr ........................................ (il- Family lul. l.-i.stcida- ............................................. Gilt 33'2. IcDstcus Lock ............................................ Crjd 961). ii-nigniaticns Lock .................................... li-jn ::::::. Icirl.thys J. &G ......................................... i;-Jl 970. lockin^toui J. & G ................................... O-.M 334. BalliymaMrr Cop« ....................................... C'J-J '.'7 1. si-juatiis Cope ........................................ (i-j:; Family K)','. Lalilida- ............................................. C,-,':', 335. Lnpholatiliis G. & B ...................................... G-24 97^. fhanuL-leoiiticeps G. & B ............................. tV,M 336. Caul(»l:itilus Gill ......................................... ti-j:. '.IT:1.. ])rinceps Jen ......................................... <;v.". 974. chrysops C. & V ..................................... tiv!ii Family HlJ (l>). Trichodoniidai .................................... C.-Jii :'•:!?. Tricliodou S teller ........................................ (J-,'7 ;i7:>. stelleriC. &V ...................................... (1-J7 Family ll):». I'ranoM'opida- ........................................ ()V!7 I'.::-. A>i mscopns llrevoorl ..................................... i ;•.'•- 97(5. y-^neeum C. & V .................................... C,-J- '.177. am. plus C. & V ...................................... d-J'.i Family 103 (h). Opisllio^nathida-. (Addenda) ..................... SM'.' 338(6). (Jiiailnpops (iill. (Addend i) ......................... 1(4.' '.I77(/)). iiiaxillosiis 1'uey. (Addenda) ...................... '.M'.' 338 (c). Opistlio-iiaJlms C. A V. (Addenda) .................. (.»4:'. '.I77(r). seajdiinnis (Joudi- A liean. (Addenda) ............. !M:i '.•77 (,l). IniH-hnrusJ. A (',. (Addenda) ........... • ....... <)j:; Family 1^1. (;.iliiida- .............................................. <;•„".) :::','.l. (Mil.inmunis Lac. (Addenda) ............................. 030, '.C'-' '.'/-. iliinnilalor Lac ....................................... (','.',] :', Jll. i;icoiris ( irimnw ......................................... t',:',l '.»7'.i. ^yrinus Cu\. A \'al .................................. (iltl :: II. l>iirmitatin- ( ;ill ........................................... r,:;i 980(981). ma.'iilalii.s i;|...-h. (A.hlenda) ................... i;:!'J ::il (1>). CM I ins i'di-.-ker. (. \dilem la > ........................... '.Ml '.i-l (/»). anild\.i].M- ('..p.-. (Addenda) ..................... 944 ill-.'..' i:\.Tih.idns (Jill. (Ad.lenda) ............................ i ;:;•.' '.1-7. uiinleinaiiiii (Jrd. (Addenda) ........................ CI'.-J (::;:••) :;ii. (ioi.ins L ........................................... ,1:1:; v\ I'.ni-t, iuK/iux (.ill .................................... 033, H4r> I'-::, hri.'iis (Jrd ........................................... c,:;;; 983 (b). em-a-imins J. & G. (Addenda) ............ 945 TABLE OF CONTENTS. XLIII Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Acauthopteri. Family 104. Gobiidse. § Gobi us 633 984 (1)8-2, 985). soporator C. & V. (Addenda) 632, 634, 945 § Coryplioptcrus Gill 635 987 (&). boleosoma J. & G. (Addenda) 946 987 (c). stignjpturus Goode & Bean. (Addenda) 946 987 (d). nicholsi Bean. (Addenda) 946 988. glaucofrseuuni Gill 635 345. Gobiouellus Grd 635 989. oceauicns Pall 636 989 (fc). stigmaticus Poey. (Addenda) 947 346. Gillichthys Cooper 636 900. mirabilis Cooper 636 347. Lepidogobius Gill 63-7 § Lepidogobius 637 991. gracilis Grd 637 $ Eucyclogobius Gill 637 992. newberry i Grd 637 992 (b) (986). gulosus Grd. (Addenda) 634,945 992 (c). thalassinus J. & G. (Addenda) 947 348. Gobiosorua Grd 638 993(994). bosciLac. (Addenda) 638,948 994 (b). ios J. &G. (Addenda) 948 349. Typhlogobius Steiud 639 995. califoruiensis Steind 639 350. Tyntlastes Gthr 639 996. sagittaGthr 639 350(6). loglossus Bean. (Addenda) 948 996 (b). calliurus Beau. (Addenda) 949 Family 105. Ckirid;e 640 351 (a). Pleurogrammus Gill. (Addenda) 642,949 997. ruouopterygius Pall 642 351 (&). Hexagrainmus Steller 641 998. ordinatus Cope 642 999. asper Steller 643 999 (6). scaber Beau. (Addenda) 949 1000. superciliosus Pall 644 1001. decagrammus Pall 645 352. Ophiodou Grd 646 1002. elongatus Grd 646 353. Zauiolepis Grd 647 1003. latipiunis Grd 647 354. Oxylebius Gill 648 1004. pictus Gill 648 355. Myriolepis Lock 649 1005. zouiferLock 649 356. Anoplopoma Ayres 649 100G. nrnbria Pallas 650 Family 106. Scorptenidsc 650 357. Sebastes Cuvier 651 1007. marinus Linn . 651 358. Sebastodes Gill.. 652 XLIV TA15LE OF CONTENTS Cla^s IV. 1'isr.-.' — continued. Pago. Siil>clas> I'liYsoelisti. < >;-I|IT T. Aeaiitho]>tcri. Scorpa>nida-. » SilntnlndfH ...... _ ................................... 65(5 pancispiuis Ayrt'.s .................................... 656 v\ Si !>*oi,ni-i ( ,ill ................................... (357 Idii'.i. ilavidns Ayn-s ....................................... <;;,7 1010. mi-la no ps ( Inl ................. ^ ..................... (358 Kill, ciliatus Tiles ........................................ (;:,s IdlJ. inysiinus .lor. A Gilb ...................... .. ......... li.Y.i Idl:;. cut i Hill-las J. & G .................................... c.v.t )dl 1. oval is Ay res ......................................... (i(50 l(il.">. ]ir.)ri^i'i- J. A- (! ..................................... C.01 KUt'i. ;itni\ in-ns J. «fc G ................................... 1017. pinni^cr (Jill ........................................ 1018. ininiiitus J. & (J .................................... 663 ^ StbuKtoiiiiiM (iill ........................................ 0(34 1019. riilicrAyrcs ............. ............................. i,t;;, 1019 (i). umbrosus J. & G. (Addenda) .................... 950 10-Jd. r.mstcllatus J. & G .................................. i;c,r , ri)s:icciis Gnl ........................................ 6G6 rlnxlocLloris J. & G .................................. 667 1 1 !•,':{. chlorostictiis.I. A (! ................................ (568 lii'J4. clongatiis A.vrrs .................................... 669 10%J"). rubrivinctns J. & G ................................ 669 ^ St-bastichthys Gill .................................... ii7d Id'Jli. auricula (us (inl ...................................... 670 10-J7. rastri-lli-i-r .1. A (i ............ . ..................... G71 10:>. caiiriinis K'ich ....................................... KL'S (1>). vt-xillaris.I. A (i ................................ 10-Jll. i.iali-cr.l. A (i ...................................... !(•:!(». carnatns J. & G ..................................... C,7 1 ld:',l. clirysoinclas .1. A G ................................. Ii7.~> KC'.-J. iicbnlosiis Ayrcs ..................................... (uti ld:;:f. scriiccjis J. & G ................................... . . 676 10:>1. ni^riH'i net us Ayrcs .................................. <177 359. Si-iii-|i;i'iia L .............................................. c,7s Idii.".. ilactyln].ti-ra De La Roche .......................... r,7!> Idllii. -niliita (Jrd ........................................ i;7'.i l I ii 1 1. ca \ifruns l,,,ch ...................................... 686 :!ti-j. Ascciici,iii\s .1. A <; ...................................... 686 Id I-.', i In M|, mis .1. A G .................................... 086 368. I'sxHirulnics (iiinthcr .................................... i;s(; HM.:. |iiiradii\ns Gtbr ................................. ... 687 .:i.l. ('(.ttnnciilns Colldt ...................................... 687 1"ll. ini.-ii>|.s d.Hctt ...................................... (,«,-; ld|.">. idi-viis (uHiilc . . . .............. , 688 TABLE OF CONTENTS. % XLV Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Acanthopteri. Family 107. Cottida?. 365. Icelus Kroyer ............................................ 689 § Artedius Grd ............................. „ .......... 689 1046. lateralisGrd ........................................ 689 1047. notospilotus Grd ..................................... 690 § Icelus ............................................... 690 1048. hamatus Kroyer ..................................... (591 1049. quadriseriatua Lock .................................. 691 § Chitonolus Lock ...................................... 691 1050. inegacephalns Lock ................................. 692 1051. pugettensis Steind ................ ... ............... 692 1052. uucinatus Reinh .................................... 693 1053. bicoruis Reinh ...................................... 693 366. Uranidea De Kay ........................................ 693 § TanrideaJor. & Rice ................................. 694 1054. ricei Nelson. (Addenda) ............................ 694,953 § Cottopsis Grd ....................................... 694 1055. aspera Rich ......................................... 694 1056. semiscabra Cope ..................................... 695 1056 (6). rhothea Rosa Smith. (Addenda) ................. 953 § Potamocottus Gill .................................... 69.J 1057. gulosa Grd ......................................... 695 1058. punctulata Gill ...................................... 696 1059. bendirei Bean ....................................... 696 1060. richardsoni Agassiz .................................. 696 1061. wheeled Cope ....................................... 0 697 § Uranidea ........................................... 698 1062. cognata Rich ........................................ 698,953 1062 (6). spilota Cope. (Addenda) ........................ 954 1062 (c). pollicaris J. & G. (Addenda) .................... 954 1063. rninutaPall ......................................... 698 1064. margiuata Bean ..................................... 698 1065. viscosa Hald ......................... ............... 698 1066. gracilis Heck ........................................ 699 1067. gobioidesGrd ........................................ 699 1068. boleoides Grd ........................................ 699 1069. franklini Ag .................................. ....... 699,954 1069 (fe). formosa Grd. (Addenda) ................... . ..... 955 1070. hoyi Putn ............................................ 700 367. CottusL ................................. , ............... 700 1071. bubalisL ............................................ 701 1072. octodeciruspinosus Mitch ............................. 701 1073. seneus Mitch ......................................... 701 1074. scorpioides Fabr .................... „ ................ 702 1075. scorpius L ........................................... 702 1076. polyacanthocephalus Pall ............................ 703 1077. labradoricus Grd ......................... . ........... 704 1078. tseuiopterus Kner .................................... 704 1079. quadricoruis L ....................................... 704 1080. humilis Bean ........................................ 705 1081. jack C & V .......................................... 705 XLVI T \15LE OF CONTENTS. Class IV. Pisces — continued. Page. Subclass Pbysocli.-ti. Order T. Acaiithoptcri. Family 107. Cottida-. 108-'. axillarisGill 7m; Id-:;, pnlarisSab 7U6 1084. platycepbalnwl'all 706 1085. verrucosus Bean 707 1086. nigerBean 707 1087. qnadritilisGill 707 368. Gymnacanllms S\v 708 KisS. pistilliger Pall 708 1089. galeatns Bean 709 369. Triglopsis Grd 709 1090. thompsoni Grd 709 370. Enoplirys Sw 710 1091. bison Grd '. 710 1092. dicerausPall 711 109:?. claviger C. & V 711 371. Liocottus Grd 711 1094. hirundoGrd 712 872. Triglops Roinh 712 1095. pingt'liReinh 713 373. Leptocottns Grd 713 1096. armatusGrd 7i:< 374. Heinilepidotus Cuv 714 1097. spinosns Ayr 711 1098. jordani Bean 715 1099. trachurus Pall 715 375. MelletesBeau 71C 1100. papilio Bean 71(i 376. Scorpa-nidithys Grd 716 1101. inarmoratua Ayr 716 377. Oligoeotlus Grd 717 $ Clin,>,;,ttii8 Gill 717 1102. analis Grd 717 § Oligoi'ottns 718 1103. inaciilosiiH (Jrd 718 $ Blennicoltus Gill 71.- 1104. gl(.l.ir.-i»s(;rd "I1" 37K P.lei^ias Cuv 71'.» 1105. cirrhosns Pall 71H inn;. bilobusC. <& V '- 720 ::7'.i. N.-niticlitliys Crd 72(1 1107. oriilol'asriatus ' -I'd 721 380. l.'li.'iini.liorc.ttns Ctlir 721 IP'-. ricli:ir.U..ni Ctlir 722 1"- (a). Agmiiil.-i- :'.-!. Aspiiloplniriiides Lac 724 IKC.i. n nun iptery gins Bluch 111(1. inerniis (it In- 7'J5 388. Siplia.umins Stc-ind 725 1111. l.arl.atu- St.-ind 725 383. Lrptaguims (Jill. (Adilenda) 726,955 TABLE OF CONTENTS. XLVII Class IV. Pisces — continued. Pago. Subclass Physoclisti. Order T. Acanthopteri. Family 108 (a). Agonidse. § Bracliyopsis Gill 726 1112. rostratus Tiles 726 1113. verrucosus Lock 726 1114. xyosternus J. & G 727 § Leptagonvs (Addenda) 955 1115. decagouus B. & S 727,955 [384. AgonusB. & S] 728 [1116. cataphractus L] 728 385. Bothragonus Gill 728 1117. swani Steind 729 386. Odontopyxis Lock 729 1118. trispiuosus Lock 729 387. Podothecus Gill ' 729 1119. vulsusJ.&G 730 1120. acipenserinus Tiles 730 Family 108 (&). Triglidse 731 388. Peristedinm Lac 732 1121. miuiatum Goode 732 [389. TriglaL.] 733 [1122. cuculusL.] 733 390. Prionotus Lac 733 § Orniclithys Sw 734 1123. scitulus J. & G. (Addenda) 734,956 1123 (6). punctatus Bl. (Addenda) 956 1124. palmipes Mitch 734 § Prionotus 735 1125. tribulus C. & V 735 1126. evolansL 735 1127. stephanophrys Lock 736 391. Cephalacanthus Lac 737 % 1128. volitansL. (Addenda) 738,957 Family 109. Liparididae 738 392. Amitra Goode 739 1129. liparina Goode 739 393. Careproctus Kroy 740 1130. gelatiuosus Pall 740 1130 (6). reinhardi Kroy. (Addenda) 957 394. LiparisL 740 § ActinocJiir Gill ., 741 1131. major Walb t 741 § Liparis 740 1132. pulcbella Ayr 741 1133. gibba Bean 741 1 135. tunicata Reinh 742 1136(1134). lineata Lepechin 742 1137. rauulaG. &B 742 1138. montagui Don 743 1139. calliodon Pall 743 1140. cyclopus Gthr 743 § Neoliparis Steiud 744 1141. mucosa Ayr 744 XLV1II TABLE OF CONTENTS. Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Acantliopteri. Family 110. Cyclopterida- ......................................... 744 395. Cycloptei-ichthy.s Stcind .................................. 745 1142. ventricosus Pall .................................... 745 114:?. stelleriPall ..................... ..................... 745 395 (6). Eumicrotremns Gill. (Addenda) ...................... 740,957 1144. spinosus Miill ....................................... 746 390. Cyclop! ei-us L ............................................ 746 1145. linnpusL ............... ............................ 747 Family 111. Gobiesocidse .......................................... 747 397. Goliiesox Lac ............................................. 748 1140. n-ticulatus Grd ...................................... 749 1147. strumosiis Cope ..................................... 749 1147 (ft), virgatulns J. & G. (Addenda) .................. 957 1148. rhessodon R. Smith .................................. 749 Family 112. Batraehida' .......................................... 750 398. Batraclius B. & S ......................................... 75( i 1149. tan L ............................................... 750 1149 (6). pardus G. &B ................................... 751 399. Poricbthys Grd ................................. . ......... 751 1150. margaritatus Rich. (Addenda ) ....................... 751, 958 1150 (6). plectrodon J. & G. (Addenda) .................. 958 Family 113. Leptoscopida? ......................................... 752 400. Dactyloscopus Gill ........................................ 75:'. 1 151. tridigitatua Gill ..................................... 753 Family 114. Blenniid;e ......................................... --- 753 401. Ophioldenuius Gill ........... , ........................... 750 1152. webbi Val ........................................... 756 402. ChasnmdesC. & V ........................................ 7.-.C. 11.");;. liosi|Hianus Lac ...................................... 756 1154. quadrifasciatus Wood ................................ 757 • 1154 (fc). saliurra- J. & G. (Addenda) ................... 958 403. Iscslhes J. & G .......................................... 757 1155. ^ilherti Jor. (Addenda) ............................. 757, 951 > 1155(6). gt-.ntilisGrd. (Addenda) ...................... -... !'."(.i 1150. ]>nnctatns Wood ..................................... ">s ll.",0(/-). ht-ntxi Lo S. (Add«Mida) ......................... '."til) 1150(r). iontlias.I. & G. (Addenda) ................ ...... HHn 1150 («/). MTiilator .J. A G. (Addenda) .................... '.Hid 404. H \plmroelii Ins Gill ....................................... 756 1157. iniil I i 111 is Grd ........................................ 758 ii.">.-\ gefninatus Wood .................................... 751) 405. Uleiiniiis L ............................................... 759 , [ll.V.l. fuconuii ('. A V.I ................................. 759 1159(6). stearnai J. & G. (Addenda) ...................... (.M;I 1159 (r). fiivnsns Goodo A- Bran. (Addenda) ............... Hill ll.V.l i./). astn-ias Condf A liean. (Addenda) ............... 90 1 I'liolix Cnv .......................................... 700 lliiti. earoliniis ('. & V .................................... 700 400. Neoelimis (Jrd ............................................ 70(1 1101. satiiicns Crd ........................................ 701 1102. 1 .la in -ha nil Grd ...................................... 701 407. CliuusCnv . , ......................... 761 TABLE OF CONTENTS. XLIX Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Acautbopteri. Family 114. Blenniidse. § Labrosomus S w 762 1103. imckipinnis Q. & G 762 § Gibbonsia Coop 763 1164. evides J. & G 763 408. Heterostichus Grd 76:* 1165. rostratus Grd 764 409. Cremnobates Gthr 764 1166. integripinuis R. Smith 764 1166 (?>). marmoratus Steind. (Addenda) 962 410. Ckirolophus Sw 765 1167. polyactocepbalns Pall 765 411. Mursenoides Lac 766 § Mufcvnoides 767 1168. gunnellus L 767 1169. fasciatus B. & S 767 1170. oruatus Grd 767 1171. inaxillaris Bean 768 1172. dolicbogaster Pall 768 § Astemopteryx Riipp 769 1173. guuelliformis Eiipp 769 412. ApodichthysGrd. 769 1174. flavidus Grd 769 1175. fucorum J. & G 770 413. Anoplarchns Gill 770 1176. atropurpureua Kittl 771 1177. alectrolophus Pall 771 414. Xiphister Jor 771 1178. chirus J. & G 772 1179. mucosus Grd 772 1180. rupestris J. & G 7/3 415. Cebedichtbys Ayres 773 1181. violaceus Grd 774 416. Eumesogrammus Gill 774 1182. prsecisus Kroy 774 1183. subbifurcatus Stor 775 417. Sticbceus Reinli 775 1184. pnnctatus Fabr 775 418. Notogi'atnmns Beau 776 1185. rothrocki Bean 776 419. Lumpenus Reinh 776 § Leptoclinm Gill 777 1186. maculatus Paries 777 § Anisarchus Gill 777 1187. medius Reinb. 777 § Lumpenns 777 1188. anguillaris Pall 777 1189. fabricii C. & V 778 420. Leptobleniiius Gill 778 1190. nubilnsRich 778 1191. serpentiuus Stor ;-.. 778 1192. lampetrteformis Walb 779 Bull. Nat. Mus. No. 16 iv L TABLE OF CONTENTS. Class IV. Pisces — continued. Page. Subclass Physoclieti. Order T. Acauthopteri. Family 114. Blcnuiidrc. 421. Delolepis Bean 779 1193. virgatus Bean , 779 422. Cryptacant hodes Stor 780 1194. niaculatus Stor 780 423. Anarrhichas L 781 1195. lupus L 781 1196. minor Olafa 71 1197. latifrons Steenstrup & Halgrimsson 782 1198. lepturusBean 7^ 424. Auarrliichthys Ayres 782 1199. ocellatus Ayr 782 Family 115. Lycodidie : 783 425. ZoarcesCuv 784 1200. anguillaris Peck 784 42^ 1212. turiHTi I lean 7s-' 1-J13. polaris Sab 788 429. Gymnelis Reiuh 789 1214. viridis Fabr 789 1215. stijrma Bcnii 789 430. lTr.mi-< -i.-s Cthr 789 121(i. i»arrii Ross 789 Fan illy 1 It! ( 'migvogadida' 7!U) 431. S.-ytaliua .1. & C 790 1-J17. i-rrdalc .1. & G 790 Family 117. Fi.Taslrrida- 791 1 :!'.'. l-'icrast'iT ( 'n v 791 1218. dubiusPutn 791 I'amily 1 I ~. Opljidiida- "(-'2 •I:1,::, ophidium I, T'.i-J vS O^hnliinn 79',' 1-J19. inar^iiiatuiii Dek 792 l-.'-.'n. :\»^^,}n i:rd 793 l-J-.M. liollinxiki 1'iitu 793 l-.-.M (/'). -raiMl.si 1'ury. (Addru.la) 9C:» 1 •.'•.'•..'. layluri Crd 793 § /.I'liln/iliiiliiiin Cill 793 1223. pn. fund. .Mini (Jill 793 433 (/<). (Jruyplrrus I'liili|.].i. (Addenda) 9C.3 (/• .. ..mostigma J. & G. (Addenda) 903 TABLE OF CONTENTS. LI Class IV. Pisces — continued. Page. Subclass Physoclisti. Order T. Acanthopteri. Family 120 (119). Gadidae 794 434. Bythites Reinii 795 1224. fuscusReinh 795 435. Dineniatichthys Bleek 795 § Brosmopliycis Gill. (Addenda) 796, 963 1225. marginatus Ayres 796 436. Ouos Risso 796 $ RMnonemus Gill 797 1226. cimbrius L 797 § Onos 797 1227. reinhardti Kroy 797 1228. ensis Reinh 797 437. PhycisB. & S 798 1229. regiusWalb 798 1230. earlliBean. 798 1231. chussWalb 799 1232. tennis Mitch 799 1233. chesteri G. & B 799 438. Haloporphyrus Gthr 800 1233 (6). viola G. & B 800 439. Physiculus Kaup 800 1234. dalwigkii Kaup 801 440. MolvaNilss 801 1235. vulgaris Flem 801 441. Lota Cuv 801 1236. maculosa Le S 802 442. Brosmius Cuv 802 1237. brosnie Mull 802 443. Gadus L 803 § Melanogrammus Gill 803 1238. seglifinus L 803 § Gadus 804 1239. callariasL 804 $ lilesia S w 804 1240. gracilis Tiles H04 § Microgadus Gill 805 1241. proximus Grd 805 1242. tomcod Walb 806 § Pollachius Nilss 806 1243. virens L 806 1244. chalcogramm UM Pall 807 § Boreoyadus Gthr 807 1245. saida Lepechiu 807 444. Hypsicometes Goode 808 1246. gobioides Goode 808 445. Merlucius Raf 808 1247. biliuearis Mitch 809 1248. smiridusRaf 809 1249. productns Ayres 809 Family 120 (&). Chiasmodontidaj. (Addenda) , 964 446. Cbiasmodou Johns 810 1250. niger Johns 810 UI TABLE OF CONTEXTS. C'lass IV. 1'i-i-i • — 1-Miitiniifd. Pago. Onlt-r T. A<-aiit Impic-i i. 1-ainily ^21. Mai-rui-ida- ............................................ 810 •117. Ma.-nmis i;i..«-li .......................................... bll 12.M. taliririi Simd.-v ...................................... Ml l'-.~>2. caniiinatus (itiodf .................................... .-12 1 •.'.'.::. l.air.Iii;. \ B ....................................... 812 1 I-. ( 'nr\ plia-HM i Irs ( in liner ................................... -12 I'.'.'l. rii]irsiris (iuiiinT ................................... -12 Order I". He tfi-MMiniata ................................................ 813 ramih 122(12:1). riiMironectidu} .................................. 813 •II'. i. Uotlius Kaf .............................................. 815 l-j.Vi. maonlatos Mitch .................................... Hl.r> 4."ii. Citharii-litliys Ill.'rk ...................................... ,-ld v> Jit in irhvmbuy Block .................................. % -It! r,T.C.. jia-tulus Goodr A Bean. (Addenda) .................. 810,964 1^50(6). occllatus I'o.-y. (Addenda) ....................... M?,%4 § Citluir'n-hthi/x ........................................ 817 1-257. sunlidus (inl ........................................ ,^17 1-J.-.7 (b). stigma-Ms J. &G. (Addenda) ..................... '.M,r, I-.1:.-, spili ptrnis (it In- ..................................... 817 l-_'.V.i. aivtilronsGoodc ..................................... -1- l-'GU. nnicornis Goode ..................................... H18 451. Iliiipo^lnssua Cuv ........................................ L-JCl. vul»-aris FU-in ....................................... 45'2. J'latysoinaliclitliys I'det-k ................................. 819 Ivit'i-J. Iii|)poglossoide8 Walb .................. '. ............. '•I'.1 4:.:;. Atlit-ivsthes J. & G ....................................... 820 1-Jti:;. stomias J. & G ...................................... 820 454. Paraliditliys (ird ......................................... 821 $ I'dnilh-lithys ........................................ '. 821 I'.v. I calit'ornii-us Ayr ...................................... *«.'! 1 •:(•,:,. M.-rllaris Dek. (Add.-n Ililipo^lussnidi •> < .ol I si- 1 n- ................................. { Hippoglostoidee ............... .. ..................... 1872. pi. -i i. -SMI. i. -s !••.-! in- .................................... 127::. ,-l:issMd<.n .J. A 0 1312. vespertilio L 850 1313. ciibifrnns Rich 850 474. Halieutichthys Poey 85L 1314. acnleatns Mitch 851 475. Halientii-aC. &V 851 1315. senticosaGoode 851 Order W. Plectognathi 852 Family 127. Ostraciida* 852 476. Ostracium L 853 § Lactophri/s Sw 853 1310. trigounm L 853 1316 (&). triquetrnm L. (Addenda) 905 1317. qnudricoriie L 854 Family 128. Balistidic 854 477. Balistes L 854 1318. vetulaL 855 1319. cnpriscus Guiel H55 1320. poweli Cope 855 478. Monacantlins Cnv 856 $ Monaco nth K.I — 856 1321. dccidentalisGthr 856 $ Stepltanolepia Gill ^'">0 i::22. hispidns 1.. (Addenda) 856,965 1323. davidsdiii Cope ~-'7 1: :•.'!. spildiidtns Cope 857 $ CKiithiniir* S\v 858 132:.. pullns K'an/. 858 47'.i. Alntera Cnv K'.S 1327. M-ripla ( )sb 4bO. l.a-.M-rid.aln-, S\v 859 I ::-.--. Lajvigatua h 860 4M. T.-lrodon L H',0 1321». |.olilns(Jrd WO 1 ::::<). i.-.stmlin.-ns 1 861 i::::i. spcn^lni 151 861 1 ::::•,'. tni-iclu-. Mil,-!, 861 L332 b). ii.-i.li.-ln>!; 1.- A llcan. (Addenda) 966 I :;::::. n iclidci-|>li:ilns Cope 862 4*-2. Trii-liddioddn 1',1,-,-k 802 l:;::i. piUwun Mitch 802 TABLE OF CONTENTS. LV Class IV. Pisces — continued. Page. Subclass Physoclisti. Order W. Plectoguathi. Family 129. Tetrodontidse. 483. DiodonL 862 1335. hystrixL 863 1336. liturosus Shaw. (Addenda) 863,966 484. Chilomycterus Bibron 863 1337. geometricus B. & S 863 1337 (6). fuliginosus Dek : 864 1337 (c). reticulatus L. (Addenda) 966 Family 130. Orthagoriscidse 864 485. Molacautlius Sw 865 1338. numniularis Walb 865 436. MolaCuv 865 1339. rotundaCuv 865 487. Ranzauia Nardo. (Addenda) 966 1340. truucata Retz. (Addenda) 966 LIST OF NEW GENERA AND SPECIES. Tin- following specific ami .^em-rio names ajipeai-asnexv in the ] in-sent work. A nunir her nf i'l KIT ili-script ion* ,,{' ne\v species in the Addenda aiv alirid^rd from ma'niscri])t8 and proof -sheets of the current volume of the Proceedings of the I'nited Stati - Nat i kennicotti Milner .............................................. I'undiiliis ad i nia J. & G ................................................... I):'..". 1 jiiliynnus IJitkon ........................................................ 4'29 Lejiomis symmetrirns I-'orbes .......... . ................................... 47H Cotto^asler ]iutnami J. &. G ............................................... •!'.>> I'lerilichthys Imtleriaiiiis Hay ............................................. Ml I lloilira^onus t;ill .......................................................... ?-J< Cut i n neii I us torvus Goode ................................................. r,-- - i • bhesj. &G ........................................................... ::,: ( 'I in us evides J. & G ..................................................... 7i',:; I'.iialiehtliys ojihryas .1. & G .............................................. >•„'.' 1'araliehiliys ommatiis .1. A G ............................................. s.'-l l-n|ik<'k'itm jilacoid, soinrt imcs olisol. •!<• : «•--> few ami lar.nv. Ki.ASMor.KAXt nn. ::. }{ Skull with mrmbraii" hones; j^ills 1'ivo ; branchial openings a single slit on each side, soinri imcs rontlurn; ; exoskolrton various, not plaroid; • comparatively small and IIUUHTOUS .......................... PISCES, 4. CLASS I.-LEPTOCARDII. (The Lancelots.) Skeleton membrane-cartilaginous; skull undeveloped, with tlie noto- chord persistent and extending to the anterior end of the head. Brain not dill'erentiated. Xo heart; the function of the heart being performed by pnKatingsinuses. Blood colorless. Respiratory cavity confluent with the cavity of the abdomen; branchial clei'ts in great number, the water being expelled through an abdominal pore in front of the vent. Jaws none; the month a longitudinal fissure, with cirri on each side. SiiKill marine animals highly interesting to the zoologist as exhibiting the lowest degree of development of the vertebrate type. The class includes but the single order Cirroxlomi. (/s—w?, thin; xapuia, heart.) (Subclass Lrjtt.ocardii Giinther, viii, 513-514.) ORDER A.-CIRROSTOMI. (The This order is equivalent to the family BranohiostomatidtB. (Latin, cirrus, a lock of hair; <77»/'-a, mouth : the mouth being surrounded by u tViiige of cirri.) (Cirrostouti (iiinther, viii, 513-51-4.) FAMILY I.— BKAXCIIIOSTOMATID^E. (The Lancelctx.} Body elongate, cuiiqiressed, naked, colorless, with no fins, except a ra\ less fold extending along the hack, around the tail, past the vent, to the abdominal pore. Month interior, appearing as a longitudinal fis- sure. surrounded 1>\ conspicuous, rather still' cirri. Kye rudimentary. Liver reduced to a blind sac of the simple intestine. ra two, Branchioatoma and Epigonopterus, differing chiefly iu MARSIPOBEANCHII. 6 the greater development of the dorsal fin in the latter. Species four or more, found imbedded in the sand on various coasts. (Cirrostomi Gtlir. viii, 513-514.) * Dorsal fold very low, nearly uniform ......................... BRANCHIOSTOMA, 1. 1.— BRArVCHIOSTOITIA Costa, 1834. Lancelots. (Ampliioxus Yarrell.) (Costa, Ceuni Zoologici Napol. 1834, p. 49 : type Branchiostoma liibrlcum Costa = Limax lanceolatus Pallas.) The characters of this genus are essentially those of the family as given above, the little development of the fins constituting its chief dis- tinctive character, (flpdyziaj gills ; !' the head, over the mouth : snout with eight harltels; moiitli \vithoutlips; one median tooth on the palate and two comb like series of teeth on the tongue. Jiranchial a]>erttires at a great distance from the head : a series of mucous sacs along each side of the abdomen. Intestine without spiral valve. Eggs large, with a hornr case provided \vith threads lor adhesion. Marine lamprey-like animals, lull-rowing into the tlcsh of fishes, on which they feed. There is but oir.« family, Mi/.i'ii/idtc, unless we assign separate rank to r»l<-U<>*tom<( on account of the difference in the gill-openings. (u-ef>u>a, palate; -»r,r.>, perforate.) (Family Mi/.i-iiiidir Giintlier, 510-511'.) FAMILY II— MYXINID^E. (The nag-fish^.} The characters of the family are included above. Genera two; species few ; marine animals, found in all temperate seas. (Mi/.ciniy six ducts to six br:mclii:il snrs. MYXINK, ','. * I'.raiidiial aprrt urcs six or mon- on cadi side, each leading direct ly tu a luandiial ........................................................... BDELLOSTOMA, 3. 2.— HYXIIVK Linna-ns, 17.")8. Hag-fishes. (Lilin:i-ii-.. Sy-lrina \alur:r: t\|>c Mij.,iii< • t/liiliiinxd L.) I'.ody eel slmped. covered by a thin skin, which is easily detached. . \loii; the lo\\er side, for nearly the whole length of the animal, are, t\\o rows of mucous glands, each \\ith an external opening, from which - a quantity of mucus which renders these animals during life xj\ ,-|\ >lini\. No eyes. Pirain small, of the normal lish type. Skull little de\doped. cai-tilauiiious: the llexible notochord enclosed in -heath, and extending from the base of the skull to tllC Clld of the 2. MYXINID^E BDELLOSTOMA. 5 tail representing the spinal column. Mouth round, suctorial, without lips, with a pair of barbels on each side. Nostril single, large, on the median line above, and at the very front of the head, provided with two pairs of barbels. Teeth strong, a single median one on the roof of the mouth, and two rows on each side of the tongue, which is a powerful organ, with a strong fibrous tendon moving in a muscular sheath. Alimentary canal a simple, nearly straight tube. Gill-sacs placed on each side of the oesophagus, lying directly against its outer walls. The water passes into them by a small pore opening directly from the oesophagus into each sac. It is then passed out by a duct, which continues backward along the outer walls of the sacs to the abdominal Avail at the end of the last sac, where all the ducts from one side unite in one, and the water is emptied at the branchial opening on each side of the median line. In close connection with the branchial opening on the left side there is a third opening that leads by a very short duct to the oesophagus, and hence into the branchial sacs, at times when the supply through the mouth is cut off by the head being buried in the food of the animal. Ovary single, on the right side. No oviducts ; the mature eggs falling into the abdominal cavity are excluded through the peritoneal opening at the side of the vent. — (Putnam.) A single species; colorless, parasitic animals, burrowing into the bodies of fishes, and found in all temperate seas. (;j.o^a, slime.) 2. OT. gflutifliosa. L. — Hag-fish; Sorer; Sleepmarken. Blue above, whitish below ; head 3£ to 4 in total length ; tail 6.J to 10 times in total length; lingual teeth 8 to 11 in each row (Putnam). Coasts of Europe and America; not abundant on our shores. (L. Syst. Naturae ; Gtiiitlier, viii, 510 ; Putnam, Proc. Bost. Soc. Nat. Hist. 1873, 135 : Myxine limosa Girard, Proc. Ac. Nat. Sci. Phila. 1658, 223. ) 3.— BDELLOSTOIHA Mailer, 1834. (Miiller, Abhandl. Akad. "VViss. Wien, 1834, 79 : type Petromyzon cirrhatus Forster.) This genus differs from Myxine chiefly in the structure of the bran- chial apparatus, there being six or more sacs on each side which receive water directly from the oesophagus as in Myxine, but the emptying ducts, instead of passing backward and downward to a common exter- nal opening, as in Myxine, pass directly through the wall of the body, so that there are as many external openings as there are gill-sacs. Warm seas. (p3£M<>S) leech ; or^ua, mouth.) CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 3. B. stoilti* •• Kl.'ven -ill openings on each side : ten teeth in the anterior and nine iu tin- posterior series. Fifteen indies long.'7 — (Locldngton.) Coast of California ; not rare. (Lockiugtoii, Ainer. Nat. l>ec. 1-7S, 7'M.) OKDEK C'.-HYPEROARTIA. (The Lampreys.} Nasal duct a blind sac, not penetrating the palate. This order is equivalent to the single family PetromyzontidcB. (>'>-zr>a»t., palate; d/nto?, complete; i. c., entire.) (PetromyzontidcB Giiuther, 409-509.) FAMILY III.— PETROMYZONTID.E. (The Lampreys.) Body eel-shaped, naked, subcylindrical anteriorly, compressed be- hind ; mouth nearly circular, suctorial, armed with horny teeth, which are simple or multicuspid, resting on papilla-; those immediately above and those immediately below the opening of the oesophagus more or less specialized ; eyes present; branchial openings seven, arranged in a linear series along the sides of the " chest"; nostril on the top of the head; lips present, usually fringed; dorsal fin more or less deeply di- vided by a notch; the posterior part commonly continuous with the anal around the tail; intestines with a spiral valve; eggs small. These animals undergo a metamorphosis ; the young are usually toothless and have the eyes rudimentary. Such forms have, until lately, been considered as forming separate genera, which have been termed An;ni or ii; species i.i or L'O; found in all waters in temperate re-ions. They attach themselves to fishes and feed by scraping oil' the ll( Ji with their rasp-like teeth. Among our species, four groups, ap- parently of generic value, may be recogni/.ed, but the characters in may In- iilciiliciil \\ith 7.'. jmli/tn imi f!rd. from Chili, inrorn-ctly ilc- MTiin-.i in I'M..-. AC-. N.-ii. Sri. iiiihi. ts.'i, r.':», and thus characterized by Putnam, Proc. r." i. Boo. N.-it. iiivi. 1-7:;, n;o: •• 1 1 1 :nl ,-i In i nt inn- ili in I of Int.-il It-ii^tli, ;i IK! cunt aiiicd itliont H times in the len.^tli of tin- iilnloineli. Tiiil emil:iilieil 7 1<> ~ limes ill tutu] length. I'mm «f tiinrlHr htin-rn the '',i or liiihtli /mil- nf ijillx. (illlx tin on aidi aide. Length from 13 to UxJ iucbes. ( ..;i>l of Cllili.'' 3. PETEOMYZONTID^E LAMPETRA. 7 several instances need verification, especially in regard to the lingual dentition. (Petromyzontidce Gunther, viii, 499-509.) * Second dorsal contiuuous with the caudal. a. Maxillary tooth single, forming a crescent-shaped plate, with a distinct cusp at each end, between which is sometimes a median cusp. b. Dorsal fins two, well separated (lingual teeth pectinate) LAMPETRA, 4. l)b. Dorsal fin continuous, merely emarginate (lingual teeth obscurely tricuspi- date) AMMOCCETES, 5. act. Maxillary tooth double or triple, composed of two or three pointed cusps, close together, not forming a crescent-shaped plate (lingual teeth in two pairs, the posterior pair at least pectinate). c. Dorsal fin continuous ICHTHYOMYZON, 6. cc. Dorsal fins entirely separated PETROMYZON, '/. 4.— LAREPETRA Gray, 1851. Lamperns. (Gray, Chondropterygians, 140: type Petromyzon fluviatilis L.) Lampreys of rather small size, with the maxillary tooth single, devel- oped as a broad crescent-shaped plate, with a cusp at each end of it, the two separated by a broad interspace, in the middle of which is some- times a smaller cusp. Dorsal fin divided by a deep notch, which breaks the continuity of the fin; second dorsal connected with the caudal; mandibulary plate well developed, the number and arrangement of its teeth varying with the species; lingual teeth finely pectinate; lips usually conspicuously fringed. The species are little known. One of them, _L. flumatilis, is European, and is closely related to L. plumbea; the other described species are American. (Latin, lampetra, a lamprey, from lambere, to suck ; petra, stone.) * Maxillary tooth tricuspid, a small median cusp being present; mandibulary cusps comparatively few and weak. (Entosplienais Gill.) t Mandibulary plate with five cusps, the middle ones smaller. t Lips fringed with conspicuous papillae. 4. JL. ta'adeaitata (Gairduer) J. & G. — Three-toothed Lamj>rey. Lips thick, fringed with numerous papillae, each papilla standing in the middle of a little circular depression having a raised margin, which is partly concealed by a rugose tessellated plate investing the inner surface of the lips, and of the same horny nature with that which forms the outside of the teeth; both are softened and peel off in spirits. Four small, acute, conical teeth stand in a row across the upper part of this plate, and four larger ones occupy each of its sides, the upper and lower pairs being bicuspid and the middle ones tricuspid ; these stand on the S CONTRIBUTIONS TO NORTlS AMERICAN ICHTHYOLOGY - IV. >ides of *Jie maxillary rin^ or inner orifice, and have (heir ends turned toward ii : the inferior margin of this oriiiee is armed with a slight ly elir\ed denial piece, lia\ ill- live acute points or teeth (the OUttT beili^ larger than the three middle): opposite to it on the upper side of the oriiice is another piece having two lar^e, acutely conical teeth, with a smaller central one. The tongue is also clothed with a horny-looking substance, which is ed-ed anteriorly by a ro\v of about twenty liiie teeth. The dorsal lins rise in even curves, which are highest in the middle: the lirst is about one third of its own length from the second. Hack and sides bluish gray, with irregularly scattered yellowish patches; belly yellowish white. Si/.e rather large. — (Richardson.) Pacific coast of North America, ascending streams. t rii indi'iitnlH* GainlinT, Mss.: Kichardsoii. F. B. A. 293: Pctromi/:<»i i-ilia- tit* \\\>--, 1'roc. Cal. Ac. Sri. 1-.V1. 11: l'> Inniiii-on ciliatus et licidua Grd. I'm:. R. R. Snrv. •'•','. ilT'.t: h-hllnjoini^on Iridi ntatuu Gtlir. viii, 5Uti.) J{ Lips \\ithuuf IVinjfi-s of papillae. 5. 1^. «'t>ihexo«lon (Oill) J. &. G. — Six-toothed This species is said to dill'er i'rom L. tritlcntnta in the absence of a fringe of ])apilla- around the, Imccal disk, and in the presence of six ;ead of lour teeth in the upper transverse row. — (tlirard.) Sacra- jneiilo Kiver. . / on ir'idniliilnx C,n\. Pac. R. R. Surv. 377; not Rich. : i:,it<>*i>hc»in< iltt.rndon (iill. Proo. A.-. Nat. Sri. 1'hila. 1MW,:!3.) itMainlilnilary plate \\iih six cusps, which arc nearly cnual in size. «>. I., astori id-.l.) J. &. G. Lips fringed; head l\.\ in length; lirst dorsal lower than the second, separated I'rom it by a space nearh eipial to a third of its length; no anal I'm; \ellowish bro\\n, darker above. — ((iirartl.) Astoria, Oregon. ( PetromyzonaetoriQixsail, I'ac. K'. K*. Surv. !'•>'(!: ZbAt%om^onIatc \villi . i-hi lath.-i-sinni^, siilicqual li-i-tli. (Lampi Int.) 7. I.. i»liipiiBM':i (Ayres) c.\\\.—i.,;id-i;,i,,nd I.r«i. Lips fiin-ed; head s.] in len-tli; lirst dorsal much lower than the • •lid, and separated from it by a space equal to half of its own length ; tail lapei in- to a point ; a single bicuspid tooth on each side of the ori- tiec of the mouth. I'acitic coast; a small species, scarcely distinguish- able from the Mtiropran /.. tlnri, ».s . \.\n-. . |'i,.,-. c:,i. ,\c. Nat. Sci. l-.'.-l, 'J1^ : I'ctromyzon ayrcsi i' •"">: .liiiiii<><;il,.i , il, drill* ( iiraul, I'ac. li. K'. Surv. 3S3.) 3. PETEOMYZONTID^E— ICHTHYOMYZON. 9 5.— AMJttOCCETES Dume"ril, 1817. Brook Lampreys. (Duine~ril — Cuvier, Eegne Animal : type Petromyzon branch-lulls L. =tlie larval form of Petromyzon planerl Blocli.) Lampreys of small size, with the dorsal fin continuous, sometimes emarginate, but never divided into two fins, the posterior portion con- tinuous with the low anal fin around the tail; maxillary tooth single, / t> O/ broad, forming a crescentic plate, with a large bluntish cusp at each end, and sometimes a small median cusp ; lateral teeth very few ; tongue with two broad transverse plates, each with a median cusp ; species few ; our single species is scarcely distinguishable from the common "Pride" or "Small Lamprey" of Europe, Ammoccetes branchialis, («///-/.«c, sand; xoirr^ to lie.) 8. A. EaigCB* (Raf.) Jor. — Small Blade Lamprey. Head moderate, nearly as long as the "chest"; the mouth compara- tively small; lips with a conspicuous fringe of papilhe; dorsal fin high, considerably depressed in front of the vent, but not divided into two fins; the posterior lobe highest; anal fin evident ; anal tube conspicu- ous in the spring ; eyes moderate ; maxillary tooth with its cusps large, triangular, well separated; a small pointed median cusp usually present in the adult ; in younger specimens the median cusp is obsolete, and in half-grown specimens the tooth forms a curved plate without distinct cusps; mandibular plate curved, with eight to ten well developed sub- equal tooth-like lobes; inside of it is a plate bearing three teeth; lingual teeth transverse, trifid ; a plate on each side of the buccal orifice ; the remaining teeth inconspicuous. Bluish black above ; silvery below. Size rather small. L. G to 10. A small species ascending Western streams in the spring in great numbers to deposit its spawn. Great Lakes, Ohio Valley, and Upper Mississippi Eegiou. It is perhaps identical with the European Ammo- ccetes branchialis. (Petromyzon niyrum Baf. Icli. Oh. 84; Jordan, 349.) 6.— ICHTlIYOMYEOtf Girard, 1859. Silvery Lampreys. (Girard, Pac. E. E. Surv. s, 381 : type Petromyzon argenteus Kirtland.) Lampreys of rather small size, having the dorsal fin high and con- tinuous, with only a shallow emargination ; the teeth nearly equal over \ 10 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. ;he lai-e bnccal disk, the maxillary teeth being pointed, two in number, 8Cl dose i".u< 'Hi. T. witln -ut interspace, and not ionning a crescent -shaped ].latc; lateral teeth all nnicnspid ; mandibulary with IIUIIMVOU> close- pointed cusps, appearing like dist inet teeth ; lingual teeth in two serie>. the posterior series linely pectinate, with a median suture dividing it int.. a ri-ht and lei't cres.-eiit >haped comb; anterior series not divided : I In- pectina'coale.M-eni. This genus is most nearly ivla led toPetromyzon, dill'i-ring chietly in the eontinnons dorsal. The two known species in- habit tin- Mississippi Valley and the Great Lakes. (yOu;, fishj nb'w, to suck.) - M.indilnilary i>laU- with seven teeth. 9. I. artfClltCUS (Kirt.) Gnl.— *'iii!i:<>ii li»- Kirt. 1. c. 4?:5, with ]>latr. — /C/I//M/<>/;M/:«/I ttinnlii (!nl. I'ar. \i. R. Sins . ::]•.'. — Irlill,i/i>ini/~on liirudo Gthr. viii,rj()7. — .lnnnuplression in front of the \ent. A little known species, differing from the preceding, if at all, in the number of teeth on the mandibulary plate. Minnesota. (/r/i//i//n)/ii/;iii/ «I.X/«/;K//S i ii-il. I'ac. li. li. Surv. o.Sl.) 7.— PETUO.tlYZORT Linuajus, 1758. Sea (Arti-di Linna-iH. S\>lrma Natura-; typr l'ctri>i»>i;un inarinux L.) Lainpre\ s of medium or large si/e, \\ it h the maxillary teeth separate, pointed, and clo>r to-rther, not forming a crescent -sliaped jdate; man- (libiilai-\ plate \\iih seven to nine cusps; lingual teeth forming two crescent >haped plates on each side; first dorsal tin well separated from 3. PETROMYZONTID.E - PETROMYZON. 11 the second, which is continuous with the caudal. Species two — marine, ascending rivers. (n£-rpa, stone; iw^u>, to suck.) 11. P. mai'tailis L. — Great Sea Lamprey. Head moderate, but little longer than the "chest"; buccal disk large, with numerous conical teeth, arranged in oblique series, those nearest the oesophagus largest and partly bicuspid; two pairs of lunate, pecti- nate lingual teeth, one in front of the other, the serrations on the an- terior pair usually confluent; fins moderate, the dorsals well separated ; the second dorsal with a depression on the tail ; lips moderately fringed. Color olive-brown, mottled with blackish confluent patches ; dull brownish below. Size much larger than any of the other species. L. 24 to 36. Atlantic coasts of Europe and North America, chiefly northward, ascend- ing streams in the spring to deposit its spawn. (Petromyzon marinus L. Syst. Nat. ; Giinther, viii, 501 ; Jordan, 348. — Petromyson americanus Le Sueur, Trans. Am. Pliilos. Soc. i, 363. — Petromyson americanus Storer, Fish Mass. 231.) 12. P. jiigricaMS Le Sueur. — Lamper-eel. Head very large, longer than the "chest", 6J in length ; depth about 13 ; body little compressed ; dorsal fins rather low, distinctly separated ; eyes and mouth very large; mandibulary plate with 7 to 9 teeth; the rest of the buccal disk covered with rather large teeth disposed in ob- lique cross-rows, five or more in each row, some of the innermost bicus- pid ; anterior as well as posterior lingual teeth pectinate ; lips fringed. Coloration nearly plain ; bluish black above, pale below, usually a pale spot between the eyes on the top of the head. L. 12. A rather small species found along the Atlantic coasts of our Northern States, and ascending streams in the spring to spawn, some individuals remaining permanently in fresh water. Abundant in Cayuga Lake, N. Y., from which locality the specimens were taken on which the above description was based. (Petromyzon nigricans Le Sueur, Trans. Arner. Phil. Soc. new series, i, 385; Storer, Fish Mass. 253. — Ammoccetes flumatilis Jordan, 349.) This species is very different from the European Lampetra flumatilis. It is possibly only a variety of Petromyson marinus. Numerous other Lampreys have been described from our waters, but we find them un- recognizable. 12 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. CLASS III -ELASMOBRAXCHII. (The Sclachidiis.) Skeleton cartilaginous; skull without sutures. Body with median and paired tins; the ventral lins abdominal; shoulder-girdle developed, lyri- form: caudal lin heteroeercal, the upper lobe produced; gills attached to the skin by the outer margin ; gill-openings several, or single leading to >everal clefts; membrane bones not developed, except sometimes a rudimentary opercle; skin naked or covered with minute imbricated scales or hard plates, sometimes spiuous; no air-bladder; arterial bulb with three Aeries of valves; intestine with a spiral valve; optic nerves united by a commissure, not decussating; ovaries with the ova few and large, impregnated, and sometimes developed, internally; embryo with deciduous external gills; males with prehensile introniittent organs, "claspers," ;ii t ached to the ventral lins. Sharks, Skates, and Chimaeras. o7, a plate or blade; Pt'(JLi"/.'-ai gills.) ANALYSIS OF ORDERS OF KLASMOBRAXCHS. •Grill-openings slit-lik.e, 5 to 7 in number; jaws distinct from the skull. (Subclass Selachii.) t Gill-openings 1 literal ............................................... S.>r u.i, D. it (Jill-openings ventral ......... .. ................................ ..... J.'AI.K, E. "* Gill-openings single, leading to lour branehial clefts; jaws fnale.sc.-ut -with the. skull (subclass Holoccphali) ........................... Hoi.. » i KHALI. !•'. SUBCUSS SELACHIL (The Shark* heie understood, this subclass is equivalent to the Plagiostoma/fa of author-, and includes the orders or suborders /,', the Uays. and X//^r///, the Shark>: -loups which a IT perhaps hardly worthy of ordinal value. (TV//--, a shark, from nit." •/_•>-, cartilage.) ()IM)KR I) -SQUALL (Tin- N/////-/,-x.) (iill ojH'iiin.iis lateral, slit-like, live to seven in number; general form elongate, the body gradually passing into the tail. The typical sharks 4. SCYMNID.E. 13 and skates differ much from each other in appearance ; but intermediate forms connect the two groups closely. The position of the gill-openings is almost the only constantly diagnostic character. (Suborder Sclachoi- dei Giinther, viii, 353-433.) (Latin, squalus, a shark, from the Greek fa/lew T, a shark, which conies from yaA6j, a weasel, or other musteline animal, from resemblances in habits.) ANALYSIS OF THE FAMILIES OF SQUALL * Pectoral fins moderate, without deep notch at the base in front, t Anal fin absent. a. Dorsal fins without spine Sc YMNIDJE, 4. aa. Dorsal fins each preceded by a stout spine (rarely concealed in the skin). SPIN ACID J3, 5. tt Anal fin present. fc. Dorsal fins two. c. Dorsal fins both without spine. d. First dorsal fin behind the veutrals GINGLYMOSTOMATID^E, 6. dd. First dorsal entirely in advance of the ventrals. e. Caudal fin not lunate, its upper lobe many times longer than the lower, with a notch below toward its tip ; tail not keeled. /. Last gill-opening above the base of the pectoral. g. Tail moderately developed, forming less than one-third of the total length; eyes with nictitating membranes. Ti. Head normally formed GALEORHINID.E, 7. lilt. Head hammer-shaped or kidney-shaped by the extension of its sides SPHYRXLTXE, 8. gg. Tail exceedingly long, forming about half the total length ; eyes without nictitating membranes ALOPIIIXE, 9. ff. Last gill-opening entirely in front of the pectoral. CARCHARIID^E, 10. ee. Caudal fin lunate ; caudal peduncle with a keel on each side, i. Last gill-opening entirely in front of ventrals. j. Gill-openings moderate ; teeth well developed . LAMNIDJE, 11. jj. Gill-openings very large, nearly meeting under the throat; teeth small CETORHINID^E, 12. ii. Last gill-opening above the base of the pectoral. KHINODONTID.E, 13 ec. Dorsal fins each armed with a stout spine HETERODONTID^E, 14 bb. Dorsal fin single ; the first dorsal obsolete ; gill-openings 6 or 7. HEXANCHID.E, 15. * Pectoral fins very large, expanded at the base in front, this expansion separated from the neck by a deep notch ; no anal fin . SQUATINID^E, 16. SUPBE-PAMILT SCYMNOIDEA. (The Scymnoid Sharks.) FAMILY IV.— SCYMNID^E. ' (The Sleeper Sharks.) Sharks with two dorsal fins, both icitliout spine, and no anal fin; fins all small ; gill-openings small, entirely in advance of pectorals j mouth 14 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. but little arched; a long. deep. straight, oblique groove on each side of il : spiracle- present. (Tin- alienee of dorsal .spines chielly distinguishes this family from Sjiliniritltr.) (lenera six: species six or more, mostly of the Atlantic. (Giiuther, X]>!iia<'!r>als a)>mil equal: ii|i|n-r in-tli narrow: lower <|ii;!ilralr, with a hori/onlal ed^e ending i" :i point directed mi i wards .................................................... .SoMNiusus, 9. 8.— ECIIIXORIIINUS Blainville, 1616. Spinons Sharks. (Gtniodua Agassiz.) (Blainvillr, 1816; tyjir >•.///<[//« spinosits Gmelin.) T\vo very small dorsal fins without spine, the first opposite the ven- trals: no anal fins; skin with scattered large round tubercles, sur- mounted by prickles, like those on a bramble, and, like them, leaving n scar when detached. Mouth crescent-shaped, a la bial fold around the angle of the mouth ; nostrils midway between the mouth and the end of the snout. Teeth equal in both jaws, very oblique, the point Iteing turned outwards; several strong dent iculat ions on each side of the principal point. Xo nictitating membrane. Spiracles small ; gill-open- ings of moderate width. A single species of the East Atlantic, straying to our co;t.-,t. (i-/~.v<>-, :i hedgehog, or sea-urchin ; {>^fn shark.) I :t. t. spiiiosus (Omcl.) I'.lainv. — Xpinottx Shark; Jloinh'. "Spiracles behind the eye, behind the vertical from the angle of the. mouth. Teeth :;^:|:. Dorsal fins close together. Each tubercle with a small sjiine in the centre. P.nnvnish violet, with or without dark spots'' <: intlu-r}. A large shark of the coasts of Europe and Africa ; a stray individual lately taken on Cape Cod. limrlin I. inn. 1, l.~>ni); (Jiinthrr, viii, I.-*.) O.~SO.1I\IOSUS Le Sm-nr, HIS. •i HKirilUH Miillrl" iV Ilrnlr.) I 3aeUT, .J»mn. \<\ \al. Sri. I'liil.-i. l-l-. i, 'J.'-J ; ty]ir. ^i Slirli] Si/milii* mil i-'ni /ilnilux I'.locll.) I'.ody elongate : mouth Irausvei'sc, lit tie arched, with a deep straight >»\e ninning ba<-kward I'rom itsan-le: nost rils near t lie e\t I'emity of the. snout ; jaws feeble; teeth in upper jaw small, narrow, conical; lower 5. SPIN ACID M. 15 teeth numerous, in two or more series, the point so much turned aside that the inner margin forms a cutting edge, which is entire ; spiracles moderate ; no nictitating membrane ; gill-openings narrow ; fins all very small, the veutrals nearly opposite the second dorsal ; skin uniformly covered with minute tubercles. Species few, of the Northern Seas. (Latin, somniosits, sleepy.) 14. S. micvocephalaas (Bloch) Gill. — Sleeper Shark; Nurse. Body robust, rapidly tapering behind; greatest depth about one- fifth the length ; head somewhat less ; mouth moderate, upper jaw with five rows of small sharp teeth, which are incurved and lancet-shaped ; lower jaw with two rows of broad, quadrangular teeth, divided in their centres by a perpendicular ridge and directed outwards, about 26 teeth on each side; spiracles small; skin rough; fins small, the first dorsal about as large as the ventrals and larger than the second dorsal ; pecto- rals short; caudal short and bluutish. L. 8 to 20 feet (Storer). Cape Cod to the Arctic Seas. (Squalus microcepJmlus Bloch, Schu. 135; Somniosus Irevipinna Le Sueur, Journ. Ac. Nat. Sci. Phila. i, 222} Scymnus brevipinna Storer, Fish Mass. 235; Lcemargus borealis Gunther, viii, 426.) FAMILY V.— SPINACID^. (The Dog -fishes.) Body more or less elongate; head depressed; eyes lateral, without nictitating membrane ; mouth inferior, rather large, arched ; teeth com- pressed, variously formed ; nostrils inferior, lateral, near the front mar- gin of the snout ; spiracles moderate ; gill-openings moderate, five on each side, all in front of the pectoral fins ; dorsal fins two, eaeh armed with a spine ; the first dorsal in front of the pectorals ; anal fin wanting; caudal fin with, the lower lobe small or obsolete; ventral fins inserted pos- teriorly. Genera six or more ; species about fifteen ; rather small sharks, chiefly of the Atlantic. (Spinacidce, part, Gunther, viii, 417-425.) * Teeth eqnal in both jaws ; dorsal spines not concealed. a. Teeth very small, straight, pointed, each with one or two smaller cnsps on each * side CEXTROSCYLLIUM, 10. aa. Teeth moderate, simple, subquadrate, each with a nearly horizontal cutting edge, and a point directed outward SQUALUS, 11. * Teeth unequal, those in the upper jaw erect, triangular, those in the lower jaw more or less oblique ; dorsal spines hidden beneath the skin. CENTROSCYMNUS, 12. 16 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 1C.— CENTROSCYJLI.IILTI Miiller & Hcnle, IS::?. Black (Miillt-r A Hnilf. Systnnatisi-lie Beschn-ilniiig der Plagiostomen, 191; type 5/miax fiihrii-ii l.Vmli:inlt.) Teeth equal in both jaws, very small, straight, pointed, each with one or two smaller cusps on each side at base; month crescent-shaped, \vith a straight. oblique groove at its angle; spiracles moderate; gill-open- ings rather narrow; dorsal fins small, each with a strong spine; the .second dors;il entirely behind the ventrals. Onespecies. (//>-«»>. spine ; v, Scyll'nun, an allied genus, from azuMw, to rend or tear to pieces.) 15 — C. fabricii (KVinhardt) M. & IT.— Black Dog-fah. Body covered with minute stellate ossifications; color dark brown. A shark of the Greenland Seas, lately taken off Gloucester, Mass., by the United States Fish Commission. (Spinaxfalntrii KYinliunlt, Dansk. Vid. Sclsk. Fiirh. 1828, iii, xvi; Giintlier, viii, 425.) 1 1 .— SQUAL.US Linnaeus, 1758. Dog-fishes. (Acantlna* Risso.) (Artnli, Liimii'iis, Systonia Natm-a- : IVIK- Sijunhis (icanthias L.) i;<>dy ratlier slender; mouth little arched, with a long, straight, deep, oblique groove on eaeh side; no labial fold along the margin of the month; teeth rather small, equal in both jaws, their points SO much turned aside that the inner margin forms the cutting edge; spiracles rather wide, just behind the, eye; gill-openings narrow, in front of the pectorals ; tins modeniiely deyeloped, the first dorsal larger than second, much in ad\ ance of the \ entral fins, which are behind (lie middle of ! he body. ;di huii-h in ad\ ance of the second dorsal. Small sharks, abound- in- in the Temperate Seas. (Latin, xt]i<(tln*, a shark.) ' 1>"! .1! -I'iin- ii'H ^rmtvcii ; Its inBertion rather behind inner angle of the pectorals, 1<>. S. :i<-:iiillii;is L. — /•;./..// I><,:i-tixl, ,- /»,»,/-. tixh ; Hone Dog; 8kitlh--lender; snout ]>oiuted; head C>\ in length; depth about 8 ; slate eulor ahovc. pale below, back with \\ hit ish spots, especially ftl the \oiin--. L. 1 to .". led ; \\fiuht ."• to IT. pounds. mall sharp toothed shark, ranging \\ idely in thc^ Atlant ic, y«-ry abundant aloii'j, the shores of the Northern and .Middle States. It is someuhai \alued for its li\cis. fioni \\hich " I )og-lish " oil is extracted. American writers ha\c usually considered our species (SyiiaUui ameri- 8. GINGLYMOSTOMATID^E. 17 canus (Storer) Gill) as distinct from the European, but no reliable dis- tinctions have been pointed out. (Sqitalus acantkias It. Syst. Nat. ; Acanthias americanus Storer, Synopsis, 506; Acan- th'utH americanus Storer, Fish Mass. 232; Acanthias vnlgarls Giiuther, viii, 418. Squalus mil-kin (Grd.) Gill, from the Pacific coast of the United States, is considered by Dr. Giinther and others as the same species ; Spinax (Acanthi^.?) sucklii Girard, Proc. Ac. Nat, Sci. I'hila. 1854, 176; Squalus sucklii Gill, Proc. Ac. Nat, Sci. Phila. 1862, 499.) 12.— CENTROSCimiNlTS Bocage & Capello, 1864. (Bocage & Capello, Proc. Zool. Soc, 1864,263; typeCentroscymnmccplolepiaTSoc. &Cap.) Dorsal fins each with a spine, which is hidden below the skin; mouth wide, but little arched ; a long, deep, straight, oblique groove on each side of the mouth. Teeth of the lower jaw oblique, with the point more or less directed outwards. Upper teeth lanceolate, on a quadrangular base, with a single cusp. Spiracles wide, behind the eye. Gill-openings narrow, (zlv-pov, spine; ff-/.b>j.v<>-, an ancient name of some shark, from f;y.t'>;t.vt>-, a lion's whelp.) 17. C. coeSoIepis Bocage & Capello. Labial groove prolonged forwards, but separated by a broad space from that of the other side. Upper teeth very small, narrow and lan- ceolate. The distance between the nostrils is rather less than 4- the length of the pneoral portion of the snout. Lower angle of the pectoral rounded, not produced. Dorsal fins short, especially the first, the length of which (without the spine) is only about ^ its distance from the second. Extremity of the veutrals below the end of the second dorsal. Scales on the head and nape with stride, the others smooth, with a depression at the base. Uniform blackish brown. (Giinther.) Coast of Portugal and neighboring parts of the Atlantic, a specimen taken near Gloucester, Mass. (Bocage & Capello, Proc, Zool. Soc. 1864,263; Ccnfrophoruscoelole^is Giinther, viii, 423.) SUPER-FAMILY SCYLLIOIDEA. (The Scyllioid Sharks.) FAMILY VI.— GINGLYMOSTOMATID^E. (The Nurse Sharks.) Sharks with the first dorsal above or behind the ventrals ; no spines; anal fin present; caudal fin bent upwards, with a basal lobe; mouth inferior, with small teeth, in several series ; nostril confluent with the mouth ; nasal valves of both sides forming a quadrangular flap in front Bull. Nat. Mus. iso. 10 2 18 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. of the mouth, each being provided with a tree cylindrical cirrus; an upper and lower lip, the latter not extending across the symphysis; fourth and tifth gill-openings close together; eyes very small. The backward position of the first dorsal distinguishes this family from all others in our waters. (Jenera two; species about four; large sharks of the warm seas. ( X<-i/llii7-40!>.) 'IVi-tli in l>otli .jinvs in many series, each with a strong median cusp, anil one or smaller r iisps on car] i siilc ................................ GlNGLYMQBTOMA, 1 <• 13.-«INGLYIttOSTOITIA Miiller & Honle, is;<7. (Miillcr A Henle, XVic^nianii's Ari-h. 1^:57, p. — : type Stjiuilii* cirrntitx (inirlin.) The characters of this genus are those of the family above given, \vilh tin- addition of the following, which distinguish Qinglymostoma from \rhriun: teeth of both jaws in many scries, each with a strong median cusp, and one or two smaller cusps on each side. (/'^/O/jtwc, a hinge or hinge-like joint ; «•:•«««, mouth.) 18. G. o-irratuiH (duel, i M. & II.— yurse Shark. Uniform brownish; young specimens with small, scattered, round black spots; nasal cirrus reaching the lower lip; angles of the fins obtusely rounded; caudal fin forming nearly one-third of the total length. L. | the peetoral tin : eyes with nictitating membranes; head not hammer-shaped, the snout being longitudinally produced as usual among sharks. A large family of twenty or more genera and about 7. GALEORHINID^E - MUSTELUS. 19' sixty species; found in all seas. (Carckariidw part (Carchariina and Mustel'ma) Giinther, viii, 357-380, and 383-388.) * Teeth flat and paved, without cusps or cutting edges ; spiracles present. (Muntelince. ) «. No pit at the root of the tail; labial folds well developed ......... MUSTELUS 14. ** Teeth more or less compressed, with entire or serrate sharp edges. (Galeorhinina;.) b. Spiracles present. o. No pit at the root of the tail. d. Teeth small, each with a mediaii cusp and one or two small lateral cusps on each side ........................................... TRIACIS, 15. dd. Teeth larger, with a single cusp, oblique, notched and serrated, GALEORHINUS, 16. cc. A pit at the root of the tail ; teeth all serrate ; caudal fin with a double notch ............................................ GALEOCERDO, 17. bb. Spiracles obsolete. e. Teeth serrate, more or less (entire in the very young or very old) ; little oblique or nearly upright. /. Teeth well serrated (in the adult) ; those of the upper jaw compara- tively broad or triangular; those of the lower narrow and claviform, CARCHARINUS, 18. ff. Teeth scarcely serrated, constricted at base, narrow, claviform, and straight in both jaws ........................... ISOGOMPHODOX, 19. ee. Teeth all entire. ff. Teeth nearly upright, the points not much directed towards the sides ............................................. APRIONODOX, 20. gy. Teeth oblique and flat, the points turned to the right or left away from the centre, so that the inner margins are nearly horizontal and present a cutting edge .............................. SCOLIODON, 21. 14.— MUSTEL.US Cuvier, 1817. (Hound Sharks.) (Bellon, Cuvier, Regue Animal: type Mustelus vulgar ts M. & H.) Body elongate, slender, not elevated ; snout comparatively long and flattened; mouth crescent-shaped, with well-developed labial folds; teeth small, many-rowed, Hat and smooth, rhombic, arranged like pave- ment, alike in both jaws ; eyes large, oblong ; spiracles small, just be- hind the eyes ; pectoral fins large ; first dorsal large, not much behind pectorals; second dorsal somewhat smaller; anal opposite second dorsal and still smaller ; veutrals well developed ; basal lobe of caudal almost obsolete ; embryo not attached to uterus by a placenta. Small sharks, the smallest of the American species, known at once by the smooth, paved teeth. (Latin, mwttela, a weasel or martin ; the use of the word similar to that of 19. in. hi mi ii 9 us (Blainv.) J. & G. — Smooth Hniniil ; Dor/ SJiai-l: — Emis&ole. Body slender, tapering backward from the dorsal fin to the long slender tail ; snout depressed, moderately sharp ; mouth small, the teeth all alike, a fold at the angle of the mouth ; first dorsal rather large, 20 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. prolonged behind, nearly midway between the pectorals and veiitrals ; second dorsal smaller, hut larger than usual in sharks; anal slightly hrliind second dorsal, and much smaller: pectoral tins broad and large, reaching past trout of dorsal : back slightly keeled. Smallest of our sharks; abundant on the Atlantic coasts of both continents, especially noi-thward. Specimens from Cape Cod and from Venice apparently differ in no important respect. i.tilitirliiiiii* hi ii n ii lux Blainvillc Fannc Franc. 1 .-">. rtt ; Mnxl>-lnx nilt/nrix ( Jiinthcr viii, :;s;; Miixtrliix ruin* Ston-r, Fisli Mass. 247.) •JO. .11. rali font ir us Gill. First dorsal beginning over terminal third of pectoral ; its acute point not reaching to insertion of veiitrals; anterior angle of dorsal blunt ; second dorsal similar to first, but smaller; snout rather more pointed Than in most of the species. D. IX + 17 ; A. 18; P. 22. Coast of Cali- fornia. (GUI.) Scarcely different from the preceding. (Gill. Proc. Ac. Nat. Sri. Pliila. W14. 14-. > 15.— TRIACIS Miillcr A H.Milc, 18IW. ix Gill. ) 'I'miki* Miillcr & Hcnlc, Magazine of Natural History. \ol. ii : type Trinlix Miillci A- Hcnlc.) Body compressed, elongate: mouth large, crescent-shaped, with well- developed long labial folds: teeth small, numerous, similar in both jaws, each with a longer median cusp, and one or two smaller ones on each side ; eyes small, with nictitating membrane: spiracles small, be- hind the eyes; no pit ai the root of the caudal; no lower lobe to tin- caudal : 111 :-t dorsal Jin opposite the space between the pectorals and \cntials. Pacific and Indian Oceans. (7/»£?r, three : -.:-. point.) '2 I . 'I'. >«<>iiiif':isj>i:iJtas (Jirnnl. — /><»./ •- Snout moderately produced, rounded. Nostril with a broad anterior (lap. '1 he lirst dorsal Jin is nearly midv. ay between the pectorals and \eiitrals.ihe second is not much smaller than the lirst, and nearly in advance of the anal. I'pper p;irts with well defined black cross bands, nanower than the interspaces. A low of rounded black spots along t lie sides oi the body, alternating with the iiiterdorsal cross bars. Coasts • >! ( 'alilornia." /< hi.-, f, /i.s A\ n\s, Proe. Col. Ac. Nat. Bci. l~.M. L8. V'2. 't'. IH cjlei (INI > Putnam. <'i>lnr iiiiilorin reddish brown above, pale below, the pectoral, ventral, and anal lins margined with paler; snout produced, slender; otherwise 7. GALEORHINIDJ2 - GALEOCERDO. 21 essentially as in the proceeding (GUI). California. A single young specimen known. (liMnotriacis hciilei Gill, Proc. Ac. Nat, Sci. Phila. 1802, 486.) 16.— GAIJEORHINITS Blainville, 1816. Topes. (Galeus Cuvier, 1817.) (Blaiuville, 1816: type Squalus galcus L. ) First dorsal opposite the space between the pectorals and ventrals ; mouth crescent-shaped, with the teeth alike in both jaws, oblique, notched, and serrated; spiracles present, small; nictitating membrane present ; no pit at the base of the caudal tin ; caudal fin with a single notch. Tropical seas. (yatt<>-, a kind of shark colored like a weasel; shark.) 23. G. galeus (L.) Blainv.— Tape. A short labial fold on both jaws ; teeth ij-f • Second dorsal fin only one-third the size of the first and somewhat in advance of the anal. Length of tail nearly equal to distance between dorsals. (Giinther.) Europe to the Indian Ocean. " San Francisco." (Giinther.) (Squalus f/alfiix 1.. Syst. Nat. ; Galeus camx Giinther, viii, 379.) 17.— GALEOCERDO Miill.-r & Henle, 1H37. Tiger Sharks. (Miiller & Henle, AViegmaun's Archiv, 1837 : type Galeocerdo Ut/rimm Miiller <5L Henle.) Mouth crescent-shaped ; teeth nearly equal in both jaws, oblique, ser- rated on both margins, with a deep notch on outer margin ; spiracles present ; caudal fin with a double notch ; a pit on the tail above and below at the base of the caudal tin ; first dorsal opposite the space be- tween pectorals and ventrals. Large sharks, found in most seas. (^a/£« -, a kind of shark, marked like ,va/6j, the weasel ; -/.zpdoj, a fox or weasel ; •/.£pdt>--, craft.) 24. G. tigriuus Miiller & Henle.— Tiger Shark. Color brown, with numerous dark spots larger than the eye ; caudal fin forming about one third of the total length, much longer than the space between the dorsal fins; second dorsal somewhat in advance of the anal; a long labial fold along the upper jaw. (Giinther.) Cape Cod to Indian Ocean ; a rather large shark, known by its variegated colora- tion. (Miiller & Henle, 59 ; Giinther, 378.) 22 CONTillBUriONS TO NORTH AMERICAN ICHTHYOLOGY - IV. IS.-t'ARCIIAKINUS IJlainvillr. IMC. (Cynocephalus Klein, Gill.) ( Citi-clmr'nix Cn\ i<-r, nut of K:itmr>i|ue. ) ii Miilli-r »fc Ilt-nli-.) iii ( Jill.) (lilainvilli- l~l(i : type ' '«/•< •luirinnx < iniuni rmnii Hlainvillf. ) I,arue sharks, without spiracles, with tin- troth in both jaws strongly serrated in the adult, those in the upper jaw broad, those below nar- rower, straight, and claviform ; lirst dorsal lar.ue: second dorsal much smaller, usually not larger than the anal. Species numerous in tin- tropical seas. (/.d(ij>a/.u-, rouo-h ; /('."/r,. shark ; abbreviated 1'roin Carcha- rorhinus.) ' l'.uil\ :iuil licinl slrndiT : dorsal tin inserted midway between ])eetorals and veu- trals ( ( 'an- 25. C. uI:iuriiN (L.) .Tor. & GiUt.—Ci-i-nt llhic Shark. ••Snout very lon^, nostrils rather nearer to the mouth than to th£ extremity of the snout ; no labial fold except a groove at the an^le of the mouth : teeth of the upper jaw oblique, scarcely constricted near the base ; lower teeth slender, triaug'ular in young examples, lanceolate, with a broad base, in old ones. Pectoral (in lonjr, falciform, extending to the dorsal, which is nearer the ventnils than the root of the pectorals." ((i'dn- fltrr.) A lar-ie shark of the warm seas, occasionally taken on our coast. linn-iix L. Syst. Nat.; Ciin-lniriiix \\ ; lirsi dorsal rather lar^e; second smaller than tlu- anal, and eoiisiderabl\ produced behind; pectorals lar.ue, talciform. .V lai.^e shark, reaching a length of nine or ten feet, inhabiting the North Atlantic and frequently taken on our coast. ,:i,i/, i. ,,/,.,/,, l.r Sin-nr, .lourn. Ac. Nat. Sei. 1'liila. \-\>-. i, 'J-1:'. ; ('art-hanax "!••" in «- ( JimlhiT, viii, '.'•('•*'<. ) •27. <\ niillH-in Mull, i A 11,-nlr) .F,.r. A (Jill..— /.7i/< • Sh. C. lamia (Risso) Jor. & Gilb. This species was provisionally identified by Prof. Putnam from a tooth obtained on St. Peter's Bank belonging to a fish estimated to have been at least thirteen feet in length. (Goode and JJean.) In this species the upper teeth are little oblique, serrated, broad, and regularly trian- gular ; dorsal large ; the second dorsal smaller than the anal ; teeth S (CWnther.) (Carcharias lamia Giinther viii, 372; Prionodon lamia Goode & Bean, Bull. Essex lust., 1879, 30.) .19.— ISOGOMPHODON Gill, 1861. Sharp-nosed Sharks. (Gill, Ann. Lye. Nat. Hist. N. Y. vii, p. 410: type Carcharias (Prionodon) oxyrhynchus Miiller & Henle.) This genus differs from Eulamia principally in the dentition ; the teeth are similar in form in both jaws, constricted at the base, claviform and straight, their edges scarcely serrated; the snout is slender and rather conic and pointed. Large sharks, of the tropical seas. (?j.\. ^inaatli-tootlicd Sharks. AIH-IOII MiilltT A Hriilr, ] in-occupied.) .(iill, Ann. l.yc. Nat. JFist. N. V. vii. Ill : type SqvtUlU punctattu Mitch.) Snout more or less produced and conic: teeth entire, without serrie or basal cusps, all of them narro\\ed on a broad base, the lower erect, the upper cm-; or only slightly oblique; dorsal more or less posterior, opposite the space between pectorals and ventrals. (a, privative: -^t'w,, saw : <«"",, tooth : the edjjes of the teeth being always entire.) . A. IMIOK'tatllh (Mitcli.) (Jill. — Siniiiitli-liMithal Shark. •• Distance of the extremity of the snout from the. mouth equals that between the nostrils. Pectoral fin subfalciform. extending to the end of the dorsal. Second dorsal much smaller than the first." (G tint her.) Atlantic; probably not common on our coast. ^•limlni iiinirldtHK Mil. Lii. A I'liil. Trans. X. V. i. -1H:1, : < \in-liariafi ixodon M. «.V H. :W: Carc/iaruw puTJcto£i/« Gtinther, viii, :ir>l.) 21.- Si'OtlOBOIV Miill.T & Ilenlo, is;??. Oblique-toothed Hlutrkx. i.Miilli-r A llc-iil<-. \Vir»in; inn's Archiv 1'. Xaturji. iii : type Sculimloii lutirdiidim M. A II Sharks with the teeth entire, oblique and flat, the points directed toward the sides of the mouth, .so that the inner margins are nearly hori/.ontal. and present a smooth cnttinu'ed^e. those in front more nearly erect ; teeth not swollen at the base; each of them with a deep notch on the outer margin below the sharp point ; no spiracles: a pit at base ol tail: first dorsal well in front of ventrals, much larger than second. ./ •"-. t\\i>ted or crooked; ddibv, tooth.) :iO. s. «'rr:r it»v;r (Richardson) Gill.— 5/mrp-no«ed mall. sli-htl\ behind, and rather smaller than the anal; anal (in much shorter than distance from anal to ventrals: a slight furrow along' 8 SPHYNID^R - RENICEPS. 25 the middle line of. the back, ending in a pit at the root of the tail ; pec- toral fins -rather large; veutrals .small. Color gray; caudal fin with a conspicuous narrow blackish edge. Newfoundland to South America ; common southward. Size rather small. (Squalus (Carcharian) terrce-uorce Ricliarrlson, F. B. A. Hi, '289: (htrSutrlax icrrm.-uwce Gunther, viii, .560.) 0 FAMILY VIII.— SPHYRNIDJE. (The Hammer -headed Shark*.) General characters of the Galeorhlnidas, but the head singularly formed, kidney-shaped or "hammer "-shaped from the extension of its sides, the nostrils being anterior and the eyes on the sides of the '"hammer"; mouth crescent-shaped, under the "hammer"; the teeth of both jaws simi- lar, oblique, each with a notch on the outside near the base ; no spira- cles; last gill-opening over the pectorals; first dorsal and pectorals large, the dorsal nearer pectorals than veutrals ; second dorsal and anal small; a pit at the root of the caudal; caudal fin with a single notch towaid its tip, its lower lobe developed. Genera 3; species 5 ; inhabiting most seas. Large sharks, known at once by the singular form of the head, ((^irchariida'^ part: group Zygasnma Giiuther, 380-383.) * Nostrils near the eyes. a. Nostrils simple, with Ihe frontal grooves rudimentary or obsolete ; head reni- form, its anterior and lateral margins confluent, forming a semicircle. RENICEPS, 22. aa. Nostrils "with grooves extending in front toward the middle of the head ; head truly hammer-shaped ................... .... .......... SPHYRNA, 23. 22.— RENICEP§ Gill, 1861. Bonnet-headed Sharks. (Gill, Ann. Lye. Nat. Hist. N Y. 1861, viii, p. 412: type Squahis Hbnro L.) Head reniforin, the anterior and lateral margins confluent, forming a regular semicircle, the posterior margins of the sides of the hammer very short; nostrils close to the eyes, with the grooves indistinct. (Latin, rena, kidney ; ceps, head.) 31. R. tlBjlBl'O (L.) Gill.— Shovel-head Shark ; Bonnet Head. Body rather slender, not much compressed ; head depressed, semicir- cular in front, reniforin, the posterior free margins short, the lateral mar- gins continuous with the anterior; pectorals large; first dorsal high, midway between pectorals and vein rals ; second dorsal much smaller, produced behind, higher and shorter than anal; ventral fins moderate; caudal moderate; mouth small, crescentic; teeth small, very oblique, with a deep notch on the outer margin. Color uniform ashy, paler 26 CONTRIBUTIONS TO NOR III AMERICAN ICHTHYOLOGY - IV. beneath ; lic.nl I.1, in length, (! to tip o«' caudal; width of head slightly U^N than length i>!' head. I,. .'! to >/««/«« ;//nnoiperjaw on each side much smaller than the others; gill-openings moderate, the last one above the root of the pectorals; m> uirt!t«fiii feet. A small voracious shark with very sharp teeth, rather common on our Atlantic coast. i >; species (i or more. Those inhabiting our coasts have been much confused by authors. (Ldiiiniilir, part, (liinther, viii, oSU-.'Wl*.) Teeth with fill in- edges. «. Teelli \\iihoiit basal cusps, lon^, Hexiious, prismatic. ;nul acute.. -I8URU8, 26. IKI. Teeth, or must ol' them, willi :i small cusp on each side at base, compressed, sharp, and somewhat triangular ................................ LAMXA, 127. **Teeth with serraied ed^es. compressed, and triangular iu form . . O.vuciiAKODOX, 28. 26.— ISURUS Ralines,|Uf, IrilO. Porbeagles. (Oxyrlrina Ag. ) (Ratines(|iie. ( 'aratteri di Alciini Xnovi tiencri: type IXHI-H* <>.ri/rlii/>icliitx Kat'. — ^ri/r/nwfl epallanzanii l?on. i Snout rather long and pointed; first dorsal and pectorals large : sec- ond dorsal and anal very small: caudal peduncle slender: teeth long, lanceolate, with sharp entire cut t ing edges and no basal cusps. (.;V«r, eijiial: '••»«/, tail ; I he I \vo lobes of t he tail being nearly equal, as in all the members of this family.) * Firs I dorsal inserted eniirch liehind peeioraU. nearly midway between pectorals and veil Ira Is. ( Imiro/ixix (Jill.) «.'». I. ^lillirtis i.M. A II. > .lor. A (Jill.. — .1/,/c/,,,-, / This sj)ecies, if really occurring on our coast, will be known from the other Ixnri by the position of the dorsal, which is distinctly behind the 11. LAMNID^: - LAMNA. 29 pectorals, nearly midway between them and the ventrals. This position is represented in DeKay's figure (Nat. Hist. N. Y. Fishes, pi. 63, fig. 206). Atlantic Ocean ; Cuba (Poey). (Oxyrhina ijlauca Miiller & Henle, 69: Lamna punctata DeKuy (not of Mitchill), 352: Isuropsin dekayi Gill, Aun. Lye. N. Y. viii, 153: Lamna glauca Giiutlier, viii, 391.) ** Dorsal tin inserted close behind the root of the pectorals, ninch nearer pectorals than ventrals. (Isurus.) • 36. I. oxyrhyiiclius Raf. — SJiarp-nosed SharJc ; Mackerel Shark. "Praeoral portion of -the snoiit as long as the longitudinal axis of the cleft of the mouth, tetrahedral, pointed. Angle of the mouth midway between the gill-opening and nostril. Teeth — on each side ; long, lan- ceolate, with sharp lateral edges, without basal cusps. The third tooth on each side of the upper jaw is much smaller than those next to it. Gill- openings extremely wide, the width of the first being rather more than its distance from the last. Origin of the dorsal tin at a very short dis- tance from the base of the pectorals, which are falciform, the length of their lower margin being one-fourth of that of the upper." (Gimther.) (Storer's figure of "Jjamna. punctata" (Fish. Mass. pi. 37, f. 1) repre- sents, so far as the position of the dorsal is concerned, the present European species, instead of the preceding. Xo mention is made of the presence of lateral cusps on the teeth. The occurrence of a true Isurus on our coast does not seem, however, to have been verified, although it is not improbable.) (Lamna punctata Storer, Fish. Mass. 225: Lamna spallanzanii Giiuther, viii, 390: ^ oxyrkyncliiis Raf. Caratteri, etc.) 27.— LAMNA Cuvier, 1817. Pt.rbeagles. (Cuvier, Regue Animal, ii : type Xt/mil/i* corniibicHK Gmrliu.) Body short and stout, the bade considerably elevated ; snout promi- nent, pointed ; teeth triangular, pointed, entire, each one with a small cusp on each side at base ; (one or both of these sometimes obsolete iu the young on some of the teeth ;) gill-openings wide ; dorsal and pectoral lius somewhat falcate ; second dorsal and anal iins very small, nearly opposite each other ; first dorsal close behind the root of the pectorals. (Aa/jiva, a kind of shark, from /«//:«, a horrible anthropophagous monster, into which a daughter of Belus was changed by Juno, because she was beloved by Jupiter ; a bugbear used by the Greeks to frighten refractory children.) 30 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. :17. I.. < 01 inil>M :i ilimel.l Fleming. — Ilfitmiiiiri* >'//<»/•/. • ; I'/irlmi,/!,' ; Tope. Snout conical, pointed, rather longer than tin- cleft ()f the mouth; teeth }- or " on each side ( ' ; or "' in Kuropcan specimens, fide (liinther) ; 11 10 1.' 14 the third tooth on each side in the upper jaw small : lirst dorsal begin- ning over the axil of the pectorals; color -ray. A la rye and tierce shark of the North Atlantic, not till lately recorded from our coast. (A specimen in the Museum of Mutler University, from 'which the above account was taken, was obtained by Dr. T. II. l>ean at Wood's Hole, Mass, Si/iinliin : ciiriiiiliii-iix (imelin, L. i, 1497; Giinthrr, viii, '.W.) 2§.--CARCIf AKODON Smith, 18—. Great White Shark*. (Sir Andrew Smith. 1'ror. (Jeol. Sue. London, — : type f.'archtirndnn cupaixix Smitli-^C. rondeleti.) This genus dilfers from Isuriix chielly iu the dentition, the teeth being large, Mat, erect, regularly triangular, their edges serrated; first dorsal moderate, nearly midway between pectorals and ventrals; second dorsal and anal very small; pectoral large, ventrals moderate; caudal -peduncle rather stout; spiracles minute or alisnit. Sharks of very large size ; found in most seas, (-/.'/.fr/an,,;, rough; <'^<»-^ tooth.) 38. pectorals; caudal tin large and strong. Color leaden gray; tips and eil-cs of pectorals black (Siorcr). One of the largest of the sharks, reaching a length of lift ecu feet and the weight of nearly a ton. It is found in all temperate and tropical seas, but is rare on our coasts. American specimens have been named ('. otli, but are probably not distinct from the Km opcaii. Mullc-i <\ llenle, PlagiostoniOB, ?0j (iiinllier, viii, :!'.(•,': Ctirrlniriiis ntirnntli Stofer, Moaa. •.': FAMILY XFI.— ('K'H )IMIINI D/E. * I The /ia.^ Shark> of immense si/.e, with the gill openings extremely wide, ex- tending from the hack ncarl.N to the median line of the throat; all of I lii-m in front of the pectorals; mouth moderate, the teeth very small, 13. RHINODONTID^E 31 numerous, conical, without cusps or serratures ; no nictitating inem- bran?; spiracles very small, above the corners of the mouth; first dorsal large, midway between pectorals and ventrals; second dorsal and anal small; caudal tin lunate, the upper lobe considerably the larger; caudal peduncle keeled; pectorals and veutrals large. A single genus, with probably but one species; the largest of living sharks; inhabiting the northern seas, (.bamnidcv, part, Giiuther, viii, 394; genus SelacJie.) 29.— CETOREHNUS Blainvillc, 1810. Baalring Sharks. (Selachc Cuvicr.) (Blaiuville, Bull. Soc. Pliilom. 1810, p. 169: type Cctorhinus gunncrl Blaiuv. = Squalus maximus L.) The characters of the genus are included above. (*>/-"7, whale ; fnvy, a shark (Squat-ilia), from /nvrh a file or rasp, the rough skin of the shark being used for polishing wood and marble.) 39. C. maximus (L.) Blaiuville. — Basking Shark. Body rugose, the skin very rough, with small spines ; head small ; snout blunt ; eyes small ; teeth in six or seven rows in each jaw, about 200 in each row ; first dorsal large, triangular, over the space between pectorals and veutrals ; second dorsal much smaller, rather larger than anal ; tail large. Largest of the sharks, reaching a length of nearly forty feet ; found in the Arctic seas ; straying southward to Portugal and Virginia. (Squalns maximus L. Syst. Nat. : Selachns maximus Storer, Fish. Mass. 229 : Selachc maxima Giinther, viii, 394.) FAMILY XIII.— RIIINODONTID^E. (The Whale Sharks.) Origin of the first dorsal fin somewhat in advance of the ventrals ; the second small, opposite to the anal ; both without spines ; a pit at the root of the caudal, with the lower lobe of the caudal well developed ; sides of the tail with a keel ; no nictitating membrane ; spiracles very small ; mouth and nostril near the extremity of the snout ; teeth very small and numerous, conical ; gill-openings wide, the last one above the base of the pectorals. Large sharks, of warm seas. Two species are known, Rhir.odon typicus from the. Cape of Good Hope, and the follow- ing. (Khinodontidce Giinther, viii, 396.) * Teeth each recurved backward and acutely pointed, swollen, and with a heel-like projection in front rising from its base MICRISTODUS, 30. 32 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY- -IV. 30.— miCRISTODFS (Jill, 1865. iCill, Pror. Ac. Nat. Sri. Phila. 1 >(>">. 1??: (»»• Mtcrixloilux piniclnliin (>\}\.) V Tliis ^enns is known from its teeth only. Th'-se are described ;is fol- lows: ''The teeth are fixed and extremely minute, the largest little more ihiin a line in length (in a shark 20 feet lonii') and decrease towards the ends of the jaw; they are disposed in regularly transverse rows. of which there are Hi4 to 1G7 on each side, while in front there are l.'J to 1<> in each transverse row ; each tooth is recurved backwards and acutely pointed, swollen and with a heel-like projection in front rising from its base.'1 — (Gill.) (//.'x/cx)-, small; 'cr-u-, an upright projection; d£ou?, tooth.) 4O. 31. GMiiirfatus Gill. A very lar^e spotted shark found in the. Gulf of California. (Gill, Proc. Ac. Xat. Sci. Phila. ISiKi, 177.) FAMILY XIV.— HETERODONTIIbE. (The Port Jackson Xlinrks.) Sharks with two dorsal tins, both provided with spines ; the first dor- sal opposite to the space between pectorals and ventrals: the second in advance of I lie anal. Body elongated, obtusely trihedral, gradually taper- ing from the anal region towards the caudal fin; head high, with the fore- head declivous, little prominent; nostrils continent with the mouth; month rather narrow, the upper lip divided into seven lobes, the lower with a fold : spiracles small, below the lower part of the eye ; no nictitat- ing membrane; ^ill-openings rather narrow; dentition similar in both jaus, vi/, small obtuse teeth in front, which in the yon nu are pointed. and pro\ ided with three to five cusps; the lateral teeth lar^e, pad-like, twice as broad as lon«>-, arranged in oblique series, one series beiii^ formed by much larger teeth than those in the other series; caudal fin moderate. (ienera 1. L', or.'J; s]>ecies about h inhabit in-' the I'acilic ( >cean. Of much interest to palaeontologists from their supposed relation focertain extinct tyjies. ^('cnlritriiHiliild- Giinlher, \'iii, 117, -IIS; but H<'lcr»(llils liciiii; lil t lr rlou^a i nl : nn-lar irdli Hal anil cloM-lv riinlij;-||uM«( .................................... (iVI.MIM I I |;< )DI 'S. ',\\ . si.— GVKOFI>KI;KODIIS cm. i. ill, I'l.ic. .\i . Nat. Sri. I'hila. i-ii'j, i-'.t; tyi"1 Ceatroaon fraaiciaci The characters distin^iiishiiii;- this ^roiip from IlrlcnxlontiiK are thus jiiven by Professor (Jill: 14. HETERODONTID^E - GYROPLEURODUS. 33 "Iii the latter genus, the branches of the lower jaw are at lirst con- tiguous and diverge from each other at an acute angle, while in front of the oblique whorls of molars, and between the acute teeth of the front which encroach on the sides, a cordiform area exists. The lateral or molar teeth are numerous, and arranged in oblique whorls, which rapidly increase in size to the fifth, behind which they again decrease. The branchial apertures are also comparatively large, the first being longer than the length of the branchial region. "In GyropleuroduSj the- brandies of the lower jaw are widely separated by an interval rounded in front and becoming wider behind, the sides themselves being curved outwards; the acute teeth are confined to the front and the molar teeth are few and disposed in about four whorls, the first three of which slightly increase, while the fourth is almost rudimentary. The branchial area is almost oblong." Head short and high, broad, but with subvertical sides; the forehead very declivous from eyes, and with the snout wide and transverse, but prominent; two blunt, diverging ridges are continued from each side of the snout and abruptly merge into the more conspicuous superciliary ridges, the interval between which is nearly plane ; teeth in front digi- tated, with three or four cusps, quiucuncially distributed in rows slightly converging toward the middle; in the upper jaw, on the sides, molars oblong and flattened, arranged in about four oblique whorls, uniform or increasing backward, except the last, which is smallest; on the sides of iihe lower jaw, also, are molars oblong, with flattened crowns, and arranged in transversely oblique whorls, but decreasing backward (Gill). One species known. (YL>{><>-, ring or whorl; -nhupw, side; oi>. I'mc. C;il. \ai. S«-i. i, ?•_' : .\utdiii i/nchii^ mdcnlniitu Gill, Proc. Ac. X;ii. Sci. 1'liila.. l-ti'J. I'.i:.. .-Mi.l l^C.l, M'.»: Xotui-liynclius boreiilis Gill, Proc. Ac. Nat. Sci. Phila. iHil, ir.ti. 16. SQUATINID^E SQUATINA. 35 SUPER-FAMILY SQUATINOIDBA. (The Squatitioid Sharks.) FAMILY XVI.— SQUATINID^E. A (The Angel Sharks.) Ray-like sharks. Body depressed and flat; mouth anterior; teeth conical, pointed, distant; pectoral fins very large, expanded in the plane of the body, but free from it, being deeply notched at the base ; ventral fins very large ; two small subequal dorsal fins behind the ventrals ; no anal fin ; caudal fin small ; gill-openings wide, subinferior, partly covered by the base of the pectoral ; spiracles wide, crescent-shaped ; behind the eyes ; nostrils on the front margin of the snout, with skinny flaps. A single genus, with perhaps but one species. Sharks of singular appear- ance, inhabiting most seas. (Rhinidw Giinther, viii, 430.) 33.— SQUATI1VA Dnme'ril, 1806. Angel Sharks. (Ehina Klein. ) (Aldrovandi, Duine~ril, Zool. Anal. 1806, : type Squaliis squutlna L. — Squatina an- gel us Duni.) The characters of the genus are included above. (Squatina, the Latin name of S. angelus, from squatus, skate.) 43. S. angelus Dnme'ril. — A ngel-fwh ; Monk-fish; Angel Shark. Bluish ash-gray above, much blotched and speckled ; beneath white ; caudal fin short triangular, lower lobe longest ; dorsal fins short and; high ; skin rough, with small stiff prickles, largest along the middle line of the back ; eyes small. A small shark, with expanded pectorals, like a ray, found in most warm seas, not very common on our coasts. Our species has been generally considered as distinct from the Euro- pean, under the name S. dumerili, but without evident reason. A spe- cies considered by Dr. Giinther to be identical with Squatina angehis also occurs on our Pacific coast. (Squalus squatina L. Syst. Nat.: Squatina angelus Dumeril, Zool. Anal. 10:2: Squalus dumenll Le SINMU-, Journ. Ac. Nat. Sci. Phila. i, 225: Ehina squatina Giinther, viii, 430: iwi calif ornica Ayres, Proc. Cal. Ac. Nat. Sci. 1859, 29.) 36 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. ORDER E.- (The Rays.) Gill-openings inferior, slit -like, live in number: spiracles present; no an;il tin: dorsal tins, it' present, inserted on tin- tail; body typically disk-like, broad and Hat. the margin of the disk being formed by the expanded peetnrals. Tail comparatively slender, the caudal tin small. With the exception of the h'tuitla; most or all of the rays are ovo-vivi- parous. (Suborder Jhtfoidci Giinthcr, viii, 434-41)8.) (Latin, raid or rnjn. a ray.) Tail comparatively thick, usually with rayed dorsal and caudal lins; no serrated caudal spine nor separate cephalic tins. (I'uclnjuru.) iNii>.K. ll>. co, Klectric organs absent; disk and tail more or less prickly ...... RAMD.K. •_'(>. * Tail very slender, whip-like, ii.s tins, if any, small and near its base. (Mnxlic (I. Pectoral lins uninterrupted, continent around the snout : teeth small. iltl. Pectoral lins interrupted, the appendages on the snout (" cephalic lins") separate from the pectorals. c. Teeth large, Hal, tessellated .......................... MYIJOIIATIIU;, 'J'J. « . Tecih very small. Hat or tubercular .............. CKIMIAI.OI-TKKID.K, '2'.i. SUPEK-PAMILY PRISTOIDEA. (The I'rtNtoiil Itiii/x.) FAMILY XVII.— PRISTINE. (Tin -sVnr-//.s7/r.s-.) Body elongate, depressed ; pectoral lins moderate, the front margin «|uite free, not extending to the head; snout produced into a very long, thin. Hal blade, which is armed with a series of strong tooth like pro- cesses along ench edge; teeth in jaws minute, obtuse: gill-openings moderate, inferior; spiracles wide, behind the eye: nostrils inferior; no tentacles ; no nicl itat ing membrane ; dorsal I'm- large, w ithoitt spine. the first nearly opposite the ventrals. Caudal well developed, bent upwards; a fold along each side of tail. A single genus, \\itli live or more species, inhabiting warm seas, sometimes ascending the rivers. A ;amil\ of >hark>. /V/'.v//o/>//or/1, 196; Streets, Bull. U. S. Nat, Mu- \ii. l-77.r.."): Rhinobaiua leucorhynchua GttntheT, viii. -144.) SUPER-FAMILY TORPEDINOIDEA. ( The Torjx'dinoltl h'tti/x.) FAMILY XIX.— TORPEDINID^E. (The \nnih-jittlien.) Rays with the trunk broad and smooth: the tail comparatively short and thick, with rayed caudal lin. and commonly two rayed dorsal fins the first of which is over or behind the ventrals; a longitudinal Ibid on each side of tail: anterior nasal valves confluent into a quadrangular lobe ; an electric organ composed of hexagonal tubes between the pectoral fins and the head. (ieneraii; species about 15 ; large rays, noted for their power <»!' giving electric shocks : found in most seas. (Torpedin'nhc (liinther. viii. I IS-l.Vi.) " l><>]-:il lin- iv.n: \i-ntr;ils M'paiutr ; s|iir;irli-s \\cll behind the ryes ____ TOKPKDO, lili. 36.— TOKPEI>O niuiirnl. i 1 iimii'i il, Y.«><\. Anal.vl. |>. Id1.1: i\pr /.'nin l<>i-i><-il<> L. ) ric i.i\> u ilh the disk very broad, aliruptly contracted at the tail : two dorsal iin- : caudal fin well developed ; ventral fins large, sepa- rate: spiracles lar.^e, placed behind thee\cs; mouth small; teeth pointed; -kin peri'eciK -mootli. l.ar-e rays, chiefly inhabiting the Atlantic. 20. RAIID^E RAIA. 39 46. T. occidental!* Storer. — Cramp-finh; Torpedo; Numb-fish. First dorsal more than twice as large as second, placed over the ven- trals; spiracles not fringed, their edges smooth; color almost uniform black, with obscure darker spots ; beneath white ; length 2 to 5 feet ; breadth £ of length, the disk very blunt or almost emarginate in front. Atlantic coast ; not very common. (Storer, Am. Journ. Sci. Arts, 45, p. 165; Storer, Fishes Mass. 247.) 47. T. caiifoi'llica. Ayres. — California Cramp-fixli. Dark grayish brown above, thickly spotted with black ; disk broad and rounded, forming more than half the entire length ; teeth small, very sharp. Coast of California. (Ayren.) (Ayres, Proc. Cal. Ac. Nat. Sci. 1854, TO.) > SUPER-FAMILY RAIOIDEA. (The Trite Rays.) FAMILY XX.— RAILED . (The Skates.) Rays with the disk broad, rhombic, more or less ypinous or rough ; tail stout, rather long, with a longitudinal fold 011 each side, the skin commonly rough with spines ; usually two dorsal tins and sometimes a caudal fin present on the tail; pectoral fins extending to the snout; ventrals large ; no serrated spine, on the tail ; no electric organs ; ovi- parous, the eggs being laid in large leathery egg-cases, four- angled, with two long tubular " horns " at each end. Genera 4 or more ; species 40, most of them belonging to the genus Raia. Skates of generally small size ; found in all seas. * Caudal fin rudimentary or absent; pectorals not confluent around the snout ; ven- trals deeply notched -. RAIA, 37. 37.— RAIA Linnajus, 1758. Rays. (Artedi — Liimaiiis, Syst. Nat. : type Raia clarata L.) This genus, as here understood, comprises all those Raiidw which have the pectoral fins not continued around the snout, the ventrals deeply notched, and the caudal fin little developed or wanting; tlie tail is very distinct from the disk, and is provided with two rayed dorsal fins ; the skin of the body is usually more or less spinous ; the dentition differs in the two sexes, and the male is usually provided with a differentiated patch of spines on each pectoral. Species numerous. 40 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. Our knowledge of the American species has been in a state of great <•.. illusion until very lately, tlie first careful comparison of the species having been made by Mr. Carman in 1874. On his excellent paper* the following account is based. (Raia or J\'«jriiiacea Mitcliill. — Common Skate; Litilr NA-rt/c; Tobacco-box. Form rhomboid, with all the angles rounded; spines largest on the anterior extensions of the pectorals, where they are close-set, strong, laterally compressed and hooked backwards; smaller ones are scattered over the head, above the spiracles, above and in front of the eyes, on the back, the median line of "which is comparatively smooth, without larger median series, except in the young. A triangular patch on the shoulder-girdle: inner posterior angles of the pectorals nearly smooth ; in the males near the exterior angles of the pectorals are t\vo rows of iai -e erectile hooks, pointing backwards. Females with groups of small .scale.s (iii each side of the vent ; teeth small, the middle ones sharp in the males; all blunt in the females; jaws much curved; each side of tail with a dermal fold; caudal tins rough, not separate to the base. Color li.ulit brown, with small round spots of dark brown; females larger than the males. L. 1 to L* feet (G firman.) The smallest and commonest of our skates; abundant on our coast, especially northward. l.'.nn ,,•;,,, I,-,, i Mill-hill, Am. .Imini. Sci. Arts, xi, 290, l-.Ti: Ra'm ii/lniitcrla Giinther, siii. 1C.-J: Caiman. 1. •-. 17(1. i Bowa ..r i.-rii, gg i^ t,. ; l?>. 1C. <»< 4-M:il;i Mih -bill. — n,-nl not always) a large white on -II n.s. with a dark spot in t he cent re and a darker border; two smaller .similar .spots often present ((inrnnui). Six.e very much larger than the ' (in i In Skated i l,':ij:i-i i.r tin- KaM.-ni Coasts of tin- United States : Uy S. W. (iai- nian. ProC. I'-.-i. BOC. Nat. Hist. xvii. Nnv. t, 1~71. pp. 170-181. 20. RAIID^E RAIA. 41 preceding species, reaching a length of nearly three feet. The egg- cases are more than twice as large as those of the smaller species. (Mitchill, Trans. Lit. & Phil. Soc. i, 477, 1815: Raia diapliaves, pt. ; Storer, Fish. Mass. 240; Garman, 1. c. 177.) ** Outline of the disk anterior to the spiracles forming a more or less marked angle at the tip of the snout. \ Angle at tip of snout short and obtuse; rows of teeth ^§; body and tail with large bucklers. 50. R. ra.dia.ta. Donovan. — Starry Ray. In addition to the spines on the pectorals, head, back, and tail common to the preceding species, this species is marked by the presence of large spinous plates or bucklers. These are large strong spines, with broad stellate or shield-like bases. They are arranged as follows : One or two in front of each eye ; one on each side between the eye and the spiracle ; a pair on the shoulder, the smaller in front ; and fourteen or more forming a dorsal row, beginning just back of the head and extend- ing to the caudal. -An irregular row of spines on each side of the tail, separated from the membrane by a band of shagreen ; males with two or more rows of claw-like spines on the pectorals. Teeth with a long sharp point, rising from the middle and hooking backwards in the male, bluntish in the female; females larger than the males and more spinous. (Garman}. Size medium. L. 1£ to 2 feet. North Atlantic; found both in America and Europe. (Raia radiata Donovan, Hist. Brit. Fish, v, pi. 114, 1820; Giinther, viii, 460; Gar- man, 1. c. 177: Raia americana DeKay, 260.) ft Angle at tip of snout acute, moderately produced ; rows of teeth ££. 51. R. eglanteria Lace"pede. — Brier Ray. Prickles comparatively small and very sharp, most numerous on the anterior portion of the pectoral, over the head, on the snout, on the middle of the back, and on the tail between the rows of larger ones ; enlarged spines present around the eyes and spiracles, on the middle of the snout, in a median row along the back, and in two rows along each side of the tail ; these spines very sharp, larger and smaller ones alter- nating in the rows ; a large spine in the middle of each shoulder; a spine between the caudal fins. Color brown, with bauds, bars, lines, blotches, and spots of darker in the middle of the pectoral ; a translu- 42 CONTKIIU'TIONS TO NORTH AMERICAN ICTHYOLOGY — IV. • •mi space on cadi side of the rostrum. (Garman.) L. about 2 feet. Atlantic coasts of the I'nited States; not very common. (nut, i ,;/lanli'i-i(i HIISI-. MSS; Lan-pi-dr. Hist. Nat. lies Poiss. ii, 103: Raid desmarestia I.. ^uiMir. .Jouru. A'-. Nat. Si-i. iv. 100: Kaia clnniteiiay Lo Sueur, 1. c. 103: Garman, 1. o. i: . Vii^lr at tip lit' .-mint iinirli produced, blunt; rows of teeth ;J-f. 5*2. if. J;r\ is Mitehill. — Hurndovr Anglos (if the disk more acute than in any of the others; muzzle miicli produced, somewhat shovel-shaped at tip. Spines of the body very few and small. Some present above the eyes and spiracles, on the snout, aloim the anterior border of the pectorals, and on the back; those on the liaek very small. A median dorsal row of larger hooked spines extending along the median li'ie of the posterior portion of the back and the tail. Usually two lateral rows on the tail. Female rougher, as u.Mial among rays. Color variable, brownish, with paler spots, which are usually ringed with darker. The largest of our Atlantic species, reaching a length of about four feet. Virginia northward ; not uncom- mon. (Mitdiill. Amer. Monthly Ma-;. ii, :W7, 1817; Storer, Hist, Fish. Mass. 1867, 242 ; i .;ii man. I. 0. 1 •-'<>. ) "»:f. K. uraiiiilata Cill. •• A remarkable species, with the back and ventral surface covered witli minute sharp granular ossifications, obtained by Capt. Joseph W. Collins on Le Have Hank. A species of the same type as R.lcevis, and having •'!<> to ;;i teeth on each side; the back granulated and slate colored: the \entrals distinguished by reticulate markings, and the claspers slender and scarcely expanded." (Gill.) M>.: Q ..... le A Bean, Hull. Esses lust, xi, 187'J, 2f.) -. — / 'tic (fie /SI. It. < o<»|M'i i i;ir:ml. —Hi;/ l>i>k liroad. its widest ]iart liehind the middle. Snout long, regularly Ion- acuminate, but not very sharp at tip, the anterior outline of the pectoral not much undulated, and little concave. Interorbital space \ei\ liroad. almo.st Mat . slight ly depressed in the middle. Supraocuhir rid-c scarcely elevated. I'lyes small, shorter than the spiracles. Spines on liod\ small and few. 'I'wo oi' three small spines around the eye. One or two near the centre of the hack. Otherwise none on median line of back, in front of Imsr <>/' r, n/rnlx. \\here a series of spines begins, feeble 20. RAIID^E EAIA. 43 anteriorly, but growing larger backward. Females (as in other species) with lateral series of spines on the tail. Upper surface mostly covered with minute prickles, which are largest on the median line of the back, on the tail, and the front of the pectorals. Disk smooth below, except anteriorly. Teeth about ff, the jaws rather strongly arched. Disk one-fifth broader than long, its width twice the length of the tail. Snout 3£ in length of disk, 2| interorbital width. Color brown, with a. dark ring at base of pectorals. Upper surface everywhere with round pale spots. The largest of our skates, reaching a length of over six feet. The egg-case nearly a foot long. Abundant on the Pacific coast from Monterey to Sitka. (Girard, U. S. Pac. R. R. Exp. Fish. 372; Jordan & Gilbert, Proc. U. S. Nat. Mus- 1880,135.) 55. R. rhiiia Jor. & Gilb. Disk broad, the outer pectoral angle sharp, farther forward than in R. cooperi. Anterior outline of pectoral somewhat undulated and ex- ceedingly concave, so that the snout is very long, acuminate, and taper- ing to the extreme point. Interorbital space quite narrowr, little con- cave. Supraocular ridges slightly elevated. Eyes large, much longer than spiracles. Spines on body comparatively strong; five to seven above the eyes ; two or three near the middle of the back ; none on the median line of the back until opposite the posterior end of ventrals, where a series of rather sharp spines begins. Prickles on body above rather large, sharp, strongly stellate; those on the snout largest and most stellate. Skin above everywhere prickly in the female ; the prickles small and sparse on the base and edges of the pectorals and on ventrals ; larger on the median region of the disk. Male with bases of fins smooth, and the prickles generally fewer and smaller; anterior edge of pectoral with spines. Under side of disk almost everywhere prickly in the females, smooth posteriorly in the males. Mouth some- what arched. Teeth |£. Color light brown, nearly plain, with a dark ring at base of pectorals, which grows obscure with age. Disk one- tenth broader than long, its breadth twice the length of the tail. Snout nearly one-third the length of the disk, 3f times the iuterorbital width. L. 2£ feet. Monterey to Puget's Sound ; not rare. ( Jordan & Gilbert, Proc. U. S.Nat.Mus. 1880, — .) 56. R. bimoctllafa Girard. — Common Skate (of California;. Disk broad, its widest part well forward ; outer angle of pectoral blunt ; posterior edge convex ; anterior margin of pectoral undulated, not 44 CMN | i;]|;r I'l.iNS 10 MiKTII AMF.KICAN ICHTHYOLOGY - IV. concave; siimit Hither pointed :mody small and few. A small hand of sparse prickles near the median line of hack on each side of the median series of : spine-. Snout and interorbital space prickly. Xo prickles on the si ..... Met- or on the lins. except the anterior edge of the pectorals. Be- lo\\ -month, except the snout and front of pectorals. Teeth -*-§. Jaws someuliat curved. Color light hrown, slightly mottled; a blackish ring at base of pectorals. which becomes faint in the adult. A small dusk\ -pot at base of vent nils and on posterior edge of pectorals. Disk one tenth broader than long, its hreadth twice the length of the tail. Snout one-fourth the length of. the disk, three times the interorhital width. L. - feet. Coast of California, from Monterey to Cape Mendocino; abundant <.ir:ml. I'm,. A<-. Nai. s<-i. 1'liila. 1<~.~>4, 1% : I'mptcm Ininx-ulaia Girard. U. S. Par. i;. i;. BxpL n-h.--. ::?:;: (iiimii.-r. \iii. n;i. . \ ii. iiirrniis .l»nlan A <;ill>rrt i\ar. nov.). hitler- iii the -mall numlier and feebleness of the spines and prickles, and in the pre-ence of a liaixl of small prickles- (in the females) on the Mi- part of i he jieelorals, ]»arallel with the edge. Supraocular •- almo.-t obsolete. T\\ o or three minute prickles often present at the -houlder. A series Of minute Stellate prickles beginning near the middle of the back, becoming hooked .-pines on the tail. Lateral caudal »pi: iirel\ dnleieiitialed. A band of small prickles on posterior part of the back. Male- almost -mooth. Santa Barbara, Cal. 57. 1C. si< ||ul:ir:i I i > i > A i.ii1., 11 l>i^k i ..... 'h liroadei than long, anteriorly bioadlx arched; the snout \er\ ..l.iu-e. but its lip sli-htl\ ex-eiied and aeutish; anterior margin ol pecioial- -omeuhal uiidiilaled and conxex: jiosterior margin ver\ con\cx. A ro\s of -tout -upi aocidar spines; about six spines on the -ca|.ular legion, and a median io\\ of strong spine.- on the tail. Entire ujiper .-nilace rough witli -Irong slellate prickles; these largest on 21. TRYGONID^l. 45 head, middle of back, and on tail. Under side smooth, except ante- riorly. Teeth §§-. Color brown, everywhere strongly variegated with light and dark colors ; a black spot at base of each pectoral, surrounded by a pale ring, and this by a black ring 5 numerous black spots of various sizes, some of them ocellated, scattered over the body ; head with black cross-bars. Disk one-fifth broader than long ; the length of tail more than half the width of disk ; the snout 4£ in length of disk, and 2£ times the inter- orbital width ; the snout is as long as in binoculata, but much wider, appearing blunt and short. L. 2-£ feet. Bay of Monterey, California ; locally abundant. (Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 133.) FAMILY XXI.— TRYGONID^. (The Sting Eays.) Disk usually more or less broader than long ; the pectoral fins uninter- ruptedly confluent in front, forming the tip of the snout ; tail variously formed, usually whip-like, sometimes short and stout, sometimes bearing a single dorsal or caudal fin, but never with two dorsals. Usually one or more vertical folds of skin on the tail, rarely a lateral fold. Tail generally armed with a large, sharp, retrorsely serrate spine on its upper surface, toward the base (two or three spines occasionally present). Ventral fins not ernarginate. Skin smooth or variously prickly or spiuous, rough- est on the adult. No differentiated spines on the pectorals in the males, the sexes being similar. Mouth rather small,. Teeth small, paved, usu- ally more or less pointed or tubercular. Nostrils near together ; nasal valves forming a rectangular flap, which is joined to the upper jaw by a narrow frenum. Spiracles large, placed close behind the eyes. Skull not elevated, the eyes and spiracles superior. Ovo viviparous. Genera about 10 ; species 50. Found in most warm seas, some of them in the fresh waters of Central and South America. The large spine on the muscular tail is capable of inflicting a severe and even dangerous wound. (Tnjyonidw Giiuther, viii, 471-488.) * Tail stout, provided with a rayed caudal tin UROLOPHDS,* 38. ** Tail slender, -without caudal flu. t Tail very short, shorter than the broad disk PTEROPLATEA, 39. ti Tail whip-like, longer than the disk - - - DASYATIS, 40 * In the key to the families of Raim, on page 36, the character assigned to Trygonida, "Tail very slender, whip-like, its fius, if any, small and near its base," does not apply to the genus Urolophus, and should be modified. All the " Pachynra" have two dor- sals and a trace at least of a caudal tin. In the « Masticura" one or more of these fins are obsolete, and a serrated caudal spine is generally present. 46 CONTKIIH'TIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. :JW.-ITKOL,OPIIUS Mi!ller& Hcnle. Round Winy Rays. it IIcnlc. ri;i-in>!(ini.'ii. l~-:'.7, 1?:'.: type rrolojiliiix iturantidcun Miiller & Henle -= Ilnin fi-iti-inlii L;icc"pc.) Disk oval or rhombic, the length and breadth not very unequal. Snout rounded or slightly prominent. Skin smooth or somewhat prickly. Tail rather short, little it' any longer than the disk, muscular, provided with a distinct rayed caudal tin ; no dorsal liu. Upper part of the tail with a strong serrated spine. Warm seas. Size small. (»'*». I', liallcri Cooper. Disk nearly round, a little broader than long, with the anterior mar- gins straightish, meeting in a slight angle. Snout (from the eyes) longer than the width of the interorbital space. Tail somewhat shorter than the disk. Skin without spines or prickles. ( 'olor light -brownish, with inarblings and wavy lines of yellowish and dusky, sometimes with yellowish spots, occasionally with wide, obscure dusky streaks, which are crossed by similar transverse streaks. Belly yellowish tinged. <'oast of California, from Point Concepcion southward: exceedingly abundant in sheltered bays. L. 112. The smallest of our sting rays. Closely related to the Australian U. crticiatttK, if not identical with it. ( ooi.rr. I'n.r. C.'ilil'. Ac. \:it. Sci. iii. '.».").) 39.— PTEBOPJLATEA Miill.i A M.-nl.-. (MiillrrA llciili-. I'la^i-.-ionii n. |-:',7, If.-: I ypr 7,V/n/ «/hm /i/ I,.) DNX much broader than long, its anterior margins meeting in a very obi use niiglr. its outer angles more or less acute. Tail very short and vleml T. >horter tlian the disk, without iin, usually armed with a small . .iied >|iine. Skin smooth or very nearly so. Si/.e moderate or rather l-il~e. \\arm--ea-. (--;••/, tins ; ~/.ar~>t, broad ; r:r;pn-/.ar: :-/. ail ancient name of /'. ulhinlu.) 'Spii .U !•• \\ it lioiil ti-iil;ic|i-. '»'.*. I*. Iliarllll-a (Le Saeur) Miilli-r A ll.-nlc. — Huttrrjlii Disk aoarcelj i \\ice as lu-oad as Long, covered with perfectly smooth skin. Tail about one tliird as long as the disk, with a very slight der- '"•'I '"Id abo\ e ami below. Snout a little projecting, so that the anterior '' o| each pedoral i^ > ....... what coiicav<-. Color brownish olive, liiielx mail.led witli -i a\ i^li. an-, shaggy or rough; /SSrt'c, a skate; hence properly 2)asybatis.} * Upper caudal fold obsolete; lower well developed. (Jlcntilri/f/on Miiller & Henle.) <> I . I). ccBBt rums (Mitchill) Jordan & Gilbert. — Common 8li;i;/ Ray ; Clam Cracker; Stingaree. Disk a little broader than long, its anterior angle obtuse. Tail rel- atively stout, about one-third longer than the disk. A well-developed fold below, but the upper fold reduced to a mere trace. Disk perfectly smooth in the young, with more or less of tubercles along the median line of the back and the scapular region in the adult. Buccal papillae 3. Width of mouth about half its distance from the tip of the snout. 48 CONTRIBUTIONS TO NORTII AMKKICAN ICHTHYOLOGY - IV. Caudal .-pine U times width of month. Spiracles very large. Color nearly uniform Itrownish. L. s feet. < 'ape Cod to Florida; common. (Perhaps includes in.nv than one species.) i;.ii,i <•• iitriira Milrhill, Trail*. Lit. A; 1'lnl. Sue. \. V. i, 17'.' : {'axlinm-a haxlata !>••- k.i\. N'i-w V.n-U Fauna, Fi-di.-. 373: '/'/•//» linxlulit ( Jiinl ln-r. \iii, -I7C.. I'pprr and lowi-r caudal 1-dds \vcll dt-vrl.ipi-d. <>*.£. I>. sayi i I--- Snrnr'HMM'd. A 15ran. Disk rhomboidal, a little broader than long, the mu/zle moderately prominent. Width of mouth contained about lU times in the length of the snout. Tail with two well-developed folds, the lower fold consider- ably the larger, both smaller than in I), diptcnirns. Tail slender, Iiriekly. nearly twice as long as the disk: its s])ine extremely long; its length I'A times the width of the mouth. Skin smooth in the young, becoming ronghish with age. Several rather strong recurved spines along the middle line of the back. Spiracles moderate. Buccal papilhe 5 (7). Color brownish. South Atlantic States to Hra/.il. l.'njii suit \.<- Siiriir, .louni. Ac-. Xal. Sri. 1'liila. 1~17. I'J : Tryyon xaiji Diuuc'ril, Kla>iin)lir:iiirli. r.ii:!: Tri^nii jinxliintcii part < Jiint ln-r, viii. -17- <>:t. I), diplci-iiriis .Ionian A (iillx-it. Di>k rhomboid, slightly broader than long, anterior margins nearly straight, meeting anteriorly in a very obtuse angle: posterior margins curved: lateral angles rounded; tail nearly halt' longer than the disk, \\ith a conspicuous cutaneous fold below and a smaller but evident one above : jaws considerably arched ; biiccal papilla-. 'I; teeth H!. Young perfectly smooth. Adult with a row of low but rather stout tubercles on the median line of the scapular region and two others on the humeral iv-ion. Tail \\ith small prickles. ( 'audal spine long, its length nearly .". limes the \\idth uf the mouth. Color bluish brown, nearly plain. L. (i feet ..r more. I'.ayofSan Die-o, California : abundant. •'/''"•»»•»-.• .li.i-dan A (iill.rrt. I'm,-. I . S. Nat. Mus. |--<>. :;!.' «i I. l>. liihri c iihiliiv i l.ar, -p. . (,,„„!, A 1',,-an. Di>k rhomboidal. a little broader than long: anterior borders scarcely ooncave, ihe posterior almost >traiuht: external angles rounded ; mux- /le pointed: tail below with a cutaneous fold, hi-he1' and longer than the upper fold, OOVered lor its posterior tuo thirds with small ossilica- tioiis; tail nearl\ I'.1, limes leiiuth of disk. All the middle of the upper -ni hoe 'd i he bods . from the posterior re-ion of the liead to the base 22. MYLIOBATIDJE. 49 of tlie tail, covered by an armature composed of a very great number of small bony tubercles. Along the median line an irregular series of tubercles with the base enlarged, almost quadrilateral, the points directed backward ; a tubercle on the shoulder girdle on each side of the median line. Five papillae in the mouth. Jaws strongly arched. Very young, almost smooth. Uniform brown. (DumeriL} Florida to Brazil. (Raia tuberculata Lacdpede, Hist. Poiss. ii, 103 : Trygon tiiberculata Dumdril, Elasrno- braucb. 605: Trygon tiiberculata Giiatbcr, viii, 460.) 65. D. saSjinaus (Le Sueur) Goodo & Bean. Disk oval-rhomboidal, scarcely longer than broad, the anterior bor- ders lightly concave, united by rounded angles to the posterior borders, which are longer and a little convex; snout projecting; tail twice as long as the body; upper part of the head rough with small spines; on the middle of the back a row of tubercles commencing behind the head and prolonged on the base of the tail ; 5 buccal papilla? ; two spines on each side of the shoulder girdle ; tail rough, with two short, low cutane- ous folds; mouth strongly arched. Color uniform yellowish brown. (DumeriL} " Distinguished from D. centrums by the shape of the disk, the shape of the caudal spine, and the wing-like membranes on the tail" (Goode in lit.). Perhaps '.deutical with the preceding. (Trygon sabina Le Sueur, Joum. Ac. Nat. Sci. Pbila. 1824, iv, 109: Trygon sabina Duiudril, Hist. Nat. Poiss. i, 607: Trygon tuberculata Guntber, viii, 480, part.) FAMILY XXIL— MYLIOBATIDJE. (The Eagle Rays.) Disk broad; the pectoral fins not continued to the end of the snout, but ceasing on the sides of the head and reappearing in front of the snout as one or two fleshy protuberances (cephalic fins), which are sup- ported by fin rays. Tail very long and slender, whip-like, with a single dorsal fin near its root, behind which is usually a strong, retrorsely serrated spine. Nasal valves forming a rectangular Hap, with the pos- terior margin free, attached by a frenuni to the upper jaw. Skull less depressed than usual among rays, its surface raised so that the eyes and spiracles are lateral in position. Teeth hexangular, large, flat, tessel- lated, the middle ones usually broader than the others. Ovoviviparous. No differentiated spines on the pectorals in the males, the sexes being- similar. Yentrals not emarginate. Genera 3 ; species about 20. Large Bull. Nat. Mus. No. 16 4 :>o ..\TKir.rrmNs TO NORTH AMERICAN ICHTHYOLOGY — iv. rays; inhabiting warm seas. Similar in habits to the Trygonidcu. (Group Myliiilititinti (.Jiiutlier, viii, 483-495.) • Muzzle L l>rM;id. the outer angles acute ; cephalic, lins forming a soft con- vex appenda-e in iron I ot Hie snout : ja\\s about e<|iial ; median teetli \er\ ln-M.id. mncli broader th in long in the adult, proporl ionally nar- rower in tin- \oiiii-; se\-eral series of narrower teeth on each side of the median sei ii , , , , d _..• of (he nasal valve not deeply emar.uinate. Tail \er\ lo;iu ;iinl slender, \\ilh a small dorsal tin and one or more ser- ralcd -pines. Skm smool h or nearly so. ^i/.e large. In all warm seas. . •• -i ind.-i ; . 22. MYLIOBATID,E — RHINOPTERA. * 51 67. M. fa'cmaBBviiBIei Le Sueur. Disk broader than long, the breadth equal to the length of the tail. Skin entirely smooth. A blunt, whitish prominence over each eye. Muzzle prominent. Teeth of the main row 4 to G times broader than long ; small teeth in three rows. Eeddish brown. Tail nearly black. Cape Cod to Brazil ; not uncommon. (Le Sneur, Journ. Ac. Nat. Sci. Phila. iv, 111 : Myliobatis Uspinosus Dume"ril, Hist. Nat. Poiss. 637: Myliobatis acnta Storer, Hist. Fish. Mass. 2-15.) 68. M. caIif©B*BBiNs TO NUKTII A.MKRICAN ICHTHYOLOGY — iv. * FAMILY XXI II.— UKPIIALOPTERIDJE. (Tin- Xrtl Mr/V.v.) - nf enormous si/.r, with tin1 disk broader tlian long and the pec- toral tins not continued on the sidcsof the head, the anterior or cephalic poni.ni developed as two Ion-' ear-like appendages. Mouth wide, ter- minal or inferior. Teeth very small, llat or tubercular, in many series. those of the upper jaw sometimes wanting. Eyes Literal. Nostrils widely separated, their valves united, forming a Hap as wide as the cleft of the mouth. Tail long and slender, whip-like, with a single dorsal iin at its base, and with or without a serrated spine. Ventral fins not cmarginatc. Skin more or less rough. Males without differentiated spines on the pectorals, the sexes similar. Ovoviviparous. General'; species about 7. Largest of all rays and among the largest of all fishes. Found in the tropical seas. i \liilinhiitiiln; '^roiip H. <'rriiti>i>tr>-iiia Giintlirr, viii. I'.'.'* 1'.'-. ) ili in lower ja\v only : mouth tcnnimil .............................. MAXTA. 44. 44.— UIANTA U:mi-roft. (<'rrlh'il»jili rn mantn Bancroft = T!ni,i Iris \V;ill<;mill.) I>i-k broader than long, its exterior angles acute, the posterior mar- gins of the p.-ctorals concave. Head truncate in front; the cephalic. I'm- Ion-', turned forward and inward. Month large, terminal. Teeth minute, pre-ent in lower jaw only. Tail whip-like, often (always?) with- out serrated .-pine. Skin rough, with small tubercles. Two species known. iMaid to devour after enveloping them in its ' 7O. H. hirosli-is Wnlliinini) .l..nl;in A Cillin i . Sea Devil; I >• >-i! l-'i^i : Mania. Di-lv no) .piite twice aa broad as long. Tail about as long as the disk. T--''ih in al ..... t KM) longitudinal series, which are separated by distinct inteix|,:ir, Skin of body and tail everywhere covered with small Mate tubercle,, rendering the surface very rough. Brownish, the 24. CIIBLERIDyE. 53 margins of the disk darker. (Dumeril.) Tropical waters of A.nierica; north to North Carolina and San Diego. Keaches a width of about 20 feet. ("Raia lirostris Walbaum " : Cephaloptmt vampyrus Mitchill, Ann. Lye. Nat. Hist. N. Y. 1823, 23: Diabolichthys eUiotli Holmes, Proc. Elliott Soc.Nat. Hist. 1856, 39: Ceratop- tera vampyrus Duin6ril, Hist. Nat. Poiss. i, 6GO : Cerutoptera vampyrus Giintlier, viii, 498.) SUBCLASS HOLOCEPHALI. (The Chimceras.) The characters of the single order. ORDER F.-HOLOCEPHALL (The Chimceras.} Skeleton cartilaginous. Gill-cavity with four clefts within, but having one external opening only, which is covered by a fold of skin, within which is a rudimentary cartilaginous operculuin. No spiracles. Mouth inferior. Jaws without separate teeth, but armed with bony plates. Intestines with a spiral valve. No air-bladder. Jaws and palate coalesceut with the skull. Derivative radii sessile on the sides of the basal bones of the limbs, separated from the articulation. Pectoral fins normally developed, placed low. Yentral fins abdominal. Tail taper- ing. Skin smooth or nearly so ; its muciferous system well developed. A single family. (Holocephala GUutber, viii, 348-352; o/lof, solid; Ketyafa], head.) FAMILY XXIV.— CHIM^RUX^E. (The Chimceras.) Body elongate, rather robust anteriorly, tapering posteriorly. Head compressed. Mouth inferior. Upper lip deeply notched. Nostrils confluent with the mouth, separated by a narrow isthmus. Jaws with the teeth confluent into four bony laminae above and two below. No spiracles. Males with a peculiar cartilaginous hook, armed with prickles at the tip, and turned forward on the upper part of the snout. Pectoral fins free, placed low. Ventral fins abdominal, many-rayed, provided in the male with claspers. Dorsal fin usually divided ; anteriorly with a very strong spine, which is grooved behind. Caudal fin low, fold-like- Skin naked, rarely somewhat prickly. Lateral line present, usually with numerous branches anteriorly. Three free gills and two half gills, O'MKli;; nON8 '•' NOKTH AMKKICAN ICHTHYOLOGY - IV. OIK« on cadi >ide. Isthmus moderate : -ill-rakers small. Oviparous, tin- egg-casea l«»:i^. elliptical. with silky filaments. Cenera '2 (Chlmivm ami CnHni-lti/Hclius)-, species about ."». Abounding in the seas of temper- ate ami cold iv-ion-. nut i-idtr t iiintli.T, viii, ::r.l-:;.V2.) mil ii-iiiiiii;iiiiiur iii .-i riit:inrt>usilui> ; tail toot bent up ward... CHUtBRA, 45. 15.— CIIIRIJERA Bat-fishes. s, Mu>. K.-is. Ail. Friil. !,•">:'>: Sy>i. Nat. : type Clilmnra itunixtrosa'L.) Head somewhat roiiipivssi-d, the, snout bluatish, protruding, llosliy, m>t armed at tip with an appendage. Eyes vi-ry large, lateral. Teeth lather strong. Lips thiekish, the lo\ver >vith a i'reiium. Lateral line simple mi the ltu.lv. but I'nrking- anteriorly, forming several series of mm-itiis tubes on the head. Male with a elub-s'iaped. cartilaginous hook mi the head, above the snout. This hook is euned forward aud down- ward, and is armed at its tip with deenrved spines. Its tip fits into a depression in front of the eyes. Gill-opening small. Pectorals mod- erate. Ventrals rather lar-e, with lar-e bilid ortrilid elaspers in the male. Male also with rou^h ai)pemla.ues at the l>aseot'the veiitrals. pnilriidin.L; from a sheath of skin. First dorsal triangular, jireeeded by a strong >pine which is grooved behind and serrated on its ed^es. Sec- ond dorsal ami caudal fins low, often more or less notched. Tail ex- tending in the line of the axis of the body, sometimes produced in a lilament. Skin smooth. Fishes of singular appearance ; mostly of the northern seas; m>t valued for food. (.Y{',M«f/>«, Chinurra,;\ fabulous mon- ster, \\ith the head of a lion, body of a ^oat, and tail of a serpent.) a. ClMfH i- in i IK- male tritiil. ( i '// 71. « . pliiniihca <:ill. "A c/inini ft \\ith the snout aciiiely produced; the ante-orbital flexure of the snborbilal line extending little above the level of the inferior mar-in i.f the orbit; the dorsals close together; the dorsal spine with anterior -arfaee rounded: theventrals t rian^ular and jtointed ; the pedoraN extfiidiii- to Hie outer axil of the ventrals; and the color uni- lornilv pliimbei.n-..". \(iill.) A tlant ie coast from Tape (Jod northward; in deep \\ater. ;!l, Pi-..,-. I'liil.,,. BOO. \V:i,lnn-l.iii, Hi-i •.-.'.'. 1-77.) pen in tin- m:il.- liil'nl. i IIiiilrnliii/iiN* (Jill.) •'•ili.p, . \ ' Pbila. 1862, 331 : type CftinuBra ool/tei. (v6up, water ; li.ir. ; I'nmi lln- liinii of lln- li[i-> and ti-rlh.) 24. CHIM^ERID^E CHIMERA. 55 72. C. COlSisei Beuuett. — Rat-fisli ; Elephant-fish. Body anteriorly stoutish, tapering into a slender tail, which is not produced in a filament. Pectorals about as long as head. Dorsal spine % the length of the head. Second dorsal low, highest in front, then very low, then higher, ending abruptly just before th^ beginning of the upper caudal fold. A small fold between first and second dorsal, free from both. Lower caudal fold higher than upper, neither quite reach- ing the tip of the tail. No distinct anal fin. Color grayish, with nu- merous round white spots. Both dorsals edged with blackish. L. 2 feet. Pacific coast, from Monterey northward ; very abundant. (Bennett, Beechey's Voy. Zool. 71; Dum6ril, Elasmobranches, 689; Giiuther, viii, 350.) ADDENDA TO ^TARSIPOBRANCHII, ELAS- MOBRANCHII, ETC. . — The first forty-one pages of the present work were printed in the spring of 1879, more than a year before work was resumed on the remaining part. Meanwhile numerous additions have been made to our list of sharks, which may be noticed here. A few errors may also be corrected. Page 2, last line: For " Eyngonopterus" read Epigoniclitliys'1' '. Page 3: For "B. caribcEum" read "1. E. lanceolatum (Pallas) Gray". The Laucelet occurs also on the coast of Southern California. Page 6: For "3. B. stouti Lockingtou." read: " 3. B. domEjeyi Miiller. " Plum-color or purplish, the edge of the lower fold ouly pale. Gills usually 12-11. Teeth 10 in each series. L. 20 inches. Snout 20 times in total length; head to first gill-opening 4^; branchial region 8 5 tail 8. Coast of California and southward ; not rare. Burrowing from, the gill-openings or the eyes into the flesh of large fishes, and soon leaving nothing except the head, skin, and skeleton. " (G-aslrobranche domley Lac. ; Miiller, Me"rn, de 1'Acad. Berlin, 1834, 80: Bdellostoma polytrema Grd.; etc.)" Page 7 : Lampetra (Entosplienus}* tridentatns and L. plumbea are per- haps geuerically distinct, as the lingual teeth in the former are pectinate and in the latter obscurely tricuspidate. The diagnosis of Lampetra should be modified accordingly. Page 8 : "5. L.epihexodon" and "6. L. astori" should be suppressed, as they are probably identical with E. tridentatus. Page 13: For " GINGLYMOSTOMATID^E " read " SCYLLIID^E"; and under "t" for "ventrals" read "pectoral". Page 15 : Somniosus microcephalus is abundant on the Pacific coast from Cape Flattery northward. Twelfth line from the bottom : For "pectorals" read "ventrals". Page 17: Instead of "Family VI.—Ginglymostomatidce", etc., read: * Gill, MSS. Proc. Ac. Nat. Sci. Pliila. 1862, 33, not characterized, (evrof, within ; cf tin- pectorals. Mouth usually broad, with small teeth, sev- eral series being in function. Teeth with a median cusp, and 1 to 4 .small ones on each side. Usually a distinct furrow at the angle of the mouth. Nostrils near the mouth, sometimes confluent with it, some- times provided with cirri. Oviparous. Coloration often variegated. Th< ;scs quadrate, with prehensile tubes at the angles.* Sharks of the warm seas. Ceiiera 8 or 9 ; species about 30. " (Scylli'Hl.i; Ciinther, viii, 400-414.) Nostrils confluent with the mouth ; caudal hent upwards, with hasal lobe, (fiin- "ti. Trrtli in Imlli jaws in maiiy scries, each willi a >i nuiLC median ensp, and one (ir two smaller cusps on each side ; nasal cirri present ..... GlNGLYMosn >M.Y, 13. " ** No>ti i!s not continent with the month; caudal not bent upwards. (.SC-'///IJH.) "fc. N'ostriK separated l>y an istlinins; no nasal cirri; tail not sorratcr;'< -'iHii'ln and Hettrodontido), oiii- sliai Us aii- all o\ o\ i\'i]iaroiis. t .rt. ••A small sliark resembling Mustcliis hinmtlHfi and If. Itcnlci, but differ- in- from the former in tin- dentition and in the attachment of the em- bryo tu the uterus by a placenta, and from the latter in the blunter teeth. Only those iii ihe posterior part of the upper ja\v have a basal cusp. and these usually but one only. This species is found on the coaM of Kurope and Africa, and is accredited to our Atlantic fauna by diinther (viii, 380). l/;/.x/i IH* Iii n'x Kisso, F.iiropr Mt'-ridioiiiilc, iii. 1'J? : MiixtdiiK hri-i* (Jiinllirr. viii, 335: /'/. urn' ronii/liiii ln-rix (Jill. 1'ruc. Ac. Nat. Sci. 1'hila. 1-d 1, 1 lv ; iiot of Jordan A: (iilliort, PrOO. I . 8. Nat. .Mils. 1880,52, —llltiitotridnx 1'aue i'l : (inlrnrrliinnx (/nlt'itx, the "Oil Shark", is very abundant on the coast of California, especially southward. Its teeth are coarsely serrated on the outer margin near the base only. Galcocerdo tlyrinus also ramies northward to San Dieft'O on the Pacific coast. Pa-es L'U : Carchl lotion and lihlnotria- In dd-clinrinnx placenta- are not developed, according to Aii.L;ii>te I>iimeril. Hist. Nat. des Poiss. i, -II.) Species numerous, (su. well ; -', Lamia or Lamna, a I'abidons monster, from /«£//<)-:, de\onring hunger.)" I'a-e L'L' : The species of •• Kiiltintni " should stand as: "26, /:. obscura iLeS.) Cill", "I'T. A1, inlllnrli (M. ^ It.) dill", and "27 (l>). /•:. lamia (Bisso) dill". Pa-e 23: I ndei- -/:. lamia" add: "•27 - . i:. lamia (B Gill. r.,nj sl,,i,-lc. •• l'.od\ inl.n-i, tlie Lack elevated. Head bioad and llat ; the snout 80 1.M M' Uii«i\\n to u->. tin- c-iiiln\im in nil uiir iivitviviparoMs sharks r\n-|it J.'nla- . and /t'liiimlr'ni' > - :n<- \villiuiil jilacrnla. ADDENDA TO MARSIFOBRANCHII, ELASMOBEANCHII, ETC. Gl long, but wide and rounded, its length from mouth greater than dis- tance between nostrils, wrhich are nearer snout than angle of the mouth. Eye moderate. Teeth f£, their form as in E. lamia, the upper regularly triangular, without notch, narrow in the young, the lower narrowly tri- angular, erect, on a broad base, all the teeth distinctly and evenly ser- rated. First dorsal beginning at a distance a little less than its own base behind the pectorals, and ending at a point a little more than its own base behind the ventrals. Height of first dorsal two-thirds the depth of the body ; pectoral reaching past first dorsal. Second dorsal very small, not one-sixth the height of the first, smaller than anal and nearly opposite it. Tail 3£ in length. Color plain light gray. Warm seas north to San Diego Bay. "Our specimens differ from descriptions of E. lamia in not having the first dorsal higher than the body, and inserted close behind the root of the pectorals. In E. obscura and E. milberti the upper teeth are deeply notched on the outer margin ". Page 24: After "Isogompliodon limbatus" add: "19 (&).— HYPOPRION Muller & Henle. " (Hypoprionodon Gill.) "(Muller & Henle, Plagiostomen, 1837,34: type Carcharias madoti Mutter & Henle.) "Characters essentially as in Eulamia,~bnt with the lower teeth entire, the upper teeth coarsely serrated at base only, on one or both sides ; lower teeth erect. (6/r<), below; xpiov, saw; the upper teeth being ser- rated at base.) "28. II. t>revia'©§tris Poey. "Snout obtuse ; teeth of the upper jaw with the base serrate on both sides $ pectoral fins moderate. Bluish, fins without black spots. (Poey.) West Indies ; occasional on our Gulf coast. "(Poey, Synopsis Pise. Cubeusium, 1868, 451: Carcliarias Irevirostris Giiuther, viii, 362.)" Pages 26, 29, 30, 31: Sphyrna zygccna, Lamna cornulica, Carcharodon rondeleti, CetorrMnus maximus, and a species of Isurus (probably I. oxyr- rhynchus) occur on the coast of California. Page 34 : For the key to genera substitute : "* Gill-openings six on eacL side HEXANCITUS, 31 (&.) '< * * Gill-openings seven on each side HEPTRANCHIAS, 32. [TBIBUTIONS TO v»;:Tii AMT.IMCAN ICHTHYOLOGY — iv. Cnvier.) '• Bafini ique, Caratteri «li Almni \n..vi Cem-ri, etc. I^IO, ll: type Squalits LilllKIMlS.) •• r.ranchial apertures gig on each side; otherwise essentially as in Hep- li-iinrli'nix. Two .xpecies knu\vi). (^, six ; «r/"?, bend or sinus; for gill- openin ••II (6), El. coriillis Jordan & Gilbert.— Shord-noscd Shark. ••Color almost black, nnspot led ; a grayish lateral streak. Ilcail lam--, broad. dcinvsscd and blunt. Xo median tooth in upper jaw. Aliont >i\ pointed treth in front of n]»per jaw, all entire and without i..i-al ensps. N«-\t three teeth with entire edges and a single cusp on tin- miter inaruiii. lleinaininy: teeth of upper jaw serrate on the inner mar-in, and with two or more basal cusps on the outer. Median cusp of I..U.T jaw vn\ small. Other teeth with six cusps, the first the largest, tin- othn> iv-ularly smaller, the inner edge in the adults ser- rated. Tail Ion-', t \\iee as long as head, a little less than one-third the total Icii-th. Scales on upper edge of tail enlarged. Monterey to Pu- grt's Sound. "(Ji.nlnn A- Cilhrrl. 1'mr. U. S. Nat. Mus. 1880, 352. ) •>:*2. IIEPTRANCIIIAS U:iiim-s.,ii.-. " (Xotorliynchus Ayrcs.) •• i;;iliii<^<|ii«', Cariitti-ri di Alcuiii Xuovi Cifiicri, etc. 1810, 13: typo Squalus cincrcns ( init'lin.) II opciiin.Li> -^' ''' n "M each side. Three species known. (tr-r«, seven ; . Us. The change of this name to " ncj>tan<-Jtun" is hardly justi- fiable.) "12. D9. c:i:irtil:D(ns -.-::inl. ray. \\ith some round black spots, larger than the pupil, r.iilin -IMIM-IV placed. Head rather depressed; the snout broad, rounded : the nostrils near its tip ; spiracles large, nearer the gill-opon- than iln- eye : a Ion- furrow at the an-le of the month. "No median "I n in hit IMC nClc-n lT(|llin' tlh' Ml 1 i.st i t 111 inll i'«.r 111!' ll.'linr nf tin- tNjiirnl j:i-iiii- nl' a lainily <>r MHIIC li -.>-•> familiar l>ut earlier name, as Ifrxunchus • r Oiinntus^in, iinfii/imiiin for Tri/i/oii, i-tc. It is probably un- • i-lian-i- \\ i II -Kijn\\ n t'atnily IIJIIIH-S In an-onl \\ iili these ehan^es. Among niir liarl.s it i^ iierh:i|i- In ltd I., n-iain tin- nlil 1'aniily names nilnnlnnpidiili'; .\<>!itlani- ••ntiilil. in^le.nl i.f t',ii-i -liiiriin'i: . II' .iiego P,a\ : abundant. Only young specimens known, but it is probably ovoviviparoiis and therefore not a h'uloul. "(I'ltitiirliiiKt exasperate .Ionian A: Gilbert, Pror. U. S. Xaf. Mns. 1880, 32: Zapteryx I. .i.l. in A. (.illin-t, Pror. U.S. Nat. Mu.s. 1880, M: Tryyonorliina i.ni^x rata (iariuaii. Hull. Mns. ( '(imp. Zonl. 1-n, 17(1.) •• I.» • . K. triseriatus Jordan & Gilbert. "Disk broad, ovate, broader than long. The snout very bluntly rounded, not projecting, the angle formed by the pectorals anteriorly very obi use ; anterior outline of the pectorals slightly convex, not undu- lated. Tail very stout, much, longer than the disk, its edges with, a broad fold, broader than in E. exaxpcrdiiis. Pectoral fins extending almost to the tip of the snout; rostral ridges wide apart, converging, inclosing a triangular area. Eyes small, wide apart, the broad spira- cles close behind them. Caudal flu well developed above and below. Dorsals similar, their posterior free margins very convex. Mouth broad, its width nearly equal to its distance from tip of snout, a deep cu -a.se passing around it behind, in front of which the lower lip has three folds of skin ; upper lip not developed, a fold of skin passing from the angle of the month on either side to the inner angle of the nostrils, thence .straight across, inclosing a depressed trapezoidal £Z\-shaped area, bound below by the curved outline of the upper .jaw. In this are three GTOSa lol.i.-, of >kin. Teeth ;.;;;. (.Jill-openings narrow*. Skin every- where, above and below, covered \\ it h line shagreen. I he pri civics coarser on the anterior outer margin of I he pectorals ( ^ ), where are two or three rou> i.i' retrorsc spines. Four strong spines on the tip of the snout, forming a rhombic figure; four or live spines around each eye. A long series of \n \ Miong spines along the median line of the back and tail, and a series of similar ones on each side of the tail ; a single strong spine «"' the outer edge of the* shoulder-girdle and two between this and the iMi-dian series. Color light olive brown, without distiucl markings. L. 2 •. Breadth of disk one-tenth more than its length; tail usually half longi-r than dM, ; MIOIII two-ninths of length of disk, not half longer than \\idih of inieroi bital are.i. Coast of California from Point Concep- t-ion southward: abundant. In spite of its resemblance to the limuid ADDENDA TO ilARSIPOBRANCIIII, ELASMOBRANCITir, ETC. 65 genus Platyn'liina, this species proves to be viviparous. It is, there- fore, referred to the Rliinobatidce, tlie oviparity of Raiidce being the only character distinguishing the two families. " (Plali/rhiiia, trlserlata Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 36.) "45 (d). It. ICBsJigiEiostas Garman. '; Grayish, with small paler spots, uniform below. , Outline similar to that of E.productns. Snout long and narrow, its ridges close together throughout. Eyes large, twice as large as spiracles. Interorbital space narrow, concave, as wide as nostrils or the interspace between them. Distance between outer angles of nostrils more than half the snout. Mouth straight, its width not quite twice the interorbital space. Dorsal and preocular spines very small ; 5 larger spines on tip of snout. Su- praocular and scapular spines obsolete. L. 22 inches. Width 3 in length ; tail about 2 ; snout to the mouth 5f . Coast of Florida. ( Garman.) "(Garman, Bull. Mus. Comp. Zool. 1880, 168.)" Page 47, genus Dasyatis : The following synopsis of the American species of the genus Dasyatis^ or better Dasibatls, has been prepared at our request by Mr. Samuel Garman, of the Museum of Comparative Zoology. It was received too late for insertion in the text. We, there- fore, place it here in the form in which it was written by its author : THE AMERICAN SPECIES OF THE GENUS DASIBATIS.* BY SAMUEL GARMAN. Tail more than twice the length of the disk, keeled on the top ; snout acute, pointed ; tail very long, round tiiberculata snout not prominent ; tail compressed longa round on the top, compressed, with lateral series of large tubercles; snout not prominent ; anterior margins slightly sinuous centrum snout prominent, with a series of long, narrow, depressed tubercles on the middle of the back lata Tail less than twice and more than one and a half times the length of the disk, with two expansions ; disk subcircular ; snout prominent '. . sdbina disk quadrangular ; snout not prominent sayi keeled on the top, with an expansion below ; with three series of tubercles on the shoulders liastata Tail less than one and a half times the length of the disk, with two expansions ; mouth with five papillae trevis mouth with three papillae dlpterura *Dasy~balus Walbaum, Kleinii Ichthyol. Enod. sive Index rerum, etc. 1793, 35 : type Eajapastinaca L. This use of the name has precedence of "Dasyatis" Kaf. Bull. Nat. Mus. No. 16 5 CG coNTKii.rnoNS TO NORTH AMERICAN ICHTHYOLOGY — iv. DVSIHATIS TUBERCULATA. /.. ' I .l"i-p. ii. ]). Idll. pi. .J, f|Ur. 1. :!,itn >ii:i\v. Ceil. /diil. V. pi. '.'. ]i. M'.HI, ]il. I'JT. 'irijijtui itfni'iinrii Miill. Knnim's K'IMM- nni . T.-ir. 1 I. Ufa I iiiiiH-ril, KhisMinlir. p. . •ea; in- a long serrated spine. A row of elongated tubercles on i he dorsnm and anterior portion of tail and one or more smaller ones on each shoulder. The posterior tubercles of the median ro\v are so much elongated as to resemble the spine. Month much undulated, with three papilla-. Teeth small, unequal. Color yellowish to olivaceous brown, darkening with toge. The young are without scales or tubercles. As the animal grows older and the tubercles appear a lew scattered asperi- ties appear on the head ; still later these increase in number and si/.e to Mich an extent as to cover the head and dorsnm with a heavy coat of mail made up of the closely-set llatteiied scales. The tubercles of the back cease growing as the scales enlarge, and ultimately there is little distinction between them. Usually the tubercle on the middle of the pectoral arch is larger; those on the tail continue to increase in size with age. A young female measures in length of body 9.9, length of tail L'S.-J, and width of disk 11.0 inches. Canna\ ieiias, Surinam, Para, Uahia, and K'io Janeiro. DASIMATIS LO.NCA. IM.-III, 1--H, Hull. MM-;. rump. /,•;;]. vi, p. ITU.) Di-k quadrangular, about one-sixth wider than long. Margins nearly Mrai-lii, anterior meeting in a blunt angle on the end of ihe snout. Outer angles rounded, posterior blunt. Yentrals rounded. Tail more than l\\ice as l.uig as the body, roughened with small asperities, de- p:« - -d anteriorly, compressed behind the spine, keeled above the com- proscd portion, with a long, narrow cutaneous expansion on the. lower side. Mouth curved v, ith live papilla-. A row of small tubercles behind the head on the shoulder grdle. It is likely that larger specimens are •viilcil with tubercles on back and tail. ADDENDA TO SlARSIPOBRANCIIII, ELASMOBRANCHII, ETC. 67 Distinguished from D. lata by the shape of the snout and disk and the keel on the tail, and from D. centrum by the straight margins of the pectorals and the keel. One specimen secured at Acapulco, Mexico, by Prof. Alexander Agassiz. One light- colored, reddish-brown specimen from Panama by the Hassler Expedition. Length of body 11.5, tail 28, and width of pectorals 13.8 inches. Length of body of second specimen, 9.3, tail 24.5, and width of pectorals 11.2 inches. DASIBATIS CENTRURA. Kaja centrum Witch. Trans. Lit. & Phil. Soc. N. Y. i, p. 479. Tryyon centrum Liusley, Silliiuau's Am. Jour. Sci. & Arts, 47, 1814, p. KJG. Tryyon centrum Gill (name only), Cat. Fish. E. Coast N. Amer. p. 34. Disk quadrangular, about one-fourth wider than long. Anterior mar- gins sinuous, concave opposite the eyes, convex toward the slightly pro- tuberant snout and rounded outer angles ; posterior straighter, a very little convex ; inner convex. Hinder angles blunt. Ventrals truncate, with rounded angles. Tail more than twice as long as the body, much compressed, rounded above, with keel and cutaneous expansion below, with one or more strong serrated spines at the termination of the ante- rior fifth of its length, rough on all sides with spines or tubercles. Till half grown the young are naked; as they approach maturity broad stellate-based, conical-pointed, irregularly-placed bucklers appear on the middle of the hinder part of the back and on the top and sides of the tail. Very large examples have the central portion of the back closely mailed with small flattened tubercles. The bucklers bear more resemblance to those of the Rajcej radiata and cla-vata than to the tubercles ofpastinaca, Imstata, or tuberculata. Mouth arched forward, with five papillae. Teeth in quincunx, blunt, smooth. Color of back and tail olive brown ; light to white below. From pastinaca, which this species resembles in shape, it is distinguished by the tubercles, by the length and compression of the tail, and absence of all trace of keel or expansion on its upper side. A young specimen measures from snout to tail 13.8, length of tail 30.5, and width of pectorals 17.5 inches. The largest specimen in the collec- tion has a total length of 10 feet 3 inches. Common south of Cape Cod. Occasionally found northward. DASTBATIS LATA. * (Carman, 1880, Ball. Mus. Comp. Zool. vi, p. 170.) Disk quadrangular, one-fourth wider than long. Anterior margins nearly straight, forming a very blunt angle at the snout, rounded near G8 coxTi;ir.rn<».\s' TO NORTH AMERICAN ICHTHYOLOGY — iv. • the miter extremities : posterior convex ; inner straight a portion of their length. Vent nils truncate, rounded. Snout produced, forming ;i i.ninded |»i-oininenee in front of the margins of the disk. Length from the forehead !<•-< than the width of the head. A line joining the wider portions Of the disk passes nearer to the head than to the shoulders. Tail more than twice us long- as the body, without a trace of keel above; a Ion-' narrow expansion below has its origin opposite that of the spine, and terminates in a keel which continues to the extremity, roughened with small tubercles, with an irregular series of broad-based conical tubereles on each side. A pair of large, compressed, erect tubercles stands immediately in front of the caudal spine, and a similar one is placed over the middle of the pelvic arch. These suggest a continuous >eries in larger specimens. Three larger elongated tubercles, with points directed backward, similar to those of I>. luitiala, occupy the mid- dleof the shoulder girdle. ^loutli curved, six (.1-6 1} papilla? at the bot- tom behind the teeth; two of these are in the middle in front, where usually there is but one. Color light olive, probably greenish in life, white below. .Distinguished from D. centrum by the prominent snout, the shape of the tubercles in the middle of the back, and the narrowness of the posterior portion of the disk. Length of body 1(5, tail 35.3, and width of pectorals iMt.,") inches. Sent from the Sandwich Islands by Andrew (iarrett. DAS in AT is SABIXA. tabina I.i'Mirur. .Jmiv. Ac.-nl. X.it. Sri. I'lul. iv, p. I"*.'. Tni'/nii .s. I'.i'nui Miill. ct l[r;ili'. I'l.-iuinstoilirli, p. \(\'.\. • li'inii 1 >iiiiii;ril, Kl;isiiiol»;uu-li. p. (ill?. |)i-k -iibcircular. Snout produced, blunt. Anterior margins of the pectorals concave near the snout, becoming convex toward the broadly rounded outer extremities ; hinder and inner margins convex, rpper jaw \\ith a deep indentation, receiving a corresponding prominence on the lower. Teeth ;it t he sides of t his indentation much larger, resem- bling the molars of Ili-lci-ndunlns. Mouth with live papilhe. Tail less than t wiee ;is lung us the disk, tapering to a line point, rough \\ ith small piiekles .ximilar to those scattered over the head and back, a cutaneous ..insioii abo\c. mid a liroader, longei- one below. These end nearly opposite riich oth.-i. the h.wer extends forward under the spine. AVith a median row ol' tubercles on the dorsum and one or a pair on each >houlder. Distinguished from tnhirciiltitn by the shape of the snout, the p.ctor.ils, the shorter tail, the larger teeth, the greater curva- ADDENDA TO MARSIPOBEANCHII, ELASMOBRANCHII, ETC. 69 tare of jaws, the smaller size, and the two cutaneous expansions. Of twenty specimens the average proportional length of body and tail is as four and a half to eight. In no case is the tail twice as long as the disk. Color ochraceous brown ; ventral surface light. Length of body of an adult male 9.4, length of tail 15, and width of pectorals 10 inches. Com- mon in the rivers of Florida along the Gulf coast. Several specimens in the collection were captured in Lake Monroe, at a distance from the salt water, by Count Pourtales. DASIBATIS SAYI. J?rt/rt sayi Lesucur, Jour. Acacl. Nat. Sci. Phil, i, p. 42, fig. MyUobatis sayi DeKay, New York Fatiua, Fish. p. 376. Tnjyon sayi Mull, et Henle, Plagiostomen, p. 166. Ilyliobatis sayi, Storer, Syti. Fish. N. Amer. p. 262. Trygon sayi, Dumeril, Elasmobranch. p. 603. Disk quadrangular, about one-sixth wider than long, anterior margins nearly straight, posterior and inner borders convex, outer and posterior angles rounded. Snout not protruding beyond the lines of the margins. Ventrals rounded. Tail strong, rather more than one and a half times the length of the disk, with a strong serrated spine, bearing a short, low cutaneous expansion behind the spine on the upper side, and a longer, little wider one below, ending nearly opposite. Upper jaw undu- lated ; lower prominent in the middle. Teeth small, smooth in young and females, sharp in adult males. Three papilla? at the bottom of the mouth, and one at each side. Body and tail naked. Color olive brown in adult, reddish or yellowish in young ; lower surface whitish. This species closely resembles the European species pastinaca. A compari- son of specimens discovers the following differences: in Sayi the ante- rior margins form a more blunt angle at the end of the snout, which is less prominent at the apex, the outer and posterior extremities of the pectorals are rounder, the posterior margins are more convex, the disk is broader toward the ventrals, and the tail is longer; in pastinaca the lateral and hinder angles of the pectorals and the lateral angle of the veutrals are marked by blunted corners. A single small rounded tubercle on the middle of the back. There are specimens in the col- lection from New York, Pensacola, Bahia, and Bio Janeiro. A young female measured from snout to tail 7.1, length of tail 11, and width of pectorals 8.2 inches. 7<> i .i.viiiir.rrmxs TO NORTH AMKIJICAN ICHTHYOLOGY — iv. 1) LSEB M IS IIASTA'I A. .,// Imxliitit I>rKay. NV\v York F.-mna. l'i-li. p. ::7.">. pi. (M, tig. Vil49. fawfato Storer, 8 a. l'i-!i. \. AHUT. ]>. 'Jill. ; ata iMiim-i.l, KluMiKil.ruiirh. p. .".'.I','. Di>l. quadrangular, about one-fourth wider than long ; anterior mar- gins nearly straight, meeting in a blunt angle fm the end of tin- snout, . -Hived Dear the outer angle to meel the slightly convex posterior mar- gins: inner lenders convex; outer and hinder angles rounded. Ven- Irals almost ciitin-ly covered by the pectorals, hinder margins convex. 1 more than one and a half times the length of the disk, low-keeled 0,1 the upper side, a Ion--, broad membranous expansion below, rough- ened \vith small asperities, one or more serrated spines, liody smooth in \onn.u, very old with scattered small asperities. A row of narrow compi-essed tubercles aloii^- the middle, of the back and on the base of tiie tail ; the points of these tubercles are depressed and directed back- ward. On each shoulder, parallel with the median, there is a shorter row, the length of which varies according to the, age of the individual, ith with three papilla-. .Jaws with more curvature than those of mra and less than those of xnl'um. Young without tubercles. < ..lor bluish or olivaceous brown, darker on dorsum and tail, light on lower surface. Measurement of a young specimen: length of disk S.."», \.idth 10, and length of tail 1-1 inches. An adult male measured L'O inches across the pectorals and 1(1 in length of body. The museum con- tain.- >peci:neii> from Florida, Cuba, IVrnambueo, and Rio , Janeiro. DASIMATIS r,i;::\is. 1880, P.iill. Mn-v romp. /«"•!. vi, 171.) l>i>!> (piadrangi'.lar, a lit tie wider than long. Anterior margins nearly .1. curved Dear the Outer extremities to meet the con vex posteriors, meeting iii a blunt angle on the end of llie snout. Outer and posterior I pectorals round, without trace of angles. Yentrals bioad, iruiicate, with angles rounded. Tail less than one and a half times the lei.gl h o!' the disk, tapering to an acute point, depressed as far as to the ..pine, thence cMmpre»ed to the end of the cutaneous fold, and round point to the tip, u ith a short elevated membraneous expansion behind the >pine. and a longer and wider one on the lower side, extend- below the former and the spine. The expansions have their hinder remit ies oppo-ed : i hey end quite abruptly and an- widest near the ADDENDA TO MARSIPOBRANCIIIJ, ELASMOBRANCIIII, ETC. 71 termination. Mouth with five papillae, outer small. Teeth small, blunt. Upper jaw indented in the middle; lower with a prominence in front, Disk naked in the young* Adult specimens have three rows of tubercles on the middle of the back disposed as are those of D. kastata. A large specimen from Payta has three large, erect, broad-based tubercles in front of the caudal spine, and the tail rough with smaller ones. The short rows on the shoulders contain from three to four, and probably increase in number with age, as is the case with the closely allied Atlan- tic coast species. Color light grayish or olivaceous brown, reddish near the edges, white below, with round spots of brownish under the base of the tail. Compared with D. liastata this species differs in the shorter tail, rounder extremities of the disk, and the shape and size of the tu- bercles and membraneous fins. D. liastata has no expansion on the top of the tail, and that on the lower side is very long, of moderate width, and tapers gradually. Those of D. brevis are comparatively short and broad ; they rise gradually and terminate abruptly. From D. sayi this species is to be distinguished by the great development of the caudal expansions, their shape and length, and by the tubercles on shoulders and tail. A large female measures in length of body 17, tail 23, and width of pectorals 18 inches. A young male in length of body 8.1, tail 12, and width of pectorals 9.2 inches. Peru. DASIBATIS DIPTERURA. (Jordan & Gilbert. 1880, Proc. U. S. Nat. Mus. 31.) Disk rhomboid, slightly broader than long : anterior margins nearly straight forwards, meeting in a very obtuse angle; posterior margins curved ; lateral angles rounded. Tail nearly half longer than disk, with a conspicuous cutaneous fold below, and a smaller but evident one above. Upper jaw considerably curved, with a slight convex protuberance in front, which fits into a slight emargination in the lower jaw, which is convex, its outlines corresponding to the curves of the upper jaw. Bands of teeth wider in front than laterally. Inside of mouth, behind the lower jaw, with three fleshy processes. Teeth about f£; about 8 in a cross-series in the upper jaw, and 10 in the lower. Color light brown, somewhat marbled with darker, but without distinct spots ; tail black- ish ; belly white. Skin everywhere perfectly smooth in the young ; adult with small tubercles along the back. San Diego, Cal. Of the nine species enumerated above as belonging to American TL' t . i Kir.rTinNs TO Nnirni AMKIMCAX ICHTHYOLOGY — iv. . din- ha- ln-i-ii described from tin- Sandwich Islands. It isinviexv of the prtilialiilit v of its occiinvncc as an occasional visitoron our West- ern coasts lhai il is introilnccd. 9 Aa already notieed. in \"olnine VI, ]>a^e 171', of llie iiiilletin of the Mii.si-niM ol' Comparative /of,-i/ti<>n. \\liich includes the peculiar species of the family inhabit- ing the riv of South America. CLASS IV.-PISCES. (The True Fishes.) Skeleton bony or cartilaginous. Skull with sutures ; a lower jaw pres- ent ; membrane bones developed in connection with the skull ; gill-open- ings a single slit on each side, sometimes confluent ; gills attached to bony arches, normally four pairs of them, their outer margins free. Median and paired fins usually developed; a lyriform shoulder-girdle. Exo- skeleton various. Ova comparatively small. No "claspers". Brain- differentiated and distinctly developed. Heart developed, divided into an auricle, ventricle, and arterial bulb. As here understood, this group includes the great majority of recent fishes, and is equivalent to the Tcleostei, Ganoidei, and Dipnoi of most recent writers, the Actinopteri, Crossopterygia, and Dipnoi of Professor Cope. Omitting all notice of the Dipnoi and the Crossopterygia, all the members of which groups are extralimital and confined to the fresh waters of the tropics, it will be convenient to divide the American representa- tives of the class of Pisces into four series or subclasses — Chondrostei, Holostei, Physostomi) and PhysocUsti, the first and second including most of the Ganoidei of Miiller, the second and third the Teleostei. These groups are evidently of unequal value, the Physostomi and the Physo- clisti being very intimately connected, and the relations of the Holostei with the Physostomi are probably more intimate than their relations with the other Ganoids, as has been shown by Professor Cope. Never- theless, these groups exist in nature, and their recognition under one name or another is convenient. ANALYSIS OF THE SUBCLASSES OF PISCES. a. Arterial bulb muscular, with numerous valves ; optic nerves forming a chiasnia ; ventral fins abdominal ; air-bladder with a duct ; tail heterocercal. (Series GANOIOEI.*) 6. Ventral fin with an entire series of basilar segments; skeleton cartilaginous. CHONDROSTEI. 66. Ventral fin with the basilar segments rudimental; skeleton bony.. HOLOSTEI. * ydvof, splendor ; from the enamelled scales. 73 7 1 NTTEIBDTIONS TO NORTH AMKL'ICAX ICHTHYOLOGY IV. <;n. Art 'rial luill) with a pair of oppo-ite valves; optic nerves not forming a chiasma. (Scries Ti:i.;;osn:i.*') c. Air-bladder (if present > connected l>y an air-duct with the stomach or nv.oplia.uns: ventral tins (if present) abdominal, llx-ir hasilar segments riidimental, usually without spines; parietal bones usually united. PHYBOSTOML Air-bladder without duct; ventral fins (if present ) usually thoraeie or jugular, without basilar segment s : spines usually pre.-eiil , at least ill the dor.-al and \entral tins; parietal bones separated by the BUpraoccipital. PUYSOCLISTI. ARTIFICIAL KEY TO TIIE FAMILIES OF TISCES. Tin- following key is intended simply to facilitate the identification of species. N<> at tempt is made to indicate the natural characters or rela- tions of the families, and only those species of any group which occur within the limits of the United States are taken into consideration. I._ YKXTRAL FINS PRESENT, ABDOMINAL. * Dorsal tins •_', the anterior chiefly of soft rays, the posterior adipose. A. Body naked. B. Head with 1 to 8 long barbels; dorsal and. pectoral fins each -with a spine. ^1I.URID.s.\ri:ii >.!•:, 40. »'('. Teeth minute; doisal Jin short tSTKUNori vcmuJJ, 43. AA. lioily sealy. J>. Teeih broad, incisor-like C'IIAIJACINID.U, 32. ]>l >. Teetli (if Jiresent ) pointed. I Margin of upper ja\v formed by the prcmaxillaries alone. ]'. Dorsal tin nearly median. ( I. J!(idy with phosplioreseeiit s]iots SCOPKLIDJE, 42. <•'.. I'.ody without jillos]i!loreseent spots. II. Head scaly ; scales cycloid ; teeth cardifonn Sc. .r, -J'J. IIII. Head nailed ; scales ctenoid ; teeth villiform . . I 'i:i:< MI--I i > i:, -17. FT. ] ial fin posterior; teeth unequal; body elongate.. FABAIJCPID2B:,41. ]'.!'.. Margin of upper jaw formed by 7iiaxillaries posteriorly. .). Body with phosphoresoent .sjiots; gill-rakers none. ClIAfl loDONTID.'K, 44. .1.1. Body without phosphorescent spots ; j;ill-rak' nt. SAI..MONI P.K, -10. " " I ' led liy free spines. K. Ilody .scaleless, naked or with bony plates. I.. Ventral tins J, 1, 1 he spine strong ; MIOII! moderate. CAM i BO : ; MM:, , the sjiiiu' slender; snout prolonged. AI'I.MI:IIVNI IIIDI:. (i:?. KK. Body scaly ; snout tubular An.i >^ IDMA IID.K, fi'J. * 7l'/ Of, )" rl'.'cl ; unr'nn-, bone. KEY TO FAMILIES OF PISCES. 75 ** * Dorsal fins 2, the anterior of spines only, the posterior chiefly of soft rays. M. Pectoral fin with 5 to 8 lowermost rays detached and' fila- mentous POLYNEMID^E, 68. MM. Pectoral fin entire. « N. Snout tubular, bearing the short jaws at the end; body compressed CENTRISCIDJE, 60. NN. Snout not tubular. O. Teeth strong, unequal; lateral line present. SPHYRJSNIDJE, 67. OO. Teeth small or wanting; lateral line obsolete. P. Dorsal spines 4, stout ; anal spines 3. .MUGILID^E, 65. PP. Dorsal spines 4 to 8, slender ; anal spine single. ATHERINID.E, 66. **** Dorsal fin soft-rayed, followed by a series of detached fiulets. SCOMBERESOCID^E, 57. ««*** j)orsai fin single, of soft rays only or with a single spine. a. Tail evidently heterocercal. b. Body naked; snout with a spatulate blade; mouth wide, without barbels. POLYODONTID^E, '25. Z>Z>. Body with 5 series of body shields ; mouth inferior, toothless, preceded by 4 barbels ACIPENSERIDJE, -J i. 66Z>. Body scaly, c. Scales cycloid ; a broad bony gular plate; dorsal fin many-rayed. AMIIDJE, 28. cc. Scales ganoid ; no gular plate ; dorsal fin short LEPIDOSTEID^E, 27. aa. Tail not evidently heterocercal. d. Body naked. e. Throat with a long barbel ; no caudal filament ; mouth large. STOMIATIDJE, 45. ee. Throat without barbel ; caudal fin with a long filament ; mouth small. FISTULARIID.E, 61. eee. Throat without barbel ; no caudal filament; gill membranes joined to the isthmus C YPKINID^E, 31. dd. Body scaly. /. Pectoral fins inserted near the axis of the body ; lower pharyugeal bones fully united ; lateral line along the sides of the belly.. .SCOMBERESOCID.E, 57. ff. Pectoral fins inserted below the axis of the body ; lower pharyngeals separate. g. Vent in front of ventral fins; eyes concealed AMBLYOPSHXE, 43. gg. Vent behind ventral fins ; eyes normal. //. Head scaly, more or less. i. Upper jaw not protractile, its lateral margin formed by the maxillaries. j. Teeth cardiform ; jaws depressed, prolonged ESOCHXE, 51. jj. Teeth villiform ; jaws short UMBRID/E, 50. ii. Upper jaw protractile, its margin formed by prernaxillaries alone C YPRINODONTID^E, 49. hh. Head naked. Jc. Gill-opening separated by an isthmus; mouth toothless; lower pharyngeals falciform. I. Dorsal fin with a serrated spine CYPRINID^E, 31. II. Dorsal fin without serrated spine. m. Dorsal fin with (usually) less than 10 (developed) rays; pharyugeal teeth few (less than 8). CYPRINID2E, 31. 70 CONTRIBUTIONS! TO NORTH AMERICAN ICHTHYOLOGY — IV. mm. Dorsal !m with (usually) morethaiilOrays:p]iaryngcal tn-tli mi nuToiis CA TO-K.MII' E, 30. kJc. Gill-opening not separated by an isthuins; lower pharyn. » geal ImllfS llllt falciform. v. Throat without barbel ; no phosphorescent spots. 0. Lateral line present. j>. Lower jaw with a pillar plate: teeth villii'onii: tins with scaly sheaths KLOPID.K, 36. 2>p. Lower jaw without ^nlar plate. 1 ii nt and granular.. AXBULIDJE, 34. 00. Lateral line obsolete. s. Lower jaw much shorter than upper. t. Mouth small, toothless; maxillary not 1. aching lieyoml eye..l>i>l:<>soM.\Tll>.l . it. Mouth very wide, the, maxillary reaching much beyond eye ExiiKAruiu:, 39. 88. Lower jaw scarcely shorter than upper; maxillary compound C'LriT.in.i-:. 37. «». Throat with a long barbel; sides with phosphores- cent spots STO.MI \iii- i:. 43. II.— VENTRAL FINS 1'KESENT, THORACIC OR JUGULAR. A. E- .1 > unsymmetrical, both on the same side of the In -ad I'LF.rKoNKi HIM. l'J3. AA. Eyefl -\ linnet rical. IJ. Cill-openiiigs in front of the pectoral tins. <'. lindy mure mii'.i:, 101. 1 »1 >. Ventral tins separate. E. Ventral ra\ s I. "\. • nliorhital with a bony stay, which extends across the checks to or to- ward the prcoperele; cheeks sometimes entirely mailed. G. I'- ctoral I'm u it h ',! or I', lower rays detached and free. TI:I-.I 11 M . 108. 1'ci'toral tin cut ire. II. Slit behind fourth ^ill small .">. IT. Siibm -bital .-I a\ \\antin^; i hei ks not mailed. .1. Spinoiis dorsal transformed into a lamdlati'd siidving disk. I i in \i ii>ti> ]•;. 70. .1.1. BplnOOB dorsal (if present) DOi transformed into a sucking disk". K. Doi ;.! spines all orneailx all disconnected from each other. L. I '.od \ i-lon -::!,, |i rcle I'..1 \( A I I D.i;. 7 1. I I. Body oblong or ovate, compressed. M. Caudal peduncle \.]-:, 75. KEY TO FAMILIES OF PISCES. 77 I MM. Caudal peduncle stoutish, the fm little forked. STROMATKIDyE, 77. KK. Dorsal spines (if present) all, or most of them, connected by membrane. N. Pectoral fin with 4 to 9 lowermost rays detached and filiform POLYNEMIIXE, 08. NN. Pectoral fin entire. O. Dorsal and anal with detached fiulets. P. Anal preceded by 2 free spines CARANGHXE, 75. PP. Anal not preceded by 2 free spines. OO. Dorsal and anal- without finlets. Q. Lateral line armed posteriorly with keeled plates ; 2 free anal spines. CARANGID.E, 75. QQ. Lateral line unarmed. E. Throat with 2 long barbels (placed just behind chin) MULLID^E, 95. EE. Throat without long barbels. S. Voiner with teeth. T. Dorsal fin continuous, without distinct spines. U. Caudal fin deeply forked; no pseudo- branchue . . . CORYPH/ENID^E, 7d. UU. Caudal fin rounded; pseudobrauchue present. ICOSTEID/E, 101. TT. Dorsal fin with a differentiated spinous part. V. Gill membranes joined to the isthmus ; no lateral line. .. GOBIID^E, 104. W. Gill membranes free from the isthmus. W. Eyes lateral. X. Anal fin preceded by 2 free spines. — Scales cycloid, minute. • CARANGID^E, 75. — Scales ctenoid, moderate. POAIATOMID^E, 7G. XX. Anal fin not preceded by free spines. Y. Tail keeled CARANGUXE, 75. YY. Tail not keeled. Z. Anal spines none. SERRANID.E. 8G. ZZ. Anal spines 1 or 2. Scales large, deciduous ; mouth nearly vertical APOGONIIXE, 89. * Scales smaller, adherent ; mouth nearly horizontal. t Anal rays more than 20 : POMATOMID.E, 76. ttAual rays less than 20 • -.PERCID.E, 85. ZZZ. Anal spines 3. t Pseudobranchiae small, glandular, covered by skin CENTRARCIIIDJS, 84. it Pseudobranchiie large, exposed. H Front teeth incisor-like, compressed SPARID.E, 88. Iff Front teeth all pointed ; no incisors. V> Maxillary slipping under preorbital for its whole length. PlUSTIPOMATIDJS, 87. . * .TKir.rrii'XS TO XOKTII AMERICAN ICHTHYOLOGY IV. $$ Maxillary nut slipping under pici.il.ital po-d -i iorly SI:I;I:AMH.I:, 80. 7.7.7.7.. Anal spine- 1 to 10. < i \ i KAiinm.j. ,-1. \Y\V. Eyes superior: month nearly verti- cal UlSAXOSCOI'lD^E, 10o. SS. Yomer without tceih. <:. 'I'ail with a strong spine on each side-; teeth inci.-or-like TEUTHYt>ID.£, 99. tin. Tail without spine. A. Anal preceded l.y '.' free spiii'-s ; gill meml-iancs five from istlimns. ( AKANGIDJD, 75. Hi. Anal without I'm- spim -. I., ill .-eiiiorni ; soft parts of vertical fins completely scaly ; liody eumprc— . d mid elevated; anal s|iincs:{ or 4. or-al I'm continuous C'n.i. I DIM >\ i in.i;, '.i~. (/(/. l»or>al I'm ilccjply notched EPIIIPPID^i, 97. i ii'i'i m. ' . Lateral line ol.Milete. ./'. (iill nicmlirancs joined to the isthmus GOBIIP.E, 104. .'/. < .ill memhranes free from the isthmus CENTIIAKCHID^;, 84. <•> . Lateral line present. g. 1 'nrsal I'm without distinct spines; no anal spines ICOSTEID^E, 101. yr/. l)oi>al I'm with di.slinci .-pines. It. Anal spines 1 or 2. i. Lateral line interrupted; no slit behind 'fourth gill. l'c\IA( I'.XTRID/E, 96. ii. Lateral line comidete. extending to the tip of the caudal fin ; head scaly S( 1.1 XII..K, 91. til. Lateral line complete, extending to the base of the caudal. j. I'pperjaw with posterior canines ; dorsal I'm continuous. TKACIIIMH.K. I"-.-. .//. rpjKT.jaw without canines ; dorsal fins 2 l'i:i:ri !>.!•:. 65. 7i/i. Anal s]iincs I!. i. Anal with more than 1.". .-of| rays. /. rrc(.perele en i ire T.Mr.ioKicii'.r.. !>::. //. 1'leojiei-cle senate STHOMATK1UJE, 77. ii. Anal with less i hau !."> soft rays. /,. 1 tor.-al s]iines '.» or 10. /. ( 'hecks and opercli -s scaly Ori:i:n> r. 'J-J. //. ( 'hei'ks and opercles chielly naked LAIHM i>.r, '.'.">. /./,. 1 >orsal spines 1 1 to 1.".. >n. I'pper jaw with posterior canines LAIUMIM:. 95. mm. I'pprr jaw without ].o-tnior canines. " .Taw.s with incisors or molars, or hot h Pr AI:II>.K. fS. ' ,la\\s \\ ii h i loin ted teeth only l'i:ivi in .MATH >.!•;, -?. /.'./.-. 1 >'.i-:il .-pin. , 17 or more ; anterior teeth cnnini'-like. I. \i'.i:ii..T. 95. llli. Anal spines i! Cirm.ii >.!•:, 94. \ < ntial lavs more than 1. .".. ii. Caudal I'm wanting: scales spinoiis. . MACnUHiD^E, 1'Jl. ////. Caudal I'm well developed. "- Tail i-- real: \ cut rals jugular O.\i>n>r, 1'JO. UK. Tail diphyccrcal. ji. Ventral rajsiiliont 1."; dorsal nn single, ••levato«l. , 80. KEY TO FAMILIES OF PISCES. 7(J pp. Ventral rays about I, 7. q. Dorsal spiiies 3 or 4 ; vent anterior. APIIREDODERID^E, 83. qq. Dorsal spines about 11 ; vent normal ; scales large, very rough. BERYCID.E, 82. qqq. Dorsal spines about 10 ; vent normal ; scales minute ZENIDJE, 81. EEE. Ventral fins with or without spine ; the uumberof soft rays less than 5. r. Dorsal fin composed of spines only. s. Dorsal liu extremely high BRAMID^E, 79. ss. Dorsal fin low BLENNIIDJE, 112. rr. Dorsal fin of spines anteriorly, of soft rays pos. teriorly. t. Pectoral fins entire. u. Body entirely covered with series of bony plates TRIGLHXE, 108. uu. Body not mailed. v. Suborbital with a bony stay. COTTID^E, 107. vv. Siiborbital without bony stay. BLENNIID.S:, 112. it. Pectoral fin divided to the base in two un- equal parts TRIGLIXME, 108. rrr. Dorsal fin of soft rays anteriorly, of low spines posteriorly ZOARCHXE, 115. rrrr. Dorsal fin of soft rays only. w. Dorsal fin very short ; body mailed. TRIGLID^E, 108. u-w. Dorsal fin very long ; body with small scales. x. Dorsal and anal joined to the cau- dal ; pseudobranchia? present. y. Gill membranes joined to the isth- mus ZOARCID^E, 115. yy. Gill membranes free from the isthmus OpmDiiDyE, 118. aw. Dorsal and anal free from the cau- dal or nearly so ; no pseudo- branchiae. z. Tail isocercal ; chin usually with a barbel GADID^E, 120. zz. Tail diphycercal, no barbel. BROTULOXE, 119. CC. Body scaleless, smooth or armed with tubercles, prickles, or scattered bony plates. 'Breast with a sucking disk. A. Gill membranes free from the isthmus ; no spinous dorsal GOBiESOCHXE, 111. AA. Gill membranes joined to the isthmus. B. Skin smooth LIPARIDID^E, 109. BB. Skin with tubercles or spines C YCLOPTERID^E, 110. ** Breast without sucking disk. C. Ventrals completely united GouinxE, 104. CC. Veutrals separate. SO rnXTKir.rTIoNS TO XOKTII AMKKICAX ICHTHYOLOGY IV. ]>. I»»!--:il and :in:il I'IMS followed by I'm I'.. Free :ui:il spines 'J CAKANCII. i . 75. l!i;. 1 j-. •. • anal spines in tin- Sro.Mr.Kii>. 1>I>. I>..i'-:il ;iii(l :ili:ll willioilt lilllcls. 1 . i pper jaw prolonged into :i "sword" Xi run D.I:, 72. J 1 . I pper jau nut prolonged into a sword. (I. Slllmrliit-ll with M 1>( HI V si. -IV COTTID/E, lH7. ' Suborbital without bony stay. li. An.-il tin ai»ent; caudal I'm rudimentary or directed upward. T;: \c m ri ]:I:H).K, 100. Jill. Anal I'm present ; caudal developed. I. Ventral rays Irss than I. .">. J. J>oi>al .-pines HOIK- at all; lateral line with prid.les. Iros-i ::n> i:, 101. .1.1. Dorsal spines very few (less than f>) I>.\i K.M IIIM.I.. 111. .1.1.1. 1 >orsal spines nillileroiis 1 il.LNNHD.K, ll'J. II. Ventrals tlmraeie. I, .".. i>r more. K. I >orsal with a series of IK my ] dates at liase 7i:Mi« ; . ~1. Klv. 1 lorsal williout liony plates at lia-e. L. Anal jin-eedi-d Ity '2 Tree spines C.\i:.\\<;i D r. 7."i. LL. Anal without free sjiiues TK.UMJIMK.K, l"v;. Ill>. CMll-opt iiint;s Muall, behind Hie pectoral tins, which are more or ]< >s pedie- lllate. M. Gill-opeuings in or licliitul upper a\il of jn-etorals ; month small M.\i,nir.in.' . 126. MM. Gill-openings in or liehind lo\\er axil ; mouth lar^e. N..llead compressed; no ]iseudolirancliia'. AN 11.NNA1.MI1> E, ' XX'. Head depressed : pseudobranchiffi i>resent. \ .< il'llllHJE, 124. III.— VKXTK'AL FINS KNTIl.'KI.Y \YAXTIN<:. A. (iiil-opeiiinu^ ventral, eonlliient in a longitudinal slit ; hody eel-sha]ied. >\ \ \riKii:i:AN< ini> r. 7,-\. }'.. ( iill -openings lateral, or not eonlliient. ' . liil! memliraiies united lo the IflthmuS (i. 6., gill-Openinga separated l>y an isthmus). I >. I lO] -al In i single, of spines i.iily. Mol;ir leelh pre,,-|ll A N A I III 1 1 1 ( I ! A I "I I > T, 1 1 '.}. i .1 '.. Miil.ir teelli nolle I '.1 .1 . N N 1 1 1 >. !•:, 1 1'J. I 'I'. I '"i -al Bus two, anterior spinouSj posterior soft ; teeth inci-or-liki-. r.Ai.i.sm 1 'I 'I '. I '"i -al tin undiv ided. the spines feel.le or none. !•• ^ii'.iit I n In ilar, I.e.-u in- i lie short , tool hless moni h at its end ; l>od\ niaili il. i. ' .ndal I'm pi. ,eni ; head in the line of the axis of the body. f-i NI.N A niii>.i:, 58. 1 ndal (in want iny : head not in line oi' axis of IK. dy. Jlii'i-ocA.Mrin.i:. 68. Kl . SIP. in not liilmlar. i I'.ndy < Ion-all-, i i 1 --liapi d. II. I'ecioral lins want in-;. I Oill-openilij • mall M''i:.i NII. r., 52. II cill-.-penin-- i Lerate A.\<;rii.i,n>.r:, 53. Jill. 1'e. lc.i.,1 |,n, pie.-,, lit. KEY TO FAMILIES OF PISCES. 81 J. Jaws attenuate, forming a long, snipe-like beak. NEMICIITHYID^E, 56. JJ. Jaws not attenuate. K. Tail tapering into a filament SACCOPHARYNGII>J£, 54. KK. Tail not filamentous. M. Maxillaries and premaxillaries distinct ZoARCnxas, 115. MM. Maxillaries and premaxillaries more or less coalescent with vomer and palatines. ANGUILLIDJE, 53. GG. Body not eel-shaped. N. Breast with a sucking dislr. O. Skin smooth LIPARIDHXE, 109. OO. Skin tubercular C YCLOPTERHWE, 110. KN. Breast without sucking disk. P. Teeth in each jaw confluent into on&.,* Q. Body compressed, rough ORTH3CGOIU8CUXE, 131. QQ. Body not compressed, spinous-.DiODONTiD^E, 130. PP. Teeth in each jaw confluent into two. TETRODONTID^E, 129. PPP. Teeth separate. R. Body enveloped in a bony box. ..OsTRACinxE, 127. RR. Body not mailed STROMATEHXE, 77. CC. Gill membranes free from the isthmus. S. Vent at the throat. T. Vertical fins confluent ; body eel-shaped. FlERASFERIDJE, 117. TT. Vertical fins separate ; body oblong. AMBLYOPSIIXE, 48. SS. Vent posterior. U. Caudal fin wanting ; body naked. TRICHIURID.E, 73. UU. Caudal fin present. V. Upper jaw prolonged into a sword. * XIPHIID^E, 72. VV. Upper jaw not prolonged into a sword. W. Body ovate, much compressed. STROMATEID.E, 77. WW. Body oblong or elongate. X. Gill membranes broadly united; teeth present. Y. Dorsal fin of spines only. BLENNIIIME, 112. YY. Dorsal fin of soft rays only. COXGROGADIIWE, 116. YYY. Dorsal fins 2, anterior spinous, posterior soft COTTIDJE, 107. XX. Gill membranes separate. Z. Jaws toothless, the lower jaw projecting AMMODYTID^E, 69. ZZ. Jaws with teeth, lower not pro- jecting OPHIDIID/E, 118. Bull. Nat, Mus. No. 16 — -6 82 coNTinr.rnoxs TO NORTH AMERICAN ICHTHYOLOGY — iv. SUBCLASS CHONDROSTEI. (The Xturgeon*.) Skeleton ]i;irtly cartilaginous. Ventral fin abdominal, with an entire Krriesofbasilar segments. Xosubopereuluiii or preoperenlum. liranchi- -mgle or) wanting; a pnecoracoid arch ; no symplectie bone. Mesopten giiim distinct; interdavicles present.* Arterial bulb with several pairs of valves. Optic nerves forming a chiasma. Intestine with a spiral valve. Air-bladder connected by a duet, with the tesopha- -u>. Tail heterocercal. its tin with fulcra. Skin naked or armed with bony plates. This group comprises two orders. (Onl«T i'ln>i«li-t>xlii (.iintluT, viii, li^-olT. #6i"5pof, cartilage; uari<r:ecoraeoid arch ; no sympleeticbone ; i)remaxillary forming mouth. border; no snboperciiliiin, i)reoperculum, nor interopereulum ; mesop- distinct ; basihyals and superior ceratohyal not ossified: inter- cla\ides present: maxillaries olisolete; branchihyals cartilaginous. Tlii- order contains but one family, Polijinlontltla'. ( LOM-I -Anlilli •> ". Trans. Am. Phil. S..c. 1- 25. POLYODONTID^E POLYODON. 83 nous teeth. Similar teeth on the palatines. No tongue. Spiracles present. Operculum rudimentary, its skin produced behind into a long, acute Hap. No pseudobranchiai nor opercular gill. Gills 4J. Gill- rakers long, in a double series on each arch, the series divided by a broad membrane. Gill membranes considerably connected, free from the isth- mus. A single broad brauehiostegal. No barbels. Nostrils double, at base of blade. Lateral line continuous, its lower margin with short branches. Dorsal fin well back, of soft rays only. Anal similar, rather farther back. Tail heterocercal, the lower caudal lobe well developed, so that the fin is nearly equally forked. Sides of the bent portion of the tail armed with small rhombic plates. Caudal fin with fulcra. Pec- torals moderate, placed low. Yentrals abdominal, many-rayed. Air- bladder cellular, not bifid. Pyloric ccBca in the form of a short, broad, branching, leaf-like organ. Intestine with a spiral valve. Two genera known, Polyodon and Psephurus, each of one species. Sin- gular fishes, inhabiting the fresh waters of the United States and China. They feed chiefly on mud and minute organisms contained in it, stirring it up with the spatulate snout. (Polyodontidce Giintker, viii, 346-347.) * Gill-rakers very fine and numerous ; caudal fulcra small and numerous. POLYODON, 46. 46.— POLYODON Lac6pede. Paddle-fishes. (Spatularia Shaw : Platirostra Le Sueur.) Lace"pede, Hist. Nat. Poiss. i, 402, 1798: type "Polyodon feuille" = P. folium Bloch.) Gill-rakers exceedingly numerous, very slender ; spatula broad. Cau- dal fulcra 13 to 20 in number, of moderate size. Rivers of the United States. (rroAo?, many; odcbv, tooth.) 73. P. spatliula (Walb.) J. & G.— Paddle-fish ; Spoon-Mil Cat; Duck-Mil Cat. Color olivaceous, rather pale. Opercular flap very long, nearly reach- ing to vcntrals. Spatula broad. Premaxillary extending far behind the small eye. Skin smooth, or nearly so, except the rhombic plates on the sides of the tail. Yentrals near the middle of the body ; dorsal well behind them; anal mostly behind the dorsal, and somewhat larger; these fins somewhat falcate. Fin-rays slender. Spiracle with a minute barbel. Isthmus papillose in the young. Spatula 2£ to 4 times in length. Whole head, with opercular flap, more than half length. Head, without spatula or flap, about 5. D. 50-60; A. 50-G5; V. 45- $4 COXTKIBT'TIOXS TO NORTH AMERICAN ICHTHYOLOGY - IV. I.. ."-»; feet. Mississippi Valley and rivers of the Southern States; gen- erally abundant. (N.//;,i/».«t Kixilluiln Wall):ui!ii, Artrdi Pise. 1792, 522: "Polijodon fcuillc" Lac^i^dc, Ili-r. N;ii. I'..;--, i. I"'.' : I', folium SrlmHder ed. Bloch, Syst. Ichth. 457 : Spnl. l-oi. v, '.'i'rJ: I'ltiiirostra edcntula (adult) Lo Sueur, Journ. . N:it. ScL I'liiln. •.".'7 : / '../y/i'Hwi; anther, 34G.) ORDER II.-GLANIOSTOMI. (The Sturgeons.) A priecoracoid arch. No symplectic bone. Maxillary present. Xo snboperculam or preoperculuml Interoperculum present. Mesoptery- gium distinct. Interclavicles present. Basihyals and superior cerato- hyal not ossified. Branchihyals osseous. This group is composed of the le family Acipenseridce. (flavcs, a cat-fish, Silurus ; aru;>.aj mouth.) FAMILY XXVI.— ACIPENSERIDCE. (The Sturgeons.) r.ody elongate, subcylindrical, armed with five rows of bony bucklers, cadi with a median carina which terminates in a spine. A median dor- sal series, and a lateral and abdominal series on each side, the abdomi- nal series sometimes deciduous. Between these the skin is ron.uli, with small irregular plates. Snout produced, depressed, conical or subsput- nlate. .Mouth small, inierior, protractile, with thiekeiied lips. No leeth. Four barbels in a transverse series on the lower side of the snout in front of the mouth. Eyes small; nostrils large, double, in front of eye. Gills I. A n accessory opercular gill. Gill membranes united to the isthmus. No branehiostcgals. Maxillary bone distinct from the pi- -maxillary. Head covered with bony plates united by sutures. Fin- nix s slender, all articulated. Vertical fins with fulcra. Pectorals placed low. Ventrals many-rayed, behind middle of body. Dorsal plaeed ]H»ierioily. A nal somewhat behind it, similar. Tail heterocer- cal. the lower caudal lobe developed. Air-bladder large, simple, con- nected \\ith tlieii-sophagns. I'seudobranchia' small orobsolete. Stom- ach \\ithoiit blind sac. KYctuin \\ith a spiral valve. Pancreas divided into pylorie appendage-. Large tabes «»f the Beas and fresh waters of northern regions. "Most of the species are ini-ratory, like the salmon, which are found hi the same \\ uters. Genera i', species about 20, although more than five times that number have been described. The American species especi- 26. ACIPENSERID^E — ACIPENSER. 85 ally have been unduly multiplied, particularly by Auguste Dumeril, who has found upwards of forty of them in the museum at Paris. The actual number of American sturgeons does not exceed 7, and is more likely still less. The changes with age are considerable ; the snout in particular becomes much shorter and less acute, and the roughness of the scales is greatly diminished; the ventral shields sometimes disap- * pear altogether. The number of plates, although one of the best spe- cific characters, is subject to considerable variations. (Acipenseridce Giinther, viii, 332-345.) * Spiracles present ; snout subconic ; rows of bony shields distinct throughout. ACIPEXSER, 47. ** Spiracles obsolete ; snout subspatulate ; rows of bony shields confluent on the tail. SCAPHIRRHYXCHOPS, 48. 9 47.— ACIPENSER* Linnaeus. Sturgeons. (Artedi, Linn. Syst. Nat.: type Acipcnser sturio L.) Snout subconical, more or less depressed below the level of the fore- head. A small spiracle over the eye. Caudal peduncle moderately long, deeper than broad, the rows of bony bucklers distinct to the base of the caudal fin. Tail not produced into a filament, its tip surrounded by the caudal rays. Gill-rakers small, narrowed or lanceolate. Pseu- dobranchise present. Species numerous. (Latin acipenser, a sturgeon ; from a'zcc, point; nevTa, five?) • 74. A« Sturio L. — Common Sturgeon. Snout rather sharp, nearly as long as the rest of the head, becoming comparatively shorter and blunter with age. Barbels nearly midway between mouth and tip of snout, shortish, not reaching the mouth. Gill-rakers small, slender, pointed, sparse, not longer than the pupil. * M. Dunie'iil (Hist. Nat. Poiss. ii, 89) divides this group into six subgenera, as fol- lows : a. Spines of dorsal shields situated near their middle. (Mcsocentres.) &. Stellate plates none. c. Scutella (between large shields) disposed without order Huso. cc. Scutella disposed in quincunx ACIPENSER. W). Stellate plates numerous ANTACEUS. aa. Spines of dorsal shield at the posterior extremity. (Opisthocentres.) d. Stellate plates none. e. Lip emarginate STERLETUS. ee. Lip entire LIONISCUS. dd. Stellate plates numerous HELOPS. The same species at different ages may frequently belong to two or more of these subgenera. niir.iTioNs TO NORTH AMERICAN icnTHYOLOGY — iv. Fnlrr:i roughish. not enlarged. Lower lobe of tail rather sharp. Sides of tail with regular rhombic plates. IMalcs mesocentrous, rather rough. I smaller than dorsal, placed mostly below if. Anterior rays of pectoral thickened. "Skin with very small rough points in very yoiiii- • examples; in older ones these ossifications are broader, rough, snbstellate. and more or less regularly arranged in oblique series.1' D. in-M: A. L'ii-30. Dorsal plates 11-14; lateral L'7-30; ventral plates 11. Atlantic Ocean ; ascending: rivers of Europe and North America. Var. oxyrrEiynrEuis (Mitchill), the American Sturgeon, has the num- ber of lateral plates generally fe\ver — L'7-1'0 instead of 29-36, as in Euro- pean exam] iles. The stellate ossifications are also said to be some- what rougher than in the European fortn. Massachusetts to Florida; abundant. (I,. S\>i. X:ii.; < ;iintlnT. viii, 3-42: Accuser oxyrliyncnus Mitcliill, Trans. Lit. & Phil. Sen-. X. Y. i, 40'J, and of most American writers.) A. trailsilloutaBluS Richardson. — ll'httr sturgeon; Columbia River Sturgeon; Sitrriliitr:-tii Sliu'i/i nil. Color dark grayish, scarcely olive-tinged, and without stripes. Dor- sal shields mesocentrous. with a compressed blnntish spine, which is anteriorly often serrated, and followed behind by a compressed keel. • Lateral shields rather opisthocentroiis. Skin with stellate roughnesses, but smoother than in .1. mnlifoxfris. Snout sharp in the young, be- coming rather blunt and short in the adult, when it is considerably shorter than the rest of the head. P.arbels rather nearer to the tip of snout than to the mouth. Gill-rakers comparatively long, more than .'* times as high as broad, about LT» in number. Upper lobe of tai[ with rhombic, plates. First caudal fulcrum, above and below, enlarged and granular. Lower lobe of caudal rather sharp and long, not much shorter than upper. Dorsal plates 12; lateral ;'><;-!'.>, usually about 11 : ventral 10. Anal I'm mostly below dorsal. D. l.~»: A. L'S. Depth 7 in length ; head !. Pacific coast, south to Monterey, ascending the Sacra- mento. Columbia, and Fiber's ] livers in large numbers in spring. Eteaehee .1 \\ei-Jit of :ioo to COO pounds, and is used as lood. l.'i. li -ii'U'in, r.-imia r.iir.-Aiiii-r. iii, -,'7-, IS III: .(<•;/« nx, r liniclii/rh i/uclnm and acuti- r»*t»- > ...lit, ; \\lrs. I'lur. C;,!. Ar.,,1. .\ a I . BOL 1^4, 1"», Hi : Jc(>7(.S(T tnillxllWlltUHUa ami /'/•-/' h i/rlii/n, Im i ( iiim lirr, viii, ::;',i;, :;:',7. ) 7<>. A. i:J<'(lll <>s(l is \\ r,-s. ->;,;,„ Slin-'l,;,,,. ('..lor oli\e green, \\ith an ..live stripe on the median lino of the belly and one on each side above tin- ventral plates, these stripes ceasing op- tin- vent. Shields generally opisthocentroiis, with a strongly 25. ACIPENSERHLE — ACIPENSER. 87 Looted spine. Skin very rough. Snout about as in A. trammontanus, sharp in the young, becoming blunt with age, usually rather shorter than the rest of head. Barbels nearly midway between snout aud mouth. Gill-rakers scarcely higher than broad, about 17 in number. Upper lobe of tail with some scattered plates. Caudal fulcra not en- larged. Lower lobe of caudal short and blunt, little more than half the length of the upper. Dorsal plates 10; lateral 28-30; ventral 9. Anal fin about half below the dorsal. D. 37 ; A. 30. Depth 7-J in length ; head 4^. Pacific coast, ascending the rivers from San Francisco north- ward, reaching a large size. Less abundant than A. transmontanus; not used for food, being reputed poisonous. (Ayres, Proc. Cal. Acad. Nat. Sci. i, 15; Giinther, viii, 342: Acipenser agassizi Giiuther, viii, 344 : Acipenser acutirostris Giinther, viii, 344 ; not of Ayres.) 77. A. rubicundus Le Sueur. — Lake Sturgeon; Ohio Sturgeon; Black Sturgeon; Stone Sturgeon ; Lock Sturgeon. Blackish above, sides paler or reddish. Body comparatively elongate ; snout slender and long in the young, becoming quite blunt with age, when it is considerably shorter than the rest of the head ; shields large, rough with strongly hooked spines, becoming later comparatively smooth. Skin with minute rough plates. Ventral shields growing smaller with age, and finally deciduous. Dorsal shields 13 (11-16); lateral shields (34) 30-39; ventral plates 8-10. D. 35; A. 26. L. 6 feet. Weight 50 to 100 pounds. Mississippi Valley, Great Lakes, and northward. Our common fresh- water sturgeon, usually not descending to the sea. (Le Sueur, Trans. Arner. Phil. Soc. i, 1818,388: Acipenser maculosus Le Sueur, Trans. Ainer. Phil. Soc. i, 393: Acipenser rupertianus Richardson, Fauna Bor.-Ainer. iii, 311: Acipenser carbonarius, 1-h»i,H" (Gill, MSS.) Jordan & Cop.-hmd, Bull. Buff. Soc. Nat. Hist. 187G, 161 ; type .i( i/n user platorynchut Rafinesqne.) Snout broad, depressed, subspatulate or shovel-shaped. 2STo spiracle. Caudal peduncle very long, strongly depressed, broader than deep. l{ows of hony bucklers confluent below the dorsal fin, forming a com- plete mat of mail on the tail. Tail produced in a filament beyond the caudal tin. Gill-rakers somewhat fan-shaped. PseadobranchiaB obso- lete. Species about 4, inhabiting the fresh waters of the United States and Central and Eastern Asia, (ffzdpi), spade; ^>^«?, snout; wi//, appear- ance.) 79. S. platyrrh) nclitis (Rafmesque) Gill. — Shovel-nosed Sturgeon; Jl'ltitc sturgeon. Body elongate, tapering into a slender, depressed tail, whieli extends beyond the caudal fin in the form of a filament. This filament is long and slender in the young, but is frequently lost in the adult. Bony shields o) list hocentrous, sharply keeled, the series continent beiow the dorsal, obliterating the smaller plates between. Two occipital plates \\iili short keels. A spine in front of eye, and one at the posterior edge of the rostral " shovel " ; snout in the young with a few spines. Barbels nearer mouth than tip of snout. Greatest width of head about half its length. Xone of the fulcra enlarged. Dorsal and anal small. Anal partly below dorsal. Gill-rakers small, lamellate, somewhat Ian-shaped, ending in :>-\ points. Dorsal shields 1.">-1S; lateral 41-46 ; ventral 11- !•"•. Head I in length. L. 5 feet. .Mississippi Valley and streams of the \Ye-terii and Southern States; common. (Atipenser platorhynchus ]>;ilincs(|iic, Irhth. Oh. Irt-JO, 80: .Vr<;;>/uY/< //>«•// ».s nifnn<*hes. Primary radii of jtosterior limb generally reduced to one i IK 1 imeii I . Subopcrculuiii and preoperciilum present. • . . In ui.r.U l.i-_MMTiiii^ with /., /i isdonl.l, ,1 .-.firra j.ivlix " ( /./././/// ,\- Sr,,l/.( Jr.-Kn.t,'!. 11 ; hem <• Soaphirrkynohope, fiifmtrrAompAu*, and all siinilar words are ••rli \\iilt. 'ii wilh llir dcinlil.- r. 27. LEPIDOSTEIDJ2. 89 Brafachiostegals present. Coronoicl bone and proecoracoid arch present. Arterial bulb with several pairs of valves. Optic nerves forming a chi- asma. I ntestine with a spiral valve. Air-bladder cellular, lung-like, con- nected by a sort of glottis with the oesophagus. Tail heterocercal. Skin covered with scales, which are ganoid or cycloid. As here understood, this group consists of the two orders Ginglymodi and Halecomorphi, the Crossopterygia being considered as forming a distinct subclass. The Chondrostei, Holostei, and Grossopterygia form the series or subclass Ganoidei, represented by five widely divergent families among recent fishes and by a great variety of extinct types. These forms, so far as known, agree in a number of respects already indicated, and differ from all the Tcleostei, or ordinary fishes, in the presence of several pairs of valves in the arterial bulb, and in the presence of the optic chiasrna. The relations of the Halecomorphi with the Teleosteau order of Isospon- dyli are, however, undoubtedly very close. (danoidei Holostei part Gii.nth.er, viii, 324-325, 328-331. 6/lof, complete; OOTEOV, bone.) ANALYSIS OF ORDERS OF HOLOSTEI. * Vertebrae opisthoccelian ; maxillary bone transversely divided into several pieces. GINGLYMODI, I. ** Vertebrae amphicoelian ; maxillary bone not transversely divided. HALECOMORPHI, J. OKDEE I -GINGLYMODI. (The Gar Pikes.} Parietals in contact. Pterotic, basis cranii, and anterior vertebrae simple. Symplectics present. Mandible with opercular, coronoid, an- gular, articular, and deutary bones. Third superior pharyngeal small, lying on fourth. Upper basihyal wanting. Maxillary transversely divided. A cartilaginous praecoracoid arch. Vertebrae opisthocoelian. Pectoral fins with mesopterygium and five other basal elements. Tail heterocercal. This order includes the single family Lepidosteidcv. hinge; o'oou-, tooth. FAMILY XXVII.— LEPIDOSTEID^E. (The Gar Pikes.) Body elongate, subcylindrical, covered with hard, rhombic, ganoid scales or plates, which are imbricated in oblique series running down- ward and backward. Both jaws more or less elongate, spatulate or beak-like, the upper jaw projecting beyond the lower. Preinaxillary 90 CONTKII'.ITIOXS TO NORTH AMERICAN ICI1TUYOLOGY — IV. forming iim>i of tin- margin of the upper jaw; the maxillary transversely divided into several pieces. Lower jaw composed of as many pieces as in reptiles. Coi^noid present. IJoth jaws with an outer scries of small ;h, fellowe.l by one (or two) series of large teeth, besides which on the jaws, vomer, and palatinesare series of small, closc-.set, rasp-like teeth. Ton-lie toothless. Large teeth of the jaws conical in form, pointed and stiiate. piaeed at right angles to the jaw. These large teeth rest, accord- in- to Agassi/, in a rather deep furrow, protected oil the outside by the raised border of the jaw, and on the inside by a ridge of the same nature. These teeth are pierced in the centre by a foramen, which communicates with the maxillary canal, and through which the nerves and blood vessels enter the pulp cavity of the tooth. The forms of the folded layers of dentine within the teeth are peculiar. Pharyngeals with rasp like teeth. Tongue short, broad, emarginate, free at tip. Ex- ternal bones of skull very hard and rugose. Eyes small. Xostrils near the end of the upper jaw. An accessory gill on the inner side of the operde. PseudobranchiaB present. Xo spiracles. Gills four, a slit be- hind the fourth. Branchiostegals 3. Gill membranes somewhat con- nected. free from the isthmus. Gill-rakers very short. Air-bladder cellu- lar, Lung-like, Somewhat functional, communicating by a glottis with the • esophagus. Fins with fulcra. Dorsal tin short, rather high, posterior, nearly opposite the anal, which is similar in form. Tail heterocercal, in the young produced as a lilament beyond the caudal lin. Caudal convex. Yentrals nearly midway between pectorals and anal. Pec- toral and ventrals moderate, feu -rayed. Vertebra1 with ball-and-socket joints (njiixthiHwlian). IS tomach not coical. Pyloric appendages numer- ous. Spiral valve of intestines rudimentary. Fishes of the fresh waters of North America. Genera 1 or 2; species probably '.'> or 1. although more than 10 have, been described. These tishes are of much interest to .geologists from their relationship to extinct Ganoid types. " liiiiiilirr, \iii. 328, :::n.) ;<-Hli of tin- npjH-r j:i\v iii a Mii^lr si-rirs (in adult) .......... LKI«II><>STI is, •!'.>. • Mi i.f n|i]n>r j:i\\ in i \\«, Ncii.-s ............................ Li ..... i. ri MS, 50. lf>.-L,EPIDOSTEUS Oar Pikes. '••'"•' |"'l"', lli-t. Nat. 1'niss. v, 331, 1803: typo /.< i>i«<>*tni* iKirialin Lac. = ''• ) This genus is chai acteri/.ed by the presence of but one row of largo li in each j iw. There are in the upper jaw, first, the outer series of 27. LEPIDOSTEID.E - LEPIDOSTEUS. 91 small, sharp, even teeth, then the series of large teeth, some of the anterior teeth being usually movable. Next comes a series of fine teeth, in one row in front, becoming a band behind. Then the voin- erine teeth also in a long band, and posteriorly outside of the voineriiie band a palatine baud. These bands on the roof of the mouth' are fre- qneutly somewhat confluent or irregular. In young specimens some of the palatine teeth are often enlarged, sometimes forming a regular series. Lower jaw with an outer series of small teeth, then a series of large teeth, then a broad baud of fine teeth on each side. No teeth on tongue. Each of the large teeth fitting into a depression in the op- posite jaw. Waters of the United States. (/U-k, scale; darfov, bone.) * Beak long and slender ; the snout more than twice the length of the rest of the head. (Lcpidosteus.) §O. L.. OSSetlS (L.) Agassiz. — Lony-nosed Gar; Bill-fish; Common Gar Pike. Olivaceous, pale and somewhat silvery below. Vertical fins and pos- terior part of the body with round black spots, which are more distinct in the young. Very young with a blackish lateral band. Snout a little more than twice the length of the rest of the head, its length 15-20 times its least width. Head 3 in length ; depth 12. D. 8'; A. 9. ; Y. 6 ; P. 10 ; Lat. 1. about 62. L. about 5 feet. Great Lakes and rivers of the United States from Yerinoiit to the Eio Grande j generally abun- dant.* (Esox osseus Linn. Syst. Nat. : Lepisosteus oryurus Raf. Ichth. Oh. 73 : Lepisosteus liuron- ensis Richardson, Fauna Bor.-Arner. iii, 237 ; Giinther, viii, 330.) ** Beak shorter and broader, little longer than the rest of the head. (Cylindrosteus\ Rafiuesque.) 81. Jj. platystOEKlIBS Raf. — Short-nosed Gar. Colors of L. osseits or rather darker. Snout usually about one-third longer than the rest of the head, sometimes about equal to it, its length 5-6 times its least width. Head 3 J in length ; depth 8. D. 8 ; A. 8 ; V. 6 ; Lat. 1. about 56. L. 2-3 feet. Gr.eat Lakes and southern and western rivers, with the preceding, but less abundant northward. (Lepisosteus platostomus Ratiuesque, Ichth. Oh. 72; Gunther, viii, 329.) * M. Auguste Dume~ril (Hist. Nat. Poiss.) divides this species, as represented in the Museum at Paris, into seventeen, which are distinguished by trifling differences in pro- portions and numbers of scales. It is seldom safe to found either a species or a genus of fishes ou differences in proportions alone. t Rafiuesque, Ichth. Oh. 1820, 72 : type Lepisosteus platostomus Raf. (nvfavSpof, cylin- der; oareov, bone.) I1 2 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — iv. 5O.— LBTHOLEPIS Eaiinesque. AUiyiitor G'«/-x. (.ttnu-toxti UK K;iliuesque,<1820.) iir.-i|iir, AiiH-r. Month. M:i^. iii, 4-17, 1818: type Liiholt-pi* adamantinua Raf.) This genus is scarcely distinct from Lepidostem, differing only in the pre.M-nce of ;i second series of large teeth in the upper jaw, along the outer mar-in of the palatine bones, at their junction with the premaxil- larie>. J'robably but one species, in the wanner parts of the United States. ;md southward to Cuba aud Central America. (tiUo~, stone; /.-'::, scale.) 82. li. Is'i%l«'4'!nos (liloch &. Schiiricler) Jordan & Gilbert. — Alllijator (iur. Cnliir -reenish, paler below, the adult usually not spotted. Snout usually not quite so long as the rest of the bead, its least width con- tained :\.\ times in its length. Head 3J in length. D. 8; A. 8; V.(}; Lat. 1. (i(». Scales in an oblique series from the veutrals to middle of back ix-i_'0. L. S-10 feet. Eivers of the Southern States, Cuba, Mex- . and Central America; reaching a great size. i ' .'.' /.'MM- 1-iriilin (iiiidin ed. Liun<5, i, 13dO: Esox iristccchus Schneider eel. Blocli, H0.">: I.i in: ..,.-/. nft ^jintula Lac('-p. v, '.\'.\'.\: Lrpisosteus or AtraatOttmu forox ICalinrstjiu', Iclith. Oh. ?:5: I.i'fiitloMti n» niaiijuan Poey, M6m. Cuba, i, 273: t Atractosicus troiricuy Gill, Proc. Ai.nl. Nat. .Sci. 1'liila. Ido3, 17'^: Leyidosteua viridis Giiuther, viii, 329.) OBDEB J.-HALECOMORPHI. (The Annas.) 1'aiielals in contact. J'terotic, basis cranii, and anterior vertebra' simple. .Mandible \\ithopeivular and coronoid. Maxillary not trans- \ei.M-l\ x --meiited, bordering the mouth. Third superior pliaryngeal h ing on enlarged I'ourtli. ("pper basihyal wanting. Vertebras am phi- cd Han. I'eetoral iins with mesopterygitun and eight other elements. This order includes only the family of A mil da. (Latin halrcoiiiorjtliitx, 1.. lined like a >liad; in allusion to the resemblance between this group of and the FAMILY XXVIIL— AMIID^E. (The I'.«'d.\ oblong, mmpressrd behind, terete anteriorly. Read subconical, anteriurly blnntish, slightly depressed, its supeiiicial bones corrugated 28. AMinm 93 arid very hard, scarcely covered by skin. Snout short, rounded. Lat- eral margins of upper jaw formed by the maxillaries, which are divided by a longitudinal suture. Jaws nearly even iu front. Cleft of the mouth nearly horizontal, extending beyond the small eye. Lower jaw broad, U-shaped, the rami well separated. Between them a broad bony plate, with radiating stri»3, its posterior edge free. Jaws each with an outer series of conical teeth, behind which in the lower is a band of rasp-like teeth. Bands of small teeth on the vomer and pterygoids. Palatines with a series of larger, pointed teeth. Premaxillaries not pro- tractile. Tongue thick, scarcely free at tip. Nostrils well separated, the anterior with a short barbel. Suborbital very narrow. A bony plate covering the cheek, similar to the plates on the top of the head. Oper- culum with a broad dermal border. Branchiostegals 10-12. No pseu- dobrauchiae nor opercular gill. No spiracle. Gills 4, a slit behind the fourth. Gill membranes not connected, free from the isthmus. Two peculiar, long, lanceolate, obliquely striate appendages on each side of the isthmus, projecting backward and covered by the branchioste- gal rays, the, anterior wholly adnate to the isthmus, the posterior free behind.* Isthmus scaleless. Gill-rakers stoutish, very short. Scales of moderate size, rather firm, cycloid, with a membranaceous border. Lateral line present. Dorsal fin long and low, nearly uniform ; the posterior rays not much higher than the others ; its insertion in front of the middle line of the body, opposite the end of the pectoral. Tail somewhat heterocercal (more so in the young), convex behind. No fulcra. Anal fin short and low. Pectoral and ventral fins short and rounded, the ventrals nearer anal than pectorals. Vertebra arnphicce- lian, as usual among fishes. Abdominal and caudal parts of the ver- tebral column subequal. Air-bladder cellular, bifid in front, lung-like, connected by a glottis with the pharynx, and capable of assisting in respiration. Stomach with a blind sac 5 no pyloric ccsca. No closed oviduct. Intestine with a rudimentary spiral valve. Fresh waters of the United States. A single species known. * See Wilder "On the Serrated Appendages of the Throat of Amia," Proc. Ainer. Assoc. Adv. Sci. 1876, 259, for a discussion of these curious organs. 94 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 51.— AJIIA Linnaeus. Boic-Jins. (Amiattts Rafmesque.) (Linn. S\-t. Nat. i-.l. xii, ITt'.il: type Amiacalra L.) Characters of tin- -mus included above. («/«'«, ancient name of some Jisli. probably the bonito, Sarda m«lif< rrdnea; said to be from a, priva- tive, and •:••. (inc. the lish living in schools.) §3. A. ca!v:i L. — Mud-ji*h ; Dog-fish; Bow-fin ; Grindlc; "John A. Grindle" ; Lawyer Dark olive or blackish above, paler below; sides with traces of dark reiiciilate markings; lower jaw and gular plate often with round blackish spots. Fins mostly dark, somewhat mottled. Male with a round black spot at base of caudal above, this surrounded by an orange or yellowish shade. In the female tli is spot is wanting. Lateral line nearly median, directed slightly upward at each (Mid. D. -IS (4li-r>3) ; A. in-U; V. 7 ; Lat. 1. <17 ((5.V70). Head 3% in length; depth -1 to 4A. Male about 18 inches in length ; female 24 or more. Gront Lakes and slavish waters from Minnesota to Virginia, Florida, and Texas ; abund- ant. A voracious lish of remarkable, tenacity of life. The flesh is pecu- liarly soil and pasty, and is of no value for food. I. on. Syst. Nat. J (Siinlhcr, vii. :!-J.">: .'I tnin inrUii-tiuda Richardson, Fauna Bor.-Amer. iii, 2:>(i ( $ ): Amia oct-idt-ntaH* lick;iy, New York Fauna, Fish. '2159.) • SUBCLASS PHYSOSTOMI. (The Koft-raycti Fishes.) Skeleton bony. A'cntral fins (if ]iresent ) abdominal, with the basal aicnts riidiineiital. Parietal bones usually united. Air Madder (if present) connected by an air-duct with the (esophagus. Scales mostly c\doid. Lateral line usually running low. Parietal bones usually united. PrflBCOracoid generally ]>resent. Kays of lins all soft and artic- ulated, except occasionally one or two of the anterior rays of any iin, which nia\ he spinoiis. Lateral margins of upper jaw usn. illy formed by the maxillaries. I'ectoral tin placed low, generally near the ventral line. This group correspond^ essentially to the Malacoptcri Abdominalcs of dilVerent auth(»rs, the (\i/,'l<>;,l, i of Professor Agassiz. Although the typical members of this group dill'er in many ways from the more special- NEMATOGNATHI. 95 ized Physoclistous Teliosts, yet all the subordinate characters disappear as we approach the point of union of the two groups, leaving only the presence of the air-duct as the ultimate distinctive character of the Physostomi. In view of this inosculation of the two groups, many writers (following Professor Gill) have united them both into one order, Teleocefhali, after the exclusion of various aberrant members of each. The retention, in some form, of groups emphasizing the difference be- tween the spinous and the soft-rayed fishes seems to us very convenient. (Order Fhysostomi Giiuther, v-viii.) A. Pnecoracoid arch present. B. Syinplectic bone none ; pterotic simple ; anterior vertebrae with ossicula audi- tus ; supraoccipital and parietals co-ossified; maxillary imperfect, forming the base of a barbel; no suboperculuiii.. NEMATOGNATHI, K. BB. Symplectic bone present. C. Anterior vertebrae co-ossified and with ossicula auditns. PLECTOSPONDYLI, L. CC. Anterior vertebrae similar, distinct, without ossicula auditus. ISOSPONDYLI, M. AA. Proecoracoid arch none. D. Scapular arch suspended to cranium ; a symplectic bone ; pterotic and anterior vertebras simple ; parietals separated by supraoccipital. HAPLOMI, N. DD. Scapular arch free behind the cranium; parietals in contact; no symplectic; maxillary bone lost or connate ENCHELYCEPHALI, O. OEDEB K.— NEMATOGNATHI. (The Cat-fishes.) Parietals and supraoccipital confluent. Four anterior vertebra co- ossified, and with ossicula auditus. No mesopterygiuin. Basis crauii and pterotic bone simple ; no coronoid bone. Third superior pharyn- geal bone wanting, or small and resting on the fourth ; second directed backwards. One or two pairs of basal brauchihyals '; two pairs brauchi- hyals. Suboperculum wanting. Premaxillary forming mouth border above. Interclavicles present. No scales. Skin naked or with bony plates. " This division is the nearest ally to the sturgeons (Chondrostei) among Physostoinous fishes, and I imagine that future discoveries will prove that it has been derived from that division by descent. In the same * After Cope, Trans. Ainer. Phil. Soc. 1870, 452. 96 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. way the lM»pondylous fishes are nearest the Halccomorplu, and have probably descended from some Crossopterygian, near the Haplistia, through that order. The ailiuity of the cat-fishes to the sturgeons is ii in the absence of symplectic, the rudimental maxillary bone, and, tua i.l served by Parker, in the interclavicles. There is a superficial resemblance in the dermal bones." (Cope. 1. c., 454.) • This group comprises the Siluridcc and their relatives, now divided into several families by Professor Gill. ( ^trr<>i>t< r are not continent with the skin of the isthmus, their 29. SILURIDJ5 — NOTURUS. 07 posterior margins always free, even if they are united with each other. Whenever a nasal barbel is present it belongs to the posterior nostril." (Sihtriihc- part Giinther, v, 30-65, 69-220: Heteroptercc, Proteroptercc, aud Stcno- trancMce.) * Anterior and posterior nostrils remote from each other, the posterior provided wiih a barbel ; voiner and palatines toothless ; barbels 8. (Icta- lurincB.) a. Adipose fin keel-like, adnate to the back; supraoccipital bone free behind. NOTURUS, 52. aa. Adipose fin with its posterior margin free. 6. Premaxillaxy band of teeth with a lateral backward extension on each side PILODICTIS, 53. 6Z). Premaxillary band of teeth truncate behind. c. Caudal not forked. d. Eyes concealed beneath the skin GRONIAS, 54. < dd. Eyes normal AMIUUTJS, 55. cc. Caudal forked ICTALURUS, 56. ** Anterior and posterior nostrils close together, neither with a barbel, the posterior with a valve ; teeth on the palate. (Ariince.) e. Lower jaw with 4 barbels ARIUS, 57. ee. Lower jaw with 2 barbels ^ELURICHTHYS, 58. 52.— .NOTURUS Eafmesque. Stone Cats. (Not tints Raf. Amor. Month. Mag. and Crit. Eev. iv, Nov. 1818, 41 : type Nolurus fiai-ns Eafiuesque.) Body more or less elongate, anteriorly subcylimlrical, thence more or less compressed. Head above ovate and depressed. Skin very thick, entirely concealing the bones. Supraoccipital entirely free from the head of the second interspiual. Eyes small. Month anterior, rather large, the upper jaw usually more or less projecting beyond the lower. Teeth subulate, closely aggregated in a broad band in each jaw, which in the lower one is interrupted by a linear interval and in the upper one is continuous. The band in the upper jaw is either abruptly truncated at each end (subgenus tichilbenclcs) or prolonged backward by a contin- uation from the postero-external angle (subgenus Notunw). Branchios- tegals 9. Dorsal fin situated over the posterior half of the interval between the pectoral and ventral fins, with a short, sharp spine and 7 branched rays. Adipose fin long aud low, more or less connected with the accessory rays of the caudal fin, not free posteriorly, but ad- nate to the body ; the membrane sometimes high and continuous, some- times notched. Caudal fin very obliquely truncated or rounded, in- serted on an equally obliquely rounded base. Bays rapidly decreasing in length iuferiorly ; numerous rudimentary ones present, both above Bull. Nat, Mus. No. 10 7 98 coxTRir.rrr'vs IETB AMKIIICAX ICHTHYOLOGY — iv. ;ui(l below the caudal peduncle. Anal I'm comparatively short, and rap- idl\ Jin-ravin- in height lor I lie lirsl liall'ol' its length : it lias IL'-L'D* rays. Yeiilrals rounded, and each has 1 simple and S branched rays. Pec- :l tins with a sharp spine, of dilleivnt forms in the different species. Vent at >ome distance in advance of the anal. Lateral line c ..... plete. In or aliove the a\il of the ]iec;oral tins is an orifice, \vhich is the open- ing of the duct of a poison "land. u From it may frequently be drawn a solid uelat iii'ius style ending in a tripod, each limb of \vhich is dichoto- mon>ly divided into short branches of regular len^ih." (Cope.) Si/e small. Fresh \vaters of the United States. (vwro?, back; of>(»«, tail ; "means tail over the back", ' I'rcniaxillary hand of teeth without lateral l»:i:'k\v:inl processes. Bleeker.) • 1'. •< -roral spin.- en! ire or grooved In-hind; adipose fin high and coutiiiuous with I In' caudal. a. IVctoral spine aoout half the length of the head. 81. N. ffyrinus(Mitchill)Kaf. Nearly»uniform yellowish brown, .sometimes blackish, without trans- verse blotches: ;i narrow dark lateral streak and one or more dorsal ones. liody com]»aratively short and thick. Head lan;e, its width ^£- 1 in length of body ; depth 4—V,; head .'5.1— i. Spines stout and raiher Ion- ; that of the pectoral lin straight, grooved behind, i'.1, in the distance from snout to dorsal tin. Dorsal higher than lon.^. inserted nearer anal than snout. Anal ]'.\. ,Iaws nearly equal. I lumeral jn-ocess short. L. ."• inch.-. \cw York, entire Mississippi Valley, and Upper Lake region; rather common. rinw Mitchill, AMUT. Month. Mag. 1-1 -, :'.'JJ : .Ionian, Bull. U. S. Nat. ^. .. L02: A'er jaw much ])r<)jectin^. Spine- very short and slender; that of the dorsal not one-third the height Of the fin J all less than one third the length of the head; that of i he pectoral ret rorsely serrate on the outer ed-e, cut ire within. Head I . in bod\ : ilsuidili 5J| depth :,\; distance to dorsal L",: pectoral spine ! :!,,• :iccunnt ol'iliis laini l\ I lie ni.linient ai \ ra\sa1 the front of I he anal an- included in the enumeration. [chthyologiffl An-hipelagi Indici I'n.ilroaiiiN. i.'Silnri, 'JfvS : type Silitrits -<;y. Dorsal scarcely higher than long. Distance i'roni snout ;o dorsal about '•'> in length. Pectoral si)inc 3.]— 1 in this distance; dorsal spine low, as near snout as anal. Anal rays 14-17. Humeral process obscure. L. 4 inches. Wisconsin to Missouri and Kansas. Bon, r.nll. 111. Mus. Nat. Hist. 1-7C.. f.l; Jordan, 1. c. 100.) SO. IV. iaasajjEiBS (Kieh.) Gill & Jordan. < ;• dark brown, soaiev.hat mottled, fins all dark-edited. Body ii.^ate. Pectoral sjiine retrorse-serrate without, weakly ser- rate within. Head very broad, tlat, and thin, upper jaw projecting; head about I' in length, depth 6. Dorsal fin one-fourth higher than long. Distance from snout to dorsal about L'1,5 in length. Length of pec- tor.d s]»ine L>:,! in same distance. Dorsal much nearer anal than snout. Anal rays IC-L'lt. Humeral process conspicuous, sharp. Size large; n-.iehes the length of nearly a foot. Pennsylvania to South Carolina,; CllilllllOll. % liirlianlson. Fauna I5or.-Anirr. iii, :">'J. 18IW, l>ascd on I'imc.lode IIIT, \ .• •- , in . M. in. MIIS. v. 1 ."..">: Pimelodua lemniscatua C. & \'. \\.lll: .VI'/.-I/-H.X(»TI- ii!ii-r. v, lO.'i : \,,lin-iix iniii-'jiiintiix (llaird) Copi', Journ. Acad. Nat. Sci. I'lii: : Jordan, l. o. KID.) • illiiry liand of li-,-tli \villi lateral liael^wanl jn-occsses. as in U.S.) 5)1>. 1\. (l:ivcis l.'.if. -Stone-oat. <'olor ne;iily nnilbrm yellowish brown, so;ae( imes blackish above, lins yellow nl-'d. I'ody elongate. Head depressed, broad and tlat. nearly broad as long. .Middle region of body subcylindrical. 'i'ail com- pFCfi -d. Head ;d-oiit I1 in lenglh: width of head .Y\ ; depth ;Yr; in le!i-tli. 1 h-tance to dorsal about ;', in length. Barbels short. A strong keel "ii bark lieliiinl dorsal, leading to adipose tin ; adipose lin deejily l. Dor-al spine \ci-y .sliort. I'eetoral spine ret rorsely serrate in 29. SILURID^E — PILODICTIS. 101 front, slightly rough or nearly entire behind ; its length 3 times in dis- tance from snout to dorsal. Anal rays about 16. Humeral process very short and sharp. Size very large; reaches a length of more than a foot. Vermont to Virginia, Nebraska, and Texas ; rather common. (Eafinesqnu, Amer. Mouth. Mag. 1818, 41 ; Giintlier, v, 101 ; Jordan, 1. c. 99 : Nota- ni* occidcntaUs Gill, Proc. Bost. Soc. Nat. Hist. 1852, 45 : Noturus platycuphalus Giin- tlier, v, 104.) 53.— PILODICTIS Rafiuesque. Mud Cats. (Opladelus Eaf. 1820.) (Bafineaqne, Prodrome de soixante-dix nouveaux genres, etc., Journ. Phjs. Paris, 1819, 422 : type Pilodictis liinosus Eaf. = Silurus olivaris Eaf.) Body much elongated, very slender, much depressed, anteriorly broader than high. Head large, very wide and depressed, latterly expanded, above broadly ovate, and in profile cuneiform. Skin very thick, entirely concealing the skull. Supraoccipital bone entirely free from the head of the second iuterspinal. Eyes small. Mouth very large, anterior and transverse. The lower jaw always projects beyond the upper. Teeth in broad villiform bands on the intermaxillaries and dentaries. The iuteroiaxillary band is convex anteriorly, and proceeds to the insertion of the maxillaries, where it is abruptly angularly de- flected, and proceeds backward as an elongated triangular extension. The band at the symphysis is slightly divided, and anteriorly separated by a small triangular extension of the labial membrane. The lower band of teeth is anteriorly semicircular and attenuated to the corners of the mouth. There are about 12 branchiostegal rays on each side. The dorsal fin is situated over the posterior half of the interval between the pectorals and ventrals, and has a spine and about 7 branched rays. The spine is rather small, and more or less enveloped in the thick skin. The adipose fin is large, and has an elongated base resting over the pos- terior half of the anal ; it is very obese and inclines rapidly backward ; it is rather less free posteriorly than in Amiurus. The anal fin is small ; it commences far behind the anus, is a little longer than high, and is composed of about 13 rays. The caudal fin is oblong, subtruncated, placed on a vertical basis, and with numerous accessory simple rays, recurrent above and beneath the caudal peduncle. The pectorals have a broad compressed spine, serrated or dentated on its external and in- ternal margins, and with a prolonged fleshy integument obliquely striated. The ventrals are rounded and have 9 rays, 1 simple and 8 branched. One species known, (-s/o?, mud; ty^us, fish.) 1 roMKII'.niMXs TO NORTH AMERICAN ICHTHYOLOGY - IV. 91. P. Oil VariS (Rof.) Gill & Jordan. — HuJ t'nt; Y,:ll'«.•,•,'«/«•: donjon. Mottled brown ami yellowish. tin- latter color often predominant ; whitish lidow. Body \ery long, slender, depressed forwards, closely coinprcssed behind, tin- liead extremely Hat, the lower ja\v the longer. Barbels short. Dorsal spine half the height of the fin. Caudal slightly cmariiinate. Anal tin short, its base about one-sixth the length, its rays li'-l.'i. numeral process short. Size very large, reaching a weight of .~iO-7."i pounds. i:ivers of the .Mississippi Valley ami Southern States; aliuiidani in deep, sluggish waters. A fish of unprepossessing appear- ance, although much used as food. V/JI/-I/N alinirix K'at'. Anu-r. Month. Ma.u;. 1*H, I?."): Iliif,hidflitn uUrurix (Jill, Ichth. ( ':ipt. Simpson's Kx[>l. l^Tti, 4'2(J : Pelodiohlhys olivaris Jordan, I.e. 95: Pimelodus punc- tulutiini Jiinilicr, v, I'll : I'inu-lvduit litnonus Kaf. IcUth. Oh. G7 : Piiiielodtut aineua C. &, V. xv, 135.) 54.— GRONIAS Cope. Blind C«/N. (Cop' . I'roc. Ai-ad. Nat. Sri. Phila. 16(i4, 231: type Gronian nigrilabrii Cape.) This ge.ius agrees with Amiio-ns in all respects, except that the eyes are rudimentary and covered by the thick skin. The single species is probably descended from some A inin nis of the type of nu-hts, modified in accordance \\ ith its subterranean life, (rp^rj, a cavern.) I)-.*. 4i. iii^ridabris Cope. lllaek al>o\e : jaws and fins black; sides varied with yellowish ; belly ]>ale. Eyes more or less rudimentary and concealed beneath the skin. -laws eipial. ^lu/./le Hat. Dorsal spine midway bet weeu snout and mid- dle of adipose I'm. Barbels short. Caudal slightly emargiiiate. Anal with is rays. Branchiostegals 10. Cave streams (Conestoga Kiver), :«TII Pennsylvania. (Cop.', I'lf. Ai-a.l. Nai. S.-i. 1'liila. 18ri4, 231 : .tmiurit* nigrilttbr>n Jordan, 1. c.9:2.) 55.— AWIURUS Riilinrs^iie. Cat-fishes. ilim-^iii.-, [i-liili. ( ili. 1-Jii. ti:,: type Kit urn* cnpn-im R:if. — PlnH-loihitiinitalvs I .. ^in-ill . i P,od\ moderately elongated, robust, anteriorly vertically ovate and scarcely co]npi-cS'wnaaCH« Jordan. — Green Mud Cat. Clear olive-brown, more distinctly greenish than other cat-fishes ; a blackish horizontal bar at base of dorsal. Body extremely elongate ; anteriorly nearly terete. Head low, flat, and broad, upper jaw very strongly projecting. Dorsal fin very high, two-thirds length of head, its spine nearer snout than adipose fin ; depth 5i in length. Head 3£; its width 4-, base of anal 6; anal rays 16-18. Caudal slightly emargi- nate. Young much less elongate. L. 18 inches; slenderest of the Amiuri. Abundant in the streams of South Carolina and Eastern Georgia (Santee to the Chattahoochee). (Jordan, Ann. Lye. Nat. Hist. N. Y. 1877, 3K6; Jordan, 1. c. 93 ; Jordan & Brayton, Bull. U. S. Nat. Mus. xii, 28.) aa. Anal fin moderate, its rays 19-22. c. Lower jaw not projecting beyond upper. 94. A. platycephaHus (Grd.) Gill. Olivaceous, somewhat marbled, a black horizontal bar at base of dor- sal. Head broad and flat, nearly as wide as long. Mouth very wide, the jaws about equal. Dorsal spine nearer snout than adipose fin. B. 11 ; A. 20-22, the base of the fin 4^-5 in length. K"orth Carolina to Ill I CONTRIBUTIONS TO M»KTir AMF.IMCAX ICHTHYOLOGY — IV. < ,.i: rathercommon. Etcsembles J.. 6rttnw«tw, bui less slender and \s nli ;i different month. (/• Grirard, 1'n.,-. A. -;itl. N:it. Sri. I'hila. l-.VJ, 1GI; Jordan, 1. c. '. \. Kantboccpbalns (Raf.) < 'hieti\ uniform yellowish brown, ol'tcn rather pale. Head about as broad ;!s Imi-. I in length. Dorsal spine nearer adipose tin than snout. it> raj > usually 11) (18-L'O). ."Month very broad. I5ody short and stout. l'.arbel> Miorter than head. Humeral process very short, covered by skin. Si/.e small. ( )hio Valley. Munu xanthocephalus lial'. c^uart. Journ. Sci. Lit. Arts, Loml. 18-JO, 51 ; Jordan, 1. o. 9<». A. nieBns (Raf.) Junlaii A; Color almost blaelc. I'.ody very stout, short, and deep, the depth .'H to ! \ in leii-th. Head broad behind, rather contracted forward, the front steeply elevated. Anal liu short and deep, of 17-19 rays, its base nearly "• in length, the color of the rays forming a sharp contrast with that of the dusky membranes. Jaws nearly equal, llarbels longer than head. Humeral process rather long, rugose. Size small. Missis- sippi Valley to Ne\v York ; eonimou. ./(;r;».v ni'l"^ I.':.!', i^iart. Joiini. Sri. I^it. Arts, Loml. 1s-,1! I, ."1: I'i>»< ln.lu .v cuttilitx I. -lilli. I". S. 1'ar. !;. K\ Surv. 1858,208: rimi-l<«litx <-.»«// //^ tinl. 1'ror. A.'ad. Nat 1'liila. 1-.".:'. I.V.I: AIII'IIH-II* oIxxiivGin, Pror. l!o.-,t. Sor. \ai. Ilipine more than half h-n-'th of head. Dorsal spine nearer adipose tin than snout. I'.arbels Ion-. Uraiichi.-ste-'als 10. Ilc-'d:!! in len-t!i. Anal L'l. L. !."» inches. Southern Illinois to Florida. IVrhapsa \ariely ot I . cittltx. P mnr.itn* II<,ll.r,.«,k, Jdinii. \ t . Sri. I'hila. I -."-.: t : .Ionian, 1. .-. \- - (Jill.— /;«//-/., ,;,/; tl,,r,i,,l I:,,,' ; Small C,-t-fixli ; Xrini-jlL-ill Cat: Color dark \ .-II >v, i ,|i brown, more or less clouded, sometimes yellow- i-h. BOmetimea nearly black. P.ody rather elo:i-a!e; depth -\-\.\ in I'-'i-'li. Anal tin usually with L'l or L'L' rays, its ba-e 1 in body. I )or- •s:'l "" UWerted rather neaivr adipose (in than end of snout. Tpperjaw n-n.ill\ divtinetlv loa-erthan lower. Humeral pi -ocess. nim-c than half 29. SILURID.E - AMIURUS. 105 the length of pectoral spine. L. 18 inches. Great Lakes, Ohio Valley, and eastward. The common bull-head or horned pout of the North and East, abundant in every pond and stream ; also introduced into the rivers of California, where it has rapidly multiplied. (1 Silurus catiiy Linn. Syst. Nat. x, 3U5, 1758: Pimelodus nelulosus Le Sueur, M<5m. Mils, v, 149, 1819 : Pimelodus atrarius DeKay, New York Fauna, Fish. 1842, 185 ; Jor- dan, 1. c. 90.) cr.. Lower jaw projecting beyond upper. • 99. A. VMBgraB'is (Thompson) Nelson. Dark reddish brown or blackish. Body moderately elongate j depth 4J-5 in length. Head 3i-4. Barbel long. Month wide. Head longer than broad, rather narrowed forward. Profile rather steep, pretty evenly convex.. Dorsal region more or less elevated. Lower jaw strongly pro- jecting. Anal rays 20. L. 18 inches. Vermont to Minnesota and south- ward ; rather common. (Pimelodus vulgaris Thompson, Hist. Vermont, 1842, 138: Pimelodus dckayi Girard, Proc. Acad. Nat. Sci. Phila. 1859, 1GO : Pimelodus ailurus Girard, U. S. Pac. E. E. Expl. Fish. 1858, 210; Jordan, 1. c. 88.) aaa. Anal fin long, of 24-27 rays, its base more than one-fourth the length. d. Head broo.d ; mouth wide. A. mq-taflis (Lo Sueur) Jordan. — Yellow Cat. Yellowish, greenish, or blackish. Body more or less short and chubby, sometimes extremely obese (var. natalis), sometimes more elongate (var. lividus). Head short and broad. Mouth wide, the jaws equal (var. livi- dus) or the upper jaw longest (var cupreus). Anal rays 24-27. Great Lake region to Virginia and Texas ; generally abundant. Extremely variable, and running into several varieties.* (Pimelodus tiatalis Le Sueur, Me"m. Mus. v, 154, 1819 ; Glinther, v, 101 ; Jordan, 1. c. 88: Silurus lividus Rafiuesque, Ichth. Oh. 1820, C'5: Pimelodus felinus et anlonitmsis Grd. U. S. Pac. E. R. Expl. x, 209, 291 : Pimelodus catus, atpreus, et cnprcoides Grd. Proc. Acad. Nat. Sci. Phila. 1859, 159, 160 : Pimelodus coenosus Richardson, Fauna Bor.-Amer. iii, 132: Pimelodus cupreus Raf. Ichth. Oh. 1820,05.) dd. Head elongate ; mouth narrow. 1O1. A- ereEseraEiiius Jordan. Color black ; belly paler ; fins and barbels black. Body rather elon- • gate, compressed, the depth about 4^ in length. Dorsal region rather elevated; the head quite long and narrowed forward, 4 times in length of body. Head more narrowed than in any of the other spe- cies. Width of the head in front of the eye but little more than half its length. Width of the mouth about half the length of the head. * For a discussion of which see Jordan, Bull. U. N. Nat. Mus. x, 80. 106 C"M KIKTTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. Greatest width of the head contained about 1£ times in its length. Dorsal nit slight 1\ nearer the snout than the adipose lin, unusually high, ii^ >]»iue 1« ng, as in the species of Jchiltirux. Pectoral spine very strung. about h.-.'ll'as long as the head. Anal lin long, deep, nearly one- third the Icnuih of the body, and composed of - 1 rays. Adipose fin. large, ('amid lin rather short, truncate behind. Jaws equal. Supra- occipital bone hut little free behind. Branchial apertures rather more restricted than usual. Kesembles I. htvitxtris, but with the truncate caudal of .1. )ntt rays; it commences near the vent. Ventral tins each with 1 simple and 7 branched rays. Pectoral lins each with a stout spine, retrorse-senate within, and about 1> branched rays. Caudal lin elon-aled and deeply forked, with the lobes pointed, the upper fre- <|iientl\ the loii-er. Coloration silvery. Fresh waters of North Amer- ica, one species southward to Criialemala;* one in Western Mexico. t •/. Buridfamolto (Gttnther) Jotdan. Allied \,> I. /»m//,/.v, hut ii,,- .-niiil .-liort.T. <|.|.lli :. in Irn-ih. \. 28 -J'.i. 1,'i.. l"siiiii;icinl;i, Guatemala, (.liniiii-n.i l.illllll.T, V. |l'. '/ •'•"" " B«an)J. A <;. <'li».>i-]y allii-.l to I. HlhitliiH, l.iit \villi a uari-durrhi-ad (its \\idili :. in Ini-lln ; iln- \\ iiltli ..f tin- |nvniasillar\ Land i.f tn-(li alidiil ..nc-l liird Hi.- !• in:'), "f ili.- lii-ail : liniii.-ral process sli-lnly rurruwcd, not strongly ni^nsc as in/. ""'•" ' «"dal dr.'|d\ !'i>ik.-d. Color plumbeous, silvrry b,-]o\v. B. 8 J D. I,C>; A. -I • I'- I- - Kiu Tnrbio. i;ii."iiajuaio. Mi-\ii-,, (\M-:,I of thr Siriia Madiv). (.liniitrua i IJ.-aii, l'i... I 3, Nal. Mu>. 11. 304j l~7'.i.) 29. SILURID^G — ICTALURUS. 107 u-, fish; atAoupos, cat; hence more correctly, though less euphonious- ly, Iclithcclurus.) &,. Bony bridge from occiput to dorsal not quite continuous. b. Anal tin moderate, of 20-22 rays. 102. I. lopliiiis (Cope) J. &G. Pale olive-bluish, silvery below. Body rather stout. Head very broad, about as wide as long, its width 3% in length of the body. Eye 5-6 in iuterorbital width. Caudal not deeply forked. Upper jaw not much the longer. Mouth wider than in any other cat-fish. Humeral pro- cess stout, shortish, somewhat rugose. Anal rays 21 ; base of anal 6 in length. L. 24 inches. Streams about Chesapeake Bay. (Amiurus lopliius Cope, Proc. Arner. Phil. Soc. 1870, 48(3 : Amiurus lopMus Jordan, 1. c. 85.) 103. I. albidus (Le Sueur) J. & G.— White-Cat; Channel Cat of the Potomac. Pale olive-bluish, silvery below. Body moderately stout. Head longer than wide, its width 4-6 times in length. Mouth rather narrow. Upper jaw much the longer. Eye 3-5 in interorbital width. Barbels long, except nasal barbel. Caudal fin deeply forked, the upper lobe the longer. Humeral process more than half the length of the spine, extremely rugose. Anal rays 21 ; base of anal 4£-5 in length. Dorsal fin nearly midway between adipose fin and snout. L. 18 inches. Pennsylvania to North Carolina. (Pimelodus albidus Le Sueur, Me'm. Mus. v, 148, 1819 : Pimelodus lynx Girard, Proc. Acad. Nat. Sci. Phila. 1859, 160: Amiurus albidus Jordan, 1. c. 84.) Ib. Anal fin long, of 23-27 rays. 104. I. lupus (Grd.) J. & G. Dusky olivaceous, sides silvery. Body rather slender. Head narrow, 0 longer than broad, its width 4| in length, being less than its length above. Dorsal spine much nearer snout than adipose fin. Base of anal as long as head. Anal 23. Pectoral spines long and slender, dentate. Barbels long. Supraoccipital bone almost meeting the interspinal ; its relations therefore very close to Ictalurus punctatus. Streams of Texas. (Pimelodus lupus Grd. U. S. Pac. R. R. Expl. x, 211 : Amiurus lupus Jordan, 1. c. 83 : Amiurus lupus Giiuther, v, 101.) 105. I. niveiveutris (Cope) J. & G. Similar to I. lupus, but the head broader, its width equal to its length above. Dorsal spine scarcely nearer snout than adipose fin. Anal 24, shorter than head. Barbel longer than head 5 humeral process very rugose. Keuse River, North Carolina, (Amiurus niveivcntris Cope, Proc. Amer. Phil. Soc. 1870, 486 : Amiurus niveiventris Jor- dan, 1. c. 83.) 108 coNTKir.! Ti<»\s TI» NOIITII AMERICAN ICHTHYOLOGY — iv. 1OG. I. !:: l*\ \Vallianm .1. A ('',.— Cat -fifh oflhe Lakes; Great Fork- toiled Cat; .;//h. 135: fAinliiniH biirmU^ (iiint her, v, lilO: J'itntlodns >i'njri- ctnifi I,i- Siiriir, Mc'ni. Mus. v, 1")3, Ibli): Amiurua nitjricany Jordau, 1. e. K'>: Annurus lii>i;«a:dca'ostis (Bean) J. & G. — Great Cat-fish. IIIiiNi slate altove, whitish below. Form of L Jnciinfrin, but the bod\ deeper and the head and mouth broader. Greatest depth .'U in leu-Hi. Mead:;;-; its widl li 1 '•. Dorsal nearer snout than adipose I'm. <'audal I'm not deeply forked. 1'. 1,11; A. .'Jo. (Urdu.) i\Iississip])i h'ivei (S.iint Louis). I'robiddy the largest ol' the cat tishes, the original t\pe ."• li-ci in length and \\ci-hin- l.'.it pounds. ''Him* i><> mil* ,-i. I1:...-, r. s. Nat. Mus. ii. '>:'., 1S79.) (in. I'.niix liridx'1 liiiiii nccijiiit In clnrsal (in coniplcir ami rnnl iiiiinu--. '.'l ::n, its hasr :; L- 1 'm Im^ih ill' Ixi. ly. ION. I. pu:i«'f:HHs f KaC. > .lor. -r//,///H,7 c,,i; ll'liita Cat. Color li-ht oli\aceoiis ;iho\r, the sides pale or silvery, and almost alw:i\s with irregular small, round, dark spots. Fins often with dark ftdgingS. I '.ndy rather Ion-- ;md slender, the, back little elevated. Head rather small, narrow, convex above, so that tlie eye is little 29. SILUR1D/E AEIUS. 109 nearer the upper than the lower outline. Eye large, the middle point of the length of the head being near its posterior margin. Mouth rather small. Barbels long. Spines long. Skin thin, Humeral pro- cess long and slender, more than half the length of the pectoral spine, which is strongly serrated behind. Head 4; depth 5. Anal 25-29. Bivers of the Southern and Western States, from Montana to Ver- mont, Mexico, and Georgia ; generally abundant in the channels of the larger streams. It reaches a weight of 20-25 pounds. Variable. (Silurus punctatus Raf. Amer. Month. Mag. 1818, 359; Jordan, 1. c. 76: Pimelodus ccerulescens Raf. Iclith. Oh. G3: Pimelodus caudafurcatus Le Sueur, Me"m. Mus. v, 152: Amiurus caudafurcatus Giiiither, v, 102 : Pimelodus furcifer, gracilis, vulpes, olivaceus, lioughi, megalops, graciosus, hammondi, notatus, etc. Auct. : Ictalurus beadlei and siw.p- soni Gill: Iclithaslurus robustus Jordan, 1. c. 7G.) dd. Anal fin very long, its rays 32-34. 1O9. I. fnrcatus (Guv. & Val.) Gill. Color silvery, plain or somewhat spotted. Anal fin extremely elon- gate, its base nearly one-third the length of the body (without caudal); its rays 32-34 in number. Eye small, wholly anterior, the middle of the head being entirely behind its posterior margin. Head small, about 4£ in length ; depth 4 in adults to 5£ in younger specimens Slope from dorsal to snout somewhat concave, especially in adults. Pectoral spine rather long; humeral spine stout, shortish, not reaching middle of pectoral spine. Skin thin. Size rather small. Ohio to Iowa and Texas ; not very common. (Pimelodus furcatus Cuv. & Val. xv, 135, 1840 : Amiurus fnrcatus Guuther, v, 103 . Jordan, 1. c. 75.) 51?. — AKIU§ Cuvier & Valenciennes. Sea Cat-fisli. (Cuvier & Valenciennes, Hist. Nat. Poiss. xv, 53, 1840: type Pimelodus arius Buchanan,,) Body more or less elongate, subterete. Head subconical, armed with a bony shield above, behind which are usually two others, the posterior at the base of the dorsal spine. Skull with a fontauelle. Mouth not large, the upper jaw the longer. Teeth villiform or granular, in a band in each jaw. Teeth in one or two patches each on the vomer and pala- tines, all of them sometimes confluent into one band. Barbels 6 (the nostrils without barbel), close together, the posterior with a valve. Eyes with a free orbital margin. Dorsal fin short, in front of the ven- trals, with a pungent spine and 7 rays. Adipose fin well developed, posteriorly free. Caudal fin deeply forked. Anal fin short. Pectorals • each with a spine. Ventral rays 6. Skin smooth, naked, except on the 110 mxTKir.rnoNs TO NORTH AMKRICAX ICHTHYOLOGY — iv. ..ccipital and imrliul re-ions, which are armed with bony bucklers. Marine cat iMies. Species \epy numerous in the tropical seas. This • up has been divided into many genera, 1 lie value of which we are unable in determine. Our coniiiioii species is not a typical Ari/is. l»nt the -.•mis to which it belongs has not been properly < Id hied. (From Art , tin- IJen.ualese name of the typical species.) Ti-i-ili ;ill \ illit'orm. in :i lar^c- r<>unclly silvery. Body ratlier elongate, not com- pressed, tapering .nto the slender tail. Head subconic, de])ressed, tlat- tisli above. Maxillary barbel nearly as long as the head. Mouth small. Eye moderate, just iu front of the middle of the head. Gill membranes broadly united, partly joined to the isthmus, forming a narrow, free fold across it. A small, bony, granulated buckler, broader than long, in front of base of dorsal spine; then a much larger nuchal shield with a me- dian keel, and a still larger occipital shield with a median furrow. A lo\v llesliy keel along the back. Humeral process nearly half the length of the pectoral spine. Caudal deeply forked, the upper lobe the longer. Head :: ; : depth 5. D. I, 7, its spine not filamentous, serrate in front; I'. I,»i; A. 1(5. L. L'l inches. Cape Cod to Florida; common south- ward. luniH filis Linnc", Syst. Nat.: Arias miUx-rti Cuv. tV Val. xv. 74: Ar'nt* n i, \ , ir,r>.) 111. A. «M|ii«"»l:-js l;.iin] A (iirard. Similar, lnit with the spines higher and the maxillary barbels much loimei, reaching to the middle of the pectorals. 1'ectorals reaching to !;i-t ra\ of dorsal. Dentition and character of the cephalic bucklers nndesciibed. Head 1. 1). I, 7; A. 1«5: I'. I, 0. Coast of Texas; a doubtful .species. nl A liirar.l, I'n.r. Aca.l. Xal. S«-i. I'liila. !&%, 26 ; (iiiuth.T. v, 173.) .— i:i>I KD< III IIVS I'.air,! A Cut /is (. \ilitrii-litliti* l'.;iir.l A Ciiai.l, I'mr. A- -ail. Xat. Sci. I'liila. t-.'.l.'Ji'.: lypi- Silurim »ntri- M iicliill.) l'.od\ rather elongate, little compressed. Head depressed, broad abo\r. Month la r-e, the upper jaw (lie longer. Teeth all villilbrm; those on the \oiner and palatines Ibriuing a more or less perfectly crescent- • •t \,,t,,riiix (;ill,Proc. Aca.!•:. :'.!. ' J'.raill ea-e IM't produced het Ween (il'hits : h:isl> i lailii dollldc, somiM imes wit 11 1I1US- cnlar canal; -1 to 1 superior pharyn^eal hones; lower jiharyn.^eals not falci- fonn ; '•'• ha-.il hranehih\als; teet h iu jnw> ol'len piv-enl. ( ' V«/;-«eini.) FAMILY XXX.— CATOSTOMID^E. (The Suckers.) r.ody oblong or elongate, usually more or less compressed. Head more or less conoid. Opcrcles normally developed. Nostrils double. No barbels. Mouth large or small, usually protractile and with lleshy lips. Margin of upper jaw formed in the middle by the small preinax- illaries, and on the side by the inaxillaries. Jaws toothless. Lower pharyngeal bones falciform, armed with a row of numerous comb-like teeth, r.ranchiostegals 3. Gill membranes more or less united to the isthmus, restricting the gill-openings to the sides. Grills 4, a slit be- hind the fourth. Pseudobranchia3 present. Scales cycloid, large or small. Lateral line decurved, sometimes wanting. Head naked. Fins not scaly. Dorsal fin comparatively long (of 11-.">0 rays), without true spine. Anal I'm short. Caudal fin more or less forked. Ventrals ab- dominal, with about 10 rays. Pectoral tins placed low, without spine. No adipose tin. lielly not serrated. Alimentary canal long. Stomach simple. No pyloric cceca. Air-bladder large, divided into two or three parts by transverse constrictions, not surrounded by a bony capsule, (ienera 11 or fewer; species about CO ; inhabiting the fresh waters of N<>i ih America, two species in ICaslern Asia. They are not much valued lishes, the llcsh being liavmless and full of small bone-. -ioup r,it,isi"r-al I'm rlon^alc, its drvclopcil rays -jri-MMu iiiinihcr ; air-lihnlili-r in two parts. • I '..ntaiicll.' pn-s.-iit ; hoily OVftte : si-airs laryv. (JliiliiiiicliH.i/inil'.) l>. Month MM. iller, inferior, protractile downwards. il l>one> .siron^, (In- in-ill eoiMparatively eoarse ami lar^e. in- • i- i -in;,' in size ilowm\ anl> 15ru \ i.icn rm s, 60. I'liaryii'/eal l«ou. > narrow, \\ilh the teeth thin and weak . . ( ' \ Ki-n .in:s, (il. ii la lie lie- oldilerali-d by the Union of the parietal hones; hody elongate, (fijclcp- liii' d. Montli small, inferior, with thiek iiajiillose lips; scales rather small. L'YCLKPTL'S, 62. 30. CATOSTOMIDJE - ICTIOBUS. 113 ** Dorsal fin short, -with 10-18 rays. (Catostomince.) e. Air-bladder in two parts. /. Lateral Hue complete and continuous ; scales small, 55-115 in the lateral line. q. Fontanelle none ............................... PANTOSTEUS, 63. gg. Fontanelle present. h. Mouth inferior, small, with thick papillose lips. CATOSTOMUS, 64. Mi. Mouth very large, terminal, oblique ; lips thin and nearly smooth. t. Pharyugeal bones moderate, with teeth of medium size. CHASMISTES, 65. ii. Pharyngeal bones slender, with very numerous, minute teeth. LIPOMYZON, 66. ff. Lateral line interrupted or wanting; scales large (40-50 in a longi- tudinal series). g. Lateral line entirely wanting ..................... ERIMYZON, 67. gg. Lateral line more or less developed .............. MINYTREMA, 68. ee. Air-bladder in three parts ; fontanelle present ; scales large ; lateral line complete. j. Mouth normal, the lower lip entire or merely lobed. A;. Pharyngeal bones moderate, the teeth compressed, grad- ually larger downwards; mouth moderate or small, the lips usually plicate ...................... MOXOSTOMA, 69. fcfc. Pharyngeal bones very strong, with the lower teeth much enlarged, subcylindrical and truncate, the teeth of the upper part of the bone small and compressed ; mouth large, somewhat oblique, with very thick lips. PLACOPHARYNX, 70. jj. Mouth singular, the upper lip not protractile, greatly en- larged, the lower lip developed as two separate lobes, pharyugeal bones and teeth ordinary ---- QUASSILABIA, 71. 59.— ICTI©EIJ§ Eafinesque. Buffalo-fishes. (Rafinesque, Ichth. Oh. 1820, 55: type Amblodon "biibalm Eaf.) Head very large and strong, wide and deep ; its length 3£-3f in that of the body ; its upper surface broad and depressed. Eye moderate, wholly anterior in position, the middle of the head being entirely behind it; suborbital bones proportionately harrow. Fontanelle large, well open. Opercular apparatus largely developed; the suboperculum broad ; the operculum broad, strongly furrowed. Mouth very large for a sucker, terminal, protractile forwards; the middle of the premaxillaries nearly on the line ot the middle of the eye ; the posterior edge of the maxil- lary extending about to the line of the nostrils. Mandible very strong, oblique, placed at an angle of 45° or more when the mouth is closed, its posterior end extending to beyond opposite the front of the eye, its length a little less than one-third that of the head. Lips very little de- veloped ; the upper narrow and smooth, scarcely appreciable ; the lower narrow, rather full on the sides, but reduced to a narrow rim in front, Bull. Nat. Mus. No. 1G - 8 114 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. entirely destitute both of papilla} and plicoe. Jaws -without cartilagi- noussheath. Mnciferous system of head well developed. Isthmus nar- row. I'haryngeal bones rather weak, the outer surface of the arch standing outwards and presenting a porous outer margin. The peduu- ele i>r the symplivsis is much longer proportionally and more pointed than in ('ttri>io<1(is and Bubal ichtliyx. The teeth are very numerous, small, thin, and eompressed as in Carpiodcs, but the lower ones are gradually larger than the upper ones. Their inner edge is slanting outwards, and not uniformly arched as in Bubal uJithys, or truncate as in Cydcptim, the innermost margin rising somewhat in the shape of a projecting cusp. Gill rakers of anterior arch long and slender above, becoming shorter downwards. Body heavy, robust, not especially arched above nor greatly compressed, the form somewhat elliptical; the depth 24-3} in the length of the body. Scales large, thick, nearly equal over the body, their posterior edges somewhat serrate; the lateral line well developed, but not as distinct as in Car)>!t> -.';(>: anterior rays somewhat elevated, their length about half that of the base of the fin. Caudal not much forked. Anal (in not much elevated, its rays about 9 in number. Pectorals and ventrals moderate, t he latter wit h about 10 rays. Sexual peculiarities, if any, un- known. Coloration dark, not silvery. Air-bladder with two chambers. Si/e very large. A single species known. (l/Obs, fish; ,%D~, buffalo.) 113. I. t>ii9>a!llis (Raf.) Ag. — Red-moutli Buffalo-fish. P.ody robust, moderately compressed, the outline somewhat elliptical, but the hack rather more curvet 1 than the belly; depth 24-3 ?, in length. Head very large and thick, 3.1, in length of body. Operoular apparatus very strong, the operciihim itself forming nearly half the length of the head. Scales very lar^e. Developed rays of the dorsal 27-2!); anal rays '.»: venirals 10. Scales 7-37 to 41-G. Coloration dull brownish oli\ <•, not silvery. Fins dusky. Si/e very large ; readies a length of nearly •''• feet and a \\ei-ht of L'0-.'lo pounds. Mississippi Valley ; generally abundant in the larger streams. '•,,il>li,,l,tn l,nl,,tln* K.-if. .Imini. Pliys. ]-]+. 1-J1 ; Agassi/, Amrr. .Tonni. Sri. Arts, 1854, r.Hi: ^•l,,;l,i,,;iii,illniH,-;ii>ri,i,ll,i ( Jiiut her, \ii, -J.J.) .fc'idaii. P.nli. I". S. Niii. Mns. xii, -J07. There has been perhaps a confusion Mr. \. Nun'.-, t \ju-s of this species. One srn(. l.y him to us is :m Ictiobus. 30. CATOSTOMIOrE BUBALICHTIIYS. 115 6O.— BUBAL.ICHTHYS Agassi*. Buffalo-fishes. (Agassiz, Amer. Journ. Sci. Arts, 1855, 192 : type Carpiodcs urus Ag.) Head moderate or rather large deep and thick, its superior outline rapidly rising ; its length about 4 in that of the body. Eye moderate, median or rather anterior in position. Suborbital bones comparatively narrow. Fontanelle always present and widely open. Mouth moderate or small, more or less inferior; the mandible short, little oblique, or typically quite horizontal ; the mandible less than one-third the length of the head ; the preniaxillaries in the closed mouth below the level of the lower part of the orbit. Lips rather thin, thicker than in Ictiobus, the upper protractile, narrow, plicate, the plicre sometimes broken up into granules ; lower lip comparatively full (for a buffalo-fish), faintly plicate, the plicre broken up into granules, the lower lip having the gen- eral p| -shaped form seen in Carpiodes. Jaws without cartilaginous sheath. Muciferous system well developed. Opercular apparatus well developed, but less so than in Ictiobus; the operculum strongly rugose ; isthmus moderate. Pharyngeal bones triangular, with large teeth, which increase in size from above downwards. Teeth compressed, their grinding edge blunt, slightly arched in the middle, and provided with a little cusp along the inner margin, which is hardly detached from the crown, and does not rise above the surface. Gill-rakers of anterior arch slender and stiff above, growing shorter downwards. Body ovate or oblong; the dorsal outline more or less arched; the sides of the body compressed ; the ventral outline curved also, but to a less degree. Scales very large, about equal over the body, their posterior outlines somewhat serrate. Lateral line well developed, nearly straight, with 35-42 scales ; 12-14 in a cross-series from ventrals to dorsal. Dorsal fin beginning near the middle of tie body, somewhat in advance of the ventrals; its anterior rays elevated, their height about equal to half the base of the fin, the number of rays in the dorsal fin ranging from 25 to 30. Caudal fin well forked, the lobes about equal, not falcate. Anal fin compara- tively long and rather low, of 8 or 9 developed rays. Ventrals moder- ate, 10-rayed. Pectorals rather short. Sexual peculiarities, if any, un- known. Coloration dull dark brown, nearly plain, not silvery. Fius oli- vaceous or more or less dusky. Air-bladder with two chambers. Size quite large. This genus is closely related to Ictiobus, differing only in 11G CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. flu- somewhat stronger teeth. The two genera, with perhaps Carphflc* aNo. should probably In- reunited. Three species are known, two in the I'nited Stairs and a third in Central America.* (/?«u/3aJoj, buffalo; ;, fish.) 1 1 f . B. urn* .\x.—i;i,/-mrnit]i«l lliiffnlo. I'.udy much less elevated and less compressed than in B. altus, the back not at all carinated ; axis of body above ventrals about at the lateral line, and but very little farther from the dorsal outline than from the \vntral: depth ;>»-i;j in length. Head very stout, strongly trans- versely convex, thicker, larger, and less pointed than in the other, about 4 in length. Eye about equal to snout, 5i in head, much smaller than in 11. dltnx. Mouth large, considerably oblique, opening well for- wards. Mandible longer than eye. Premaxillary somewhat below sub- oil >ital. Dorsal fin lower and less rapidly depressed than in the next, the longest ray scarcely half the length of the base of the fin. Anal fin rounded; its rays not rapidly shortened ; the middle ones not much shorter than the longest. Colors very dark; fins all black. Scales >-ll-7; I). 30; A. 10. Mississippi Valley ; in the larger streams. ' .irjiintlrx nritn Agassi/, Ainer. Journ. Sri. Arts. 1-7.1, 355: BnbaH<-ltt]iti* »)•;<•<, niyer, Atjassiz, Ainer. Journ. Sci. Arts, 1855,193-195; Jordan, 1. c. 209.) 115. B. Stilus Nelson. — Small-monthcd Buffalo. JJody considerably elevated and compressed above; the dorsal region siibcarinate: belly thicker : depth '2\ -2'[ in length; axis of body above i li<- ventrals, belo\v the lateral line, and nearly twice as far from the back as from the belly. Head moderate, triangular in outline when viewed from the side, 4 in length. Eye equal to snout, 4-5 in length of head, much larger than in /.'. itrun. Mouth quite small, notably smaller and more inferior than in Ji. iirux. Mandible about equal to eye. ])orsal I'm elevated in front and rapidly declined, the highest ray reaching much beyond the middle of the fin, the seventh ray about half the length of the third or longest. Anal lays rapidly shortened behind, the middle rays much shorter than the lirst long ones. Scales 8-39-G ; • /.'. i/i 1 1-iiHiiinili* ((.iintlnn .Ionian. Month small, inferior, slightly corrugated. 1 >e|iih ".'. :'. 1 in length. Head 1-1'. not nineli longer tlian lii^li. - .ye rather small, -111 ih of I lie li-nut !i "f thr lie.-ul .-md t \vo-li fi I «s th;il of i lie snout. Snlx.rl.i I ;i]s nar- Anli i MM dor-.il royfl not inueli nroiliie.-d. sliorler I lian the In •ail. Caudal forked. ,,f \cnlral MTUeally l»elo\v the fourth dorsal ray. I'eetnral I'm not extending li. \ i-ntrals. Therr an- '• longitudinal series of scales l.i-t\veen the lateral line and tlie loc.t 1,1 the \i-mial. Coinration uniform. S. -ili-s 7-'.\*-~ ; D. 5i9 ; A. 10. Rio Us u- iii:i< inia, (Jiiati-mala. ^< 1 iintlttr.'} *- '• / ••••jmithu* imridivmilia (JiintluT, vii, 5i3.) 30. CATOSTOMID^E— CARPIODES. 117 D. 29 ; A. 10 ; Y. 10. Coloration paler ; the lower fins slightly dusky. Mississippi Valley and southward ; generally abundant. (Calostomus biibalns Kirtland, Rep. Zool. Ohio, 1838, 168, not of Rafinesque: Buba- liclitlti/s bubal us Agassiz, Amer. Jouru. Sci. Arts, 1855, 195 : BubalichtJiys bubalus Jordan, 1. c. 20(5: Sclerognathm wus Glinther, vii,22; B. altus Nelson MSS. in Jordan, Proc. Acad. Nat. Sci. Pliila. 1677, 73; apparently the oldest tenable name, certainly belong- ing to the species.) 61.— CAKPEODES Rafinesque. Carp Suckers. (Sclcrognathus Valenciennes.) (Rafinesque, Ichth. Oh. 1820, 56: type Catostomus cyprinus Le Sueur.) Head comparatively short and deep, sometimes conic, sometimes blunt; its length ranging from 3 £ to 5 in that of the body; its upper surface always rounded. Eye moderate, median or anterior in posi- tion. Suborbital bones well developed, their depth about half that of the fleshy portion of the cheek below. Fontanelle always present, well de- veloped. Mouth always small, horizontal and inferior; the mandible less than one-third the length of the head ; the lips thin, the upper pro- tractile, narrow, the lower quite narrow, /y-shaped, or rather fi -shaped, behind ; both lips feebly plicate or nearly smooth, the plicaB often more or less broken up. Jaws without cartilaginous sheath. Muciferous system moderately developed. Opercular apparatus well developed; the subopercle broad; the operculuin in the adult more or less rugose. Isthmus moderate. Pharyugeal bones remarkably thin and laterally compressed, with a shallow furrow along the anterior margin on the in- side, and another more central one on the outline of the enlarged sur- faces. Teeth very small, compressed, nearly equally thin along the whole inner edge of the bone, forming a fine, comb-like crest of minute serratures; their cutting edge rises above the inner margin into a prominent point. Gill-rakers of anterior arch slender and stiff above, becoming reduced downwards. Body ovate or oblong; the dorsal outline more or less arched; the ventral outline more nearly straight; the depth from half to one- third the length ; the sides compressed, the back nota- bly so, forming a sort of carina. Caudal peduncle short and deep. Scales large, about equal over the body, their posterior margins slightly serrate ; lateral line well developed, nearly straight, with 34-41 scales j 12-15 scales in a cross-row from dorsal to veutrals. Dorsal fin begin- ning near the middle of the body, somewhat in advance of ventrals, falcate ; its anterior rays elevated and often filamentous, their height ranging from £ to 1£ the length of the base of the fin ; the number of 118 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. developed rays ranging from 23 to 30. Caudal fin" well forked, tlio lobe> eipial. Anal tin comparatively long and low, emarginatc (in males), its number of developed rays usually 8. Veutrals shortish, with usually 10 rays. Pectorals short. Sexual peculiarities little niarknl; in sonic species, at least, the males in spring ho ve the snout minutely tuberculate. Coloration always plain; pale olivaceous above, white below, but hardly silvery, the fins all partaking of the color of the region to which they belong. Air-bladder with two chambers. Si/e medium or rather large. This genus is very close to Ictiobus and ];nl>/s. Its species are numerous and very difficult to determine. All belong to the United States. (Latin carpiodcs, carp-like.) * Dor>al I'm with the anterior rays more or less shortened, thoir length one-half to 1 \vo-thirds that of the base of the fin; muzzle more or less conic and pro- jecting. a. Head short, 4-5 in length. 116. C. carpio (Raf.) Jordan. — Carp Sucker. Head comparatively short, its length contained 4-5 times in the length of the body. Body more fusiform than in the others, compressed, but not much arched, the depth 2g-3 times in the length. Anterior rays <>t' dorsal short, notably thickened and osseous at base, especially in the adult; the first ray nearer the end of the muzzle than the ba^e of the caudal fin, the longest ray a little more than half the base of the I'm; caudal moderately forked. E}'e medium, anterior, 41 in head. Miix/.le short, but projecting much beyond mouth. D. 30; Lat. J. 36. Si/.e largest »»t' the genus. Mississippi Valley; generally abundant. ciirj>:n R:iliiii's(|iii', Ichfh. Oh. 1820,50; Jordan, 1. c. 200: Carpiodcs tnim- ( ope, Proo. Amer. 1'hil. Soc. Phila. 1870,4*4.) ll'iid intermediate. its length contained about 4 times (3J-4J) in that of body ; anterior rays of dor>al not thickened at ba>e. I 1 7. C. tilinadus 15. & G.—Carp llmly elongate, not much elevated ; the de]>tli L>:< in length. Head .'r,1-!; the muzzle prominent, but rather bluntish. Front scarcely con - oave above eyes the proiile forming a somewhat uniform curve. Kye small, nearly than three-fourths the length of the I'm : t lie first ray nearly mid- wax between snout and base of caudal. Caudal lobes blunt; subor- bilals narrow, small. Scales ({-.",7-5; I). LM-L'7 ; A. 8; V. 10. Ohio to the Uio Cii-ande and rjijier Missouri ; common. Distinguished from 30. CATOSTOMID.3E — CARPIODES. 119 the preceding by the much smaller eye. This description is based on specimens from Wabash Biver. (Carplodcs cyprinus* Jordan, 1. c. 198: Carpiodes tumidus Baird & Girard, Proc. Acad. Nat. Sci. Phila. 1854, 28 : Carpiodes damalis Girard, Proc. Acad. Nat. Sci. Phila. 1856, 170: Carpiodcs grayi Cope, Proc. Amer. Phil. Soc. Phila. 1870,482.) 11§. C. tBlOEnpSOcai Agassiz. — Lake Carp. Body stout, short, the back much arched, the depth 2J in length. Head 4 to 4J in length, the muzzle moderately pointed. Dorsal rays considerably elevated, two-thirds as long as base of fin. Eye small, 5£ in head. Tip of lower jaw much in advance of nostrils, maxillary reaching line of orbit. Anterior suborbital large, deep, roundish. Ori- gin of dorsal about midway of body. Scales rather closely imbricated, 8-39 to 41-6 ; D. 27 j A. 7 j Y. 10. Great Lake region ; abundant. Per- haps identical with the preceding. (Agassiz, Amer. Journ. Sci. Arts, 1855, 191 ; Jordan, 1. c. 198.) aaa. Head long, about 3$ in length. 119. C. toasoai Agassiz. Head long, contained about 31 times in length to base of caudal. Muzzle elongate-conic, so that the eye is nearly median, the middle of the length of the head falling in front of its posterior margin. Body not much arched, depth 3 in length. Anterior rays of dorsal pretty high, not much shorter than the base of the fin, not thickened at base. Lips well developed. Eye large, 4^ in head. Scales 7-40-5 ; D. 27 j A. 7 ; V. 10. Mississippi Valley. (Agassiz, Atncr. Journ. Sci. Arts, 1854, 356 ; Cope, Proc. Amer. Phil. Soc. Phila. 1870, 483; Jordan, 1. c. 197.) ** Dorsal fin with the anterior rays very much elevated and attenuated, about equal- ling, or more usually exceeding, the length of the base of the fin. 120. C. cy priMTOS t (Le Sueur) Agassiz. — Quillbaclc; Spear-fish; Sail-fish; STdmlack. Muzzle conic, projecting, obtusely pointed, tip of the mandible reach- ing to opposite nostrils ; maxillary reaching to opposite front of orbit. Anterior suborbital as deep as long. Head 3^-4 in length. Eye large, 3|-4i in length of head. Body much arched above, the depth 2^-2i in length. First ray of dorsal usually nearer muzzle than base of * The original Catostomus cyprinus was described from tributaries of Chesapeake Bay. It cannot be the present species, as the dorsal is described and figured as strongly falcate and the caudal deeply forked. We have seen no specimens from the original locality. t Possibly two or three species are here included: velifer, with the anterior dorsal rays longer than the fin ; cyprinus, with them somewhat shorter ; and cutisanserinus, with a blunter snout and the dorsal rays very long. 120 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. caudal. Caudal deeply forked, its lobes slender, tlie upper the longer. Scale.-, 7-:57-."i; 1). -0 or 27. Chesapeake Bay to Mississippi Valley; ;:nirrally abundant. (l(\it<>xti,i,iiix ••iipr'uni* L<- Sueur, Jonrn. Acini. Xat. Soi. Philn. 1817,91; Giiuther, vii, ]-J: Ciitoxtoiitiix n I if ir Raliuesque, It-bill. Oh. 18'JO, 50: Carpiodes rcJifcr Cope, Proc. Aiin-r. 1'liil. Sue. I'hila. 1~TO, 4>~2 : Carpiudi'S rdij\r Jordan, 1. c. 190: Carpiodes cutisan- »'<>["•, run. Anirr. Pbil. Soc. Phila. 1S70, 481: Carpiodes culisanserinus Jordan, 1. < . I'.i I: Ciirpiodi's -Wf/ie Cope, Proc. Ainer. Phil. Soc. Pbila. 1870, 41.) 121. C. duffos-Dnns Cope. Mn/./.le exceedingly blunt, so that the anterior edge of the mandible is in line with the anterior rini of the orbit, and the maxillary reaches to ilif anterior edge of the pupil. Anterior suborbital deeper than long. I I«-ad -l\ in length. Eye quite large, 31-4 in head. Body arched, the depth somewhat less than half the length. First ray of dorsal nearer nm/zle than base of caudal. Scales G-35-4; D. 24; A. 8; V. 9. Ohio Valley; not common. Perhaps a deformity of the preceding. (Cope, Proc. Arner. Pbil. Soc. Pbila. 1870, 480; Jordan, 1. c. 195.) 62.— CYCLEPTUS Rafmesqiie. Blade Horse. (RafuK-squc, Jonrn. Pbys. Chim. Hist. Nat. Paris, 1819, 421 : type Cydcptus nigrcs- Uat'. = Catotitomus p.longatus Le Sucur.) Head very small, short and slender, its length contained 0-7 times in that of the body; its upper surface rounded. Eye small, behind the middle of the head ; not very high up, its length G-8 in that of the head. Sulxu hital bones small and narrow. Fontanelle entirely obliterated by the union of the parietal bones. Mouth small, entirely inferior, over- lapped by the projecting snout; the upper lip thick, pendent, covered v. iih .".-.") rows of tubercles, the outer quite large, the inner small; lo\\er lip moderate, formed somewhat as in CatoxtoniHN, but less full, incised behind, .laws with rudimentary cartilaginous sheath. Muciferous svs- tnn not greatly d' veloped. Opercular apparatus not greatly devel- oped; the open-ilium smooth and narrow. Isjhmus moderate. Gill- rakers moderately long, sol't. riiaryngeal bones strong; the teeth stout, increasing in si/e downwards, rather wide apart. Body elongate, mod- erately eompressed, not miieh elevated ; the caudal peduncle long; the Btesl depth conlnined •!-(» times in length. Scales moderate, about equal over the body, not closely imbricated, with Avide, exposed sur- I'ace-. the number in the lateral line from 55-GO, and about 17 in a trans- \erse series from dorsal to \entrals. Edges of scales eremite. Lateral line veil d«-\ eloped, nearly straight. Fins rather large, dorsal fin be- 30. CATOSTOMID^E — PANTOSTEUS. 121 ginning in front of ventrals and ending just before anal, of about 30 rays, strongly falcate in front, the first and second developed rays in lengtk more than half the length of the base of the fin, the rays rapidly short- ened to about the eighth, the length of the remaining rays being nearly uniform and all short. Caudal fin large, widely forked, the lobes about equal. Anal fin quite small, low, of 7 or 8 developed rays, scaly at base. Ventrals moderat e, with 10 rays. Pectorals elongate, somewhat fal cate. Sexual peculiarities somewhat marked ; the males in spring with black pigment ; the head then covered with small tubercles. Air-blad- der with two chambers, the anterior short, the posterior elongate. One species known, (-/.bzhoq, round; As-ro?, slender. "The name means small round mouth." — Rafmesquc.) 122. C. eSosig'atiHS (Le Sueur) Ag. — Blade Horse; Gourd-seed Sucker; Missouri Suclcer; Suckerel. Depth 4-5 in length ; head 6-S-|. Eye small, 6-7 in length of head. Longest dorsal rays a little longer than head. Pectorals rather longer than head. Dorsal rays 30 ; anal 7 or 8 ; scales 9-56-7. Coloration very dark, the males almost black. Size large. Length of adult 1 |-2i feet. Mississippi Valley; rather common. A singular and interesting fish. (Catostomus eloiif/atiis Le Sueur, Jourii. Acad. Nat. Sci. Pkila. 1817, 103: Sclcrogna- thus elonr/alus Giiiitlier, vii, 23; Jordan, 1. c. 189.) 63.— PANT©§TEU§ Cope. Hard-headed Suckers. (Cope, Lieut. Wheeler's Expl. AV. 100th Mer. v, 673, 1876 : type Minomus platyrhynchus Cope.) Head moderate or rather small, 4-5 times in length of body, flattish and rather broad above, anteriorly somewhat pointed. Eye rather small, usually behind the middle of the head. Suborbitai bones narrow, as in Catostomus. Bones of head rather thick, the two parietal bones firmly united, entirely obliterating the fontanelle. Mouth rather large, entirely inferior; each jaw with a more or less developed cartilaginous sheath, separable in alcohol, essentially as in Chondrostoma, Acrocliilus, and related genera. Upper lip broad, papillose, with a rather broad, free margin and 2 or more series of tubercles. Lower lip largely devel- oped, with an extensive free margin deeply incised behind, but less so than in Catostomus. Pharyngeal bones and teeth essentially as in Catos- tomus. Isthmus quite broad. Body generally elongate, subterete, and little compressed. Scales quite small, 80-105 in the course of the lat- eral line and 30-35 in a cross-series between dorsal and ventrals, usually more or less reduced in size and crowded forward, as in Catostomus. 122 coxTKir.rnnxs TO NORTH AMERICAN ICHTHYOLOGY — iv. Lateral line well developed, straightish. Fins generally rather small. First ray .if dorsal usually about midway of body, its rays few, 9-12 in number. Yeiitrals inserted rather under posterior part of dorsal, their rays 10 or 0. Anal short and high. with 7 developed rays. Cau- dal rather shallow-emargiuate. Pectorals well developed. Air-blad- der with two chambers. Size rather small. Species numerous in the Rocky Mountain region, (-^, all; o0r£oy, bone.) • Sralrs Kindi-rati-, ,-il-S,-, ill nal nvrr tin' liody, nut reduced forwards. Iii3. P. plcfocillS (I)aird & Giranl) Jordan. 1'xidy rather stout, subfusiform. Head slender, rather short, 4VJ in length. I\ve ~> in head. Ventrals reaching nearly to vent. Scales small, scarcely crowded anteriorly, 80 in the lateral line, 20-.'.U) in a cross-series. Depth 4£ in length. Dorsal midway between snout and upper caudal rays. Caudal short, emarginate. Color dark brown, faintly mottled ; sides with orange in the males. (Girard.) Lake Guz- man, Mexico. (Catostomua plebeius Baird & Girard, Proc. Acad. Nat. Sci. Phila. !;-."< 1, :2- : (.'utvxto- mus j>l( bijun Giiutla-r, vii, 15; Jordan, 1. c. l^l.) I C 1. P. dclpEiiiaus Cope. "The dorsal outline is arched, the head flat above, not elevated behind and much depressed ou the muzzle. The muzzle is wide and does not project beyond the upper lip, which is appressed to its lower lace and bears four rows of warts; its smooth commissural part is narrow. Ou the lower lip the tubercles advance nearly to the commissure; this lip i> decph emar-iiiate posteriorly. The eye enters the length of the head r> times, l'?, times measuring the muzzle, and twice the interorbital re- gion. Head I:; times in length to end of caudal basal scales. Scales in :10 longitudinal series, between dorsal and ventral (ins. AVntrals re- markably short, extending little more than half way to vent, originat- ing under posterior third of dorsal. Pectorals well separated. Isthmus ^ide. Color abo\e blackish, with a st rong inferior marginal shade on the lower part of the sides, ;uid the lighter tint above; a brown spot just abo\e axilla is cut oil' from il by a band of the yellow color which cover, the belly and head below." (Cope.) Probably from C reen River. (.l/i'i/.tmir, tliliiliiiui* Cope, ll:i\ili-n'.s Cml. Sui-v. Wynm. Terr. 1672, 430.) /5. I*. Imrdeas ('upr. This >pc«-i«-s is distinguished by its \.-ry short head and marked col- , resembling in that resjx-ct the C. ////.:/// «n imsix of Girard; with 30. CATOSTOMID^ — PANTOSTEUS. 123 this species it has, however, nothing' else in common. "Head wide, muzzle not projecting beyond upper lip; latter not pendant, with narrow, smooth commissure and 3 or 4 rows of tubercles. Lower lip deeply incised, tubercular to near inner edge. Eye 5.25 times in length of head, twice in iuterorbital width. Head 5 times to end of basal caudal scales. Form stout. Body cyliudric anteriorly. Dorsal fin nearer end of muzzle than end of caudal scales. Scales of body subcqual, in 30 longitudinal rows between dorsal and ventral fins, latter originating beneath hinder border of dorsal, not quite reaching vent. Pectorals well separated. Isthmus wide, narrower than in M. dcl- pJtinus. Color blackish above; a broad olive band from upper part of opercular border along upper half of caudal peduncle, and a broad black baud below, narrowing to a line along the middle of the peduncle ; be- low yellowish, a band of the same cutting off a blackish area above the axilla, as in the last species." (Cope.) Probably from Green Eiver. This species and the two preceding are not well separated. (Minomus bardus Cope, Haydeu's Geol. Surv. Wyoru. Terr. 1872, 436.) aa. Scales very ranch reduced and crowded anteriorly ; upper lip fall, pendent ; car- tilaginous sheaths on jaws well developed, the commissure transverse and abruptly angulate at the corners of the mouth. 126. P. plaftyrrSaynncSaaas Cope. Body extremely elongate, the depth 5i-7 in length. Head 4f in length, short and wide, with depressed and expanded muzzle, which considerably overhangs the mouth. Isthmus very wide. Dorsal rays 11; ventral rays 9; scales 15-80-12. Belly and lower fins yellowish, probably red in life. Utah Lake. Perhaps identical with the next. (Minomus platyrhyndms Cope, Proc. Auier. Phil. Soc. Phila. 1874, 134; Jordan, 1. c. 183.) 127. P. geiaeTOsras (Girard) Jordan. Body moderately elongate, the depth 4^-5 in the length. Head rather short, 4| in length, not specially broadened ; muzzle not greatly overhanging the mouth. Lower lip full, with 4 or 5 rows of tubercles ; upper with 2. Isthmus very broad. Head with conspicuous mucous tubes. Lower fins large. Dorsal rays 9 (rarely 10); ventral rays 10 (rarely 9) ; scales 11 to 14-83 to 87-13 to 15. Light brown above, with dusky spots and clouds ; males with the chin and fins red, and a crim- son lateral band. Eio Grande to Mojave Desert and Great Basin of Utah ; very abundant. (Catostomns fjenerosus Girard, Proc. Acad. Nat. Sci. Phila. 1856, 174: Minomus jarro- vii Cope, Proc. Amer. Phil. Soc. Phila. 1874, 35; Jordan, 1. c. 183.) ** Scales very small, 100-105 in the lateral line. 12-4 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 128. P. vii'csccns Cope. Body elo i-ate. compressed, the caudal peduncle contracted. Head >!iort, wide, .". iii length. Muzzle obtuse, little projecting. Upper lip wide; lower lip full, emargiuate. Jaws with well-developed cartilagi- nous sheaths. Scales much reduced in size forwards. Dorsal rays 10; ventral!); se ales 18-103-16. Color olive; lower surface yellow. Head- waters of Arkansas River. (Cop.-, WIi.-i-l.-r'.s Exiil. W. lUOih Mer. v, 675, 1876; Jordan, 1. c. 182.) 61.— CATO§TO:?IU§ Lc Sueur. Suckers. (Hylo»iy:on Agassiz ; Acomus and Minomua Girard. ) (Lc Siteur, Joiirn. Arad. Nat. Sci. Phila. i, 89, 1817: type Cyprinm catoatomus Forster = CatostomHs longirostrum Le Sueur.) Head more or less elongate, its length ranging from 3^ to 5 times in. that of the body. Eye usually rather small, liigh up, and median or more or less posterior in position. Suborbital bones narrow, longer than broad, much as in Moxostoma. Foutanelle always present, usually widely open, in two species reduced to a narrow slit, but never wholly obliterated. Mouth rather large, always inferior, and .sometimes nota- bly so; the upper lip thick, protractile, papillose; the lower lip greatly developed, with a broad free margin, deeply incised behind, so that it form ; two lobes, which are often more or less separated. Mandible horizontal, short, not one-third the length of the head and not reaching •to opposite the eye. Lower jaw usually without distinct cartilaginous sheath. Opercular apparatus moderately developed, not rugose. Pha- r\!igeal bones moderately strong, the teeth shortish, vert ically com- pressed, rapidly diminishing in size upwards, the, upper surface of the teeth nearly even or somewhat cuspidate, liody oblong or elongate, more or less fusiform, siibterete, more or less compressed. Scales com- paratively small, typically much smaller and crowded anteriorly, the number in tin- lat -ral line ranging from about .")0 to 115, the number in a transverse series between dorsal and veiitrals from !."» to 10. Lateral line well developed, straight ish, some\vl:at deciirved anteriorly. Fins vari- !y developed. Dorsal with its first ray nearly midway of the body, with from !) to 1 1 developed ra\ s. Anal (in short and high, with probably always 7 developed rays. Yeiilrals inserted under the middle or poste- rior part of the dors, il, typically with 10 rays; in one snbgenns usually '.': the number often subject to variation of one. Caudal I'm usually deeply forked, the lobes nearly equal. Sexual peculiarities not muck 30. CATCSTOMID^E - C'ATOSTOMUS. 125 • marked ; the fins higher in the male and the anal somewhat swollen and tubereulate in the spring. Breeding males in some species with a rosy or orange lateral band. Air-bladder with two chambers. Vertebrae in C. commersoni and C. nigricans 45-47. Species very numerous, all be- longing to the United States, except the Siberian C. rostmtus Tilesius. , inferior; a-o<}.a, mouth.) * Scales very small, much reduced aud crowded anteriorly, 83-115 in the lateral line. (Catostomus.) a. Fontauelle almost obliterated, reduced to a narrow slit; each jaw with a well- developed cartilaginous sheath (as in Pantostcus'). 129. C. diiscotoo&MS Cope. Body snbterete, compressed behind, the depth 5 in length. Interorb- ital space 2 in head. Head quite short, broad and rounded above, 4^in length. Eye small, far back and high up, 6 in head. Mouth very large, inferior, beneath the projecting snout. Upper lip very full, pen- dent, with about 5 rows of tubercles. Lower lip very fall, moderately incised, with about 10 rows, a notch separating the upper lip from the lower. Each jaw with a slightly curved cartilaginous sheath on its edge, the two parallel with each other and fitting closely together. Fins small. Dorsal 11 ; caudal little forked; scales 15-90-11, irregular. Colors dusky. Size small. Idaho to Wyoming and Arizona. (Cope, Hayden's Geol. Surv. Wyom. Terr. 1870, 435; Jordan, 1. c. 170.) aa. Fontanelle well developed ; jaws without evident cartilaginous sheath. i. Upper lip very broad, with several (5 or G) rows of large papillae. 13®. C. latipiMBBls Baird & Girard. Body slender and elongate ; the caudal peduncle especially long and very slender; the depth 5^ in the length. Head moderate, 4f in length, rather slender, with prominent snout and rather contracted, inferior mouth. Outline of the mouth triangular, the apex forwards. The lips very thick, greatly developed ; lower lip incised to the base; its pos- terior margin extending backwards to opposite the eye. Jaws with a slight cartilaginous pellicle. Eye small, high up. Preorbital bone broad, scarcely twice as long as deep. Scales long and low, posteriorly rounded, their horizontal diameter greater than the vertical, 17-98 to 105-17. Fins excessively developed, especially in the males, the free border of the dorsal deeply incised. Height of each of the three verti- cal fins in the males greater than the length of the head. Dorsal 13, in- serted nearer snout than base of caudal. Caudal very strong, the rudi- mentary rays at its base unusually developed. Least depth of tail less 12G CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. than one-third tin- head. Coloration silvery; the males probably rosy and tiibriviilate in spring. C.ila region to Wyoming; iiot abundant. , r..:ird vV <;iiar.l. I'm.-. A. -id. Nat. Sci. Phila. 1853, 3J?; Giiuth/r, vii, 14 ; Jordan, I.e. i: : - ' nix i/ii:inti,iit MMV Girard,Proc. Acad. Nat. Sci.Phila. 1856,173.) 131. $'. EvJ!roi»i:i:n:s .Ionian. liody Ion-- and slender, subterete, compressed behind, the form es- sentially that of ('. loii'jiroHtrix, the depth contained 5t times in the length. Head large, I in length of body, the interorbital space broad and llat. 1'.'. in length of head. Eye small, high up and rather posterior. 1'ieorbital bone very Ion-- and slender, its length about ."> times its depth. Month large, precisely as in C. latipinnii, the upper lip pendent, very large. with .~»-8 series of tubercles. Dorsal (in not elongated or e>pe.-ially elevated, its rays 11, the beginning of the dorsal much nearer base of caudal than snont. Caudal fin Ion-- and strongly forked. Anal tin long and high, reaching base of caudal. Ventrals not reaching vent. Caudal peduncle stout and deep, its least depth more than one-third length of head; its length about two-thirds that of head. Scales quite small, about as in towr/i'ms/m, the exposed portion not notably length- ened. Chest with well-developed scales. Scales 1( {-100-1-1. Colora- tion dusky brown, a dusky lateral band, pale below, the dark colors ex- tending low. Snout quite dark. Size large. Montana to Nebraska. (Jordan, Lc. 17-.) /-.'.. l"|i|i r lip roinpara'iyrly Him and narrow, vulh lint tVw (:i or -I) VO\VH of papilla'. 132. C. lonpfiirostrns L<' Sucur. — f.(>iiliin-t spn-ifs. It is slimier than C. lulifiiiniix. with shorter and deeper caudal peduncle and lower fins. A blackish lateral baud. I>. 1'.'; Lai. 1. "'. l'p]icr lip \\ilh 1 |-i:\\s of papilla'. Tlir original type from Lakr (Jii/man, ( 'liiliu.ilina. i> now l"-t. 30. CATOSTOMIDJ5 CATOSTOMUS. 127 Alaska; very abundant northward. The most widely distributed species. (Cyprinus vatostomus Forster, Pliil. Trans. 1773, 155: Catostomus longirostrum and hudsonius Lo Sueur, Journ. Acacl. Nat. Sci. Phila. 1817, 102, 107 : Catostomus forsterianus Eichardson, Franklin's Journal, 1823, 720 : Catostomus aurora Agassiz, Lake Superior, 360 : Catostomus hadsonius Giiuther, vii, 13 : Catostomus griseus Giinther, vii, 14 ; Jordan, I.e. 175.) 133. C. taBaoesasis Gill & Jordan. — Talioe Sucker. Eather stouter, the depth 4 J-5 in length. Head very large and long- acuminate, the muzzle nearly one-half its length, overhanging the rather large mouth. Lips moderate, the upper pendent, with about 3 rows of small papillae ; the lower rather full, similarly papillose. Eye nearly median, rather small, SJ in head. Scales small and crowded forwards, closely imbricated, 85-90 in the course of the lateral line, and about 28 in a cross-series from dorsal to ventrals. Dorsal short, but longer than high, its rays 10. Coloration very dark; fins dusky; scales every- where finely punctate. Breeding males profusely tuberculate. Size large. Lake Tahoe ; very abundant. (Jordan, 1. c. 173 ; Jordan & Heushaw, Ecpt. Chief Engiu. app. nn, 1878, 188.) ** Scales small, crowded, and smaller anteriorly than posteriorly, 58-75 in the course of the lateral line. (Decactylus Eafiuesqne.*) c. Upper lip thick and full, with several (5-8) rows of papillae. d. Foutanelle very small and narrow ; both jaws with a weak cartilaginous sheath. 134. C. aB*SE®E»MS Jordan. Body elongate, fusiform, subterete, the greatest depth 4^-4^ in length. Head small, conical, 4§ in length. Mouth quite large, with full, thick lips, the upper very wide and pendent, with about C rows of very strong papillae; lower lip two-lobed, similatly papillose. Inter- orbital space wide, convex. Eye elevated, posterior, quite small. Fins moderate; dorsal higher than long, with 10, rarely 11, rays; ventral rays 10. Scales small, crowded forwards, 10 or 9-70-8. Color dark ; scales with dark punctulations. Nevada and Southern California. (Jordan, 1. c. 173 ; Jordan & Henshaw, Kept. Chief Eugin. app. nn, 1878, 188.) diL Foutauelle well developed ; lips 'without evident cartilaginous sheath. e. Lateral line with 70-80 scales. 135. C. HaMatGis Ayres. Head 4£ in length, rather bluntish. Mouth moderate, the labial pa- pill;^ largely developed ; the upper lip full, with about 5 rows of large * Eah'uesque, Ichth. Oh. 1820, 60 : type Catostomus bostoniensis Le Sueur. (Je/ca, ten; c, toes; i. e., 10 ventral rays.) 128 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. but rather spars.- papilla. Scales 12-74-10. Dorsal fin short, higher than Inn.:,'. <>f about 11 rays. Color dark above; sides clouded with Mark and yellow. Klamath Lake, Oregon. A little-known species. (Ayrtt, Proo. A.-ad. N:ii. S. i. e'al. 1855, ::.'; .Ionian, 1. c. 173.) 13G. I1. uiacrocJlBlMS Grd.— Columbia River Sucker. Jlody heavy forwards. Head large and heavy, convex. Snout blunt, much overlapping the horizontal mouth. Mouth quite large, with very lar-v lips, tin- upper lull and pendent, with G-S rows of strong pa- pilla*. Head large, 4£ in length, rather narrow, quadrangular, the snout pro/I ee ting. Kye large. Dorsal fin much longer than high, its rays about 15. Pectorals long and narrow ; caudal well forked. Head 4 in length. Scales 12-72-10. Coloration rather dark ; a dusky lateral Miipe; belo\v abruptly pile. Columbia River. (Mrard, Proc. Acad. Nat. Sci. Pliila. 1856, 175; Jordan, 1. c. 171.) 137. C. occndonitaJas Ayrcs.— Sacramento Sucker. P.ody rather slender, little elevated. Mouth comparatively small, smaller than in C. commcrsoni ; the upper lip with 5 or G rows of smallish papilhe; lips rather thin. Head quite small, rounded above, 4.4 in length, the profile steeper than in C. commcrsoni. the snout more pointed, the two sides of the head more convergent forwards. K\e >::iall. Dorsal lin longer than high, its rays 12-14; caudal well forked, the upper lobe the longer. Scales 13-75-10. Dark above, gradually paler b;-low. Streams of California; abundant in the Sacramento and San .loaqiiin. < Lyres, I'mr. Cal. Afad. X.-it. Hist. 1~',~>1, 18; Jordan, 1. C. 172.) C. bcf:3: Color blaelvish. Fins rather high. Lateral line with 80 scales (ac- cording to the figure). I\ve large. Head 5 in length. ?.Ioulh small, wilhbr.iad lips. Kio Iluagui, Mexico, west of the Sierra Mai Ire. (Girard.) This species is, perhaps, allied to C. occi:'.: ('i!i>ri)niH It n sM itehill, Tr:i:i>. Lit. A 1'lii!. Soo. N. V. 1-1 I, •!."»<: Cntoxtomnx I- rrx ( iiinther, vii, 1."): Itn* Jordan, 1. c. ]('»>: (.'HtiixIniHtix <-i>Minitnix ami hoxtunii iixi .-,- l.c Suciir, Jonrn. 3( i. 1'liila. 1~17. '.*:>, Hi;;, etc.) ff. Scales .srarrrly reduced or crowded anteriorly : dorsal rays 10 or 11. 1 13. C'. Hiisi^liis I'.aird & Oirard. J'.ody rather elongate, subterete, heavy at the shoulders, tapering backward, the depth about o in length. Head moderate, about 4J in length. .Mouth comparatively small. Lips moderate, the upper nar- row, -with about 1* rows of large tubercles. Scales subeijiial. .">S-f;;5 in the lateral line, 1!) in a cross-series. A series of dusky spots along each row of scales, the spots often obscure, (lila Basin. (Ba'ml \ Cirard, Tror. Acad. Nat. Sci. Phila. 1-:>1. '.'- : C.>i>< & Yarn»\v. '/.,»,]. Whccl- . r- i:\pi. w. Kniiii M.T. v. ;;?:;. i-:c.; .Ionian, 1. c. 105.) 111. C. Clarki I'.aird A (urard. 15ody moderately stout, depth -I'.] in length. Head very small and short, aliout 5 in length. Eye moderate. Kins all notably small. Scales small, siihcipial, 9-70-9; larger mesial ly than ]>ostei'iorly. ]>ody \\ith sc;ittered nebulous spots, (d/mrd.) Ari/ona. Baird A Cirard, 1'n.c. Acad. Nat. Sci. I'liila. l-.'.t, vJ7.) ••"Scales niodcral<', not crow. led anteriorly. I- -.':.". inlhc la:«'ral line; ln'ad jicciiliarly ( I/II/H nil limn Rafinesque.*) 1 l'». <1. Ili^a-^-ailS l.c Sncnr. — //o// SinL/i/<-r : I !i>i/ Mnlly. Head flattened above, t ransv«'rsely roiicave between the orbits, the frontal bone thick, broad, and short, the physiognomy being therefore peculiar. Ventral rays normally 9. I'pper lip very thick, strongly papillose, with a broad, free mar- in. \\liich has upwards of x_]<» series of papilla- upon it : lower lip greatly developed, strongly papillose, con siderably incised behind, but less so than in ( 'ttfoxloni UN proper. Fon- tanclle shorter and smaller than in (\ nmunrrxoHi. 1'ecforal tins un- v ii-iially lar.-e. I). 10 or II ; Lat. 1. -|s_.V, : ll'-lo scales in a cross- " li'a! .1" ini. ACM!. Nat. Sci. 1'liila. 1-1-'. I'.'l : type /><>.'///>h'riiin Iv'af. -' l.cS:ieur. {'i-.i, lic]o\v; TIT//, live : lahinin. lip, Ilic live- loin-. I lower lip being supposed to distinguish it tVom /•.'jruylosxum.) (=HylomyzonAg.) 30. CATOSTOMID.E CHASMISTES. 131 series. Depth 4£-5 iu length ; head 4-4.J. Eye rather small, 4J to 5 in head. Color olivaceous; sides with brassy lustre ; belly white ; back brown, with several dark cross-blotches, irregularly arranged, these becoming obsolete in old individuals ; lower fins dull red, with some dusky shading ; young considerably variegated, the sides spotted. Size large ; maximum length about 2 feet. New York to Alabama and Kansas ; abundant. Ascends streams to spawn early in spring. (Le Sneur, Journ. Acad. Nat. Sci. Phila. 1818, 102 : Hylomyzon nigricans Agassiz, Amer. Journ. Sci. Arts, 1855, 205 ; Giiutlier, vii, 17 ; Jordan, 1. c. 1G2.) 65.— -. Interorbital space broad, 2£ in head. Kye (i-7 in head. Width of the Open mouth 3 J in head. D.I, 11, the tin elevated ill front, its anterior ray twice the height of the pos- terior and about ei|iial to the base of the fin ; A. I, 7; caudal deeply forked, the lower lobe long; lower fins small. Scales 0-G3-8. Color dusky aliovc, pale below ; the scales of the back and sides profusely cov- ered with dark punctulations. L. 18 inches. Utah Lake; abundant. (Jordan, Bull. U. S. Nat. Mu8.xii.219, 1878.) aa. "' rharyni;eal hones very thin and flat, with very numerous minute teeth, as in < 'iirjiindr.f.'1 (Lipomyzon Cope.*) 14 7. C. brevirostris Cope. " Shorter than C. luxatus, especially the muzzle, and the latter is with- out the hump produced by the protuberant premaxillary spines. Parie- tal fontanelle small. The lower lip fold is only present on the sides of the mandible. Body nearly cylindric. Scales 12-74-11. Eadii : D. 11 ; A. 0. Color dusky above, silvery below; fins colorless." (Cope,} L. 1G inches. Klamath Lake, Oregon. (Cope, American Naturalist, 1879,785.) 148. C. Itixatus Cope. "Form elongate. Head long, flat above, and with a large fontanelle. Mouth terminal, the spines of the premaxillary projecting so as to form a hum]) on the top of the snout. Lower lip a very thin dermal fold, ex- tending entirely around the chin. Scales I2-SO-!). Uadii : D. 11 ; A. 0. Color clouded above, with black punetulations, below paler, with red shades in some specimens ; tins uucolored." (Cope.} L. 3 feet. Kla- math Lake and K'iver. (Cope, Am. riean Naturalist. H79.784.) 60.— EBfiUIYEON J.ml:m. (Mnrnxtoma A".; not <>!' 1,'af.) !an. Hull. P,ullal'> Boc. \at. Hist. I-?.;, '.if.: type ('i/j,ri>iH« a!,!,,,,,/!/* Mitch. = ' riiniH xnrillii I.. -i. . I'.ody ohlon.u, rather shortened, heavy forwards, and considerably compressed. Head moderate, rather broad above. Month moderate, "I '"I"'. -^"' ' ' in- 1--I. ••'•*: type r/,,(v;/M's/rs brcriroylri* ( 'npe. (leiiroo, to be drlieiel,; ' • siiek. ) 30. CATOSTOMID^E - ERIMYZON. 133 somewhat inferior ; the upper lip well developed, freely protractile ; the lower moderate, infolded, /^-shaped in outline, plicate, with 12-20 plicai on each side. Lower jaw without cartilaginous sheath, rather stronger than usual, and oblique in position when the mouth is closed, thus simi- lar to the mouth of Ictiobns. Eye moderate, rather high up, placed about midway of the head. Suborbital bones considerably developed, not very much narrower than the fleshy portion of the check below them ; the posterior suborbital concavo-convex, about twice as long as deep, sometimes divided ; the anterior somewhat deeper than long, aome- times divided into two, sometimes united with the preorbital bone, which is well developed, and much longer than broad. Opercular bones mod- erately developed, scarcely or not rugose. Fontauelle rather large. Gill-rakers rather long. Isthmus moderate. Pharyngeal bones weak ; the teeth quite small, "slender, and weak, rapidly diminishing in length upwards, each tooth narrowly compressed, with a cusp on the inner margin of the cutting surface, and some inequalities besides. Scales rather large, more or less crowded forwards, sometimes showing irregularities of arrangement ; the longitudinal radiating furrows much stronger than usual ; the scales rather longer than deep, but so imbri- cated in the adult that the exposed surfaces appear deeper than long. Lateral line entirely wanting. Scales in the longitudinal series from head to base of caudal 35-45 in number ; scales in transverse row from base of ventral to dorsal 12-18. Dorsal fin rather short and high, with 10-14 developed rays, the number usually 11 or 12. Beginning of dor- sal fin rather nearer snout than base of caudal. Pectoral fins mod- erate, not reaching ventrals ; the latter not to vent. Ventrals under a point rather in advance of the middle of dorsal ; their rays normally 9, but occasionally 8 or 10. Anal fin high and short, more or less emargiuate or bilobed in adult males. Caudal fin moderately forked or merely lunate, its two lobes about equal. Air-bladder with two chambers. Two species known. (Ipi, an intensive particle ; /*u£w, to suck.) . E. ssucella (Lac.) Jordan. — Creelc Fisli ; Clnib Suclcer. Body oblong, compressed, becoming gibbous with age, the ante-dorsal region more or less elevated in the adults, the depth 3J in length, ranging from 2$ in adults to 4 in young. Head stout, short, about 4£ in length (4-4i), the interorbital space wide and depressed, the lower parts nar- rower. Eye not large, 4^ in head (4J-5 J). Mouth protractile downwards and forwards, the mandible oblique. Scales usually closely imbricated 134 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. and more or less crowded forwards, but often showing various irregulari- ties in arrangement, aliont !•"> (•>'.)— i,j) in a longitudinal series and l.~> (14-1(5) in a transverse series between the ventrals and the dorsal. Fin- rays somewhat variable, the dorsal with 11 (10-L">) developed rays, the anal with 7, and the ventrals with 9 (rarely S). Coloration varying with age; never distinct series of black spots along the rows^of scales. Young with ;i broad black lateral band, bordered above by paler. In some specimens from clear water this band i.; of a jet-black color and very distinct ; in others it is duller. Later this band becomes broken into a series of blotches, which often assume the form of broad trans- verse bars. In adult specimens these bars disappear, and the color is nearly uniform brown, dusky above, paler below, everywhere with a coppery or brassy, never silvery, lustre. The fins are dusky or smoky brown, rarely reddish-tinged. Sexual differences strong. The males in spring with usually three large tubercles on each side of the snout, and with the anal I'm more or less swollen and emarginate. Adult specimens with the back gibbous and the body strongly compressed, in appearance quite unlike the young. Maximum length about 10 inches. New England to the Rocky Mountains, south to Texas; very abundant. xtifftta Lac. Hist. Nat. Poiss. v, G0('>, 1K)3: Cyprhnis ollnufiu* Mitch. Trims. Lit. & Phil. Soc. i, 45U, 1814: Mojrostoma obloiujnm Giinthcr. vii, '31 : C'lttotsiomus i/;iil>nxiis S;<>n-r, Fish Mass. ~'01 ; Jordan, Man. Vert. 319; Jordan, Hull. U. S.Nat. Mua. xii, 144.") 159. E. gOOdci Jordan. Body oblong, the back more elevated, the body deeper and more com- pressed than in the, preceding, the greatest depth in advance of the dorsal tin being contained about L'\! times in the length. Nape less gib- bous than in E. sucetta. Head quite small and short, the large eye being almost exactly midway in its length. Its length 4 A in that, of the body. Kye I ', in head. Intcrorbital space rather narrow, transversely convex, less than half the length of the head. Mouth small, protractile forwards, [he lower jaw oblique ; lips as in the pre- ceding. Scales large, much larger and much more uniform in their imbrication than in /,'. Nttcrfftt, .">(» in a longitudinal series, and about i:> in a transverse series from the ventrals to the dorsal. Dorsal iin Iiigh, ol' lu de\ eloped rays; anal moderate, with 7: ventrals large, with 1<>. Color dark olivaceous above; each scale along the, sides re- pale from the strongly striated middle part, these giving in cer- 30. CATOSTOMID2E — MINYTREMA. 135 tain lights the appearance of pale stripes along the rows of scales; fins dusky, especially at their tips. Elvers of Florida. (Jordan, Bull. U. S. Nat^Mus. xii, 148, 1878.) 67.— UHNYTREniA Jordan. Spotted Suckers. (Jordan, Mau. Vert. E. U. S. ed. 2, 318: type Catostomus melanops Raf.) Head moderate, rather broad above. Mouth moderate, inferior, hori- zontal; the upper lip well developed, freely protractile; the lower rather small, infolded, /^-shaped in outline, plicate, with 12-20 plicre ou each side. Lower jaw without cartilaginous sheath. Eye moderate, rather high, placed about midway of the head. Suborbital bones consider- ably developed, not very much narrower than the fleshy portion of the cheek below them; the posterior suborbital concavo-convex, about twice as long as deep, sometimes divided; the anterior somewhat deeper than long, often divided into two, sometimes united with the preorbital, which is well developed and much longer than broad. The number and form of these bones, except as to their depth, are not constant in the same species, and do not afford specific characters. Opercular bones well developed, not much rugose. Fontanelle evident, rather large. Gill-rakers rather long, in length about half tlje diameter of the eye. Isthmus moderate. Pharyngeal bones essentially as in Moxostoma. Body rather elongate, sub terete, becoming deep and rather compressed with age. Scales rather large, nearly equal over the body, the radiating furrows not specially marked. Lateral line interrupted in the adult, but with perfect tubes, imperfect in partly grown specimens, entirely obsolete in the young. Scales in a longitudinal series 44-47 in number, 12-14 in a transverse series from dorsal to ventrals. Dorsal fin rather short and high, with about 12 developed rays, beginning rather nearer the snout than the base of the caudal. Pectoral fins moderate, not reaching ventrals, the latter not to vent. Ventrals rather in advance of vhe middle of the dorsal, their rays normally 9, rarely 8 or 10. Anal fin high and short, often more or less emargiuate in males. Caudal flu moderately forked, the lobes about equal. Air-bladder with two cham- bers. Males in spring with the head covered with many small tubercles. One species certainly known.* (//tvy?, reduced ; r/> ?;//«, aperture; in allu- sion to the imperfections of the lateral line.) * M. austrinum Beau. Body rather stout, the depth 4 iii length. Head 4^- in length. Lips plicate, truncate behind. Light hrown above, yellowish below ; some scales brownish at base. Paired fins wilh dark blotches. D. 11; A. 6; scales G-44-G. Mi- choacan, Mexico (west of Sierra Mad re). This species is probably a Minytrema, but the air-bladder has been removed from the typical specimens. (Myxostoma auslrina Beau, Proc. U. S. Nat. Mus. 1879, 302.) 13G COM'KII'.I IIONS TO NOUTII AMERICAN ICHTHYOLOGY— IV. (Eaf.) Jordan.— 5/M>««d Mnii,t; ,v//-<>>t specially depressed. .Mu- cous poivs rather strong. Kye small, ."">-'> in head. Mouth quite interior, horizontal, rather small. Scales large, firm, regularly and smoothly unl.rieated. in -Hi (tl-47) longitudinal series and 13 (lU-l-l) transverse series, the scales uot crowded forwards. Fin -rays usually: D. 1_: A. 7; V. '.». Coloration dusky above, with usually a black blotch be- hind the dorsal iin. Each scale along the sides with a small, more or less di.siinct blackish spot at its base, these spots forming interrupted longitudinal lines, along the rows of scales. These lines are usually very distinct, especially in the adult, but young specimens often shmv them faintly. Sides and belly silvery, with a coppery lustre. Sexual peculiarities moderately marked; very old males with the head covered with small tubercles in spring. No great changes with age, either in form or coloration. Size large4; maximum length about 18 inches. Great Lake region to South Carolina and Texas. (Catostoiiuix melanops Kat'. IHitli. <>h. HJO, 57: Calnxlnntux fnxt'iittux (.Jiintla-r, vii, 19; Jordun, Man. V.TI. :'-H; .Ionian, Dull. LI. S. Nat. Mus. xii, i:i>.) 68.— MOXOSTO.TIA Kafn L'cd Horse. (ritjchostomus Ay. ; Tcrclulux ll-.ii'.) (H:itini'si|iii', Iclilh. Ob. lfe'^0, .'>!: lyiif f'nloxtomiia iuti*iirn>< Kaf.) lioily more or less elongate, sometimes nearly terete, usually more or le>s compivssed. Head variously long or short, its length ranging from ;;.\ to ~>\ in that of the body. Kye usually rather large, van ing from :; to <; times in tin- Ini-ili of the side of the head, its position high up and median or ralher posterior. Suborbital bones \ er\ narrow, always much lon-er than broad, theii width less than one-fourth that of the Jli->h\ pni ol' the cliiM-k. Fontanelle on tup of head always well open, the parietal bones not coalescing. Mouth varying much in si/.e, always inferior in po>il ion, l he mandible being horizontal or nearly so. Lips usually well developed, ihe tonn of the lower varying in different sec- lions of the ueims, ii-nally \\ilh a sliglit median fissure, luit never deeply incised; the lips with transverse plica-, the folds rarely so broken up as to form papilla-, .laws without conspicuous cartilaginous 30. CATOSTOMID^ MOXOSTOMA. 137 sheath. Muciferous system considerably developed, a chain of tubes along the supraorbital region, a branch of which extends around be- hind the eye and forwards along the suborbital bones and the lower edge of the preorbital. Opercular bones moderately developed, nearly smooth. Isthmus broad. Gill-rakers weak, moderately long. Pharyn- geal bones rather weak, much as in Erimyzon and Catostomus, the teeth rather coarser, strongly compressed, the lower 5 or G much stronger than the others, which are rapidly diminished in size upwards, each with a prominent internal cusp. Scales large, more or less quadrate in form, nearly equal in size over the body, and not specially crowded any- where, usually about 44 in the lateral line (41-50) and about 12 series between dorsal and ventrals. Lateral line well developed, straight or anteriorly curved. Fins well developed, the dorsal inserted about mid- way of the body, its first rays usually rather nearer snout than the cau- dal, the number of developed rays usually about 13, but varying in dif- ferent species from 11 to 17. Anal fin short and high, usually emargi- nate in the male fish, probably always with 7 developed rays. Yentrals inserted nearly under the middle of the dorsal ; their number of rays normally 0, occasionally varying to 10; the occurrence of 10 ventral rays is probably an accidental individual character, and not a permanent spe- cific one. Caudal fin deeply forked, the lobes about equal, except in two species. Air-bladder with three chambers. Skeleton essentially as in Catostomus, the vertebra? in M. carpio 27-14. Sexual peculiarities little marked, the males in the spawning season with the lower fins reddened, and the anal rays swollen and somewhat tuberculate. Species very nu- merous in the United States east of the Rocky Mountains. They spawn in spring, running up from the rivers into the smaller streams for that purpose. They are difficult to distinguish, and have perhaps been unduly multiplied by authors. (/-ty|"», to suck; aru^a, mouth; hence, more properly Myxostoma.) *Lips full, strongly papillose. * 152. 171. p^jpaiaosMEM (Cope) Jordan. Body comparatively stout, the dorsal region somewhat elevated and louuded, the depth being about 4 in length, the head about the same. Eye rather large, high up and well back, the preorbital space being longer than the other species. Top of head flat. Dorsal rays 12-14. Scales rather large, 6-42-5. Lips well developed, deeply incised. 138 0)Nn;i!'.rTIONS TO NORTH AMi::;iCAN ICHTHYOLOGY - IV. silvery: back with smoky shading ; lower (ins white. Size large; lies a length of about - feet. Xorth Carolina to Georgia. . 1'i'ic. A::IIT. I'hil. S.H-. I'hila. l^TD^Ti); Jordan, Man. Vert. 318; Jordan. Hull. f. S. N.-il. Mus. xii, i:M.) " hips distinctly plivate. t Lower lip infolded, /\->h a ;>e:l wh;Mi viewed. from below, \vith a distinct median crease, in \viiich the t \vo halves u(' the lip meet, forming an acute an month small. • <(. l>o:--al large. \vith 1.V17 developed rays. 133. JI. vc9:ii:aoti (Cope) Jordan. I'.:)ily stout, deep, compressed, the back elevated, the depth '•*>-[ in length. Head short, heavy, ilattish and broad above, .'5';-!' in length. I )cpt h of checks halt' the length of the head. Eye rather lar^e, midway in head, l-~> in its length. Muzzle rather prominent, blunt ish, over- han-'i n-- the very small mouth. Fins very large. Dorsal long and high, its height live-sixths the length of the head, its free border straight. Pectorals nearly reaching ventrals. Color silvery ; smoky above; lower tins red. Si/..- large. Upper Mississippi Valley to Georgia and south- ward. (rii/<-!i> .} (rtil<-liiixtinnti.i luffo Copi'. llayden's (Jeol. Snrv. \','\om. I 7 J, V.\7 : Mii.n>xli>in« <-nn- •in .lordati. Hull. I" S. Nat. Mus. xii. ]'.'•'.': prol>al)l\ not <'tim i-niKji-i.titx ]',. A (',. I'roc. Acad. Nat. Sci. I'hila. 1^.')4, '27, which Professor Cope thinks is a I'orin of .U. i-itt<]iiil,itn,,i. he having oli! ained it in Texas and Ari/ona.) 155. JI. i>acJ3<';»s4' (Cope) Jordan. Head rather long, 1J, in length, llattish ab(»\c. Body elongate1, more neailx c\ lindrical, little compressed. .Mu//l<- ti'iincate. Olivaceous, Sometimes with TOWS of faint spots along the series of scales. Dorsal and caudal tins black-edged. Si/.e ipiile small, llesembles ,17. ccrri- HKin, but the i ..... i!h entirely different. Great IVdee Kivei-. (<'<>J><'-) I" oho tomut fiiili' ir-i-. I'roc. Am. 1'hil. Soc. I'hila. l-'-7li). 171: Jordan, Man. Vert. ::I7: Jordan, r.nll. r. s. \ai. Mus. \ii. l:::;.) bl>. Head very small, alionl ."• in length. 30. CATOSTOMID^E MOXOSTOMA. 139 fi.56. ITI. corcgonus (Cope) Jordan. — Blue Mullet. Muzzle couic, much projecting beyond the very small mouth; body much compressed, broadly fusiform, the back elevated aud arched. Dorsal rays 14. Color silver}', with plumbeous shades above; lower fins white. Size small. Catawba and Yadkiu Rivers, North Carolina (Cope.) (Ptychostomus coregonus Cope, Proc. Amor. Phil. Soc. Pliila. 1870, 472; Jordan, Man. Vert, 317; Jordan, Bull. U. S. Nat. Mus. xii, 134.) tf Lower lip thin, forming a narrow, crescent-shaped border around the mandible. 157. M. alburn (Cope) Jordan. — White Mullet. Head small, 5 times in length. Muzzle prominent, but less so than in M. corcyonus. Mouth moderate. Back a little elevated. Depth about 3^ in length. Dorsal rays 12-14, its free border often incised. Scales G-45-5. Coloration very pale; lower fins white. Size large; reaches a weight of 4 pounds or more. Catawba and other rivers of Xorth Carolina. (Ptyehostomua.albusCoTpe, Proc. Amer. Phil. Soc. Phila. 1870, 472; Jordan, Man. Vert. 316; Jordan, Bull. U. S. Nat. Mus. xii, 130.) 15§. M. tSjiaSassicaucai (Cope) Jordan. Head stout, as iu M. velatum, rather long, 4 in length, flattish above, muzzle truncate, not very prominent. Mouth moderate. Back elevated. Dorsal fin long, of 14 or 15 rays. Sea-green above, white below ; lower fins white. Yadkin River. (Cope.) (Ptychostomus thalassinus Cope, Proc. Arner. Phil. Soc. Phila. 1870, 472; Jordan, Man. Vert. 3115; Jordan, Bull. U. S. Nat. Mus. xii, 131.) ttt Lower lip full, its posterior edge truncate. d. Dorsal rays 15-18 in number. 159. M. carpi® (Val.) Jordan. — Carp Mullet. Dorsal fin largely developed, its rays 15-18 in number. Head rather large, 3|-4| in length, broad above. Mouth large, with full lips. Eye rather large. Body deep, strongly compressed, the back somewhat elevated, the depth about 3£ in length. Dorsal fin high and large, larger than in any other species of the genus, the first ray about as long as the base of the fin. Scales 5-43-4, quite large. Coloration ATery pale and silvery; the lower fins white. Ohio Valley, Great Lakes, and northward. (Catoslomus carpio Valenciennes, Hist. Nat. Poiss. xvii, 457, 1844 : Catostomus carpio Giiuther, vii, 20; Jordan, Man. Vert. 312; Jordan, Bull. U. S. Nat. Mus. xii, 118.) 140 COXTIill'.rTKiNS To NORTH AMERICAN ICHTHYOLOGY - IV. dil. Dorsal rays 1 .'-1 1 in nnmlxT. e. Sralo lar_:<-. -II -.">(• in the courso of tin- lateral line. /. Caudal I'm normal, the t\vo lobes about equal and similarly colorvd. 1GO. ^3. i:i:acrolopo«lotutn (Le Sueur) Jordan. — Common Etdllorsc; Mullet; ll'ltttt StirLir : I.(ii-j<-*c in length. Body stoutish, varying to moderately elongate. Lips rather lull, theblimtisli muzzle projecting beyond the large mouth ; greatest depth of cheeks more than half distance from snout to pre- operde. K \ e rather large. Dorsal fin medium, its developed rays li(- 14, usually l.'j in number, its free edge nearly straight, its longest ray shorter than head. Scales large, about 4.~> in the lateral line. Oliva- c.-niis ; sides silvery ; lower fins in the adult red or orange. Great Lakes to Virginia, southwest \vard to Arizona ; one of the most abundant fishes, reaching a length of 2 feet or more. The Red Horse of the Ohio and Mississippi, with the head relatively longer and the mouth larger, is perhaps worthy of distinction as var. duqiicsni (Le Sueur) Jor. The eastern form (var. macrolepidotum] is scarcely distinguishable from the next species. (Catmtomus macrolepidotus and duqucsni Le Sueur, Jonrn. Acad. Xat. Sci. Phila. i, '.M. 105, 1-17: Catostomits crythrurus Rif. AIIHT. Month. Ma;:. V-'l1-'. :5."i1 : I'dtoxloiitiis diUj/K^iii ('iiintlicr, vii, 18: Myxostoma macrolcjiiiloln and vars. ilm/iaxiti and ImJiryiinilin Jordan, Man. N'rrt. 313; Jordan, Dull. U. S. Nat. Mns. xii, I'M: I'tiirlioxtontus dn- yuesni, erythrurua, robustua, onciila, ?ac/irymaZe, etc. Cope, Proc. AUKT. Phil Sor. 1 Miisoxtiiiit't nirynps Jordan, Ann. Lye. Nat. Hist. N. Y. Ib7«i, :i!S is probably a 1:1011- st ic^ity of this species.) 161. .13. nmreoluiii (Le, S.) Jordan. Head comparatively short, low and small, conic, ~t-^.\ in length. Back elevated an 1 compressed. Depth 3.J in length. Mouth small, over- passed by the snout, the lips thin and small, the greatest depth of cheek half the distance from snout to prcopercle. Eye small. Coloration bright yellowish brown, somewhat silvery ; lower tins bright red. Dor- sal rays 1:1, the tin somewhat falcate, its free edge concave, its longest ray longer than head. Scales ,1-45-4. Great Lakes, Ohio Valley, and northward. ' • • • realm \.<- Snmr. .Innni. Ai'ad. Nat. Sci. 1'liila. i. '.)."), 1^17: macrolepidotu < .iinilin-, vii. 1-'; .Ionian. Man. \Yrt. :'.! 1 : .Ionian. I'.nll. II. S. Nat. Mns. xii. l-'l: .' 1'yjiriiiim II-MK ttri l.'i.li, I 'rank iin's Jonrn. I .-','::, 77:3.) T3. criusllabrc (Cope) Jordan. Ilody ilatlish, the back elevated and compressed. Depth .'J.','. contracted, lower lip thick. S -ales large, .~)-ll-.~». Dorsal rays usually 11'. Dors.d I'm elevated in front, its lit>t soft ray longer than the base. of the I'm. Color silvery, with smoky shading above, some of the scales 30. CATOSTOMID^E MOXOSTOMA. 141 blackisli at their bases ; lower fins white ; top of bead, humeral bar, and dorsal fin dusky. Neuse Eiver, North Carolina. (Cope.} Probably identical with the preceding. (Ptycliostomus crassttabris Cope, Proc. Amer. Phil. Soc. Phila. 18/0, 477 ; Jordan, Man. Vert. 314; Jordan, Bull. U. S. Nat. Mus. xii, 125.) 163. M. COBI&IS (Cope) Jordan. Body flattish, the dorsal outline elevated, the form being like that of M. corcgonus. Head small and conic. Mouth exceedingly small, the snout far overpassing it, the muzzle being much longer than in M. crassilabre. Dorsal rays 14. Eye large. Coloration smoky above, some scales dusky at their bases; sides pale; lower fins white. Yadkin Eiver, North Carolina. (Cope.) (PtycJiostomus conns Cope, Proc. Amcr. Phil. Soc. Phila. 1870, 478 ; Jordan, Man. Vert. 314 ; Jordan, Bull. U. S. Nat. Mus. xii, 126.) ff. Caudal fin with the upper lobe longer than the lower, the two similarly colored. 164. I?I. asjBSOirtansi (Raf.) Jordan. Caudal fin with the upper lobe falcate, much longer than the lower, at least in the adult, the lobes similarly colored. Dorsal fin short and high, falcate. Body compressed. Back somewhat elevated. Depth 3J in length. Head conic, fiattish, 5^- in length. Mouth very small, much as in aurcolum, from which it can probably be distinguished only by the form of the caudal. D. 12-13, half higher than long. Scales G-4G-5. Ohio Valley and Great Lake region. (Catostomus anisurus Raf. Ichth. Oh. 54 : Ptycliostomus brericeps Cope, Proc. Ainer. Phil. Soc. Phila. 1870, 478; Jordan, Man. Vert. 315; Jordan, Bull. U. S. Nat. Mus. xii, 126.) fff. Caudal fin with the lower lobe distinctly longer than the upper and differently colored, the upper lobe in the adult being red, the inferior jet-black, its two lowermost developed rays and their membranes abruptly pale (?in both sexes). 165. Iff. pcccaScirum Jordan. Body elongate, moderately compressed, somewhat elevated forwards. Depth 4J in length. Head about the same. Mouth medium, the lips full. Dorsal rays 13. Scales large, 5-44-4. Coloration usual, except of the caudal fin ; other fins all red, with blackish shadiugs. Size small. Louisiana and Southern Mississippi. (Jordan, Bull. U. S. Nat. Mus. x, 66; Jordan, Man. Vert. 315; Jordan, Bull. U. S. Nat. Musi xii, 129.) ee. Scales very small for the genus, about 56 in lateral line; body moderately elongate, the depth about 4 in length. 166. M. aBbidum (Grd.) Jordan. Head shortish, conic, the snout not much projecting, about 4 in length ; eye large. Dorsal fin small, with about 11 rays, the last rapidly 1 12 rn.vrRinrnoXS TO XOUTII AMERICAN ICHTHYOLOGY - IV. shortened. (Characters of inoiiili unknown, but iiroliably similar to ;-i>l, ;ii,L,finn and iHirilnnnn : it is said to be "much larger than in Riodrande region. ((iinird.) x nlliidiin Cnl. 1'ror. Arad. Nat. Sci. 1'liila. l-.~><>. 17:2; Jordan, Mau.Vert. 315; Jordan, r.ull. D. B. Nat. Mus. .\ii, 1-js.) . It..r-a! raya m--:l\ 1< SS tlian I'-': l>ody V.TV sl.-ndi-r. 1<»7. 71. COJ'VJJUim (Cope) Jordan. — Tiiui;>iii(> : J'li/dtostomns nut <'"]"'- I'i'"«'. AIIKT. 1'liil. Soc. Phila. 1870,478; Jordan, Man. Y15; Jordan, Bull. U. S. Nat. MILS, xii, 69.— PJLACOPIIAKYNX Cop«-. , I'mc. AIIHT. 1'hil. Soc. Phila. 1870, 4:'«7 : type. Plaoopharynx carinatus Copo.) Siu-kers like M'o.rnxtoiiKi in all respects, except thai the pharvngeal bone- arc much more developed and the teeth reduced in number, those «MI the lower hall' of the bone very large, (i-10 in number, nearly cylin- drie in l;>r;;i. being but little compressed, and with a broad, r ..... i.lcd or llatteiied --rinding sni-i'ace. The forms and positions of these enlarged teeth vary greatly. In a specimen before us the first tooth is thehigh- and I:M»I co;n]»ressed, its summit being rounded and then abruptly truncate. The second loothis not ably shorter and thicker, much larger, and rounded on top. the body of the tooth sen ing as a peduncle for the. swollen grinding surface. The third tooth is st ill .shorter and similar in form. The fourth tooth is similar to the first, being much higher than the second and third, and Hat on top. The others seem to be irregn larl\ alternated or arranged in pairs, a long one and a short one, the Ion-- Iceth in all cases being the most 1 1 mica ted. as if their surfaces had been IIK-M worn oil'. The mouth is larger and more oblique than u>ual 30. CATOSTOMID^: — QUASSILABIA. 143 in Moxostoma, and the lips arc thicker. Size large. (~/«r, a broad sur- i'ace ; (pa^o-f^, pharynx.) 16§. P. esis'iaaatws Cope. Body oblong, moderately compressed, heavy at the shoulders. Head very large, 3-f in length of the body. Eye small, behind the middle of the head. Mouth extremely large, the lower jaw oblique when the mouth is closed, the mouth, therefore, protractile forwards as well as downwards. Lips very thick, coarsely plicate, the lower lip full and heavy, truncate behind. Head above evenly rounded or somewhat cari- nated. Scales 6-45-G. Dorsal rays 13 ; ventral 9. Color brassy green above; lower fins red. Great Lakes and Mississippi Valley; abundant in inaiiy streams. (Cope, Proc. Amor. Phil. Soc. Puila. 1870, 467 ; Jordan, Man. Vert. 311 ; Jordan, Bull. U. S. Nat. Mus. xii, 108.) 7O.— QUASSILABIA Jordan & Braytou. Hare-lip Suckers. (Lagocliila Jordan & Braytou, preoccupied.) (Jordan & Braytou, Man. Vert. E. U. S. ed. 2, 1878, 401: type Lagoddla lacera Jordan & Braytou. ) Suckers like Moxostoma in every respect excepting the structure of the mouth. Head shortish, conical, with lengthened snout; its length 4^-5 times in that of the body, the opercular region being reduced, so that the eye is well backwards. Suborbital bones narrow. Fon- tanelle large, widely open. Mouth large, singular in structure, in- ferior, the upper lip not protractile, greatly prolonged, closely plicate. Lower lip much reduced, divided into two distinct elongate lobes, which are weakly papillose. The split between these lobes extends backwards to the edge of the deutary bones, which are provided with a rather hard, horny plate, as in Pantosteus. The lower lip is entirely separated from the upper at the angles by a deep fissure. The skin of the cheeks forms a sort of cloak over this fissure, the crease separating this skin from the mouth extending up on the sides of the muzzle. The crease between the lips extends down on the under side of the head. System of mucif- erous tubes well developed. Pharyngeal bones not dissimilar from the usual type in Moxostoma^ rather weak, with numerous small teeth. Body elongate, not much compressed, not elevated. Fins moderate, formed as in Moxostoma. Scales large, as in Moxostomctj the lateral line well developed and nearly straight, with about 45 scales in its course. Air-bladder in three parts. Sexual peculiarities unknown ; probably little marked. (Quassus, broken or torn; labia, lip.) 144 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 109. l<'i>i(lo1um, the depth 4 3 in the length. Dorsal fin rather low, its rays I, 12; A. I, 7; V. 0. Scales 5-45-5. Color olive or bluish brown above; sides and belly silvery ; lower fins faintly orange. Ohio Valley and southward. A singular species, abundant in some sections (Scioto River, Clinch Kiver, rhiekamauga River), but overlooked by naturalists until lately. (Layncliila Ittara Jordan & Brayton, Proc. Acnil. Nat. Sci. Pliila. 1877, 280: Lagochila laccra Jordan. Man. Vert. ed. "2, oil : Jordan, Man. Vert. cd. '2, 406; Jordan, Bull. U. s.. Nat. Mas. xii, 106.) FAMILY XXXL— CYPRINID.E. (The Carps.) 4 Cyprinoid fishes with the margin of the upper jaw formed by the pre- ma \illaries alone and the lower pharyngeal bones well developed, falci- form, nearly parallel with the gill-arches, each provided with 1-3 series of teeth in small number, 4-7 in the main row, and a less number in the others if more are, present. Head naked. Body scaly (except in Mcrtn, I'liifltijitmix, riio.rinellu8, and .1 n1»]n/ge). Barbels 2 or 4 ; absent in most of our genera, and not large in any. Belly usually rounded, rarely compressed, never serrated. Gill-openings moderate, the membranes broadly joined to the isthmus. Brachiostegals always .".. dills 4, a slit behind the fourth. Pseiulobranchire present (except .in Orihodon, etc.). ^" adipose tin. Dorsal I'm short in American species, elongate in many Old World forms. Ventral lins abdominal. Air-bladder usually large, commonly divided into an anterior and posterior lobe, rarely \\aiiting, not enclosed in a bony capsule. Stomach without appendages, appearing as a simple enlargement of the intestines. 1'Mies of moderate or small sixe, inhabiting the fresh waters of the Old World and of North America. C.enera about 200; species nearly 1.1)00; excessively abundant wlu-w found, both in individuals and specie-, and, from their great uniformity in sixe, form, and coloration, constituting one of the most difficult groups in natural history in 31. CYPRINID^E. 145 which to distinguish genera and species. Our genera are mostly very closely related, and are separated by characters which, although reason- ably constant, are often of slight structural importance. From time to time, different authors have proposed to throw most of these groups into the genus Leuciscus, a procedure which, without further discussion, may be said to have always led to confusion. The spring or breeding dress of the male fishes is often peculiar. The top of the head, and often the fins or various portions of the body, are covered with small tubercles, outgrowths from the epidermis. The fins and parts of the body in the spring males are often charged with bright pigment, the prevailing color of which is red, although in some genera it is satin-white, yellowish, or black.* (Cyprinidas, part, Giinther, vii, 25-339.) * Dorsal fin short, without developed spine, t Air-bladder surrounded by many convolutions of the very long alimentary cauai. ( Campostomince. ) A. Teeth 4-4, or 1, 4-4, 0, with oblique grinding surface and slight hook; peri- toneum black. CAMI-OSTOMA, 71. tt Air-bladder above the alimentary canal ; teeth one-rowed. (Clionilrostom'm(B.') I Intestinal canal elongate, more than twice the length of the body ; teeth with grinding surface well developed ; peritoneum usually black. B. Jaws each with a conspicuous, broad, straight-edged, horny plate ; teeth 4- 5, stout, bluutish, hook- ed, and short. ACROCHILUS, 72. BB. Jaws without horny plate. C. Teeth 6-6, strongly compressed, knife-shaped ; pseudobranchise none; ru- dimentary caudal rays greatly developed; scales very small. ORTHODOX, 73. * No progress can be made in the study of these fishes without a careful examina- tion of the teeth. The pharyugeal bones in the smaller species can be removed by in- serting a pin or a hook through the gill-opening, under the shoulder-girdle. The teeth should be carefully cleaned with a tooth-brush, or a jet of water, or a pin, and may be examined by any small lens. In most cases a principal row of 4 or 5 teeth will be found, in front of which is sometimes a set of 1 or 2 smaller ones. The two sides are not always symmetrical. "Teeth 4-4" indicates a single row of 4 on each pharyngeal bone. " Teeth 2, 4-5, 1 " indicates 2 rows of teeth on euch side — on the one side 4 in the principal row and 2 in the lesser, on the other side 5 in the main row and 1 in the lesser. In the Leuciscine genera these teeth, or the principal ones, are raptalorial, that is, hooked inward at their tips. A grinding or masticatory surface is an excavated space or groove usually at the base of the hook. A flattened or bev- elled edge sometimes sinmlates a masticatory surface, and in some of the species- the grinding surface is very narrow and confined to but one or two of the teeth. In all cases where the number of teeth is given in the specific descriptions following, this number has been verified on typical examples either by Professor Cope or the writers. Bull. Nat. Mus. No. 16 10 14G CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. ' CC. Tot-Hi .">-."> or 4-5; pseudobranchiai present; dorsal fin inserted poste- riorly. D. Lateral line complete; rudimentary caudal rays numerous; anal basis elongate.. LAVIXIA, 74. DD. Lateral line incomplete ; anal basis short ; scales ininutt-. CllltoSoMfS, 75. CCC. Teeth 4-4 ; dorsal fin nearly median. E. First (rudimentary) ray of dorsal slender, firmly attached to the first developed ray. F. Scales very small, 85-90 in the lateral line, which is complete. ZOPIIEXDUM, 70. FF. Scales larger, 35-GO in the lateral line. G. Lateral line complete HYBOGXATIIUS, 77. GG. Lateral line incomplete COLISCUS, 78. EE. First (rudimentary) ray of dorsal somewhat enlarged and blunt, connected by mem- brane with the first de- veloped ray. H. Lateral lino incomplete PIMEPIIALES, 79. HH. Lateral line complete HYBOIUIYXCIIUS, 80. it Intestinal canal shortness than twice the length of the body ; teeth hooked, the grinding surface, il'pre>- eur, narrow or rudimen- tary; peritoneum usu- ally pale. $ Dentary bones parallel, united for their whole length. (Exo- f/lossina:) I. Premaxillaries not protractile; mandible with a conspicu- ous llt-.shy lobe on e;uh side at base. EXOGLOSSUM, 81. $$ Dentary bones arched, free from each other, except at Hie symphysis. (/,<•«- ciscinffi. ) J. Abdomen behind ventral fins not compressed loan edge, tin- BOaleS pas>ing over it; anal basis generally short. K. Teeth in the main row 4-4. L. Maxillary without barbels. M. Jaws each with a hardened bony sheath; first ray of dorsal spine-like, connected by membrane Willl tile lirst developed ray : leel h 1-1. CociiLocx.vnrus, 82. MM. Jaws without bony sheath. N. Lower jaw with the lip thin or obsolete, not developed as a fleshy lobe on each side at base. O. Mandible, inten.perele, and snborbital not cavernous. P. Teeth 4-4, or 1, 4-4, 1 (1, 4-4, 2 in one spe- cies). 31. CYPEINID^. 147 E. Lateral line incomplete. HEMITREMIA, 83. RE. Lateral line complete CLIOLA, 84. PP. Teeth 2, 4-4, 2. S. Lateral line complete.. MINNILUS, 85. SS. Lateral liiie incomplete ; scales small.PROTOPORUS, 86. OO. Mandible, iuteropercle, and suborbital with conspicuous, externally visible, cavernous cham- bers; teeth 1, 4-4, 0. ERICYMBA, 87. NN. Lower jaw with the lip developed as a fleshy lobe on each side ; teeth 4-4 ; dorsal anterior. PlIENACOBIUS, 88. LL. Maxillary with a small barbel at its extremity. U. Premaxillaries not protractile ; teeth 2, 4-4, 2; scales small ; dorsal posterior. EHINICHTHYS, 89. UU. Premaxillaries protractile. V. Teeth 4-4, or 1, 4-4, 1, or 1, 4-4, 0. W. Scales very small ; dorsal posterior. X. Lateral line complete. AGOSIA, 90. XX. Lateral line incomplete. APOCOPE, 91. WW. Scales large; dorsal me- dian; lateral line com- plete. CERATICHTHYS, 92. VV. Teeth 2, 4-4, 2. Y. Head convex above ; teeth without griudiug surface ..COUESIUS, 93. YY. Head flattened above ; teeth with grinding sur- face.. .PLATYGOBIO, 94. KK. Teeth in the main row 5-5 or 4-5. Z. Maxillary with a bar- bel ; preniaxillaries pro- tractile. a. Teeth hooked, none of them molar ; teeth in the lesser row 2. b. Caudal fin symmetrical, its rudimentary basal rays not greatly developed. c. Barbel- minute, lateral; teeth without grinding surface SEMOTILUS, 95. cc. Barbel terminal ; teeth with grinding surface S YMMETRURUS, 96. 6&. Caudal fin unsymmetrical, the upper lobe much the longer, the basal caudal rays greatly developed POGONICHTHYS, 97. art. Teeth partly molar, much enlarged, obtusely truncate, lesser row with 2 teeth ; scales small MYLOCHILUS, 98. ZZ. Maxillary without barbel. d. Upper jaw not protractile; 2 or 3 teeth modified, molar ; teeth 2, 5-5, 2, or 2, 5-4, 2 MYLOPHARODON, 99. 148 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. dd. Upper jaw protractile; teeth not molar. e. Teeth two-rowed, 2 teeth in the lesser row. /. Lateral line complete. g. Teeth subcouical, scarcely hooked, sharp-edged, wide apart, the long limb of the pharyugeal bone elongate. PTYCHOCHILUS, 100. gg. Teeth compressed, close-set, strongly hooked; the pharyngeal bone of the usual form. Ji. Caudal peduncle slender and elongate, the caudal fin widely forked, its basal rudiments much developed; scales very .small ; head depressed ............................. CII.A, 101. 7i7i. Caudal peduncle stout; basal rudiments of caudal little developed. SQi'Ai.irs, 10-2. ff. Lateral line incomplete ................................ Piioxixrs, 1U15. ee. Teeth one-rowed. - Lateral line complete. g. Mouth of moderate size ...... . .......................... LETJCO8, 104. gg. Mouth extremely small .......................... OPSOIMUUU s, 105. — Lateral line incomplete; teeth serrate ............ TUYCII.KKHIHIX, 106. JJ. Abdomen behind ventral fins compressed to an edge, the scales not passing over it ; anal basis usually elon- gate ; dorsal posterior. i. Abdomen in front of vent rals rounded; anal basis rather long. j. Teeth 5-5, with grinding surface and serrate edges. NOTKMICONTS, 107. jj. Teeth 2, 5-5, 2, entire, without grinding surface. Ai.Bntxrs, It is. ** Dorsal (in short, posterior, with a strong spine, composed of two, the po>inior re- ceived into a longitudinal groove of the anterior; inner border of the ventral tins adherent to the body; teeth hooked, without grinding surface, in two rows. (1'ltnjo- pterince.) L Body with small scales ; teeth 2, 4-4, 2 ; no barbels. LEPIDOMKDA, 109. II. Body scaleless. m. Maxillary without barbel; teeth 1, 4-4, 1 ..... MI:DA, 110. mm. Maxillary with a barbel ; teeth 2, 5-4, 2. PLAGOPTKKTS, 111. •** Dorsal fin elongate j dorsal and anal fins each preceded by a serrated spine; scales large; teeth molar; species introduced. (/'»/- priniiia}.) TJ. Barbels 4 ; teeth 1, 1, :?-:?, 1, 1 ............... CYPKINTS. mi. Barbels none; teeth 4-4 .................. CAKASSIUS. 71.— CAITIPOSTOiTIA Agassi/. rollers. (Agas.si/, Amer. .loiirn. Sri. Arts, i -;,:,, v)]s: type L'ltlilu* «i<>dy than is iiMial in C. atwmalum): Campoxtninu dnbium Giiuthcr, vii, Id3; «su,Amer.Jouni.8ci. Arts, 1855,218; Jordan, Man. \\it. ed. x.', '«it7.) ft Teeth 1, 4-4, 0. 172. C. prolixum (Storer) Jordan & Gilbert. Slenderer than C. anomaUon. Head rather shorter and narrower. Scales larger and less crowded, and the coloration more uniform and paler, or more silvery. Head 4f ; depth 4£. D. 8 ; A. 7 ; seales 7-4! (-6 ; teeth 1, 4-4, 0. Tennessee, Georgia, and Alabama; abundant. Very similar to the preceding, but probably worthy of specific distinction on account of the difference in dentition, constant in all specimens exam- ined. (Leuciscus prolixus Storer, Proc. Bost. Soc. Nat. Hist. July, 1845: Campostoma anoma- Itiin var. prolijriiiit Jordan, Auii. Lye. Nat. Hist. N. Y. 1876, 326.) *** Scales laryt-r, about 4~> in the course of the lateral line ; teeth 4-4 (?). 173. C. foronosuluni Grd. Ilead short and blunt, with broad, projecting- snout. Head 4; depth 4.}. D. 8; A. 7; Lat. 1. 45. Grayish above, whitish below; sides more or less marinorate ; a black patch at the base of the caudal and on the dorsal. San Antonio lliver, Texas. (Girard.) (Grd. Proc. Acad. Nat. Sci. Phila. 1856, 176.) 72.— ACROCHBLUS Agassi/.. Hard-mouths. (.UrofliitluH A.na>si/, Amcr. Jouru. Sci. Arts, 1855, 211: type Acroclicilus alutaccus A- issi/. & Pickering.) I'.ody elongate, little compressed. Both jaws with a large, straight, horny plate, sharp externally and very eonspieiious. rpnerjawprotrae- tile. No barbel. Teeth 4-5, stout, hooked, with broad masticatory sur- laer. Intestinal canal elongate. Peritoneum black. I'seiidoliranchia' ].ic>ent. Scales small, loosely imbricated. Lateral line present. Dor- lin slightly behind ventrals. Anal basis moderate. Caudal lin broad, its i ndimentary rays recurrent on the caudal peduncle. Size rather lar-c. ('/'//»',:, sharp; ^^ :/.»?, lip.) 171. A. aliitaci'iis A^ass. & Pifk.— Hani-month. (ieneral Ibrm and appearance of the species of (.iila, but the head not depressed, and more blunt forward. I'.ody elongate, not much com- pressed, its sides more so than the caudal peduncle; the greatest depth, over the ventrals, I in length. Caudal peduncle very long and slender, 31. CYPRINID2E ORTHODON. 151 nearly terete, its length contained 4f times in the length of the body, its least depth 2f in its length. Head moderate, 4£ in length of body, bluntish, the profile considerably rounded, the interorbital space strongly convex. Mouth horizontal, subiuferior, overlapped by the broad, blunt snout, its breadth considerable, but the maxillary not ex- tending far back, to opposite the front of the eye. Tipper jaw pro- tractile, covered with a fleshy lip, inside of which is a small, straight, cartilaginous plate, similar to that on the lower jaw, but much smaller and not evident externally. Lower lip covered with a firm cartilagi- nous plate, sharp externally, the upper surface being formed by its bevelled edge. The transverse width of this plate is between four and five times its (longitudinal) breadth. The plate extends in nearly a straight line from one angle of the mouth to the other ; its transverse width is contained 2^- times in the length of the head. Eye rather large, 5£ in head, 1^ in snout, its position anterior and not high up, 2^ in interorbital space. Dorsal long, rather low, its first ray just behind the first ray of ventrals, midway between the snout and the middle of the base of the caudal fin. Caudal fin very long, the lobes about equal, longer than the head, widely forked, the accessory rays at is base very numerous and recurrent on the caudal peduncle ; about eight of these may be distinguished on each side of the fin. Anal fin rather large ; ventrals broad, reaching vent. Pectorals moderate, not reaching two- thirds of the distance to the veutrals. Scales quite small, somewhat imbedded in the skin, very loosely imbricated, or often scarcely imbri- cated at all, the exposed surfaces longer than high, profusely punc- tate; squamation quite irregular; the scales smaller on back and belly than on sides, most exposed on caudal peduncle. Lateral line much decurved. Coloration very dark, belly paler, but nearly all parts of the body studded with minute dark points. D. 10; A. 9; scales 20-85- 16. Teeth 4-5, hooked, somewhat club-shaped, with a broad mas- ticatory surface. Peritoneum black ; intestines much elongate, filled in this specimen with vegetable substance. L. 12 inches. Columbia Eiver and tributaries. (Agassiz, Aruer. Journ. Sci. Arts, xix, 214, 1835 ; Giinther, vii, 276 ; Jordan. Proc. U. S. Nat. Mus. i, 83, Iti78.) 73.— ©RTIIOBON Girard.' (Girard, Proc. Acad. Nat. Sci. Phila. 1836, 182: type Glla microlepidota Ayres.) Body elongate. Jaws normal, the upper protractile, the lower sharp- edged, with a knob at the symphysis ; no barbel. Teeth 0-6 or 6-5, 152 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. >nueh compressed, lancet-shaped, erect, nearly straight. Upper limb of the phaiyngeal bone very broad and concave, separated by a deep Hotcli from (he dentigerous portion, the bone thin and brittle. Intes- tinal canal elongate, about 7 times the length of the fish; peritoneum black. Scales small. Lateral line present. Dorsal fin opposite veti- trals. Basal rays of caudal largely developed. Anal basis short. Pseudobranchia- none. Gill-rakers moderate, clavate, the inner edge fringed. Size large. This genus is related to Chondrotitoma, differing chielly in the absence of pseudobrauchiae and of the horny inaudibular plate. ("iiOiis, straight ; oowv, tooth.) . O. inierolcpidotus (Ayres) Grd. I'.ody elongate, llead moderate; the snout very broad; eye small, about half the length of the snout. Mouth terminal, somewhat oblique, broad, the maxillary not extending to the eye. Upper head of surface. flattish, with two bony ridges. Fins rather large; the caudal strong. Coloration plain. Lateral line decurved. Head 4; depth 4£. D. I); A. s ; scales 21-105-12 ; Vert. 24 + 20. Teeth C-G or G-5, formed much as in <'n*tnma, but longer. Size large. L. 12 inches, llivers of California; Great Basin of Utah (Yarrou-). (Ctlx iniiToli'jndola Ayres, Proc. Cal. Acad. Nat. Sci. i, '21, 1«55; Girard, U. S. Par. R. R. Surv. Fish. 237, fig.; Giintker, vii, 1^75.) 74.— LAVINIA Girard. (Girard, Pmr. Acad. Nat. Sci. Pbila. 1854,1:57: type Lavinia et'ilicauda B. & G.) Body ellii>tical, elevated, moderately compressed, rapidly contracted to the slender caudal peduncle. Head small, conical. Mouth mod- erate, terminal, oblique; the lower jaw included. Scales moderate, not closely imbricated, the exposed surfaces somewhat hexagonal. Lateral line decurved, complete. Belly behind veutrals entirely scaled. Dorsal I'm \vell behind ventrals, its last ray just in front of the begin- ning of the anal, which is rather elongate. Caudal tin little forked, its rudimentary basal rays much increased in number and very strong. intestinal canal elongate. .". limes the total length of the lish; pe- ritoneum dark. Teeth !-."> or .">-,"), scarcely hooked, cultriform, with rather broad but shallow grinding surface, the largest standing up well abo\e the surface of the bone. Gill-rakers rather long and slen- der; psendobranchiic large. Si/e large. ( l,«?, color; o-. 7; A. s; scalo l-."». L. 2-3 inches. Penn- sylvania to l>akota and Tennessee; abundant in small streams; one of the most beautiful of our lishes. (Liisilit* or Clirosoinitx iri/throf/astrr R;if. Ichtli. Ob. 1820,47: Lurilus crytlu-otiafitcr Kin. Host. Journ. N;n. Ih.st. iv, :23, tig. 1644; Cope, Cypr. IVim. ll'.U : IA «U«CHS try- tlinii/nxttr (Jiinther, vii, ~'4T ; Jordan, HlfJ.) ** Sides of body with the upper band beginning opposite tbr \«'nt and extending backward to Ibe middle of tbe caudal, terminating in a black spot; lower baud extending from snout through eye, downward and backward, censing at base of anal ; back with dark spots aud cross-bars. 17§. C. oreas Cope. Form of the preceding, the snout rather more obtuse. Coloration similar to that of the preceding, except for the difference in pattern. The back clear olive-green, with dark cross-bars; belly, interspace be- tween the lateral bands, and bases of vertical fins bright crimson; tins otherwise yellow. Head 4; depth 4J. D. 8; A. 8; Lat. 1. 67; teeth 5-5. L. 2\ inches. Tennessee and Eoanoke Elvers; even more brill- iant than the preceding. (Cope, Jouru. Acad. Nat. Sci. Phila. 1808,233.) *** Body with t\\o black lateral bands mi the side, which unite on the caudal pedun- cle, the lower broader, decurved, the upper narrow and straight. 179, C. cos Cope. Slenderer than the preceding; the lateral line less distinct, often en- tirely wanting. Variations in color as in the other species. Uead 4; depth"). D. 8; A. 8; Lat. 1. 77; teeth 5-5. L. 2i inches. Susquehanna Kiver. Perhaps a variety of C. enj11iroi(ithn*, the teeth are l-(, scarcely hooked, with narrow grinding surface, and the intestinal canal is elongate, the peritoneum black. Kocky Monntain region; one species in Western Mexico.* ("otfu-, darkness; '•••;, within; in allusion to the black peritoneum.) " Scales very .small, -.".-'.Hi in the course of tin- lateral lino. '/. .(//s,'/-.//. •Jordan. I'.ody r.ither elongate, formed much as in Cinii iitioma- I it at, soineuhai compic.sM-d. t1i<' bad; somewhat elevated and rounded anteriorly. 1 1. -ad nil her large, slightly depressed above. Mouth moderate, low; the lower jaw 31. CYPRINID^E - HYBOGNATHUS. 155 180. Z. sidermm (Cope) Jor. Physiognomy of Apocope. Body fusiform. Head rather small, acu- minate. Mouth terminal, the upper jaw the longer, maxillary reaching line of orbit. Mouth forming more than a semicircle. Lower jaw hard, less attenuate than is usual in Hybognathm. Eye small, 4yL in head. Fins long, the ventrals reaching anal. Color dark iron-gray a.bove, a darker band of the same along the sides, above the lateral line, extend- ing from the end of the snout to the middle of the caudal. Head 4 ; depth 4. D. 8; A. 7; Lat. 1.88; teeth 4-4. Arizona. (Cope.) (Hyborliynchus sidcrius (lapsus for Hybognathus) Cope, Zool. Wheeler's Expl. W. 100th Mer. v, 670,1870.) ** Scales moderate, 55-60 in the course of the lateral line. 181. Z. pluoaibcmn (Grtl.) Jor. & Gilb. Body rather slender. Head moderate, rounded in front. Color uni- form, sometimes a black spot at the base of the caudal. D. 8 ; A. 7 ; Lat. 1. 58 5 teeth 4-4. Arkansas and Indian Territory. (Girard.) This spe- cies may, perhaps, be referable to Hybognathus. (Dionda plumbea and spadicea Girard, Proc. Acad. Nat. Sci. Phila. 1856, 178 : Hylo- rhynchus puniccus, Grd. 1. c. 179 : Dionda grisea, Grd. U. S. Pac. E. E. Surv. x, 230.) .— HYBOGNATHUS Agassiz. (Algoma and Dionda Girard.) (Agassiz, Anier. Journ. Sci. Arts, 1855, 223: type Hybognathus nuchalis Ag.) Body elongate, somewhat compressed. Mouth horizontal. The jaws normal, sharp-edged; lower jaw with a slight, hard protuberance in front; no barbel; upper jaw protractile. Teeth 4-4, cultriform, with oblique grinding surface and scarcely any hook. Alimentary canal elongate, about 4 times the length of the body. Peritoneum, black. Scales large. Lateral liue continuous. Dorsal over ventrals. Anal basis short. Size moderate. Species numerous ; mostly southwestern, and little known. (£/?«?, gibbous ; fva.0o~, jaw.) * Body comparatively elongate, little compressed, the depth less tbaii two-sevenths of the length. a. Suborbital bones comparatively long and narrow. slightly included; the premaxillary below the level of the eye: the maxillary just reaching the front of the eye. Lower jaw thin-edged, with a slight syuipbyseal knob. Eye sruall, 6 in head. Scales small. Lateral line complete, decurved. Dorsal slightly behind ventrals. Dusky bluish above ; everywhere with dark points. A black spot at base of caudal. Head 4 ; depth 4-ld. D. 8 ; A. 7 ; scales 10-56-8; teeth 4-4. L. 7 inches. Lake Tupataro, Guanajuato, Mexico (west of the Sierra Madre). (Jordan, Proc. U. S. Nat. Afr-« i«ro w.o s 15C CONTRIBUTION'S TO NORTH AMERICAN ICHTHYOLOGY - IV. 182. II. iHH-hal:* A-:.— Silvery Minnow. I'.ody elongate, companit ivcly slender. Head moderate, rather .short, tin- profile evenly curved. F\ e large, rather longer than mu/y.le, about 4 in head. I'pper jaw heavy; lower jaw thin. Scales large and silvery. Lateral line deeiirved, ll'-ll large scales in front of dorsal. Olivaceous green above, translucent in life; sides clear silvery, with bright reflec- tions. Fins unspotted. Head 4; depth 4 1. D. 8; A. 7; teeth 4-4; scales .~)-;;,S-l. L. .">-7 inches. A graceful minnow, abundant in most streams from Xew -lersey to the Upper Missouri and southward. As here delined, more than one species may be included; but, if so, the authors are unable to distinguish them.) (Aji.-isM/, Ainrr. Journ. Sui. Arts, 18.">f>, 224; Giinthcr, vii, 184 : Hytognalhus argyrtfis, <>, 182, 2(>l>: Hi/buy nath it* mjiua (iiinthcr. \ii. !.-'.">: Hybognathue onmerinus Cope, Proc. AUKT. 1'liil. !Soc. Phila. l~7u. 4iii'i : lli/h-xjiiatltiix (iri/iii Hi* Jordan, Xi8S).) 183. II. aiiiartlS (Grd.) Jordan. Head very short, small and blunt; front convex rather than de- Q elivous, as in If. nuchalis. Suborbital bones rather narrow, about as in 11. nuchal in. Scales moderate, 1C iu front of the dorsal. Coloration of H. )npot at ha M- of caudal. Fill* pale yellow, unspotted. Head .V in length, \\ilh caudal I'm; depth a little more. D. 8; A. 7 or S; >eales 7-11-1. L. _;• inches. Llano Kiver, Texas." (Coy;r, MSS.) II. EII^I ol;rni:i! us ('.>])<•. Similar to //. /la i-i/iinnix, Imt with larger scales. Ventral fin origi- nating a little in advance of the first dorsal ray. Eye larger a little 31. CYPRINID^E HYBOGNATHUS. 157 less than one-third the length of the head and a little less than the in- terorbital width. Ventral flu nearly reaching vent. Color dusky, with ji black lateral band. Fins plain. Head 5 in length, with caudal ; depth the same. D. 8; A. 8; scales 5-34-3. L. 2£ inches. Medina Eiver, Texas. (CopCj MSS.) aa. Suborbital boucs short and deep. 1§6. 19. pBacitus Grd. Head short and bluntish. Body stoutish. Eye small, shorter than snout, about 5 in head. Scales moderate, about 10 in front of the dor- sal. Size comparatively small. Grayish above, silvery below. Head 4f ; depth 4£. D. 8; A. 7; Lat. 1. 40; teeth 4-4. Mississippi Valley to Utah. (Possibly two species are here included.) (Girard, Proc. Acad. Nat. Sci. Pliila. 1856, 182: Hylognathus nuchaUs Cope, Proc. Araer. Phil. Soc. Phila. 1874, 6(5: Hybognathus nuclialis Jordan, 289; probably not of Agassiz.) aaa. Suborbital bones unknown; small species of the Texan region. IN1?. II. episcopus (Grd.) Jordan. Slender and graceful, fusiform in profile, and compressed, with the back slightly arched. The head is large, forming about the fifth of the length. Eye large and subcircular, the diameter 3i in head. Eins moderate. Scales large, the lateral line following the middle of the flanks. Dusky above, a blackish band along the sides, ending in a dusty blotch at base of caudal. Fins unmarked. Scales with fine black dots. D. 8; A. 8; Lat. 1. 39. L. 3 inches. Kivers of Texas. (Girard.) This or some very similar species occurs in Southern Illinois. (Forbes.) \ (JDionda episcopa, serena, texensis, papalis, argentosa, and chrysitis Girard, Proc. Acad. Nat. Sci. Phila. 1856, 177-178.) 1§§. II. fltivaatilis (Grd.) Jor. Form, size, and coloration of H. amarus, but the mouth and eye smaller and the scales smaller. D. 8; A. 7; Lat. 1. 40; 1C scales before dorsal. Snout tubercnlate in spring males. New Leon. (Girard.} (AJgoma fluviatilis Grd. Proc Acad. Nat Sci. Phila. 1856, 181.) ** Body short, deep, compressed, the depth about two-sevenths of the length. 1§9. H. mclanops (Grd.) Jor. Head moderate, 4-| in length. Snout rounded. Eye medium. Black- ish above; sides smoky, with black dots; a black spot at base of caudal. Depth 3£. D. 8; A. 7 ; Lat. 1. 43; teeth 4-4. L. 2£ inches. Eio Grande region. (Girard.) (Dionda melanops and coucM Grd. Proc. Acad. Nat. Sci. Phila. 1856, 178; Jordan, Bull. U. S. Geol. Surv. iv, No. 2, 402.) 158 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 78.— COL.ISCUS Cope. (Cope, ILiyd.-n'.s Geol. Surv. Wyom. 1872, 437: typo Coliscus parietalis Cope.) This genus differs chietly from Hybognathus in having the lateral line incomplete or obsolete. The mouth is oblique, and the dorsal fin in advance of the ventrals. (X»M»?, deficiency; in allusion to the incomplete lateral line.) 190. c. parietalis Cope. r.ody moderately elongate. Head wide, especially behind. Muzzle obtuse. Lips equal. Mouth descending obliquely, the maxillary not quite reaching the orbit. Eye 3| in head. Scales small, the tubes of tin- lateral line present on 7 of them ; 14 in a transverse series. Dorsal fin midway between snout and caudal. Suborbital bones slender. Col- oration silvery, unspotted. D. 7; A. 8; Lat, 1. 42; teeth 4-4. L. 2-3 inches. Missouri liiver at Saint Joseph. (Cope.} (Cope, Geol. Surv. Terr. Wyom. for 1870, 1872,437; Jordan, 289.) 79.— PI.TIEPEIALES Rafinesque. Fat-heads. (Rafinesque, Ichtli. Oh. 1820,52: typo I'imephales promdas Raf.) Body short and stout, little compressed. Head short and rounded. Mouth small, inferior; upper jaw protractile; no barbel. Teeth 4-4, with oblique grinding surface, usually but one of the teeth hooked. Dorsal over ventrals, its first (rudimentary) ray separated from the rest by membrane. Anal basis short. Intestinal (*!inal elongate. Peritoneum black. Pseudobranchiai present. Scales rather small. Lateral line incomplete. Size small. (-£//iA£?, fat; xs-' : Hyborhynchv* i>('rxjii<-niiK Grd. Proc. Acad. Nat. Sri. Phila. l~."itl. \-~>: Ili/tiiii/iiiitliiix j>< rxpicnux Giinthcr, vii, 185.) of month \vilh a iniiiut.', thickish liarln-1. t '.it II. Bapercf liosns Cope. I lead broader, more ridged above. Caudal and anal fins more dusky ; otherwise like I!M- laM, I'roiu which it may be distinguished only by the presence of the small barbel. With the last, equally widely distrib- uted, and even more abundant. Probably a variety. i ,.|i.-. Join 11. Arutl. Nat. Sci. Pbila. 1868, 234; .Ionian, 289.) 81.— EXOGL.OSSUUI Kalincsque. Cut-lips. (nafiiicody moderately elongate, little compressed. Mouth peculiar, the mandible being contracted and incurved, its outline strongly three- lobed. This a})})earance is due to the fact that the dentary bones lie close together, parallel, and are united throughout their length, instead of forming a broad arch, as in all other Cyprinoid lishes. The lower lip is represented by a broad lleshy lobe on each side of the mandible. l"p- perjaw not protractile. Upper lip thick, somewhat plicate. IMiaryn- geal bom-s small. The teeth hooked, without grinding surface, 1, -1—1,1. Scales moderate. Lateral line complete, l-'ins without s])ines. Dorsal slightly behind ventrals. Anal rays 7-8. Isthmus broad. (Jill-rakers weak. Pseudobi-anchia- present. Air-bladder normal. Alimentary canal short ; peritoneum white. Size moderate. One of the most strongly marked genera of Ci/in'iniIK -/<>!»•. I5ody rather slont, little compressed. Head large, broad and llattish above, with tumid cheeks. Mouth moderate, slightly oblique, the end of the maxillary not reaching the line of the orbit. Upper ja\v longer than lower. Scales rather crowded anteriorly, those in front of the dorsal sjnall. ( 'olor olivaceous; smoky or dark above ; a blackish bar behind opeicle, and a dusky shade at the root of the caudal in the young; fins unmarked, Head I; depth 41. I>. s;.\.7: scales s-."i;;-5; teeth 1. 1-1, 1. L. (! inches. YYeslerii New York to Virginia: abun- dant in the Su-i|iiehanna I'.asin, but not widely distributed. Oneofthe most singular of the ('///;/•////l> •'•> liifi-rniitiis <'<>pr, Cypr. 1'rnii. 18GG, 384.) 2OO. II. m:i< ui:it;i Hay. I'.ody long and slender, slightly elevated at the dorsal, MMiiewhat compre-sed. Head llatlened above. Snout rounded. Mouth small, terminal, slightly ohli<|'ie, maxillary not reaching to opposite eye. Eye 'Chriope Jordan, Bull. I[ay«lm's <;••..!. Sniv. Terr, iv, 1878, 787: type Hybopsie Cope, (xpeia, want ; ox)), pore.) 31. CYPRINIDJE CLIOLA. 1G3 equal to snout, 3£ in head. Dorsal slightly behind ventrals, nearer snout than base of caudal. Lateral line with pores on 8 or 10 scales only. Straw-color 5 a narrow dark dorsal baud, and a dark streak on each side of anal. A plumbeous lateral band, and black specks on each scale. A black spot as large as the eye at base of caudal. Head 4£; depth 5. D. 8 5 A. 8 5 scales 5-38-3 ; teeth 4-47 with grinding surface. L. 2£ inches. Chickasawha River, Mississippi. (Hay.} (Hay, Proc. U. S. Nat. Mus. 1880, 505.) 2O1. II. Iaetea*o<9on Cope. Body moderately stout, the back compressed and somewhat elevated. Head rather pointed, the muzzle acuminate. Mouth oblique, the lower jaw projecting, the upper lip opposite the upper rim of pupil. Maxillary extending to opposite front of orbit. Thirteen scales in front of dorsal. Eye 3 in head. Color olivaceous. A blackish dorsal band. Sides with a leaden or dusky band. D. 8 5 A. 8. Scales 5-36-3, the lateral line extending about half the length of the body. Teeth 4-4, often crenate. L. 2J inches. Michigan and Wisconsin. (Albitrnops hcterodon Cope, Proc. Acad. Nat. Sci. Phila. 1864, 281 : Hybopsis Uetcrodon Cope, Cypr. Peiin. 382 : Leuciscus heterodon Giiuther, vii, 261 : HemUremia heterodon Jor- dan, Man. Vert. 303.) 84.— CLIO&A Girard. Silver Fins. (Codoma, Cyprinella, Montana, and Hudsonius Girard ; Pliotogcnis arid Hybopsis Cope; Graodus Giiuther; Erogala Jordan.) (Girard, Proc. Acad. Nat. Sci. Phila. 1856, 192: type Ceratichthys vigilax Bd. &Grd.) Body ovate, oblong, or elongate, usually compressed. Mouth normal, usually rather small. No barbels. Scales various, commonly large, often closely imbricated. Lateral line complete, usually decurved. Dorsal fin generally more or less behind ventrals. Anal short or rather elongate. Teeth 4-4, or 1, 4-4, 0, or 1, 4-4, 1* (1, 4-4, 2 in one species), hooke/1, with or without grinding surface, the edge often more or less serrate. Intes- tinal canal short. Peritoneum mostly pale. Males in spring usually prickly, with the fins charged with red or white pigment. A very large group of small fishes, usually brilliantly colored ; abundant in all our Southern and Eastern rivers, and extending southward to Western Mexico. t All are American. (A coined name.) * Said to be 1, 3-3, 1 in oue species, C. colitis. If this be true, the latter species will form the type of a distinct genus, Tiaroga Girard, Proc. Acad. Nat. Sci. Phila. 1856, 204 : type Tiaroga colitis Girard. (A coined name.) t(«.) C. alia Jordan. Body moderately elongate, compressed, deep, the back somewhat elevated. Head short, somewhat depressed above, moderately pointed. Eye moderate, shorter than snout, 5-6 in head. Mouth medium, oblique, terminal, ll'J4 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. The species may be divided as follows :* - ales not especially deeper Ilian long; not closely imbricated. 'Teeth 4-4 j >pecies of small size, t Teeth with grinding surface more or less developed. (HYBOPSIS Cope, nou Ag.) (a.) .Scales in tlir la I mil Hue more than 4."> alia. saUa'i. a. Scales in the latmil line 43 or 44 tudltana, lauroccpJtalu, iKvmaturu. aa. Scales in the lateral line 32-37. spedruncula, indiila, frelensis, longiroslris, straminca. voliH-diii, microstoma, llncolaia, miseuriensis, procne. tt Teeth without grinding surface. (CLiOLA.) I*. A black spot on anterior edge of dorsal and one at the base of the caudal. vigilax. bb. No black spot on anterior edge of dorsal clilora, nigrotceniata. feet h t \vo-ro\ved. t Teeth without grinding surface /. colritis, stunt. tf Teeth with grinding surface more or less developed. (IlunsoxifS Grd.) salitdana, slorcriana, hudxonitt, cnryopa. $$ Scales deeper than long, very closely imbricated along sides of the body. Te.'th4-4. t Edges of teeth entire. (CoDOMA Girard.) t Teeth with grinding surface developed iris, jngalis. tt Teeth without grinding surfaee. a. Dorsal lin inserted notably behind ventrals ; head very short and blunt, al- most round ritlata, ornata. aa. Dorsal fin inserted directly over ventrals; head moderate, subcouic. calliscma. l!n- premaxillary on th.- level of the pupil, the maxillary not reaching the front of the pupil. Jaws e(|ual. 1'reorbital large. Scales not closely imbricated, 19 in front of dorsal lin. Dorsal over ventrals. Caudal peduncle deep, lilnish, sides silvery, lins plain. Head 4£; depth :i£. D. 8; A. 8; scales 6-4(3-4 ; teeth 4-4, with narrow grinding Mirface. Lake Tnpataro, Guanajuato. (IInil»(»thi* altim Jordan, Proc. U. S. Nat. Mus. 1879,301.) (/<.) ('. mill,!/ ((Jiinther) J. & G. Caudal ]ieduncle not quite twice as long as deep. No barbels. Snout < ilil iiscly conical, longer than the eye, which is one-fifth the length of head, rpper ja\\ slighi ly o\ erlapping tin- lower. Maxillary not extending to < ye. I>i>r>a! immediately behind ventrals. Fins short, r.rownish green above, minutely dotted with black along the sides. Head 4; depth '.}%. D. 7; A. C; Lat. 1. 54: te« th 4-4, long, (iirveil, \\ilh grinding Mirl'ace. Intestinal canal with lew convolutions. I,.:1.' inclio. ( 'iicrnav.-H'a, Mexico, (diiiillitr.) r/x milliri (iiinthrr, vii, 484: Hndxmtitix xaUn'i .Toi'dan, 1'roc. 1'. S. N:it. M'us. !-;;». 226.) (c.) C. iir/mlii -nint'1 (Giintlier) .lor. I'.ody oblong, snout obtuse, convex, hmgi-r than lhei-\.-. l-:\.- I' in In-ad. Mouth subinferior, small, t he upper jaw the' longer, max- illary not reaching front of orbit. A black lateral band. Head 4J ; depth 5. D. 8 ; A.-: scales 6-35-3. Teeth proi.aid\ 4-4, although only 2-2 are present in one of the typical examples, and none at all in tin1 others ; no c\ii!ent grinding surface. L. 4 iliclie^. Al'i-co. Mexico. ruiiilif-t iiiip-nlii n'hi/ir: Ciinthcr, \\\, \~~> : i'l'mlii ni. D. 8; A. 7; scales 7-44-4; teeth 4-4, little hooked. L. 3 inches. Michigan to Indiana. (II fuditontw Cope, Trans. Amer. Phil. Soc. Phila. 1800,381: Leuciscus tuditanus (iiintlirr, vii, 2O3. C. tauroccphala (Hay) J. & G.— Bull-head Minnow. r.ody stout, somewhat compressed, broad and flat above, with deep caudal peduncle. Head broad and flat above, with an angle at the temporal region. Muzzle broad and obtuse, less truncate than in ILy- lorliynchiis nottititx. Mouth rather small, horizontal, terminal, the jaws about equal, maxillary not reaching to opposite anterior margin of eye. I : \ c large, 3.V in head. Dorsal inserted above veutrals, nearer snout than caudal. Scales before dorsal small, in about 27 series. Dusky yellowish; sides silvery, with an obsolete dark lateral baud, which ter- minates in a black spot; a black spot on anterior rays of dorsal flu. Depth 4.1 ; head 4}. D. 8; A. 7; scales 8-43-4; teeth 4-4, with grind- ing surface. L. 3 inches. Chickasawha River, Mississippi. (Albuntops tauroccplialus~B.oy, Proc. U. S. Nat. Mus. 1880, 503.) 2O1. C. hscinattira (Cope) J. & G. Head moderate, the muzzle little obfcise. Mouth larger, terminal, oblique, the maxillary reaching the orbit. Eye 3.J in head ; temporal re- ion rounded. Scales rather small, 21 rows in front of the dorsal. Lateral line slightly decurved. Plumbeous above; head blackish; a taint dusky lateral baud, ending in a dusliy spot at root of caudal fin; caudal lin dull red; fins otherwise plain. Head 4; depth 4*. D. 8; A. 7; scales 7-44-4; teeth 4-4, little hooked. L. 3 inches. Michigan to Illinois; not very common. (/////m;i>/\ liii-iiinhinn Cope, Cypr. IVnn. oAi, 18GG: Lenctxrn>i lttrm«tunt* Giintber, vii, aa. Srjilrs in i In' I;itcr:il liin- :'.-J-:'.T. >. <'. s:>4M-|9-iiiic:iIa (Cope) J. &, G. Mn.lv elongate. Head large and rather ilal, nearly as broad as dec). i;\<- l;n-c, ;; in head. Muxzle remarkably thick. Mouth slightly ob- lique, Hie maxillary reacliing the eye. Fifteen rows of scales in front of dorsal. ( >li\ aceons, silvery white below; a leaden band along the sides and a conspicuous black spot at base ol' caudal; head dusky; margins of scales aliove lateral line, as well as bases of dorsal and anal fins, blackish; r.ectorals, ventrals, dorsal, and anal more or less orange in 31. CYPRINID^ CLIOLA. 167 life. Head 4 j depth 5£. ' D. 8 j A. 9 ; Lat. 1. 37 ; teeth. 4-4. L. 3 inches. Headwaters of Holston Eiver. (Cope.} (Hybopsis spcctrunculus Cope, Journ. Acad. Nat. Sci. Phila. 1868, 231. ) 206. C. nuMSa (Forbes) J. & G. Head narrow. Mouth inferior and horizontal. Lateral line anteriorly deflexed. Eye large, 3 in head, rather longer than muzzle. Fourteen scales before dorsal. Color very dark ; a dark lateral baud from muzzle to base of caudal ; fins all plain. Head 4£ ; depth 4. D. 8 ; A. 9 ; scales 5-37-3; teeth 4-4, little hooked. L. 2£ inches. Eock Eiver, Illinois. (Albitrnops -nuMlus Forbes, Bull. Ills. Lab. Nat. Hist, ii, 56, 1878.) 207. €. ffVctcnsas (Cope) J. & G. Body slender and compressed, resembling Minnilus. Head convex between orbits. Mouth quite oblique, the middle of the premaxillary being opposite the line of the pupil 5 maxillary not reaching to orbit. Eye 3} in head. Seventeen rows of scales in front of dorsal. Lateral line decurved. Olivaceous ; a dark median dorsal band ; a plumbeous silvery lateral shade; cheeks silvery; a dark spot at base of caudal; fins plain. Head 4; depth 5. D. 8; A. 8; scales 6-35-3; teeth 4-4. L. 2i inches. Michigan to Illinois. (Hybopsis frctensis Cope, Cypr. Penn. 382, 1866.) 2O§. C. longaroslris (Hay) J. & G. Form of Ericymba, buccata. Head rather small. Eye shorter than snout, 4 in head. Upper jaw rounded, considerably projecting beyond the lower jaw. Mouth rather large, horizontal, maxillary extending to opposite anterior margin of the eye. Scales large ; about 12 large scales in front of the dorsal. Origin of dorsal midway between tip of snout and base of caudal, directly over veutrals. Pectorals not reaching ven traLs; the latter to vent. Straw-color, with an obsolete lateral band and a narrow dorsal streak ; fins dusky. Head 4^. D. 8; A. 7; scales 4-3G-3 ; teeth 4-4, with grinding surface. Chickasawha Eiver, Missis- sippi. (Alburnops longirostris Hay, Proc. U. S. Nat. Mus. 1880, 504.) 2O9. O. slu'aasaaaaea (Cope) J. & G. — Straw-colored Minnow. Body moderately stout, little compressed. Head rather broad, with rounded angles. Mouth small, inferior, horizontal. Snout very obtuse. Eye large, 3 in head. Fifteen rows of scales in front of dorsal fin. Pale olivaceous; sides little silvery; usually a darker dorsal baud ; fins 1G8 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. all plain. Head I ; depth 5. Scales 5-3G-4 ; teeth 4-4. L. 2^ inches. Ohio Valley and la Ice region; generally abundant in small streams. One of the most insignificant of all our fishes. Cope, Proc. Acad. Nat. Sci. Phila. 1864,263: Hylopsis stra- iiitn<-nx Cope, C'ypr. i'l'iin. :!S1.) 21O. C. volucclla (Cope) J. & G. Body moderately stout. Ilead depressed, elongate, the vertex plane, the muzzle elongate. Fins more elongate than in most of the related speeies, i lie pectorals reaching the veutrals. Caudal peduncle slender. Eye 3^ in head. Olivaceous, a slight dusky lateral shade; no dorsal stripe; lins plain. Ilead 3^-; depth 4. D. 8; A. 8; scales 4-34-3; teeth 4-4. L. 2i inches. Michigan and Wisconsin. (Hybognathus rolnccllus Cope, Proc. Acad. Nat. Sci. Phila. 18G4, 283: Ilybopsis volu- ccllus Cnpr, Cypr. Penu. 381: Leuciacua rolucdlm Giiuther, vii, 2(JO.) 211. C. microstOBsm (Raf.) J. & G. Body elongate, the caudal peduncle not contracted. Mouth inferior, horizontal, small, the maxillary not reaching the line of the eye. Fins rather short. Eye large, 3£ in head. Fourteen scales before dorsal. I'reorbital bone much longer than deep. Olivaceous, translucent; a sil- very lateral baud, along which is a black speck at the origin of each tube of the lateral line. D. 8; A. 7; scales 5-33-2; teeth 4-4. L. 2£ inches. Virginia to Kentucky. (MiniiiliiN ni'uroxtiiiiuiH K'.-if. Idilli. Ob. 1820,47: Uybopsis lonyiccps Cope, Jourii. Acad. Nai. Sri. 1-liila. ItiW, 331.) 212. C. lincolata (A^assiz) J. & G. Body slender. Ilead short. Muzzle obtuse. Mouth slightly oblique, the jaws equal, the maxillary reaching to eye. Lateral line slightly de- curved. Olivaceous, sides silvery, with dark points along the lateral line, these especially abundant along the sides of the muzzle. Ilead \\: depili 1;. I). s; A. 7; scales C-34-4 ; teeth 4-4. L. 2 inches. Neltraska tt» Colorado. (Cope.) Osage River. ( J^\.s7~.) (.llliiiriin- liiiinlnliiN Agassi/, liiill. Mas. Coinp. Zool. l-!'>:!,'.l; /.i-m-'t^-nx tintvlattts Giin- iln-r, •- li, •.':'.ii: //^//(oy/.si.s- wi/lla C«>IM-, JIayilcn's (Jcol. «urv. Wyoiu. 1^?^, 438.) • 2i:j. C. mlssorlensls (Cope) J. & G. llody stout, with large head and thick caudal ])eduucle. Mouth sub- inferior, somewhat oblique, end of maxillary reaching line of orbit. Twelve scales in front of ! he dorsal I'm. Fins rather long. Eye large, 3 in head. Coloration very pale olivaceous; a silvery lateral band and some dusky specks at base of caudal; no dark dorsal line; lins plain. 31. CYPRINID.E CLIOLA. 1G9 Head 33; depth 4£. A. 7; scales 5-31-3; teeth 4-4. L. 2£ inches. Missouri to the Eio Grande ; probably abundant. (Hybopsis missuriensis Cope, Hayden's Geol. Surv. Wyom. for 1870, 1872, 437.) 214. C. procrae (Cope) J. & G. Body slender, with long caudal peduncle. Muzzle obtuse. Mouth horizontal, inferior, small. Thirteen rows of scales in front of the dorsal. Depth of caudal peduncle one-fourth its length. Eye large. Olivaceous ; a dark dorsal line and a plumbeous lateral band overlying black pigment; fins unspotted. Head 4|; depth 5^. Scales 5-32-3; teeth 4-4 ; A. 7. L. 2i inches. Delaware and Susquehanna Elvers. One of the smallest of the Cyprinidce. (Hyfiognathus procne Cope, Proc. Acad. Nat. Sci. Pbila. 1864, 279: Hybopsis procne Cope, Cypr. Perm. 385 : Lcuclscus procne Giiuther, vii, 260. ) tt Teeth without grinding surface. (Cliola.) ft. A black spot on the anterior edge of the dorsal and one at the base of the caudal. 215. C. vigiDax B. & G. Body subfusiform, compressed, not elevated. Head conical, bluntish. Mouth rather small, oblique, the jaws equal, the maxillary not extend- ing to the eye. Eye moderate, 3£ in head. Isthmus rather broad. Eins small ; the dorsal longer than high. Scales large, somewhat higher thau long, 10 in a transverse series from dorsal to ventral. Color brownish ; a dusky stripe composed of crowded dots along the lateral line ; a black spot at base of caudal, and one on the anterior rays of dorsal. Head 4; depth 4f. D. 9; A. 8; Lat. 1. 3G; "teeth 4-4, without grinding sur- face". L. 3 inches. Arkansas to Texas. (Girard.} (CeratichtJiys rigilax Baird & Girard, Proc. Acad. Nat. Sci. Phila. 1833, 390 : Cliola viyilax, vclox, and virax Girard, Proc. Acad. Nat. Sci. Phila. 1853, 192, and in U. S. Pac. R. R. Surv. x, 257,258. C. vivax is said to have scales "a good deal smaller", but no data are given. The types of all three are now lost.) M. No black spot on anterior edge of dorsal. 216. C. cZaSoi'a Jordan. Body slender, compressed. Head rather small. Eye large, about 3 in head, longer than snout. Mouth rather small, quite oblique, the lower jaw included when the mouth is closed, the maxillary scarcely reaching the front of orbit. Scales very large, about 12 in front of the dorsal fin ; the body entirely scaly except the thoracic region. Lateral line somewhat decurved. Dorsal fin beginning directly over ventrals. Color pale; back greenish; belly white; side with a silvery band ; no spots on fins and no dusky or plumbeous shading on the body, except 170 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. >omctimes a small dark spot at base of caudal. Ilead 4£; depth 5. D. 7 ; A. 7; scales 4-33-3; teeth -1-1, without grinding surface. L. 2$ inches. I'pper Missouri region. (Jordan. Mull, lluydeu's Geol. Surv. Terr, iv, 791, 1878.) " " 1 ••'•ill two-rowed. t Teeth without grinding surface. 217. C. cobitis (Grd.) J. & G. llody moderately elongate, subfusiforin, compressed. Head small, subconieal, depressed. Mouth small, terminal, oblique, without barbels, the maxillary falling far short of eye; lower jaw included. Eye mod- erate, high up, midway in head; isthmus very wide. Yeutrals slightly in advance of dorsal. Fins all high. Lateral line nearly straight. Body olivaceous, with dusky specks above; a black spot at base of caudal. Head 4; depth 4^. D. 8; A. 7; Lat. 1. C3. Teeth without grinding surface, 1, 3-3, Ijjide Girard.* L. 2^- inches. Eio Gila. (Girard.) ( Tiarofja colritis Girard, Proc. Acad. Nat. Sci. Philn. 185G, 204, aiid U. S. Mcx. Bound. Surv. Ichth. (JO : Lciiciscus colitis Giinther, vii, ^47.) 21§. C. sinia (Cope) Jor. & Gill). Body robust. Head short and broad, with short, decurved mu/./.le. Mouth large, oblique, the upper lip below the level of the pupil, the maxillary extending past the front of orbit. Eye moderate, 4} in head. Fins lar-e, the dorsal well behind ventrals. Coloration entirely silvery, brightest on the sides. Head 4£; depth 4}. D. 8; A. 9; scales 8-35-4, L'2 series in front of the dorsal iin ; teeth 1, 4-4, 1. L. .'4 inches. Kio Grande at San Ildefonso, New Mexico. (Cope.) (AUnn-nrlhix Kimiis Cope, Zool. Lieut. Win M-ler's Expl. W. lUOth Mt;r. v, (149, 1870.) U Teeth with <;riiidiii^ .surfjicc more or less . C. s:ilai«laiia Jor. vV MIM.M. Jiody elongate, but less so than in (\ Ntorrridna, moderately com- j.ressed. Caudal peduncle, long. Head large, rather heavy and gib- lions forward, the mux/.le rounded in profile. Eye large, 3\ in head. Month mnderatr. Miltinf'erior, the maxillary not reaching to the eye. Scales lar-c. thin and loose, about fL'in front of the dorsal Iin. Lateral line somewhat decurved in front. Fins rather small, pectorals not reach- ing tn vent i a I -. t In- latter not to vent. Coloration pule olivaceous, nearly ' If this number of teeth i^ normal and not merely line t.i aeeident, this species of (•(.lirse due, nut lielun^ to <'liol*;.',>* l-l; teeih \-[ (said to be 1, 4-4, 1 in young specimens), with rather narrow grinding surface. L. 2i inches. Mis- souri River and Arkansas River. (Cope.) i Jiii/tilix Copr, I lav ilt-n'.s (Ji-ol. Surv. Wyoin. for 1^70, 1^7'J, 4:>9.) \\iilmiit ^rimlin.i; siirt'.-n-i-. a. J)or>:il I'm iiiM-rli-d notably behind vi-nlnils ; brad very short anil blunt, al- IIHI-! ronii'l. <'. vittafa (Crd.) J. & G. I'.ody I'ather stout, heavy anteriorly, with long caudal peduncle; the, back not arched. Head blunt and heavy, l»nt less gibbous than in C. oniti/n. Month moderate, quite oblique, the maxillary not reaching to the eye. Kye rather small, nearly ."» in head. Scales rather small. * Girard, Proc. Aca-1. \a t . Sci. Phila. 1856, 194 : type Codoma vittata Grd. (A coin. .1 name.) 31. CYPRINHLE — CL10LA. 173 Fins low. Lateral line somewhat decurved. Color dark above, below this a silvery baud, and below this a dusky shade ; fins in the typical specimens plain. Head 4; depth 3|. D. 8; A. 85 Lat. 1. 53. L. 3 inches. Valley of Mexico. ( Codoma vittata Girard, Proc. Acad. Nat. Sci. Phila. 1858, 195, and U. S. Mex. Bound. Surv. Ichth. 53.) 226. C. ornata (Grd.) J. & G. Body stout and compressed, the head very blunt, thick, and rounded. Month small, nearly horizontal, the jaws equal. Eye large, anterior, 3f in head. Scales deep, closely imbricated, the lateral line decurved. Dorsal a little behind ventrals. Fins all rather small. Snout prickly in the spring males. Color dark ; sides with about 8 more or less conspicuous cross-bars ; fins all with the middle part dusky or black, the tips milk-white, the pectorals and the anal notably so. Head 4J; depth 3-1. D. 8 ; A. 7 ; Lat. 1. 39 ; teeth 4-4. L. 2-J inches. Chihuahua. (Codoma ornata Girard, Proc. Acad. Nat. Sci. Phila. 1856, 195, and U. S. Mex. Bound. Surv. Ichth. 53.) aa. Dorsal fin inserted directly over ventrals ; head moderate, subconic. 22?. C. caSBisema Jordan. \ Body rather elongate, fusiform, compressed. Head elongate, the muzzle rather blunt, projecting over the moderate-sized, oblique mouth ; maxillary not reaching to opposite the eye. Eye moderate, 4^ in head. Scales firm, closely imbricated, 15 in front of the dorsal. Dorsal fin extremely high ; its height in the males one-fourth of the length of the • body, in the females somewhat lower ; its insertion almost directly over the first ray of the ventrals. In all the other similarly colored species of Cliola the dorsal is evidently behind the veutrals. Coloration brilliant, clear dark bine above, sides and below abruptly silvery; a blue lateral streak, much as in C. coerulea, bounding the blue of the upper parts, the •white pigment of the lower parts looking as if painted over the blue. Dorsal with a large black spot on its last rays above. Dorsal, anal, and caudal with the usual satin- white pigment at their tips ; these fins other- wise of a clear, bright ferruginous orange. Females slender and dull- colored. Head 4 ; depth 4f. D. 8 ; A. 8 ; scales 6-39-3 ; teeth 4-4. L. 2^ inches. Ocmulgee Eiver, Georgia. An elegant fish, allied to the species of Erocjala. (Episema caUisema Jordan, Ann. Lye. Nat. Hist. N. Y. 1876, 363 : Codoma callisema Jordan, Bull. U. S. Nat. Mus. xii, 52.) tt Edges of teeth more or less serrate or crenate; dorsal fin slightly behind ventrals. (Moniana Girard.*) * Girard, Proc. Acad. Nat. Sci. Phila. 1856, 199 : type Leutiscus lutrcnsis B. & G. (A coined name.) 174 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 228. C. gibbosa (Grd.) J. &. G. Body extremely deep and compressed, the back much arched, espe- peeially anteriorly. Head short, blunt and deep, the profile continuous from the snout to the occiput without angle. Muzzle short and blunt. Kyi- small, 3\! in head. Mouth quite small, very oblique, the upper lip on the level of the pupil, the maxillary not extending quite to the orbit. Scales large, the lateral line very much decurved. Dorsal fin well be- hind vent nils; lower fins rather large, the pectorals nearly reaching vent nils, the latter to vent. Bluish above; sides silvery; lower fins milky ; a more or less distinct black spot between the rauii of the lower jaw. Males tuberculate in spring. Head 4; depth 2|. D. 8; A. 9; scales 6-31-3; teeth 4-4. L. '2\ inches. Eio Grande. (MoniuiHt uilibHsa Girard, Proc. Acad. Nat, Sci. Pliila. 1856, '201 : Cyprinella complanata Jordan, Bull. Hayden's Geol. Snrv. Terr, iv, 3,6(35,1878.) 229. C. forbesi Jordan. — Forbes's Red-fish. Body oblong, elevated, strongly compressed, the back arched. Caudal peduncle rather slender. Head stout and deep, its upper outline de- pressed, the nape elevated, forming an angle, so that the profile is some- what concave. Mouth rather large, quite oblique, the lower jaw in- eluded. Eye small, 4 in head. Lateral line strongly decurved. Thir- teen scales in front of dorsal. Males profusely tuberculate in spring. Colors in life brilliant, steel-blue ; the lower region silvery ; the belly orange-red in the males ; a conspicuous violet-colored crescent behind the shoulders, followed by a crimson crescent; fins reddish, the anal and caudal blood-red ; chin without black spot. Head 3r; ; depth 3. I ). 7 ; A. 8 ; scales C-35-2 ; teeth 4-4. L. 2* inches. Streams of South- ern Illinois. Very near the preceding, but distinguished by the form of the profile and the coloration. ((',/, ,,-in, ll.i /,///.; Jordan, Bull. Ills. Slat.- I.al>. Nar. Hist, ii, 57, 187>\) 2:tO, C. l<'02BBGia (Grd.) J. &. G. P.ody rather short and deep, compressed, with long caudal peduncle. Head moderate, the snout subeonical, moderately pointed. Month rather lar:e, oblique, the maxillary scarcely extending to the orbit. I'.ye modeiate. I in head. Lateral line decurved. Head \[: depth .">A. I).!*: A. !»; Lai. 1. 10. L. :; \ inches. Rivers of Texas and Northern .Mexico. ( (Jii-iii-il.) (Miiiiiiiim Ii, ,IIIIHI, iniiipJninilti, ;md fritjidn Girard, PrOC. Acad. Nat. Sci. Phila. 1856, 199,200.) 31. CYPRINID.E CLIOLA. 175 231. C. lutrensas (B. & G.) J. & G. Body rather short and thick-set, the "back not greatly arched. Head rather heavy, the muzzle blunt. Mouth moderate, the jaws equal, the maxillary not reaching orbit. Lateral line decurved. Head 3| ; depth 3i. D. 7 ; A. 9 ; Lat. 1. 36 ; 12 scales in a transverse series. Arkansas and Bed Elvers. (Girard.) (Leuciscits lutrensis Baird & Girard, Proc. Acad. Nat. Sci. Phila. 1853, 391 : Moniana lutrensis and pulchella Girard, Proc. Acad. Nat. Sci. Pliila. 1856, 199, 200 : Leuciscus lutrensis Giiiitlicr, vii, 258.) 232. C. dcSacBOSa (Grd.) J. & G. Body elliptical, moderately compressed. Head shortish, rather blunt, the profile forming an even curve. Mouth moderate, oblique, the max- illary not reaching to the eye. Lateral line somewhat decurved. Eye moderate, 3-1 in head. Scales rather large. Head 4; depth 3|. D. 8; A. 8 j Lat. 1. 33. L. 2i inches. Streams in the Rio Grande region. (Gi- rard.) More than one species may be here included, but, if so, they can- not be recognized from Dr. Girard's descriptions. Of all of Girard's Moniancc the types of only lutrensis and proserpina can now be found. (Moniana deliciosa, proserpina, la'talilis, couclii, rutila, nitida, and gracilis Girard, Proc. Acad. Nat. Sci. Phila. 1856, 199-201.) 233. C. aurata (Grd.) J. & G. Body subfusiforrn, compressed, little elevated. Caudal peduncle rather slender. Head rather blunt and heavy. Mouth small, oblique, the upper jaw projecting, maxillary not reaching to the eye; upper lip below the level of the pupil. Lateral line little decurved. A dusky streak along sides. Head 3f ; depth 4. D. 8 ; A. 8 j Lat. 1. 37. L. 2£ inches. Piedrapainte, New Mexico. (Girard.) (Moniana aurata Grd. Proc. Acad. Nat. Sci. Pliila. 1856, 200.) • 234. C. iormosa (Girard) J. & G. Body elliptic, compressed. Head small, rather slender and pointed. Mouth moderate, oblique, the maxillary barely reaching orbit ; upper lip on the level of the pupil. Eye large, 4 in head. Lateral line de- curved. Scales small. Dorsal fin rather high. Head 4£; depth 3|. D. 8; A. 9; Lat. 1.49. L. 2| inches. Rio Mimbres, Mexico. (Girard.) If we may trust Girard's figure, this species is well distinguished by the small size of the scales. ( Moniana formosa Girard, Proc. Acad. Nat. Sci. Phila. 1856, 201.) 17G CONTKI15UTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. »* Teeth 1. 1-1,1. ft. Teeih whh edges more or less serrate or erenate (usually without grinding sur- laee). (('itiiriiii'Ilit (urard. *) c. Dorsal iiu \\iiliont conspicuous black blotch on its upper posterior rays. d. No conspicuous black spot at base of caudal. t. Body very deep, compressed, the depth forming about a third of the length. 235. C. iimbrosa (Grd.) J. & G. Body short, the back very much arched. Caudal peduncle robust. Head short and deep, bluntish. Eye large, 4 in head. Mouth moderate, quite oblique, the jaws about equal, the maxillary nearly reaching the front of the eye ; the upper lip on the level of the pupil. Lateral line decurved. Fins rather low. Coloration plain in spirits. Ilead 4£; depths. D.8; A. 9 ; scales 8-42-5. L. 3^ inches. Arkansas, etc. (Gi- rard.) (CiijirhirUn innbrosa Girurd, Proc. Acad. Nat. Sci. Phila. 1850, 197, and U. S. Pac. R. R. Snrv. x,2G(i.) 236. C. bitbaQiiia (B. & G.) J. & G. Form of the preceding, but the caudal peduncle slender. Eye large, 3J in head. Jaws equal. Lateral line decurved. This species appears to differ from the preceding chiefly in its larger scales. Head 4 ; depth 3. D. 8; A. 9 j scales 6-36-3. L. 3 inches. Bed lliver, Arkansas. (Gi- rard.) (Lciidscits lubnJinus B. & G. Proc. Acad. Nat. Sci. Phila. l1-."^, 391 : Cii]»-ini-Uii lula- liiiit Cirard. I'. S. 1'ae. h'. K'. Surv. x, 2U5 : C>Ji>rlndla brrkicithi Grd. Proc. Acad. Nat. Sri. 1'hila. l-r»i;, -JU7.) 237. C. ^eiiiiiisoiii (Grd.) J. & G I'.ody short and compressed, the back arched, but less so than in the preceding. Head small. Caudal pediiM^e moderate. Maxillary reach- ing nearly to eye. Eye moderate, :>A in head. Yentrals in advance of dorsal. Coloration plain in spirits. ]H>ad \\; depth 3. D.8; A. !>; Lat. 1. .'51. L. :M inches, ('ottonwood Creek, Ttah. ee. Li'dy .slendi rer, the depth ^^-1} in lengtli. 23N. <'. suavis(Crd.).T. & G. llndy short, compressed, the back slightly arched. Month oblique. Eye 4 in head. Maxillary not quite reaching eye. Scales moderate Lateral line gently curved. Coloration plain in spirits. " By its gen- eral form and appearance this species establishes a transition between tirard, 1'ro.-. .\.-:id. Nat. Soi. 1'liila. i-:.i;, r.n;: t\p.- f., ,i< ixcns bubaUnus Buiril & (Jirard. (I>atin ri//irinrll. C. calliura Jordan. P>ody elongated, compressed, elevated in the middle, the profile be- fore the dorsal curved. Snout projecting, forming a decided angle. Head convex above, densely tnbercnlate in the males. Muzzle rather pointed, overhanging the oblique month. Eye 4 in head, less than muz- zle and interorbital width. ])orsal fin inserted slightly behind ven- t ra Is. Lateral line strongly decurved, usually forming an abrupt flexure just in front of the ventrals. Color in spirits pale silvery, the dorsal and caudal blotches very strongly marked. Head 4f; depth 4. B. 8; A. S; scales 6-44-3 ; teeth 1,4-4, 1. L. 4i inches. Rivers of Alabama and Louisiana. riin lid cdUlitra Jordan, Bull. U. S. Nat. Mus. x, 61, 1877.) _//. No Conspicuous block Spol :it base of randal fill. !i(|iie, the lower jaw included, maxillary reaching to anterior rim of the orbit ; upper lip on a line with lower border of orbit. Dorsal fin \ery nearly opposite ventrals, greatly elevated, its height in the male more than one fourth the length; anal fin large. Lateral line little de- curved. Toloration in alcohol plain, except the conspicuous dorsal 31. CYPKINID.E — CLIOLA. 179 spot; probably brilliant in life. Head 4£; depth 3£. D. 8; A. 9; scales 6-40-4. Sugar-loaf Creek, Arkansas. (Girard.) (Cyprinella whipplei Girard, Proc. Acad. Nat. Sci. Phila. 1856, 198, and U. S. Pac. R. E. Sur«r. x,270.) f)(j. Teetli with, narrow grinding surface. (Photogenis Cope.*) 247. C. aiialostana (Grd.) J. & G.—Sih-cr-fin. Body moderately elongate, somewhat compressed, the dorsal and ven- tral outlines regularly and gently arched. Head rather short and deep. Mouth rather small, quite oblique, the lower jaw received within the upper when the mouth is closed. Eye small, 4J in head. Leaden sil- very, bluish in the males ; edges of scales dusky ; a dark vertebral line; a large black spot on the upper posterior part of the dorsal. Paired fins and lower part of belly, as well as the tips of the anal and caudal, and the front and upper parts of the dorsal, charged with clear satin- white pigment in males in the spring ; in full breeding dress the dorsal pigment with a greenish lustre ; no creamy band at base of caudal ; males with the head and front covered with small tubercles. Head 4| ; depth 4. D. 8 ; A. 8 ; scales 5-38-3 ; teeth 1, 4-4, 1, the edges more or less distinctly serrate. L. 4 inches. Pennsylvania and Central New York to Mississippi Valley ; abundant. (Cyprinella analostana Girard, Proc. Acad. Nat. Sci. Phila. 1859, 38: Luxilus Tccntuuki- ensis Kirtland, Bost. Jouru. Nat. Hist, v, 27 (not of Raf.) : Hypsilv.pis JccntucUensis Cope, Cypr. Pen n. 371: Leuciscus analostanus Giiuther, vii,25G: Plwtogensis spilopterus Copo, Cypr. Perm. 378: Leuciscus spiloptcnus Glinther, vii,254.) bb. Teeth with entire edges (in the adult). (Eroyala Jordan. t) ft. Teeth with a narrow grinding surface; anal short. 248. C. galactura (Cope) J. & G. — Milky-tailed Shiner. Body fusiform, moderately elongate, not greatly compressed. Mouth rather large, jaws nearly horizontal, the upper projecting beyond the lower. Scales less closely imbricated than in the preceding. Lateral line little decurved. Eye small. Steel blue above, silvery below ; dorsal with a black blotch on its posterior rays; caudal fin conspicuously creamy yellow at base, then dusky. Males with the belly, paired fins, and especially the tips of the vertical fins charged with milk-white pig- ment in the spring, the head and front then covered with small tubercles. In high coloration the anal and caudal are sometimes pale reddish. Fe- *Cope, Cypr. Penn. I860, 378: type Photogenis spilopterus Cope = Cyprinella analo- stana Grd. (06f, light; yevvau, to be born.) t Jordan, Bull. U. S. Nat. Mus. xii, 20, 1878: type Photogenis stigmaturus Jor. (r/p, spring-time ; 70X0, milk.) 180 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. males olivaceous, obscurely marked. Head 4^; depth 4J. D. S; A. 8; .-scales ()-il-."> ; teeth 1, -4-4, 1, usually with entire edges. L. 5-G inches. Ciiiulu'iland J liver to Savannah Iviver; abundant in the mountain streams. Known by its large size and the peculiar yellowish band across the caudal. (/////>-•;/. •/>/* i/.tiiftui-Hx Cope, Proo. Acad. Nat. Soi. Phila. 1867, 160 : Lcuciscus kentucki- (Jiiiitlicr, vi iilf>. €. curystoina Jordan. I '.ody elongate, compressed, tapering toward the snout and the long caudal peduncle. Head moderate, larger than in C. nivea, rather pointed, wide on top ; snout rather long. Muzzle large, quite oblique, the premaxillaries on the level of the pupil; upper jaw slightly the longer. Eye moderate. 3£ in head. Scales moderate, rather closely imbricated, but less so than in C. analostana. Pectorals not reaching ventrals, the latter about to vent ; vertical fins not especially elevated. Color olivaceous, the sides bright silvery, a round black spot, nearly as large as eye, at base of caudal; dorsal blotch rather faint; dorsal fin chiefly yellowish green, ferruginous above, the extreme tip milky white; caudal fin rusty, with milk-white tips; lower fins milk-white. Snout and front ill males tubercnlate ; minute tubercles on sides of tail. Head 4£; depth 4J. D. 8; A. 8; scales G-39-3; teeth 1, 4-4, 1, with narrow grinding surfaces, the edges of which are usually crenate. L. 3i-4 inches. Chattahooehee River. (Fhotogenis eurystomiis Jordan, Ann. Lye. Nat. Hist. N. Y. 1876, 356, exclusive of tho snialliT sjirciiucns mentioned, •which ar« HJiiinilim rowix/i/is; not Cndmna curyutoma Jor- dan, Bull. U. S. Nut. Mas. xii, 42= Minnilus zoitistius : Photof/eniv Icm-opus Jordan it Brayton, Bull. U. S. Nat. Mus. xii, 41, 1878.) a-»O. C. nivea (Cope) J. & G. liody regularly fusiform, the dorsal outline more arched than the ventral. Head conic. Muzzle obtuse, not project ing. Month nearly terminal, slightly oblique, maxillary reaching front of eve. Kye 3£ in head. Coloration very pale, a narrow bluish band along the caudal peduncle, forming a faint spot at the root of the caudal. Dorsal I'm in the males considerably elevated, largely dusky on its last rays, the rest of the tin creamy ; the tips of the dorsal, the tips of the caudal, and the whole of the anal with milk-white pigment. Males with the snout and ante-dorsal region covered with small tubercles. Head 4^ ; depth 5.^. I). S; A..S; scales !>-.'!; teeth 1, 4-4, 1, with narrow grinding sur- face. L. 2i inches, llasin of the Santee, North and South Carolina. (Hybopsit nivmu Cope, Proc. Aim-r. 1'liil. Sue. Phila. 1^70, 4(50: I'liotof/rnix iiirmu Jor- dan &, Braytnn, JS'ill. L*. S. Nat. Mus. xii, -JO.) 31. CYPRINIDJE CLIOLA. 181 Jill. Teeth -without distinct grinding surface. j. Anal fin short, of 8 or 9 rays. k. A conspicuous dark blotch on upper posterior rays of dorsal. 1. Adult males with the vertical fins chiefly red; a conspicuous black spot at base of caudal. 251. C. calSistia Jordan. Body rather stout and compressed, rather heavy forward, the dorsal outline considerably elevated. Head stout and rather blunt, its upper part flattish ; the nuptial tubercles not numerous, arranged in a few dis- tinct longitudinal rows, not scattered without order, as in related species. Mouth large, nearly horizontal, slightly overlapped by the heavy snout, the maxillary reaching nearly to the eye, the premaxillaries anteriorly en- tirely below the level of the orbit. Eye large, 3f in head. Scales large, not very closely imbricated, 16 in front of dorsal. Fins rather large, the height of the dorsal in males nearly one-fifth of length of body. Coloration dark and brilliant. Males with the back very dark steel- blue ; sides a clear silvery violet ; belly and lower fins satin- white. A heavy black blotch on posterior part of dorsal, extending downward and forming a horizontal bar at the base of the fin ; the rest of the fin ver- milion, except the milk-white tip. Caudal fin bright red, yellowish at base, milky at tip ; a broad golden vertebral band and a reddish lateral streak; a large, distinct, round black spot at base of caudal. Females olivaceous, with less black ; the fins dull reddish. Head 4i ; depth 4f . D. 8; A. 8 ; scales 5-40-3; teeth 1, 4-4, 1. L. 4 inches. Alabama Basin. (Pliotoyenis caUistins Jordan, Ann. Lye. Nat. Hist. N. Y. 1876, 337 : Codoma callistia Jor- dan, Bull. U. S. Nat. Mus. xii, 52.) 252. C. tricSairoistia Jor. & Gilb. Body rather slender, compressed. Head slender and pointed. Eye moderate, 3f in head. Mouth quite large, very oblique, the maxillary reaching the anterior margin of the eye, the premaxillaries on the level of the middle of the pupil. Lateral line considerably decurved, usually with an abrupt angulatiou between pectorals and ventrals. Nineteen scales before the dorsal. Fins" moderate ; dorsal well behind ventrals. Nuptial tubercles sparse on the head. Caudal peduncle and sides as far forward as the ventrals tuberculate in spring males. Males bright steel-blue above ; sides bright white ; a large black spot at base of cau- dal, precisely as in C. callistia; dorsal fin with abroad, dusky, horizon- tal band at base, the membrane of the last rays jet-black, the tip milk- white, the rest of the fin of a bright, pale vermilion-red ; caudal rosy, its tips white ; anal and ventrals milky. Females duller, but the black markings distinct. Head 4-1 ; depth 4^ j scales 6-42-3 ; teeth 1, 4-4, 1. 182 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. L. 3£ inches. Alabama l&asin ; ubuiidaut in clear streams, with the preceding and the next. (Cotfama trichrointia Jordan & Gilbert, Bull.U. S. Nat. Mus. xii, 1878, 50.) U. Adult males without red. m. A very conspicuous black spot at base of caudal. C. stigmatura Jordau.— Spotted-tail Minnow. Body elongate, fusiform, compressed. Head quite long, rounded above, the snout pointed. Mouth rather large, somewhat oblique, over- lapped by the narrow upper jaw. Eye small, 4£ in head; iris white. Maxillary reaching beyond nostrils; premaxillary on the level of lower edge of pupil. Scales large, closely imbricated, 20 in front of the dor- sal. Fins low, the dorsal rather behind veutrals, its height less than one-fifth the length of the body. Color pale, clear olive ; black dorsal spot not very distinct ; fins with their tips charged with satin- white pigment, otherwise plain ; a very distinct, large, oblong or quadrate jet- black spot at base of caudal, the color extending up on the rays. This spot is visible on all specimens, and is larger than in any other of our Cyprinidce; its length about one-third that of the head. First ray of dorsal dark in front; males with an obsolete black spot on the middle of the sides in front of the dorsal, as is often seen in Chartwinuhr, the head, etc., tuberculate in spring. Head 4J; depth 4*. D. 8; A. 8; scales 7-42-3; teeth 1, 4-4, 1. L. 4.} inches. Alabama and Mississippi; \ ery abundant. The largest species of this section of the genus and one of the most graceful. (1'liotofienin stigmatnrm Jordau, Ann. Lye. Nat. Hist. N.Y. 1870, 337 : Codoma »%wa- tura Jordan, Bull. U. S. Nat. Mus. xii, ~>2 : Litxiluschicasavensi/illny, Proc. U. S. Nat. Mus. 1860,506.) mm. No conspicuous black spot at base of caudal. 23-1. C. cscriilca Jordan. P.ody fusiform, somewhat elongate, moderately compressed. Head moderate. Snout rather pointed, overlapping the small, oblique mouth, maxillaries reaching nostrils, premaxillaries below level of pupil. Kye moderate, :',.\ in head. Scales firm, \~> in front of dorsal. Lateral line declined. Fins all high, the height of tin- dorsal nearly one -fifth the length of the fish; dorsal behind ventrals. Males with the snout ihickly tnl>ercnlate. Color bright steel-blue; the. sides and belly sil- very white ; a very distinct lateral band of a bright blue-green color, most distinct posteriorly, and forming a spot at the base of the caudal fin; dorsal blotch rather faint and diffuse; tips of dorsal, anal, and 31. CYPRINID^ CLIOLA. 183 caudal charged with satin-white pigment ; the fins otherwise all of a clear, bright yellow. Females and young with the markings obscure, the blue lateral band usually evident. Head 4^; depth 4f. D. 8; A. 8; scales 6-38-3; teeth 1, 4-4, 1. L. 3 inches. Alabama Basin. (Photogenis cceruleus Jordan. Ann. Lye. Nat. Hist. N. Y. 1876, 338: Codoma ccerulea Jor- dan, Bull. U. S. Nat. Mus. xii, 52, 1878.) 255. C. cBsIoristia Jordan & Brayton. Body short and deep, strongly compressed, the form elliptical, as in C. pyrrhomelas, but rather deeper. Head rather small and pointed. Mouth quite oblique, the maxillary not reaching the line of the orbit, the upper jaw projecting beyond the lower, premaxillary on the level of the pupil. Eye small, less than snout, 4 in head. Lateral line decurved. Fins moderate. Nuptial tubercles covering the whole body, except the space anterior to the ventrals and below the lateral line; those on the body much smaller than those on the head. Coloration dark steel-blue; a very distinct blue stripe along each side of caudal peduncle ; back clear green; lower part of sides abruptly milk-white; black dorsal blotch large, the lower part of the fin with bright pale-green pigment, the tip milky; caudal dusky, its tips milky, its base pale ; anal and veutrals milky, a faint dusky spot on last rays of anal ; iris white. Females slenderer and less brightly colored ; no caudal spot. Head 4; depth 4. D. 7; A. 8; scales 5-37-3 ; teeth 1, 4-4, 1. L. 3 inches. Saiitee Basin, South Caro- lina. (Codoma chlorislia Jordan & Brayton, Bull. U. S. Nat. Mus. xii, 21, 1878.) kk. No dark blotch on upper posterior part of dorsal. 256. C. zonata (Agassiz) Jor. & Gilb. Physiognomy of Ceratichthys dissimilis. Body elongate, not elevated. Head elongate. Mouth small, nearly horizontal, the maxillary reaching beyond line of orbit, the mandible somewhat projecting. Eegion in front of dorsal fin more or less bare of scales. Eye large, 3£ in head. Dorsal beginning opposite ventrals, nearer snout than base of caudal. Olivaceous silvery below; a broad, silvery lateral band, with dark specks ; sides of head with black specks ; a dark vertebral band. Head 4 ; depth 4^. D. 7 ; A. 8 ; scales 6-36-4 ; teeth 1, 4-4, 1. L. 3 inches. North Platte Eiver ( Cope) ; Osage Eiver (Agassiz)* (Alburmis sonatus Putnam, Bull. Mus. Comp. Zool. i, 9, 1863 : Photogenis piptolepis Cope, Hayden's Geol. Surv. Terr. Wyoin. 1870, 438 : Leudscua zonatus Giiutlier, vii, 253.) 184 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. jy. Anal fin long, of 10 or 11 rays ; lius high. 257. C. \;rtnir;i Jordan. Body moderately elongate, subfusiforin, heavy forwards. Head heavy, somewhat elongate, rounded above. Mouth large, oblique, the lower jaw included, maxillary reaching almost to orbit, preniaxillary oil level <>!' upper part of pupil. Eye large, 3J in head. Fins all rather low, the height of the dorsal fin, even in the males, only two-thirds the length of head ; caudal fin large. Color dark steel-blue ; silvery below ; a faint black spot at base of caudal; scales above dark-edged. Males with the fins mostly bright crimson ; the dorsal largely black at its upper posterior part ; dorsal, anal, and caudal fins with white pigment ; belly and bases of the lower fins likewise pigmented ; head, and caudal pe- duncle tuberculate in spring. Head 4; depth 3£. D. 8; A. 10; scales 6-39-3 ; teeth 1, 4-4, 1. L. 3 inches. Altamaha Basin, Georgia ; locally abundant. (Minnilits jr(v»urus Jordan, Proc. Acad. Nat. Sci. Pliila. 1877, 79: Codoma xcrnura Jordan, Bull. U. S. Nat. Mus. xii, 52.) 238. C. pyrrhomclas (Cope) J. & G. Body deep and compressed. Head stout, rather blunt. Mouth ob- lique, the jaws about equal, maxillary reaching front of orbit. Eye large, .">;: in head. Pectorals barely reaching ventrals, the latter to anal; dorsal fiu greatly elevated, its height in the male as great as Ifii .n 1 li of head ; caudal very broad and long, its peduncle stout and com- pressed; anal fin large and long. Coloration of the males dark steel- blue above; the scales darker edged; the belly abruptly milky white; head pale reddish; snout, tip of lower jaw. and iris scarlet; dorsal dusky at base, the usual large black blotch above, red in front, and broadly milk-white at tip; tips of the caudal milk-white, next to this a dusky creseent, a wide crescent of bright scarlet inside of the black, extend- ing into the two lobes of the fin; base of caudal pale; anterior region and sides of caudal peduncle with rather large tubercles. Females duller. Head 4; depth :!•'. ]). 8; A. 10; scales i\-:\r,-.\ ; teeth 1, 4-1, 1. L. 3] inches. Hantee Basin; very abundant. The most ornate of our Cyprinidce. » ^Phologenis pyrrhomelas <'<>i><'. 1'ruc. AHHT. Phil. Soc. rhil.-i. 1870,463: Codoma pyr- • Ji.nliin A Mrayl'.ii, Mull. I'. S. Nat. Mus. xii, 'Jv>, 1878.) 259. «'. li> |>s4>|o|»f<>r:i (( ;iiutliointed. .Mouth large, very oblique, the jaws 31. CYPRINIDJE MINNILUS. 185 just equal. Eye large, 3 in head, about equal to snout and to iiiterorbital space. Scales with the exposed surfaces very narrow. Lateral line much decurved ; 16 large scales before dorsal. Dorsal flu inserted en- tirely behind the ventrals, greatly elevated, its longest ray a little longer than head; anal fin also very high and very long, extending almost to base of caudal ; these fins somewhat lower in the females. Color sil- very; the dorsal blotch conspicuous; a distinct black caudal spot, smaller than eye and deeper than long ; sides with a silvery band which passes around the nose, below this a dusky band. Breeding colors un- known. Head 4^ ; depth 4. D. 8; A. 11; scales 6-35-3; teeth 1, 4-4, 1. L. 21 inches. Southern Georgia and Alabama. (Alburnus formosus Putnam, Ball. Mus. Comp. Zool. i, 9, 1863 (not Monlana formosa Grd.): Leuciscus hypselop terus Giinther, vii, 255: Photogenis grandipinnis Jordan, Bull. U. S. Nat. Mus. x, 62, 1877.) • §ff.— IHINNILUS Rafinesque. Shiners. (ff Notro}ns Kafinesque, 1818; Minnilus, Luxilus, and Pfawv/yras Rafinesque ; Hypsilepis Baird; Alburnellus and Alburnops Girard; Lythrurus and Hydrophlox Jordan.) (Rafinesque, Iclith. Oh. 1820, 47: type Mlnnilus dinemus Raf.) Body oblong or elongate, more or less compressed. Mouth normal, mostly terminal and oblique. No barbels. Teeth 2, 4-4, 2, sharp- edged or with a narrow grinding surface. Scales usually large, often closely imbricated. Lateral line complete, usually decurved. Dorsal fin inserted above, or more usually behind, the ventrals; anal fin short or somewhat elongate. Abdomen rounded. Coloration often brilliant, the males in spring usually with red fins and the head with small tu- bercles. A very large group of small fishes, especially characteristic of the fresh waters of the Eastern United States. Various attempts have been made to divide this group into natural genera, but the gradation from one type to another is very perfect. (English minnow ; French menuise; from Latin minus, small.) This group may be subdivided as follows : § Anal fin short, its rays 7-9 (sometimes 10 iu M. zonistius), * Scales large, 35-50 in the lateral line, t Teeth with the grinding surface more or less developed. } Species attaining a large size, with the scales along the flanks nearlytwice as deep as long, and so closely imbricated that the exposed sur- faces are very narrow ; back elevated and convex in the adult ; lower jaw included ; dorsal fin over veutrals (LuxiLUS Raf.). cornutus, selene. it Species of moderate size, with the scales short and deep, but less closely im- bricated than in the preceding ; body elongate, not much ele- vated ; month large, oblique, the lower jaw projecting; dor- sal tin inserted behind veutrals coccogenis, zonistius. 186 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. ttJ Species ..fMnall si/.e, \\illi the scales not much deeper than long, loss closely iinl>ri<-at<-i'fj>li. Dorsal inserted behind ventrals ........... ultijtitnnx, ig. ff. Anal iin moderate, its rays 10 or 11. g. Scales above lateral line in about 9 series .......... umbnililis. ]>«*, xiilliinx, percobromuf, m- bclltix, (Hiirntiix, riibriJri'Hx, j<»ir:(inttt<. /i/i. Ventral fins scan d\ n aching beyond front of dorsal. in i' rn }i 1 1 ri/j . * Anal fin slu.it, its rays 7-9 (rarely 10). * Scales I.-M-C . '.\rt-5Q in the lateral line. t Teeth \\ itb the gi hiding surface more or less developed. (Species attaining a lar.^e si/.e, \\ith llie scales along (bethinks nearly twice as deep as long, and so closely imbricated that the exposed sur- face- are \ i TV narrow ; back ele\ aled and convex in the adult male ; t lie lower jaw included; dorsal tin inserted direct 1\ npposhe \ entrals. i LvxUut K'af.*) II. roriniliis ! Miiehiih .1. A Or.— Shiner; Hnifm: Daoe. rltum:itr in (he \oiiii^, in the adult short, compressed, with the :iiitrrior dor-:d iv-ion much swollen and •jililmns. Head rather he.i\\, CMiii|ire»ed, 1'oiilided l)et\veell the eyes, the snout bllllltish. Mouth moderate, nearly hori/ontal, the jaws ni-arly equal, the lo\\er sotnev.hal included. Kve moderate, \~:> in head, maxillary scarcely i, I?: llitcli. ^Irom Latin /ur, light — "Sbiiier".) (:= Hypxiltpiii Baird.) 31. CYPKINID^E MINNILUS. 187 reaching front of eye, the premaxillaries below the level of the eye. Scales always deeper than long on the flanks, becoming extremely so in the adult. Lateral line decurved. Dorsal moderate, inserted directly over the ventrals in the young, thrown somewhat backward in the adult by. the growth of the postoccipital region. Pectorals barely or not reaching veutrals, the latter about to vent. Region in front of dorsal typically with about 23 scales. Coloration dark steel-blue above; the scales with dusky edges, the bases also dusky; a gilt line along the back and one along each side, these distinct only when the fish is in the water ; belly and lower part of the sides silvery, or bright rosy in spring males ; dorsal fin somewhat dusky ; other fins plain ; the lower fins all rosy in spring males ; head dark above ; a dark shade behind scapula ; lower jaw and region in front of dorsal to the tip of the snout covered with small tubercles in spring males; female and young fishes are plain olivaceous above and silvery below. Head 4£ ; depth 3|, varying much with age. D. 8 ; A. 9 ; scales 0-41-3 ; teeth 2, 4-4, 2, with rather nar- row grinding surface. L. 5-8 inches. Entire region east of the Rocky Mountains excepting the South Atlantic States and Texas; almost everywhere the most abundant fish in small streams. Its variations are great. The following forms are worth distinguishing by name. Var. gil>B»ai§ Cope. Sixteen scales before the dorsal fin. Anterior dorsal region in the males extremely short and swollen ; the base of the dorsal therefore very oblique. Michigan to Kentucky ; common. (Hypsilcpis cornutns g'Mus Cope, Proc. Acacl. Nat. Sci. Phila. 1867, 158.) Var. froaitalas Agassiz. Fifteen to eighteen scales in front of dorsal. Head heavy. Body less gibbous than in the preceding. Great Lake Region, etc. (Leuciscus frontalis and yracilis Agassiz, Lake Superior, 368, 370.) Var. cerasaaaus Cope. Sixteen scales before dorsal ; scales 6-40-3. Head 4 in length. Eye large, 3^ in head. Colors very brilliant, in high coloration entirely red. Roauoke River. (Hypsilepis cornutus cerasimis Cope, Proc. Acad. Nat. Sci. Phila. 1867, 159.) Var. COB'BBCltMS. Above described. The scales 22-25 in front of dorsal fin. Every- where abundant. (Cyprinus cornutus Mitcliill, Amer. Mouth. Mag. i, 324: Rypsilepis cornntm Cope, Proc. Acad. Nat. Sci. Phila. 1867, 158: Plargurus typicusaud bowmani Girard, Proc. Acad. Nat. Sci. Phila. 1856, 196: Plargyrus argentatus Girard,!. c. 212: Leuciscus cornutus Gimther, vii, 249: Luxilus chrysocephalus Raf. Ichth. Oh. 1820, 47.) 188 coNTRir.rTiONS TO NORTH AMERICAN ICHTHYOLOGY — iv. Y;ir. 4-y:iii<'tis Cope. S.-ales dt' the dorsal and ventral regions very small, 31-40 in front of tin- dorsal hn. Scales 10- 10-4. Coloration extremely dark ; bine-black above; iins ohietly black. Lake Superior. ri/ni/citx Cope, Proc. Acad. Nat. Sei. Phila. 1807, 1GO. ) 2O 1. JI. *t'leilC Jordan. I'.ody elongate, compressed. Head short and stont, rounded above. Month terminal, oblique, the lower jaw included. Mu/zle. blunt and short. Eye very large, 3 in head, wider than snout and than interor- bital space. Dorsal liu ven "high. Lateral line little decnrved. Dright steel-bine above, with a very distinct silvery band overlying a plum- beous shade ; a dark spot at base of caudal ; a dark vertebral line ; cheeks, belly, and iris white; Iins plain, probably red in spring. Head 4.]: depth 4i. Scales 4-40-3 ; teeth 2, 4-4, 2. Lake Superior. (Luxilus st Icnc Jordan, Bull. U. S. Nat. Mus. x, GO, 1877.) lecies of moderate size, with the scales short and doep, but less closely imbricated. than in the preceding ; body elongate, not much elevated; month large, oblique, the lower jaw projecting; dorsal I'm inserted behind vent nils. 262. JI. COCCOgenis (Cope) Jordan. — L'I (l-flnrl-cd Shiner. Body elongate, compressed, not at all elevated. Head straight and rather pointed. Mouth huge, very oblique, the premaxillary nearly on a level with the pupil, lower jaw projecting beyond upper, maxillary reaching past front of eye. Eye very large, 3A in head. About L'O scales in trout of the dorsal tin. ]>ack olivaceous; the scales dark-edged; belly and sides silvery, rosy in spring males; a dusky scapular band: a scarlet bar like a brand down the line of the preopercle : nm/./le and upper lip red : a red axillary spot ; outer half of dorsal black, lower halt' yellowish; outer part of caudal dusky, base paler : a taint lateral streak and a dark vertebral line; lower Iins white ; snout swollen and tnbereu- late in >pring males; females silvery, with only traces of red markings. Mead I : depth \\. Scales 7- H'-3 ; teeth 1', -1-1, 2. 1.. "• in. -lies. Cum- berland to Savannah Ifivers; abundant in the mountain streams. Hyptiltpis OOCQOgmieCope, l'\<«-. Acad. Nat. Sei. I'hila. l-:;._) .11. zociisfius . I'.ody rather stout, compivvxrd. the back somewhat elexatcd, the t'orm that ol'a young Mimtilii* i-nni H/I/S. Head heavy, broad and llattish abo\-e. the pi'olile eveidy drsceiiding. .Month large, but smaller than in <_-<>fro;i<-nix, obiiijin-. the ja\\s nboiit equal, the upper lip opposite the 31. CYPRINID^E MINNILUS. 189 middle of the eye, the maxillary reaching the front of orbit. K.ve very large, longer than snout, 3i in head. Scales not very closely imbricated ; 17 scales in front of dorsal. Lateral line strongly decurved. Fins mod- erate, pectorals scarcely reaching ventrals. Steel-blue above ; sides with considerable coppery lustre ; dorsal fin with a sharp jet-black horizontal bar about half way up, reddish in young fishes, the tips of the fin some- what milky, the base pale ; a round black spot nearly as large as the eye at the base of the caudal ; anal fin plain ; caudal fin dull ferruginous red, pale at base as in M. coccogenis, milky at tip ; back and sides with gilt lines, as in M. cornutits, the former becoming dark after death ; a faint red bar down the cheeks as in M. coccogenis ; a dark humeral bar; males with the snout tuberculate; females plain, so much resembling Cliola eurystoma, from the same waters, that the two species have been confounded. Head 3f ; depth 3§. Scales 7-40-3 5 teeth 2, 4-4, 2, with very narrow grinding surface on one or two of them. L. 4 inches. Chattahoochee River, the typical examples from Suwaunee Creek. (Codoma eurystoma Jordan & Brayton, Bull. U. S. Nat. Mus. xii, 42, 1878, excl. syn. (not Photogenis eurystomus Jordan): Luxilus zoniatius Jordan, Proc. U. S. Nat. Mus. 1879,239.) ttt Species of small size, with the scales not much deeper than long, less closely im- bricated; body oblong or elongate, little elevated ; month moderate, oblique or horizontal ; dorsal iiu inserted close behind veiitrals ; nuptial colors com- monly brilliant. (Albuniops Grd.*) 264. M. roseus Jordan. Body short and stout, little compressed. Head rather short, thick, bluntly rounded. Mouth moderate, slightly oblique, the jaws about equal. Eye large, nearly 3 in head, about equal to muzzle, a little less than the broad iuterorbital space. Fifteen scales before dorsal fin ; dor- sal fin high, directly over ventrals. Olivaceous ; scales dark-edged ; a broad plumbeous lateral band ; lips black ; a dark caudal spot; a dark vertebral line ; anal region dusted with dark points; cheeks and belly silvery ; males with the dorsal, anal, caudal, and pectorals mostly rosy red ; iris, top of head, and tip of snout red. Head 3| ; depth 4£. Scales 5-38-5 ; teeth 2, 4-4, 2. L. 2i inches. Xotalbany River, Louisiana. (Luxilus roseus Jordan, Bull. U. S. Nat. Mus. x, Gl, 1877.) 2{i5. M. rubs'icroceass (Cope) J. & G.—Red Fall-fish. Body moderately elongate, somewhat compressed. Head compara- tively long and rather pointed. Mouth rather large, oblique, the jaws about equal. Eye large-, as long as snout, 3^ in head, prernsixillary * Girard, Proc. Acad. Nat. Sci. Phila. 1856, 194: type Alburnops Wennius Grd. (Al- ~burnus; uty, appearance.) (= Hydroyh lox Jor. ) 190 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY -- IV. rather below pupil, maxillary reaching beyond front of orbit. Lateral line somewhat deeurved. Nineteen scales in front of dorsal. Dorsal in- serted somewhat behind ventrals. Females plain olivaceous. Males dark steel-blue, a dark lateral band of coaly punctulatious, which is usually distinct on the anterior part of the body, and passes through the eye around the snout; tins all rich, clear red, the dorsal crimson, the caudal pink, the lower fins scarlet; head pale red, the lower jaw Hushed as if bloody; eyes bluish or flushed with red ; a lustrous streak along sides; silvery jelow. In high coloration the whole body is more or less red. Males with the head and autedorsal region dusted with tine white tubercles. Head 4; depth 4£. D. 8; A. 9; scales 7-38-3; teeth 2, 4-4, 2, the edges of the grinding surface often serrate. L. 2.J inches. Headwaters of the Tennessee and Savannah Rivers. A sur- passingly beautiful little fish, abounding in rock-pools at the foot of cascades. ritbricrocpus Cope, Jonrn. Acad. Nat. Sci. Phila. 1868, 231 : Nijdrophlox rubri- croccus Jordan & Brayton, Bull. U. S. Nat. Mus. xii, 32, 1878.) 2G6. Itl. lutipinnis Jordan & Brayton. Body stout and rather strongly compressed, the dorsal region some- what elevated, the outline of the back sloping each way from the dorsal tin. Head short and rather deep, broad and fiattish above, the mu/xle moderately rounded. Eye rather large, 3j in head. Mouth rather large. but smaller than in the preceding, quite oblique, the maxillary reaching to orbit. Mandible included. Eighteen scales in front of dorsal. In life clear olive, with very intense green dorsal and vertebral lines ; an intense metallic blackish band along sides; below this the sides are bright silvery ; the whole body in the males bright, clear red, the color of red berries; fins all bright golden yellow; tip of lower jaw black. Head I1 ; depth 4|. D. 8; A. 8; scales 7-40-3; teeth 2, 4-4, 2. L. 3 inches. Oconee Jfiver, Georgia. luti;>i>nt'm .Jordan & Braylon, Bull. U. S. Nut. Mus. xii, 30, 1878.) II, chloroccplialus (Cope) .lor. &. Gilb. I'.ody stout, with deep caudal peduncle. Head broad, with descend- ing mn/./le. Month oblique, the maxillary reaching beyond line of orbit, premaxillary opposite lower margin of pupil. F.ye large, 3 in head. Intel-orbital space greater than mu/xle. Lateral line moderately de- curved. Sixteen scales in front of dorsal. . Color olivaceous, every- where dusted with blackish specks, which form a lateral band, which terminates in a dusky spot at base of caudal; green vertebral and lat- 31 CYPRINID2E MINNILUS. 191 eral lines j top of head and upper portion of cheeks metallic green ; males with the belly dark crimson, the whole body more or less flushed ; snout and autedorsal region tuberculate ; fins plain. Head 4 ; depth 5. D. 8 ; A. 8 ; scales 6-39-3 ; teeth 2, 4-4, 2 (1, 4-4, 1, according to Cope, but we find 2, 4-4, 2 in numerous specimens). L. 2 J inches. Santee Basin, in North and South Carolina. (Hybopais chlorocephalus Cope, Proc. Amer. Phil. Soc. Pliila. 1870, 461.) 26§. UI. chaliticus (Cope) J. & G. Aspect more clupeoid. Head broad behind. Occiput convex. Muz- zle acuminate, greater than interorbital width. Eye large, 3 in head, longer than muzzle, maxillary extending beyond anterior rim of orbit, premaxillaries opposite middle of pupil. Lateral line strongly decurved. Dorsal tin small. Olivaceous ; dorsal scales brown-edged ; sides and below pure white ; males with the lips vermilion ; a vermilion band through dorsal and one through anal fin. Head 4 ; depth 5i. D. 8 ; A. 8 ; scales 7-36-2 ; teeth 2, 4-4, 2. L. 2 inches. Yadkin River, North Carolina. (Cope.) (Hybopsis chillticus Cope, Proc. Amer. Phil. Soc. Phila. 1870, 462.) 2S9. M. chalyfoams (Cope) J. & G. Body moderately elongate, with rather abruptly elevated back and slender caudal peduncle. Head flat above, rather narrow, muzzle rather pointed. Mouth oblique, the lower jaw rather the longer. Lat- eral line decurved. Eye large, 3 in head. Eighteen scales in front of dorsal. Brownish above ; a broad, black, shining lateral band from muzzle to base of caudal 5 alight band above it on the muzzle; belly straw-colored, bright orange in spring males ; fins plain. Head 3|. D. 8 ; A. 8 5 scales 6-35-3 ; teeth 2, 4-4, 2. L. 2 inches. Delaware River, probably the smallest of the genus. (Cope.) (Hybopsis chalybcem Cope, Cypr. Perm. 1866, 383.) 27©. UI. chrosoanus Jordan. Form chubby, little compressed, the back somewhat elevated, cau- dal peduncle not much contracted. Head rather large, rounded above, the snout somewhat pointed. Mouth moderate, oblique, the upper jaw the longer. Eye 3^ in head, as long as muzzle. Scales everywhere large, 16 before the dorsal fin. Lateral line little decurved. Clear hyaline green in life, with blue reflections; belly, etc., clear silvery; a scarlet bar across dorsal, anal, and base of caudal ; a narrow scarlet band from upper edge of opercles straight to caudal ; below this a silvery band ; a row of black dots along the lateral line, forming a small, distinct spot at 102 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. l.ase (if caudal ; top of head and vertebral lino golden. Snout tubercti- late in males. Head 4J ; depth 5. D. 8; A. 8; scales 5-37-3; teeth i'. 1-4,2. L. 2.1 inches. Alabama Basin; very abundant in clear streams. A graceful little lish. ( Hj/6opn«oftro800MW Jordan, Ann. L\<-. N:it. Hi-t. X. Y. 1376, 333: Hydrophlox chrosomus .Ionian A: Itrayton, 1. c. 49.) 271. II. xaCHOCOpllJllus Jordan. Body rather short and deep, with thick caudal peduncle; back wide, not elevated, llead large, flattish and broad above, the snout rounded. .Mouth large, oblique, the jaws nearly equal. Eye very large, 2£ in head. Lateral line somewhat decurved. Thirteen scales in front of the dorsal. Dorsal Jin slightly behind ventrals. Dark olivaceous above, the scales being extensively dark edged ; a dark band along the sides of the caudal peduncle, which vanishes in black points along the sides of the body, reappearing on the head and passing around the snout ; a dusky blotch at base of caudal. Males without red markings, the snout swollen and tuberciilate in the spring. Head 4\ -; depth 5. D. 8; A. 7; scales 5-38-3; teeth 2, 4-4, 2. L. 2-£ inches. Georgia to .Mississippi. (Ifybopxis xasnoccphalua Jordan, Ann. Lye. Nat. Hist. X. Y. l>7t'>, 334.) 272. JH. plumlM-olus (Cope) J. & G. Body oblong, compressed, the back somewhat arched. Mouth oblique, the lower jaw slightly longer than the upper. Fins short. Eye large, 22. in head. Silvery, with bluish reflection ; top of head dusky ; a dark spot at base of caudal. Head 4^ ; depth Ij-J. D. 8; A. 9; scales (5-39-3; teeth 2, 4-4, 2. L. 3 inches. Saginaw lliver. (Cope.} (.•tlh nr in i/i.t /'//nnbcoliis Cope, Proe. Acad. Nat. Sci. Phila. 1804, 273. ,11. larcrtosiis (Cope) J. & G. P.ody stout. Head broad and deep. Month wide, the lower jaw pro- jecting. Eye large, .")', in head, equal to miix/Je and to width of inter- orbital space. Maxillary not reaching the line of the orbit. Scales lar-e, only ."• above the lateral line. Silvery: dorsal region dusky: no red. Head J. Teeth 2, 4-4, 2. L. 4.1 inches. Headwaters of Tennes- see K'iver. i< '»i><'.) (IIi/li,,],..,. l,i,;,-i6, 194, mil U. S. Pac. R. R. Surv. x, 261, 262. ) 2?5. M. blcnuius (Grd.) J. & G. Body moderately elongate. Head moderate, the snout short and strongly convex, so that the mouth is nearly horizontal, the upper lip being below the level of the eye, lower jaw shorter than upper, max- illary extending beyond front of eye. Dorsal directly over veutrals, nearer snout than caudal. Scales deeper than long. Lateral line de- curved. Head 4£; depth 4£. D. 8 ; A. 7 ; scales 6-40 '?-3. L. 3£ inches. Arkansas Kiver. (Girard.) (Albuniops Itlennins Grd. Pro.'. Ar;id. Nat. Sci. Phila. 185«i, 194, and U. S. Pac. R. R. +Surv. x, 261. ) tt Teeth without evident grinding surface. a. Teeth with the edges serrate ; scales closely imbricated. 276. ftl. cercostigma (Cope) J. & G. " Teeth 2, 4-4, 2, with sharp, serrate edges (without grinding surface). Dorsal fin inserted 2 scales behind that above insertion of the ventrals. Dorsal line compressed, elevated, rising regularly from end of muzzle. Cranium convex above. Mn/zle narrowed in proportion, slightly over- hanging mouth. Eye 4£ in length of head, l.V in length of muzzle, and 2 in interorbital width. Bud of maxillary opposite posterior margin of nares. Ventral outline less curved than dorsal. Caudal peduncle rather stout. Isthmus narrow. Scales rather elevated, 8-39-3. Lat- eral line gently decurved over ventrals. Head 4£ in length to origin of caudal, 1 scale less than depth at dorsal. The pectorals nearly reacli Mie ventrals, and the latter attain the vent, Eadii : D. 8; A. 8; the % longest (anal) ray four-thirds its base and three-sevenths distance to longest fulcrum at origin of caudal. Total length 4.1 inches. Color bright olive above, without line or spot : below and sides, from fifth row of scales above, golden silvery ; all the fins, except the pectorals, with white pigment at their bases, without markings; a large, round black spot at base of caudal.7' Pearl River, Mississippi. (Cope.) The num- ber of teeth in the inner row as above described renders it necessary for us to refer this fish to the genus Minnilus. Its affinities, however, are evidently with Cliola, and the recorded dentition may be abnormal. (Cyprimlla cercontig ma Cope, Pvoc. Ac.-ul. Nat Sci. Phila. 1867, 157.) aa. Teeth not serrate ; scales lousdy imbricated, scarcely higher than long. b. Dorsal fin inserted directly over tho ventrals ; anal rays 7-9; eye very large ; scales large. (" Episema"* Cope & Jordan.) * Name preoccupied. Bull. Nat, Mus. No. 16 13 194 CONTRIBUTIONS To \<>|;l!i AMKRICAX ICHTHYOLOGY - IV. 277. in. ariomnius (< c ;.— Body stout, moderately elevated, somewhat compressed. Head heavy, broad above, the snout moderate, somewhat decurved. Mouth moderate, oblique, tin- jaws equal, the upper lip on the level of the pu- pil, the maxillary reaching the front of the eye. Bye very large, 2£ in head, much longer than snout, larger than in any other of the Ameri- can Cyprinidcc. Fins model ate, the. dorsal almost directly opposite ventrals. Scales large, la in front of the dorsal. Lateral line much de- curved. Olivaceous; scales above dark-edged; sides and below bright silvery; no red. Head 3i|; depth 4j. D. 8; A. 9; scales G-30-- : teeth 2, 4-4, U. L. 5 inches. Ohio Valley. A handsome species. (L'lwtot/enix ariommus Copo, Cypr. POILU. I860, 378: Cliola ariomma Jordan, Man. Vi-rr. ed. 2, 298.1 278. in. scabriccps (Cope) Jor. Body rather stout, little compressed, the back slightly elevated. Head rather short and broad, the muzzle bluntish, somewhat dee.urved. Mouth rather small, terminal, oblique, the maxillary reaching front of orbit. Lateral line not much decurved. Fins rather small. Eye large, 3 in head. Color plain olivaceous: scales dark-edged above; sides white, with a lateral baud formed of dusky specks, this band running through the eye around the snout. Males tuberculate in spring. Smaller than AT. ariommux and less silvery. Head 4; depth 4£. D. 8; A. 8; scales G-3S-3; 2, 4-4, U. Ohio Valley. (Photogenis soabriceps Cnpe, Proc. Acad. Nat. Sci. Phihi. 1867, 1GG: Cliola Hcabricepa Jordan, Man. V«-.rt. cd. ',', •..".> 8.) 279. i*n*. jejuniis (Forb- A; Gill). Body rather sleiid Head llattish above, the snout blunt and rounded. Mouth rather large, oblique. lOye rather large. .T] in heail, equ -non!, l;-ss lit;. a interorhital sjiaee. Dorsal over ventrals. Sixteen scales be.ioie. di.: -:;i. Color pale, with a broad sihcry lateral ba-id overlyiuu a plumbeous shade.; dorsal sometimes punctulute. ll'-ad i; deptii i;;. I). s; A. 7; scales 6-37-5 ; teeth i', 4-1, l. L. ;> inches. Illinois liiver. '/'. 'inn Forbrs, Hull. Ill Lab '• i liisi. li, tin, 1>7S.) 2NO. ill. Icuciodiis < • Body rather slender. Minded in prolilc. Mouth oblique, mandible no: |.n.j>M i ui^. Lateral line neai-ly straight. Twelve rows of scales in front »i' ll.c doisal iin. Olivaceous; scales above dark edged ; sides silvery, with a purple band ; a black spot at base of 31. CYPKINiD^E MINNILUS. 195 caudal; muzzle and base of dorsal red in the males. Head 4£. D. 8; A. 8; scales 5-39-3. L. 3 inches. Holston River. (Cope.) (Photor/enis leutiodus Cope, Proc. Acad. Nat. Sci. Phila. 18*57, 165.) bb. Dorsal inserted behind ventrals. 281. M. at tips mass (Cope) Jor. Body rather short and deep. Head short, compressed. Eye very large, longer than snout, 2f in head. Veutrals extending to beyond List rays of dorsal, reaching anal. Dorsal elevated, its height equal to half its distance from the snout. White; a lateral silvery band, strongly punctate with black; a black band across eye and snout. Head4i; depth 5. D. 8; A. 9; scales 5-36-2. L. 2J inches. Yadkin Eiver, North Carolina. (Cope.) (Alburnellus altipinnis Cope, Proc. Amer. Phil. Soc. Phila. 1870, 464.) S8-J. OT. amabilis (Grd.) Jor. Body elliptical, rather deep. Head short and rather deep, with large eye, which is considerably longer than snout, 3 in head. Mouth termi- nal, oblique, the premaxillary opposite iniddte of pupil, the maxillary barely reaching the front of eye. Snout moderately pointed. Lateral line decurved. Fins moderate. Dorsal somewhat behind ventrals. Color olivaceous ; sides silvery ; a dusky blotch at base of caudal. Head 3|- ; depth 41. D. 8; A. 9 or 10; scales 5-381-3. L. 2£ inches. Rio Le- ona, a tributary of Rio Nueces, Texas. (Girard.) (Allmrnus amabilis Girard, Proc. Acad. Nat. Sci. Phila. 1856, 193: Alburnellus amabiUs Girard, U. S. Mex. Bound. Siirv. Ichth. 51.) 2§3. M. mcg-aiops (Grd.) Jor. Very similar, but represented as having the head shorter, deeper, and more obtuse, the premaxillary below the level of the pupil, the maxillary extending to beyond the front of eye. Olivaceous; sides silvery; no black caudal spot. Head 44; depth 4^. D. 8; A. 9; scales probably as in the preceding. L. 2} inches. Rivers of Texas. (Girard.) (Alburnus meyalops and socius Girard, Proc. Acad. Nat. Sci. Phila. 1856, 193: Albur- tic] ins mcgalops and socius Girard, U. S. Mex. Bound. Surv. Ichth. 52.) ** Scales small, about 55 in the lateral line. a §4. M. toivitftatus (Cope) J. & G. Body stout, the dorsal region arched. Muzzle narrow, not promi- nent, very obtusely descending. Mouth horizontal, the maxillary reach- ing the front of the orbit. Eye 4 in head, narrower than the flat inter- orbital space. Dorsal inserted slightly behind ventrals; pectorals 196 CONTRimTlMNS To \<,];ni AMF.UICAX IOIITII YOLOCJV - IV. reaching only li;ilf way to vent mis. < !olor silvery; the scales punctate, with blac-kish; a dark band t'roin the shoulders to the base of caudal ; another from the end of the miu/le, across opereiiliini, to base of an;il. lleadlr;; depth 1. D. 8; A. 7; scales !:>-.->:5-ll; teeth U, 4-4, 2. L. 3 inches. Warm Springs, Utah. (Cope.) h liirittiitiix I'opr. Ilavdrn'* pr) -T- -52-(>; teeth 2, 4-4, 1>. L. li inches. Si reams of Utah. (Cope.} This species and the preceding are perhaps young Squall i. (St/bojixix tilnpniioguixix Copp, Proc. Ainer. Phil. Soc. Phila. 1874, l:M: /////«;/)«»x ace. IMIIS large. Dorsal \vell behind venlrals, its longest ray about ;* long as head ; pec- torals not reaching ventrals, the latter to anal. Scales small, much crowded anteriorly. Lateral line stron-ly decnrved. Dorsal scales small; thoracic re-ion mostly naked. Coloration dark bluish above; sides not silvery. .Males in .spring profusely covered with small tuber- cles; the sides and fins clear, bright red; the back, and especially tho top of the head, of a clear glaucous bine. Dorsal tin in both sexes with a largo black spot at the base of its anterior rays, this spot about as •Jordan, Mau. Wri. '''-'• 'vp" .v-w/i/i/;/* ilijitriitinH l>'af. (kvfjfjov, blood; MI, tail.) 31. CYPRINIDJS MINNILUS. 197 large as the eye; dorsal, anal, and ventrals blackish at tip. Head 4£; depth 4. U. 8; A. 12; scales 9-46-4; teeth 2, 4-4, 2. L. 21 inches. Rivers of Southern Wisconsin, etc. (Lytlintrua cyanocephalus Copelaud, Proc. Acad. Nat. Sci. Phila. 1677, 70.) 287. Ul. atripes (Jordan) Hay. Body moderately elongate, very strongly compressed and elevated. Head comparatively pointed. Mouth rather large, quite oblique, the maxillary reaching to the front of eye; lower jaw projecting. Eye small, shorter than muzzle, 4 in head. Scales closely imbricated^ crowded anteriorly. Lateral line strongly decurved. Dorsal fin be- ginning midway between ventrals and anal, high anteriorly; pectorals not quite reaching ventrals; the latter to vent Coloration of body dark bluish, without traces of vertical bars; sides not silvery, the scales dusted with dark puuctulatious; dorsal with the usual black spot at base in front, smaller than in the other species; a black bar crosses its upper part; anal colored like the dorsal, the markings paler; ventral iius dusky. Males profusely tuberculate, and doubtless red in spring. Head 4£; depth 4. D. 7; A. 11; scales 9-52-5; teeth 2, 4-4, 2. L. 3 inches. Southern Illinois. This species, and possibly the preceding also, niiiy be local varieties of M, diplemius. (/.i/tliriiniK utrqjts Jordan, Bull. Ills. Lab. Nat. Hist, ii, 59, 1878.) 288. M. diptremius (Rat.) lluy.—lied-Jin. Body elongate, compressed, little elevated, the caudal peduncle nota- bly long. Head long, conic, rather pointed. Mouth large, moderately oblique, the premaxillary oil the level of the pupil, the maxillary ex tending to opposite the eye, lower jaw somewhat projecting. Eye mod- erate, about equal to muzzle, 31 in head. Scales closely imbricated, crowded anteriorly, the antedorsal scales about 3(^. Dorsal fin high, inserted about midway between ventrals and anal ; pectorals not reach- ing ventrals, the latter to vent; caudal fin long. Coloration dark steel- blue above; pale or silvery below ; the males often showing traces of 8-KH obscure cross-bars; a conspicuous spot at base of dorsal in front ; the liii.- otherwise all plain. Males with the anterior dorsal region and the head proiusely covered with small whitish tubercles, the belly and lower lins being of a bright brick-red in the spring. Females very pale olive, sometimes almost colorless. Head 4^ ; depth 4^-. D. 7 ; A. 11: scales 9-47-3; teeth 2, 4-4, 2. L. 3^ inches. Ohio and Upper Missis- sippi Valley and lake region; generally abundant in small, clear streams. (Semoiilus diplcmiux Eaf. Icbth. Oh. : llypsihyis diplcemia Cope, Proc. Acad. Nat. Sci. Phila. 1807, l(h> ; Jordan, Man. Vert. 'J95. Leutim-un d'qihotduis of Kirtland and of Gun- tlicr is Luxiluts cornuty.s.') 198 CON TIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 289. ITI. ardCMS (Cope) Hay.— ^oiiilieni L'cd-Jin. Body elongate, little compressed ;uul not at sill elevated. Head long, conic, and pointed. Month large, oblique, the lower jaw scarcely longer, the maxillary reaching to opposite the rye. Eye rather laru •< -, .">.', in head. Scales moderate, silvery, not closely imbricated. Lateral line deeurved. Dorsal tin as in the other species; pectorals falling considerably short of ventrals. Coloration olivaceous; the scales dark-edited above ; the sides with a brilliant silvery band; dorsal with a rather small black spot at liasc in trout. Males in spring tubercnlate, the entire body and fins brilliant red; crimson in spring, becoming more M-ailet later. Young males variously purplish or pinkish. Head 41; depth Ut. Scales 0-5()-:> ; teeth 2, 4-4, 12. L. L'£- inches. Cumberland, Upper Ten- -ce, and Uoanoke Tiivers. A beautiful inhabitant of the deal- mountain streams. (/7f/;;s<7f//i's ardena Cope, Proc. Ao:ul. Xat. Sci. Phila. 18ii7, 103: Leuciscus ardent (Jiinthcr, vii, x5:>7.) 290. .11. puuctulatus Hay. Body short, deep, compressed. Back elevated in front of dorsal. Head short and deep. Prolile straight or slightly concave. Mouth large, quite oblique, maxillary reaching anterior rim of orbit. Eye mod- erate, .;.', in head. Scales small, I.'.") in front of dorsal. Lateral line much decurved. Dorsal beginning midway between muzzle and base. of caudal. Caudal peduncle compressed. Straw-color; silvery on sides and below; scales above, dark-edged; a dark dorsal line; a dark band on caudal peduncle; a small black spot at base of dorsal. Head Ir. ; depth -I.',. 1). S; A. 10 or 11 ; scales 11-10-:!: teeth U, 4-1, L', with grind ing surface. I/. 12 inches. Tuscumbia River, Mississippi. (Hay.) T. S. \.-ii. Miis. l-:~n. .",08.) ': A l>!:i'-i. .-|n»t. mi I In- npprr jinlrrinr p.-irt rly imbricated as in .17. hrlliin. Lateral line much decurved. l)oi>,d far back, midway between pupil and l>a.>e of caudal and consid- ei-al»l\ posterior to ventrals; pectorals not reaching vent nils, t he latter to veil . 1 >ai iv ; scales above all with black points ; a plumbeous lateral liaml, ending in . u- caudal >poi ; i nairou dorsal l>and ; a. black spot on the upper anterior portion of the dorsal and also on the anal, 31. CYPRINID^ - MINNILUS. 199 •each surrounded by a diffuse blotch ; tip of ventrals and edge of pec- torals dark ; vertical fins red. Head 4£ ; depth 4. D. 8 ; A. 11 ; scales 8-45-3. L. 21 inches. Chickasawha River, Mississippi. (Hay, Proc. U. S. Nat. Mus. 1880, 509.) ttt No distinct black spot on the dorsal. a. Body short and deep. 292. ML. belBus Hay. Body short, deep, considerably compressed. Dorsal region elevated. Head short. Muzzle short, rather pointed, the profile somewhat con- •cave. Mouth large, oblique, the maxillary extending to opposite the front of orbit, the lower jaw projecting. Lateral line much decurved. Scales crowded forwards, 25 in front of dorsal. Dorsal midway between snout and caudal, behind ventrals ; pectorals not reaching ventrals, the latter to vent. Caudal peduncle slender. Dusky above, with a nar- row dark dorsal line; sides silvery, with plumbeous streak; no spot at base of dorsal; fins mostly black- tipped ; belly flame-color in life; lins orange at base. Head 41; depth of. D. 8; A. 10 or 11; scales 7-41-3; teeth 2, 4-4, 2, " sharp-edged, but with a masticatory surface". L. 2± inches. Tombigbee River, Mississippi. (Hay.) (Hay, Proc. U. S. Nat. Mus. 1880, 510.) aa. Body slender and elongate. 1293. OT. BBuatliliams (Cope) Jor. Body slender. Orbit large, 31 in head, scarcely larger than length of muzzle, equal to interorbital width. Olivaceous above; the scales brown-shaded ; a plumbeous lateral band ; sides and below bright sil- very ; a dark spot at base of caudal. Males with the muzzle and chin red. Head 41; depth 6. D. 8; A. 11; scales 7-44-3; teeth without grinding surface. L. 21 inches. Neuse River. (Cope.) ( Alburnellus matulimis Cope, Proc. Amer. Phil. Soc. Phila. 1870, 465.) M. aSnas Jordan. Body slim, compressed. Head small, short, moderately deep, flattish. above. Mouth rather large, very oblique, the lower jaw slightly pro- jecting. Eye very large, longer than snout, 3 in head, the maxillary about reaching its front. Scales small, loosely imbricated, their outlines extremely indistinct. Fins moderate. Coloration very pale translucent green ; scales of back finely punctate ; sides with a very distinct me- tallic blue band formed of dark puuctuiations, this band passing through the eye and snout and forming a most characteristic color- marking; a streak of black dots along the bases of dorsal and anal, I20'» C'OXTKIUrnoNS TO \<»J-15-4; teeth 2, 4-4, 2, with \ narrow or obsolete grinding surface. L. I'.1, inches. Tennessee and Ala- bama Ifi\. (.\\itvtrujti* I. l;in, Aim. Lye. Nat. Hist. J\. V. Scales comparatively large, not higli i titan long, imd not closely imbricated ; l.-s in from ni' dorsal l.-ir^i-: tocth ivitliout grinding surface. (Minniluv.*) b. Anal (in long. ; 14. H. oligaspis (Copo) Jor. '• Under jaw projecting a little beyond upper, maxillary extending to opposite posterior nostril. Head conic in profile, with muzzle com- pressed, one-tifrh of length to notch of caudal. Eye 1>1 in length of Lead. Operculum higher thao long. Pins short (except anal); ventrals anterior to dorsal. I). 1,8; A. I, 14. Scales rather large, 5-41-2; lat- eral line with a Ion-, -entie anterior deflection. Above reddish ; side^ of head and broad lateral baud silvery; body medially yellowish.'-" (< ope.) L. 2 inches Kansas. LYrhaps a member of some other genus. (Alburuu* . Proc. Ai-:td \:tt. Sri. Phil;; Abramiaf oliga Giintlicr. vii. :' b'-. Ana! I'm inodc.r.-iic, UN rays 10 or 11. >ovr lateral line in atioii! '' sen i. i A short, deep species, like it. N(>U'.niiti<-(is .Jordan iV Cill.. sj.. nov. iiod\ short and deep, compressed and somewhat elevated. Head ralhei lai-.-. dee)), blumish, resembling the head of Minuiluti cornutus. Moiiih moderate, terminal, oblique, lower jaw slightly included, up])ei lip opposite middle of ( ye, tin- maxdlarv extending to front of orbit. \ery !ar-<'. lon-er than snoui. .': in head; interorbital space broad, Scale.- large. Lateral line much decnrved. Fins moderatoj Qirard Proi Acad. N»l 8oi. Phila. 185C, 193. 31. CYPRINILML M1NN1LUS. 201 the dorsal well behind ventrals, the tips of the ventrals extending to the last dorsal ray. Caudal peduncle moderate. Coloration very pale j sides with a bright silvery baud ; scales with very little dark edgiug ; a dark line at base of dorsal; males iu spring with the snout profusely tuberculate. Head 3i| ; depth 4. D. 8 ; A. 10 ; scales G-38-3 ; teeth 2, 4-4, 1. L. 3 inches. Saluda River, South Carolina. (Notropls photogenis ("pale variety") Jordaii & Brayton, Bull. U. S. Nat. Mus. xii, M, 1878.) » 298. Id. pliotogeuis (Cope) Jor. Body inore slender, compressed. Head moderate. Mouth quite ob- lique, lower jaw scarcely projecting ; maxillary about reaching orbit. Back broad. Dorsal fin inserted behind middle of body, a little behind veutrals. Lateral line deeur ved. Eye large, 3£ in head. Color oliva- ceous, with brown vertebral and dorsal lines ; sides and below bright silvery; cheeks silvery. Head 4|; depth 5£. D. 8; A. 10; scales 6-40-3. L. 3 inches. Alleghany region, Pennsylvania, to North Carolina, on both sides of the mountains ; abundant and variable. Var. engraulinus Cope is slenderer, the depth 6 in length, the head 3f . (StjitaUax photoi/i'iii* Cope, Proc. Acacl. Nat. Sci. Phila. 1854,280: Photogenis leucops Cope, Proc. Acacl. Nat. Sci Phila. 1867, 1(54 : Leuciscus photogenis Giinther, vii, 252.) 299. 31. telescopus (Cope) Jor. & Gilb. Very near the preceding, but with the dorsal fin inserted about mid- way between snout and base of caudal, not much behind ventrals. Eye longer than muzzle, 2f in head. Mouth very oblique, mandible not pro- jecting. Color pale greenish ; the scales extensively dark-edged above. Head 4J ; depth 5. D. 8; A. 10; scales 5-38-3. L. 3£ inches. Ten- nessee River. (Photogenis telescopus Cope, Proc. Acad. Nat. Sci. Phila. 1867, 16*> : Leuciscus telescopus Giiuther, vii, 252.) 300. M. stilbius Jordan. Body rather slender. Head rather long, somewhat pointed. Mouth large, oblique, the maxillary reaching to the eye. Eye very large, greater than snout and than iuterorbital width, 3 in head. Fins rather high ; the ventrals reaching to opposite the last rays of the dorsal. Color pale silvery green ; sides with a- broad silvery baud, on which are many dark punctulatious ; these are numerous just behind the shoulder-girdle and at the base of the caudal, where they form an evident spot; cheeks pure silvery; lips dusky. Head 41 ; depth 5. D. 8; A. 10; scales 6-37-2 ; teeth 2, 4-4, 1. L. 3 inches. Alabama River. stilbiux Jordan, Aim. Lye. Nat. Hi^r. N. Y. 1^76, '34'.'-.) ."I,1 1 BUTTONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 301. ITI. pcrcobromus Cop. Ilody moderately don-arc. Head rather long, themu/czle aeuminaie. Mouth oblique, the jaws equal, the maxillary extending behind front of orbit. Kye moderaie. :\^ in length, as long as .-noiit. Dorsal beginning. slightly behind ventrals. Seventeen scales in front of dorsal. Color pale, with lateral silvery band ; dorsal scales and scales at base of c dal with dark punctolations. Head :;:J ; depth -1.]. D.8; A. 11 ; scales ;_;;;_:;; teeth L'. 1-1, L'. L. 2 inches. Saint Joseph, Mo. (Cope.) iromua C»\n\ Iluyil-n'.s Cool. Snrv. Wyom. 1870, 440.) 302. .11. rubellus (A-;.) Jor.— Rosy Minium'. Uudy Inn-1 and slender, compressed, the back not elevated. Head. blunt, conic, proportionately shorter than in the other species. Mouih moderate, very oblique., upper lip on the level of the upper part of the pupil, maxillary about reaching to the front of the eye. Eye large, rather longer than snout, .'Jj in head. Fins low; the dorsal well behi •!<:•, Kal'. Aincr. Month. M:t£. A- (!rit. Rev. 1818, 204 (vory doubt- ful, perhaps ;i \i>/i mii/miHH): Alburnua rubellua Agaaaiz, L:ikn Superior, IH.'.O, :5 >-! : Al- liurnn^ nitidii* K'iri land, ( 'Icvflaml Ann. Sri. 1-."»1, II: AUmrntUus jacitlus and arye ''"\»\ ('>]'i'- I'mn. I.^Uii, :{-r>.) 303. ,11. (lioK-eims \li\\'. — Lnn ruld Minium'. Very similar to the preceding, but smaller and more compressed, with -hoiter snout, smaller eye, narrower and more convex interorbital space, which is not wider than eye, and shorter ventrals, which scarcely reach the middle of the dorsal. Colors very pale; lips dusky. Head depth r,.\ (to IA). 1). S; A. 10; BCaleS 6-38-3 J teeth I', 1-1, L'. L. :fi ties. Ohio Valley. Described from specimens taken at the Falls of Ohio. 'n.i iliin inn. s l.'al'. l.'lilh. oli. t." ; \llni,-:iii!i ililu'liix (Inl. I'lor. Arail. N'.. 1'liila. I-.M',. |'i;',: . I //,»,•////-.»/;ix 'HI. •in. I dun, mi* .lonl.-iii. Man. Vei • >7.) :JOI. ,11. fiibrirroiis Fordan.— J .-d Botuse. Mouth horizontal, end of maxillan not quite reachm- orbit, Lye 4 in head. Lateral line not developed as far as ihe ventral fins. Grayish; a broad dark lateral band, spotted with darker; back ami top of head dark. Head 4.',: depth:.. D. 8; A. 7; scales 9-EJ6-6; teeth i'. l-l, 1. L. 2 inches. l-'ort Hall, Idaho. (Cope-) ((.'.- >ol. Snrv. Mont. 1871 87.-ERICIMIBA Cop.-. (Copr. l'i,.. . Arad. Nat. Sr,. I'hila. i I vpt; Kncijniba hitfi-,il,i • Uody rather elongate, little compressed. Muzzle broad. Interoper- cle, suborbital. and dentary boiics crossed by eonspieuous, externally visible, imieous channels. Lips thin. No barbel. Teeth 1, 4—4, Or without ^rindin^ surface, hooked, the ed-vs entire. Scales rather lar Lateral line continuous. Dorsal lin above ventrals. Anal basis short. Silvery li>he> <»!' rather small size, known at once, from all other min- nows by Ihe cavernous bones of the lower part of head. (tj//c', an inten- HIVC particle; wnfy, a cavity: in allusion to the development of I he mu- cous channels.) !JOS. E. t>iicrat:i < '<>i» I'.ody fusiform, rather elon-ate, little compressed, the back not ele valed. Head rather lon.u, somewhat depressed above, with broad and prominent muz/.le. .Month rather small, horizontal, subinferior, the lower jaw considerably shorter than upper, upper lip below level of pupil, maxillary not reaching to eye. deniai-s1 bones dilated, the ma cons channels conspicuous. Suborbital very bnia.l, silvery, with an ele\:iu-d loii-itudinal riil-i- and conspicuous cross-lines ; opei'cle small. . I in head. Fin- saiall, dorsal over ventrals. Scales mod crate. Lateral line nearly straight, lin-asi sc»leless: L5 IflXge scales before d.ti ,.il. Color obvaceous, i-ather pale: sides bright silvery, with bluish rellcctioiis; a dark dorsal si real;, conspicuous posteriorly; fins plain; males withonl tubi-rcles or bright colors. Head .'I;1; depth 1). ,s; A.. 8; BCali \] leeih 1. t-J.O. L. ."> inches. Ohio Valle\ to Mississippi ( llnii,: locallv ver\ abundant. < )ne of our most icmark alile species of ( 't//>ft it i.ln id ( !j pr. Penn. .: •! : Qllnther, \ ii, 183.) 31. CYPRINID^K — PHKNACOBIUS. 205 88.— PHENACOBIUS Cope. (Cope, Proc. Ac.:nl. Nat . Sr.i. Phila. H >7, '.».'> : typo rii'mni-nlnnx teretulm Cope. ) Body elongate, little compressed. Mouth inferior, the lower lip thin inesially, but enlarged into a fleshy lobe on each side toward the angle of the mouth, thus presenting a superficial resemblance to that of Exo- glossum, with which the genius has probably real affinities; upper lip with a callous covering within; dentary bones distinct, except at sym- physis. No barbel. Upper jaw protractile. Teeth 4-4, hooked, with- out grinding surface. Scales rather small. Lateral line complete. Dorsal fin in front of ventrals ; anal basis short. Isthmus extremely wide. Intestines short; peritoneum white. Small species, with the aspect of young suckers, (^vaf, deceptive; ,*:'".) 3 tO. P. mirabilis (Grd.) Jordan. Body moderately slender. Head short, rather blunt anteriorly. Mouth small, the maxillary not reaching to the eye. Eye large, 4 in head. Olivaceous; a silvery lateral band and a dusky spot at base of caudal. Head 4; depth 4|. D. 8; A. 7; scales 6-51-5 (teeth 1, 4-4, 1?). L. 3 J inches. Arkansas River. (Oirard.) (Exoglossum niirabile Grd. Proc. Acad. Nat. Sci. Phila. 1856, 191, and U. S. Pac. R. R. Surv. x, 256: Exoglossum wirabile Giiuther, vii, 188: ? Sarcidium scopifermri* Cope, * Body moderately elongate, the back not elevated. Caudal peduncle stout. Head rather short and thick, with prominent but obtuse muzzle. Mouth small, horizontal, wholly inferior, the maxillary not reaching the eye. Top of head flat. Lateral line nearly straight. Eye large, 4£ in head. Yellowish, with a silvery lateral band, which terminates in a black caudal spot. ; no do. sal tin. Head 4^ ; depth 43. D. 8; A. 7; scales 6-44-5 ; teeth 4-4. L. 3 inches. (Cope.) Missouri River. 206 CONTKIWnioX- TO NOKTII AMERICAN ICHTHYOLOGY - IV. Son Wy«ra 1870 WO : 72 ; Jordan, BnlL Haydea'e GeoL Snrv. Ten. iv, ^s hci <-hi. < n I'loiu the Kio Gnimli', v.ith scales G-4f>-7, (!K- !,. . • •: ? J'ln-miiol'iHS terctuliia var. liosternus Hull. 111.-. MU-. N;ii. Hist, i .iU-s siniill. ulx'iit t;n iu (In- l:it( nil i1 31 I. P. OSItOStOmilS Jordan. liody rather slender, nearly tc.. .m<-h compressed at all, back not devilled, raudal pediinele stout. Head very large, tlie muzzle blunt and liea\y. the.[ in its length. Scales small, thin, and loosely imbricated; the back and belly sealed; chot naked. Lateral line nearly straight. Twenty-two scales in front of dorsal. Fins all small. Width of isthmus 2.V in head. Pale oliva- eeous; white below ; a silvery lateral Ijand, underlaid by dusky, which lorms a \ a^ue blotch at base of caudal; back dusted with dark specks; top of head black; a yellowish v >rtebral line. Head 4^-; depth 5§. D. ^; A. 7; scales 7-60-5; teeth 4-4. L. -t inches. Alabama River. (Jonl;iii. Ann. L.v. Nat. Hist. N V. 1 -TV,, ;;:W.) ;tz ». P. uranops Copo. liody very slender, little coinpre^scd, l>ack not elevated, caudal pe- duncle long and slender. id i'>n- and rather slender, flat above, the. muzzle broad, blunt, and projeci in.^. .Mouth entirely inferior, larger than in I he, other species, with conspicuous lips. Eye large, placed very high, behind the middle of the head, 3J in head. Scales small, 24 in front, of dorsal. Lateral lino sliai.uht. Chest and middle line of belly nalved. Width of isthmus h.-ir length of head. Fins small. Uead 4;J ; :»th (i. 1). 8; A. 7; > '•()-(»; teeth 4-4. Tennessee River. ,H . i-r;. •.)(!.) 80.— RIII^ICDITBIVS A-o-ssi/,. Honed Hc.-kcl. prroi-cnjiifd in ;:- ; I .Su|..-nc>i, i typo Ci/prinus atronavus Mitchill.) I5ody rather d:. not much compressed, ^louth small, subia- ferinr, normal, the upper jaw »/)( proiraetile, the upper lip continuous with the skin of the ton head, a l>ail>el terminal on the maxillary. mostly ^, -1-K L\ hook:-.!, \\ithout grinding surface. Intestinal 31. CYPKINIDJ3 RHINICHTHYS. 207 canal short. Scales very small. Lateral line continuous. Dorsal liii inserted behind the ventrals. Anal basis short. Size small. Colora- tion dark, rosy in spring. (f>v^ snout; ?*0w?, fish; the snout in most species being prominent.) 313. R. c;it:tr£tctae (Val.) Jor. — Long-nosed Dace. Body elongate, little compressed, not elevated. Head long, the muz- zle flattened, narrowed, and extremely prominent, the mouth being en- tirely inferior and horizontal. Eye nearly median, its diameter con- tained twice in the length of the snout, about 5 times in head. Isthmus wide. Barbel evident. Lateral line commencing opposite the upper posterior angle of the opercle, decurved. Pectoral fins enlarged in the males. Color olivaceous, paler below, with numerous dusky punctula- tions ; the back often almost black ; some of the scales usually irregu- larly darker, producing a mottled appearance; no black lateral bauds ^ young specimens with a dusky lateral shade; a blackish spot on the opercle; males in spring with the lips, cheeks, and lower fins crimson. Head 4; depth 5. D. 8; A. 7; scales 14-65-8; teeth 2, 4-4, 2. L. 5 inches. New England to Virginia and Wisconsin ; frequenting clear and boisterous streams and rock-pools. (Gobio cataractce Cuv. & Val. xvi, 315, 1842: Leuciscus nasutus Ayres, Bost. Journ. Nat. Hist, iv, 299,1843: Argyreus nasutus Cope, Cypr. Perm. 369: Rhinichthys nasutus Gimther, vii, 189: Ceratichthys cataractce Giinther, vii, 176: Rhinichthys marmoralus Agassiz, Lake Superior, 354: Rhinichthys marmoratua Giinther, vii, 189.) * 314. K. nmxillosus Cope. Body elongate, not elevated. Head long, the muzzle long and project- ing, as in the preceding species, but rather heavier, the mouth broader^ the maxillary extending nearly to the eye. Barbel evident. Eye small, high up, median, 5| in head. Fins small, caudal not deeply forked. Lateral line decurved. Silvery; darker above; a dusky lateral shade, at least in the young. Head 4; depth 5. D. 8; A. 7; scales 11-70-8. L. 5 inches. Upper Missouri region southeastward. Very close to the preceding. (Cope, Proc. Acad. Nat. Sci. Phila. 1864, 278.) 315. R. traiBSmontanus Cope. This species, the common RMnichthys of New Mexico, differs from Rliinichtliys maxillosus in having the dorsal fin equidistant between the base of the caudal and the end of the muzzle, and in having the longi- tudinal series of scales below the lateral line more numerous (12-13). -TRmr - TO \<>KTII AMr.KK'AX ICHTHYOLOGY - IV. iinl equal to those above it. I>. S; A. 7; scales 13-70-13. Tributaries of the Kio Crande in Colorado ami Xew Mexico. (Cope.) '.iHi.-htliit* HKirilt.x.'ii <•"]>.• A- YaiT..\v, /or,!. Whr.-lrr's Expl. W. lOOfh M.T. v, r>14, : ini.t ..f Cope, 1-iil); Cope, Amrr. N.-u. .Inly. 1>7'.», 441.) 3I<*. R. Obllisiis Ana>si/. — I!r<)W»-ni>-(il I>>: Very similar to R. atronunu>i, but usually rather stouter, the barbel more distinct, the head a little shorter, ami the coloration somewhat di Herein. Hack olivaceous, mottled with darker; sides with a rather taint brownish band, margined above and below with paler; belly sil- very; a dusky blotch in the middle of the luse of the dorsal fin; males with the pectoral tins enlarg d, and \vith the lateral band rosy. Dead 4; depth 4£. D. 7; A. 0; scales 4-G3-8; teeth 2, 4-4, 2. L. 3 indies. Wisconsin to Georgia; abundant in clear brooks. Probably a variety of the next species. (Aga>six,, AMUT. .lourn. Sci. Arts, 1854, 357; Giinlhcr, vii, 190; Jordan, Ami. Lye. V:it. Hist. N. Y. 1876, :::;!: mihiwhthu* liinatus Cope, Proc. Acad. Nat. Sci. Phila. 1864, ftltini* ]i/lt>/» meleagris Aga&siz, AIIHT. Journ. 8ci. Arts, lb.")4, 15.">7 : lUtinichthysmeleagria \i !-nn. Hull. Ills. Mus. Xat. Hist, i, 4(">: Uliitticlttlti/x mclcar/rin Giinther, vii, 190.) 317. R. atroiiasiis (Mitch.) Ag. — Illaclc-noaed Dace. r»<»dy moderately elongate, little compressed. Head moderate, rather broad and llattish above. Snout motlerate. Mouth small, horizontal, snbterniinal, the lower jaw included, barbel minute but probably always present, upper lip on the level of the lower part of the pupil, max- illary not reach in <;• nearly to the eye. Eye small, nearly median, l.l in snout, -\.\ in head. Fins rather small; dorsal tin well back. Scales quite small, somewhat imbedded. Lateral line somewhat decurved. Color blackish above; some of the scales irregularly darker ; a black band passing jVoin snout through eye and along the sides of the body; a pale streak below this; belly silvery ; males in spring with the lateral band and the lower fins, and sometimes the whole body, bright crimson ; males in late summer with ihe lateral band scarlet or orange, the red COloi growing fainter later in the season. Head t; depth 4i. D. 7 ; A. 7 ; Lat. I. (11 ; leeth L'. 1-1, i>. L. :! inches. New England to Ohio and Virginia ; very abundant in clear brooks and mountain streams. (''.'//• •,•,•1111.111.1 Mitrli. Trans. Lit. &, J'liil. 8oo. i. !''>": Ciinfhcr, vii, 191.) «0.-A€JOSIA (iininl. 'Ginml. I'rnc. Arad. Nat. s. i. 1'iuia. L856, i -v, : i\pc dgotta chrysogtuter GrCL.) Body moderately elongate. Mouth moderate, normal, the premax- Ulariea protractile, the maxillaries with a terminal barbel. Teeth 4-4, 31. CYPRINID.E — APOCOPE. 209 {looked, with grinding- surface. Scales quite small. Lateral line con- tinuous. Dorsal over or slightly behind ventrals. Anal basis short. Size, aspect, and coloration of RhinicMhys and Apocope. (A coined name, without meaning.) 318. A. cBirysogaster Girard. Body rather stout, the back slightly elevated. Head heavy, the snout bluntly conical, covered with tubercles in males in spring. Mouth small, nearly horizontal, the lower jaw included, premaxillary entirely below the level of the eye, the maxillary not reaching its anterior mar- gin, barbel minute. Eye rather large, about 4 in bead. Fins well developed. Lateral line somewhat decurved. Color olivaceous above, with black spots ; yellow below ; a black streak along the sides. Head 4-V ; depth 4f . D. 9 ; A. 8. ; Lat. 1. 90. L. 3.J inches. Rio Gila, Ari- zona. ( Girard.} '(Girardj Proc. Acacl. Nat. Sci. Phila. 1850, 187, and U. S. Mex. Bound. Surv. Ichth. 48.) 319. A. metallica Grd. Stouter, the head shorter, and the snout more convex. Dorsal rather higher and narrower. Scales (in figure) considerably larger. Colora- tion and proportions essentially as in the preceding. Lat. 1. 75. Eio Gila. (Girard, Proc. Acad. Nat. Sci. Phila. 1856, 187, and U. S. Mex. Bound. Surv. Ichth. 40.) 91.— APOCOPE Cope. (Cope, Hayden's Geol. Surv. Mont. 1871, 472: type Apocope carringtoni Cope.) Body somewhat elongate. Mouth normal, rather small, with thickish lips and a terminal maxillary barbel, premaxillaries protractile. Teeth mostly 1, 4-4, 1, hooked, without grinding surface. Scales very small. Lateral line weak, often more or less broken posteriorly. Dorsal fin inserted behind the ventrals. Anal basis short. Isthmus broad. Size small. Colors dusky, with red in spring. The species are closely re- lated and difficult to separate, and the genus is scarcely distinct from Agosia. (dnnxnxTj, a deficiency, in allusion to the incompleteness of the lateral line.) * Lateral line with 60-70 scales. 32O. A. carriMgtoni Cope. Body rather stout. Head blunt and heavy, the snout scarcely over- hanging the mouth; maxillary not quite reaching the line of the orbit; barbels minute; isthmus wide. Eye 4£ in head, 1£ in interorbital Bull. Nat. Mus. No. 16 14 210 CONTUIKCTIOKS TO NORTH AMERICAN ICHTHYOLOGY IV. width. Dorsal tin slightly behind ventrals, nearer caudal than muzzle. Lateral Hue in the young running about hall' way to caudal, nearly com- plete, 01 wanting on some scales only in tlie adult. Olivaceous; a dark lateral hand : dark shades along the back ; males with the loral region and the bases of all the lins except the dorsal scarlet. Head4|; depth 5. 1). 8; A. 7; scales lii-fiO-11; teeth 1,4-4, 1. L. 4 inches. Utah to California ; very abundant in rock-pools. (Cope, Ihiyilt H'S (ieol. Surv. V i 1, !7J : Jordau & Henshaw, Kept. Chief Eng. U. S. Oo-. Siirv. W. KKitii Mer. 1*7?, 191.) 321. A. nubila (Grd.) Jor. & Gilb. This species is very similar to A. carringtoni, but in Girard's original types the head is quite slender, while in the latter species it is blunt and stout. Lateral line continuous, but broken and feeble posteriorly. Body stout. Mouth small, barbels small. Fins rather small. * Color blackish, with a darker lateral shade. Head black above. Head 4£ ; depth 4'-. D. 8; A. 7; Lat. 1. 00. L. 4 inches. Washington Territory. (Anjijrcun ttitbiliiH Giranl, Proc. Acacl. Nat. Sci. Phila. l*M, 18(j : An/yreNx nubilui* Girard, U. S. 1'ae. U. K. Kurv. x. '244.) 322. A. vuliierata C<>i>< . Uody elongate. Muzzle obtuse, not projecting. Mouth inferior, hor- izontal, maxillary not reaching line of orbit. Eye as long as muzzle, 4 iu head. Dorsal tin behind line of ventrals, nearer caudal than snout. Barbels small. Olivaceous; yellow below; a blackish lateral band; head blackish above; males with the chin rul. Head 4^; depth 5£. D. 8 ; A. 7 ; scales 12-G5-12 ; teeth 1, 4-4, 1. L. 2£ inches. Utah to Cal- ifornia, Oregou, and Arizona.; generally abundant in the mountain re- gion. (Cope, Jlayden'H Geol. Surv. Mout. 1871, 473; Cope, vol. v, Zool. U. S. Geog. Surv. \V. lOOih M.T. l-.;(;, tilo; .Ionian & Ilcusba\v. l>'c|.t. Chief Eug. U. 8. ti.-ng. Surv. W. •,191: Ttyoma rkinichUii/ ipe, llayden's (Ji-nl. Surv. Mont. 1871, Vari..\v. vol. v, /.nil. U. S. ~urv. W. lOuih M.T. ISTii, 648.) 32::. A. licnshuvii ((»]>r. Uody rather elongate. Mn/./ic i-ather long, broad, obtuse, but over- har ' ne mouth. Uarbelsina.il. K\ t-s small, high up, shorter than at Vend'al (ins reaching anal, but not reached by the pectorals; al lins originating somewhat behind base of ventrals. <\>|or pale, with a lew »|ark clouds on the sides ;uid dark shades on head; lower i at lia.se; young with dark cross .streaks. Head 1 J ; depth 4^. J>. '•>; A. - L4-62-10J i.-cili l.-l-l, 1. Utah and Idalio; abim- da! PlOVO lii\ei. NOi very dillerent Irom the preceding. (liltiniciithyn lc • Cope, l'i» ... AIIIIT. I'hil. 8oo. 1'ljila. 1874, I'M; ('»[«•, vol. V, Zool. U. Surv. \V. HMKh J\h-i. f.JG.) 31. CYPJUNIDJE CERATICHTHYS. 211 824. A. oscula (Grd.) Cope. Differs from A. liensliavli in having a longer and more attenuated body, and narrow, sharp-pointed muzzle. Base of dorsal intermediate between base of caudal and end of snout; ventrals reaching anal, but not reached by pectorals. Yellowish white above ; bright yellow below j a broad blackish lateral baud ; a narrow black stripe around muzzle j males with the lower jaw and lower fins crimson in life. Head 4£ (" in total length"); depth 7£; eye 41 in head. D. 8; A. 7 ; scales 10-63-10. Colorado to Arizona. (Cope.} (Argyreus osculus and notabilis Grd. Froc. Acad. Nat. Sci. Phila. 1856, 188, and in U. S. Mex. Bound. Surv. Ichth. 47 ; Cope, vol. v, Zool. U. S. Geog. Surv. W. 100th Mer. (347.) ** Lateral line with 80-90 scales. 325. A. ventricosji Cope. Body rather elongate. Muzzle obtuse, but narrowed anteriorly, not overhanging the mouth. Eye 4 in head, shorter than snout. Caudal peduncle stout. Barbels small, sometimes obsolete. Scales very small. Dusky olive above ; a blackish lateral band. Males with the axils of the pectorals and ventrals scarlet j a scarlet spot above the gill-openings and one on the sifle of the muzzle. Head 4; depth 4f. D. 8; A. 7j scales 18-89-15 ; teeth 1, 4-4, 1. L. 2f- inches. New Mexico to Arizona and Oregon ; abundant. (Ceratiohthys ventricosus Cope, Proc. Auaer. Phil. Soc. Phila. 1876, 136; Cope, vol. v, Zool. U. S. Geog. Surv. W. 100th Mer. 648 ; Jordan & Henshaw, Eept. Chief Eng. U. S. Geog. Surv. W. 100th Mer. 1878, 192.) 92.— CERAT5CHTHVS Baird. Horny Heads. (Nocomis Grd ; fHylopsis Ag.) (Baird, 1853, brief notice; Girard, Proc. Acad. Nat. Sci. Phila. 1856, 212: type Semotl~ lus bigultatus Kirtland.) Form various. Mouth terminal or inferior, with lips thin or some- what fleshy, a conspicuous barbel terminal on the maxillary, premax- illaries projectile. Teeth 4-4, or 1, 4-4, 1 or 0, hooked, without evident grinding surface. Scales rather large. Lateral line continuous. Dorsal fin inserted over, in front of, or slightly behind ventrals ; anal basis short. A large and varied 'group, (x^a?, horn ; f£0y. ;m uvnerally large and sil- , b. in i!i i \\o-ro\ved ................ cinniiKji, /MI.WM, amblops, rubrifrons, hypxiitotus. bit. i ie-n»\ved ............... . ......... ilh^iniUix. xterted slightly behind the ventrals, usually with a lilaek hloti'h mi its last rays; scales rather lar-^e, >ilvcry. Inlirosutt, zanemus, moitm-lnix. , of lai_ vith the mouth anterior, the lower j;iw iucluded; the dorsal I'm slightly Behind the ventrals. (Ceraiichthys.) rhii;: -.'7--: i 'I'ntticliflni-i < i/<-l»ii; (iiint her, vii, 17.-i : Ccrntich- : :ih-r, \ ii, 179.) 327. <'. mirroi»o^oii t ..pr. Body modeiaiel\ stout. Head mneh as in Minn/Ins <:<»'>inlu(t, broad, the inu// If obtuse, the pi'olile rounded, des(;ending. Month slightly oblique, its ;,nj,le opposite front of the orbit. Eye •'!] in head. Barbel •iiuute. Caudal peduncle -li-nder. Yellowish brown, with brown ver- 31. CYPRINID^E CERAT1CHTHYS. 213 tebral baud : a brown lateral shade. Head 3f ; depth 4|. D. 8; A. 7; scales G-40-3 ; teeth 4-4. L. 31 inches. One specimen known, from Couestoga River, Pennsylvania. Perhaps a variation of the preceding. (Cope.) (Cope, Proc. Acad. Nat. Sci. Phila. 1864, 277; Giinther, vii, 179.) 32§. C. syiaimcfriciis (Baird & Girard) J. & G. Body elongate, slender, moderately compressed, not elevated. Head short, rather slender and pointed. Mouth small, little oblique, the lower jaw included. Eye large, anterior, longer than snout, 3 in head. Bar- bel small, but evident. Scales small, rather loosely imbricated. Lat- eral line strongly decurved.. Dorsal slightly behind ventrals. Coloration pale ; scales dotted with black ; cheeks silvery. Head 4§ ; depth 6. D. 8 ; A. 8 ; scales 9-58-4 ; teeth 4-4, without grinding surface. L. 6 inches. Rivers of California. (Pogonichtliyx symmetricus B. & G. Proc. Acad. Nat. Sci. Phila. 1854, 136 : Leucosomus symntetricus Giinther, vii, 267.) ** Species of small size, with the mouth subinferior and horizontal; the dorsal fin in- serted slightly ^n front of the ventrals, and the scales generally large and •silvery. (Hybopsis Agassis!.*) 6. Teeth two-rowed. 329. C. cumiiigi Giinther. Barbels minute. Eye entirely in the anterior half of the length of the head, and nearly as long as the snout, which is obtuse, rounded, convex, the mouth being subinferior. Tnterorbital space convex, as wide as the orbit. Suborbital ring extremely narrow. Origin of dorsal fin a little behind ventrals, somewhat nearer root of caudal than end of snout. Pectorals not reaching ventrals. A grayish silvery band from gill- opening to the root of caudal, where it terminates in a black spot. Head 41 : body 5. D. 8 ; A. 8 ; scales G-45-6 5 teeth one-rowed '? L. 3^ inches. (Giinther.) "California"? (Giinlher, vii. 177.) 330. C. Iliccns Jordan. Body elongate, compressed, the back somewhat elevated from the oc- ciput to the base of dorsal, thence rapidly declined to the long and slender caudal peduncle. Head short, compressed, the cheeks nearly vertical. Interorbital space rather broad and flat, somewhat grooved. Eye very large, circular, high up, placed nearly midway of the length of the head, its diameter about equal to the length of the snout and *Aga.ssiz, Aincr. .Touni. Sci. Arts, 1854. :>;">H : t.vjx-' ETybopsis gracilia A.g. (i'Qoc, gibbous; • 214 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. • scarcely greater than the width of the interorbital space. Preorbital bone large, oblong, conspicuous, and silvery. Mouth rather small, hor- izontal, the lower jaw included, the edge of the premaxillary below the level of the eye, the maxillary not reaching to the vertical from the front of the orbit. Barbel quite small. Snout boldly and abruptly de- murred much as in C. amblops, the tip of the snout thickened. forming a -,<>rt of pad. Lateral line decurved. iiows of scales along the back converging behind the dorsal where the upper scries run out, as in Minniliifi cornutus. Fins rather higher and more falcate than in G. biyuttatux. The dorsal fill inserted well forward, over ventrals. Pec- toral fins pointed, not reaching ventrals, ventrals not reaching vent. Teeth -4-4, hooked, without grinding surface. Translucent greenish above; sides and below brilliantly silvery; cheeks and opercles with a. bright silvery lustre; fins plain ; a slight plumbeous lateral shade. Head 4£; depth 4. D. 8; A. 8; scales 5-42-4. L. 5 inches. Falls of the Ohio. (Jordan, Proc. U. S. N;ir. Mus. l.-7'J, :.'. •331. C. amblops (lint'.) Grd.— tilnr ('l»j,. Body rather slender, somewhat h'-avv anteriorly, not much com- pressed. Ilcad large, somewha.t ilattcned and broad above. Eye very large, longer than snout and longer than iuterorbital space, ."> in head. Month horizontal, subinferior, and rather small. Muzzle bluntly de- c.urved. Upper lip below level of orbit, maxillary not reaching the line of the front of the orbit. Barbel evident. Fins moderate. Lateral line somewhat decurved. Sixteen scales before, dorsal. Color transln cent greenish above ; scales somewhat dark-edged ; sides with a bright, >ilvery band, which overlies dark pigmenr. so that sometimes a plumbe- ous or even blackish band appcais: a dark band through eye around -nont ; males ..ithoul tubercles or red coloration. Head 1; depth f>. J). s; A.I- scales 6-38-4; teeth 1, 4-1. 1. L. L'-l inches. Ohio Va .ind southward. Southern specimens (v.ir. irhic/tclli) have the head narrower and the barbel rat her shorter. /:•••:.'< .' •,. Kni'. I. 'lit ii. ( >li. , . . Ajner. .imirn. Sri. ./»;,• n main :nnl //., clll <;nl. I'lor. Ai-;nl. > I'liih. l-.Mi, I--, -Mi: ' JOQVD. A. "id. N:it. S. i. |.~r,:i, . '/M/.S lii/iilinti* ( iiiiil I. nl:m, Ann. l.y . \.-il. Hist. JT. 1876, . Jordan. (ielieral foi in ol t lie preced in-. llea'd lon..r, nai ro\v<-i' t han inlhepre- •eding.lon-i-r than in the ., -:;.', in head, wider than he interorbital space. Mouth smaller, inferior, overhung by the bluntly 31. CYPRINID^E CERATICHTHYS. 215 decurved but not very broad muzzle. Barbels quite long and distinct. Thirteen scales in front of the dorsal. Fins well developed ; the first developed rays of the dorsal about twice the height of the last. Pale olivaceous; sides with a plumbeous silvery band, in some specimens forming a stripe through eye and snout, and a dark spot at base of caudal; cheeks silvery; snout in males red, with numerous dust-like tubercjes ; specimens in high spring coloration have the fins largely red. Head 4 ; depth 5. D. 8 ; A. 7 ; scales 5-36-3 ; teeth 1, 4-4, 0. L. 3 inches. Basin of the Altamaha, Georgia. (Nbcomis rubrifrons Jordan, Ann. Lye. Nat. Hist. N. Y. 1876, 330.) 333. C. liypsiiiotais Cope. Body much stouter, more elevated, and more compressed than in the preceding. Head short, broad above, much smaller and more conical than in the preceding. Outline of back rather abruptly declining behind front of dorsal fin, so that the base of the fin is oblique. Mouth inferior, horizontal, small, the maxillary reaching the line of the orbit. Barbels small. Eye small, 3i in head. Color silvery, with a double series of black specks along the lateral line, and a lateral band of dusted black- ish, which passes through eye and snout; males with the fins bright red, and the body with a deep violet lustre, as in Minnilus rubricroceus. Head 3| ; depth 4. D. 8 ; A . 8 ; scales 5-40-3 ; teeth 1, 4-4, 1. L. 3 inches. Santee Basin, in North Carolina and South Carolina. (Cope, Proc. Amer. Phil. Soc. Phila. 1870, 458 ; Jordan & Brayton, Bull. TJ. S. Nat. Mns. xii, 1878, 25. Ceratichthys leptocephalus Grd. Proc. Acad. Nat. Sci. Plaila. 1856, 213, from Salem, N. C., may be the same, but the description is wholly insufficient for determination. ) bb. Teeth one-rowed. 334. C. dissilllilis (Kirtland) Cope. — Spotted Shiner. Body long and slender, little compressed, with long caudal peduncle. Head long, rather flat above, the snout somewhat bluntly decurved, pro- jecting a little beyond the rather small, horizontal mouth; lower jaw included ; both jaws with the skin hard in front, forming a sort of lip laterally. Barbel considerably shorter than pupil, maxillary not reach- ing nearly to orbit. Eye very large, high up, somewhat directed up- ward, rather behind the middle of the head, forming more than one- third the length of the head. Opercle small. Dorsal rather large, its posterior border oblique; anal small; caudal well forked; pectoral rather long. Scales rather large, 22 in front of dorsal. Lateral line nearly straight. Olivaceous ; sides silvery, with a bluish lateral band, which is widened into several dusky spots, formed by dark punctulations, 2iG coNTKinrrniN.s TO NOKTII AMERICAN ICHTHYOLOGY — iv. and must distinct posteriorly: a dnsk\ band on head, through eyes aud snout; tins plain. Head -I!,: depth iH. D. 8; A. 7; scales 0-47-5 ; teeth -1-4, often with slight grinding- surface. L. 5 inches. Ohio Val- ley and tributaries of tin (ircat Lakes. (L< mi lit Kirtluud, J3ost. Journ. N;ir. Hist, iii, 341, 1340: Ceratichlhya dis- Ovpr. iVnii. :>'.>?: L\r: teeth 4-4. liio Grande, in New Mexico. (Cope.) Zool. Wl ;.l. W. Kinth Mi-r. v. tMii, 1S7(J.) 336. C. aestivalis (Cinl.) Coj..-. Head rontained about 4$ times in the total length. Differs from 0. ydidn.x and G. cci'ind!*, its American congeners, l.v a rather compressed body, elevated and arched upon its middle region, and tapering rapidly towards the peduncle of the tail. The snout is more protruding t! in G. (jdiiliix, the eye larger, and the ventral iins inserted somewhat moiv forwards. The scales an- also larger (about 30 in the lateral line in the iigi're.,, deeper than long, anteriorly subtruncated and posteriorly rounded, \\iih radiating furrows upon the latter section only. D. I, 8j A. i. 7. etc. The color is yellowish brown, somewhat lighter beneath th;u: above, with a silvery streak along the middle of the Hanks, liio San Juan, Cadareita, New Leon, ((jirnrd.) (Of course these little fishes ,<> intimate relation with the European genus (jobio, which i> ally o! .s>v/«o//7/<.\. with the te«-tl. ,-. 5-5, 3, and the barbel lateral and \.T\ l<,!i I Proi . At u:. \;, liila. L856, IK'.) 3:t^. €'. xclidii* Qrd. Jor. Uody vei\ >icnder. not elevated. Head .^lender and elongate, the snout piomiiieiit and taperi lCy< small, rather high, 4 in head. .Month small, siil-terminal, the maxillary not extending to the • I'i' Lateral line dee.urved. Scales rather large. Coloration sil'' • dn>i\ .uid a blj-ckish spot ;it base of c.audaL 31. CYPRINID^E CERATICHTHYS. 217 Head 3£; depth 5£. D. 8; A. 8; Lat. 1. 44. L. 2 inches. Milk River, Montana. (Girard.) (Gobio gelidus Grd. Proc. Acad. Nat. Sri. Pliila, 1856,188, and U. S. Pac. R. R. Surv. 248.) *** Species of small size, with the mouth subinferior and horizontal, with thickened lips; the dorsal fin inserted sliyhtly behind the ventrals, usually with a black blotch on its last rays; scales rather large, silvery. 338. C. labrosus Cope. Body slender, little compressed, the back not elevated. Head long, gently decurved to the muzzle, which scarcely overhangs the mouth. Mouth entirely horizontal, the maxillary reaching the orbit. Eye 3| in head. Dorsal inserted slightly behind origin of ventrals (not directly over, as stated in original description). Lips thickened. Barbels very long. Color silvery; sides sometimes with vague, dusty cross-bars. Head 4|; depth 5£. D. 8; A. 8; scales 6-34-4; teeth 1, 4-4, 1. L. 2£ inches. Catawba River, North Carolina. (Cope.) (Cope, Proc. Amer. Phil. Soc. Phila. 1870, 458.) 339. C. zaiieiillis Jordan & Brayton. Body long and slender, little compressed. Head rather long, narrow, and pointed, very slender in young specimens, stouter in adults. Snout decurved in profile, an angle in front of the nostrils Muzzle long, over- hanging the large mouth. Lips much thickened, the lower with a con- spicuous internal fringe of papillae. Barbels extremely long, longer than in any other of our Cyprinidcc, their length more than half the diameter of the eye. Eye moderate, nearly median, 3J in head. Scales moderate, closely imbricated, 16 in front of dorsal. Lateral line slightly decurved anteriorly. Fins rather small. Caudal deeply forked, its pe- duncle long and slender. Coloration pale ; a small, round black spot at base of caudal ; dorsal scales dark-edged ; a dark lateral streak, obso- lete anteriorly; large specimens with a large dark patch on the last rays of the dorsal, as in GUola analostana; base of the caudal with dark points; males in spring with the head and neck profusely tuberculate and the fins flushed with crimson. Head 4|; depth 4^. D. 8; A. 7; scales 5-40-3 ; teeth 1, 4-4, 1. L. 3 inches. Saluda River, South Carolina. (Jordan & Brayton, Bull. U. S. Nat. Mus. xii, 25, 1878.) 343. C. monaclius Cope. Body slender, somewhat compressed, not much elevated. Head long and rather slender, flattivsh above, with projecting muzzle. Mouth in- ferior, horizontal, small, the maxillary not reaching the eye, which is 218 CONTRIBUTIONS TO TsORTll AMERICAN ICHTHYOLOGY - IV. rather small, 4£ in head. Scales rather small. Lateral line somewhat decurved. Twenty-four scales in front of dorsal. Fins moderate. Color light olive; a metallic vertebral band; sides and belly silvery; no lateral hand; a black spot at base of caudal; muzzle dusky; membrane of upper posterior part of dorsal fin black. Head 4; depth 5£. D. 8; A. 8; scales S-5G-4; teeth 4-4. L. 4 inches. Tennessee Kiver. (Cope, Journ. Aead. Nat, Sci. Phila. t~07, -J-J7.) 93.— COUESIUS Jordan. (Jordan, Bull. Ilayden's Gcol. Surv. Terr, iv, 7e>5, 1878: type Nocomis milneri Jordan = /,> ttcHxviiiux diNximilis Grd.) iJody elongate. Head normal, not depressed, the profile convex. Mouth terminal, normal, a well-developed barbel at the posterior end of the maxillary. Teeth _?, 4-4, 2, hooked, without grinding surface. Scales rather small. Lateral line continuous. Dorsal fin over or slightly behind ventrals; anal basis short Size rather large. (Dedi- cated to Elliott Coues.) * Scales sinall, 00-70 in the course «>]' the lateral line. t About thirty scales in a transverse series from dorsal to ventrals. 341. C. squamileiitiis (Cope) Jor. Form stout, profile nearly plain. Muzzle not prominent. Mouth horizontal, the maxillary not reaching the orbit. Eye rather small, 4~ in head, shorter than snout. Isthmus wide. Barbel oolite small. Dor- sal tin slightly in advance ol' ventrals, behind middle of the body. Scales quite small. Olivaceous above; sides silvery; a lateral band of dark punctulations. Fins plain. Head :!.',; depth 5. D. 8; A. 7; scales 17-GG-14; teeth L', 1—1, 1. Henry's Fork of Green River, Wyoming. [C"i (Ceratiohthys squamilentua Copo, Haydi : rv. Wyom. 1*70, l-l-J, 1872.) HAbont 20 scales in a trans' rpun d..: .•utral.H. 342. <:. dissimilis (Grd.) Jor. Form of ^i /itottluN ct»-j>o/-s compressed. Head ll.itti.-h above, ihe snout broad, ])rojert in- over the large, oblique mouth, maxillary reaching front of e.\ e. liai'hcl \fi\ t -vident. Kye. large, as long as snout, a hout I in head, 1 A in interorbilal space. Scales small, crov, tied foi u ;inU. t IIO.M • -.in I he l)aek smaller. Dorsal lia begin- ning o\ •(•!• 1,M ray of \entrals. I>usk\ above; .sides somewhat silvery; in obscure dusky band through ej .n«ixi,oiit; lins plain. IIead4^; 31. CYPRINID.E PLATYGOBIO. 219 depth 4£. D. 8; A. 8; scales 11-68-7 ; teeth 2, 4-4, 2. L. 6 inches. Lake Superior to Upper Missouri region ; probably abundant. (? Gobio plumbers Agassiz, Lake Superior, 366 : Leucosomus dissimilis Girard, Proc. Acad. Nat. Sci. Phila. 1856, 189, and U. S. Pac. R. R. Surv. x, 250 : Nocomis milncri Jordan, Bull. U. S. Nat. Mus. x, 64, 1876 ; Jordan, Bull. Hayden's Geol. Surv. Terr. iv, 784, 1878.) 343. C. prosthcmius (Cope) Jor. Body fusiform, rather slender. Head small, the muzzle abruptly de- scending. Mouth rather small, somewhat oblique, the maxillary not reaching to the orbit. Eye 4 in head. First ray of dorsal opposite ven- trals. Color dusky; a plumbeous lateral band; white below; fins plain. Head 5 ; depth 5. D. 8 ; A. 7 ; scales 11-63-8, somewhat crowded anteriorly; teeth 2, 4-4, 2. L. 6 inches. Upper Great Lakes. (Ceratichthya prosthemius Cope, Cypr. Pcnn. 1866, 1565: Ceratichthys plumbeus Gun- trier, vii, 442.) ** Scales rather large, about 50 in the lateral line and 10 in a transverse series. 344. C. pliysignatliaas (Cope) Jor. Body slender, the caudal peduncle stout. Head wide and depressed. Dorsal outline little arched, the profile descending steeply to the lip. Lower jaw included, maxillary reaching anterior border of orbit. Bar- bels well developed. Eye J§ in head, 1£ in muzzle. Twenty-three rows of scales in front of dorsal. Dorsal fin inserted in front of ventrals. Olivaceous above, white below ; a plumbeous lateral band ; fins plain. Head 3§; depth^. D. 8; A. 8; scales 5-49-4; teeth 2, 4-4,2. Arkansas Eiver at Pueblo. (Cope.) (Ceratichlhys physignathus Cope, Wheeler's Expl. W. 100th Mer. v, 651, 1876.) 94.— PLATYGOBIO Gill. Flat-headed Chubs. (Gill, Proc. Bost. Soc. Nat. Hist. 1861: type Pogoniclitliys communis Grd.) * Body rather elongate, somewhat compressed. Head rather short, broad and depressed above. Mouth normal, rather large, subter- minal, with a well- developed barbel at its angle, at the extremity of the maxillary. Scales large. Lateral line continuous. Dorsal in- serted anteriorly, rather in front of the ventrals. Teeth 2, 4-4, 2, with rather narrow grinding surface. Size large, (^aru?, broad ; Latin gobio, a gudgeon; the broad, Hat head resembling the head of a Gilo,.) 345. P. gracilis (Rich.) Gill & JOT.— Flat-headed Chub. Body rather elongate, somewhat compressed, little elevated. Head small and short, its upper surface very broad and depressed, the inter- NTRIBUTIONS 1<> V>l;TH AMI, KHAN ICHTHYOLOGY - IV. orbital width being nearly halt' the- length of the head. Mouth ratlin large, .slightly oblique, the upper lip on the level of the lower part <>!' the . the maxillary reaching the line ol' the front of the eye, the upper jaw V&cy protractile, the lower jaw ineluded. Eye small, rather high up and anteiie.r. , -1-1 L. 1L' inches. Kocky Mountain re-ion from the Kansas and Yellow- Stone liivers to the Saskatchawan ; abundant. (L Kirli. !';t:ilia I'.ol .-AllltT. l'i '. t'JU: . Ar;ul. Xui. Sri. I'hila. 1-.">U, 183, and U. S. 1'ar. K'. K. Surv. x, -'•IT: .'nit Gill, Irhtli. l'a;i:;:iii Simpson's .Surv. -li.i-': /'.>.,•. ./,'r/ ••'.•Hi- < ;iiu- lhcr. \'ii. '.'I' iixliiit, tin* (iiintlicr, vi; 316. P. pallidus F«>rin -s. >p. n.,v. flie depth is contained 4ij times in length, and the head -1. Thee\< equals the snout, and enters length of head .'J;^- times and the interor :e twice. The head is ilat above and the snout overhangs the Tiionth. whirh is large and wide, with a maxillary barbel about one-third a- long as the e\r. The mandible reaches a vertical line drawn thru: middle of the iris in front. The greatest depth of the head enters n- i'-ir The scales are <>-.V»-,~i. with -L' rows before dorsal, where they are nineh smaller than elsewhere. The lateral line is straight, ' pt for a few scales in front. flic pectoral fins are large and pointed, leaching the ventrals. and the latter attain the vent. The front of the. dorsal i- >itnated a tri lie before the ventrals and a lit tie nearer snout than caudal. I». >: A. s. The color in alcohol is plain, with a plumbeous lustre along sides, and traces of a dusky lateral stripe behind dorsal. The pharyngeai tee; li are stout, :'. 1- I, L', hooked, wit h masi i calory .surface. I.. i'A inches. < Mie specimen I'lom the Ohio Ifivcr at 10. pmbably adult, as the snout is tnberculai (/'Vi/Vyr.v, MSS.) Chubs. "I/mi,- \ li-.-Un : < 'Ini. I'.-iird.) r.1 182 kmolihu R&f, = Cyprinw oorporalia Mit( robust. Head lai Moulh lerininal, tlie n]>per jaw j>ro- ^mall barbel on the maxillary just above \\< extremity. In. 31. CYPRINID^E SEMOTILUS. 221 testinal canal short. Teeth 2, 5-4, 2, hooked, without masticatory sur- face. Scales moderate. Lateral line continuous. Dorsal more or less posterior to ventrals. Anal basis short. Species of large size, differing from Squalius in the presence of a maxillary barbel. («, banner — 1. e., dorsal fin; the second part of the word was elsewhere used by Kafinesque to mean "spotted". * Insertion of dorsal fin evidently behind veutrals and notably behind the middle of 1 ho body ; scales reduced in size and much crowded anteriorly ; a black spot at base of dorsal iu front. (Semotilus.) 347. S. corporalis (Mitch.) Putn.— Chub; Horned Dace. Body stout, the dorsal outline arched in front of the dorsal, the body tapering' backward from a point considerably in advance of the dorsal, so that the base of that fin is oblique. Head large and heavy, broad and rounded above. Snout broad. Mouth broad, oblique, the lower jaw slightly included, the upper lip just below the level of the pupil, the maxillary barely reaching the front of the pupil ; maxillary bar- bel small, not evident in specimens of less than 2 or 3 inches in length. Eye rather small, about 5 in head. Scales small, considerably crowded and reduced anteriorly, about 30 series in front of the dorsal fin. Lateral line considerably decurved. Fins small ; the dorsal well behind ventrals, its last ray well in advance of the base of anal. Color dusky bluish above ; sides with a vague dusky band, black in the young, disappearing iu the adult; belly creamy, rosy-tinted in the males in spring ; dorsal fin always with a conspicuous black spot at the base in front, which is bordered with red in the male ; a dark vertebral line ; scales everywhere edged with dark puuctulations ; a dusky bar behind opercle ; males with the snout coarsely tuberculate in spring. Head 3f ; depth 4. D. 7 ; A. 8 ; scales 9-58-6 [those in the lateral line varying from 52 (? var. pallidus, Alabama to Arkansas) to upwards of 65J ; teeth 2, 5-4, 2. L. 10 inches. Western Massachusetts to Georgia and Upper Missouri ; everywhere very abundant, ascending small streams. (Cyprinns corporal-is and atromaculatus Mitchill, Amer. Month. Mag. ii, 324: Semotilits dorsalis and ceplialus Eafinesquo, Ichth. Oh. 49 : Leuciscus iris and storm Cuv. & Val. xvii : Semotilus corpordlis Cope, Cypr. Perm. 363 : Leucosomus corporalis Gunther, vii, 269 : Leucosomus pallidus (Lat. 1. 52), Leucosomus incrassatus (Lat. 1. 64), Semotilus macrocephalus, and Semotilus speciosns Girard, Proc. Acad. Nat. Sci. Phila. 1856, 251, 252, 204.) 34§. S. tlioreaiiianus Jordan. Body short and rather stout, abruptly narrowed behind dorsal. Head short and thick, almost round. Mouth large, oblique, the jaws equal. 222 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. Barbel lateral, well developed. Kye small, 5 in head. Cheeks swollen, Scales larger than in N. cn/yy.>/v///,s-. not much crowded forward. Lateral line much declined. Dorsal iiu entirely behind vent nils, its last ray over (he lirst ray of the anal. Fins all small. Coloration of 8. corpo- ralix; the black dorsal spot distinct. Head .'•;} ; depth 4. D. 85 A. 7j dee :»_is_f>; teeth L', fi-l, L'. L. 1 inches. Flint lliver, Georgia. (Jordan. IJull. U. S. Nat. Mus. >:, (,::. is?7.) "' lusiTtiiiii (if dorsal lin scarcely behind ventrals: scales nearly equal over the body; no conspicuous black dorsal spot. (Leucosomus Heckcl.) « 349. S. bUllariS (Raf.) JoT.—FaU-Jish ; Siln-r Chub. Body oblong, robust, little compressed. Head large, convex, the snout bluntly conic. Mouth large, terminal, somewhat oblique, the lower jaw included; premaxillary below the level of the eye, the max- illary barely reaching the front of the orbit. Eye moderate, rather high up and anterior, 4£ in head. Barbel shorter than pupil, not evident iu young specimens. Scales large, 22 in front of dorsal, not crowded an- teriorly. Dorsal fin slightly behind middle of body, just behind ven- trals. Fins moderate. Coloration brilliant; steel-blue above; sides and belly silvery; males in spring with the belly and lower fins rosy or crimson. Head 4 ; depth 4. D. 8 ; A. 8; scales 8-45-4 ; teeth 2, 5-4, 2. L. 18 inches. Largest of our Eastern Cyprinidce. Abundant from Massachusetts to Virginia, east of the Alleghanies. (Cyprinus &uHaris Ratinesque, Amur. Mouth. Maj;. and Crit. Rev. 1817, 120: Lcucisciu argenteus and pulchellas Storcr, Kept. Fish. Mass. 1839, 90 : Chiloncmua pulcliellu* Storer, Fish. Mass. 28G : Leucosomu* cat ! laird : Semotilus rJtotheus Cope, Cypr. Perm. 362 : Lfucosomvu jinlchclliia Giinther, \\i. -J 06.— SYUIUIETRURUS Jordan. (Jordan, Bull. Haydcn's (Jeol. Surv. Terr, iv, 783, 1878: type Pogonichthys argijreiosut Girard.) This genus dill'ers from Pogonichthys chiefly in the caudal lin. which is developed as in Scmolil.ua and other related genera, the two lobes equal, and (he rudimentary ha- s comparatively lev,- and small. The. pre.M-iicc of grinding sui ' :i tho teeth and the position of the barbel chieily -•,;. stump ; o»<>», tooth.) 352. S. sigiiifcr Uarm.m. Dorsal and ventral outlines similar. Eye large, longer than snout. Mouth oblique, the maxillary not reaching front of eye. Lower jaw the longer. Pectorals not reaching veutrals, the latter to anal. Brown; silvery below ; a broad brown lateral band, bordered above by a nar- row silvery line. Head 3§; depth 3§. D. 8; A. 8; scales G-35-L* ; " teeth 3-3, stout, stump-like, with convex summits." Lago de Parras, an isolated lagoon in Coahuila, Mexico. (Gorman,) (Carman, 1. c. 1)0.) 98.— UIYLOCIIILUS Agassiz. (Mylocleilus Agassiz, Amcr. Journ. Sci. Arts, 1855, 229: typo Mylocheilus lateraUt Agussiz = Lcuciscus caurinu* Rich.) Body elongate, not elevated, little compressed. Ilead rather short, conic, somewhat pointed. Mouth rather small, little oblique, the lower jaw included; maxillary with small barbel at its end; upper jaw pro- tractile. Scales moderate not closely imbricated. Lateral line de- enrved. Dorsal fin beginning nearly opposite ventrals. Caudal fin with the rudimentary rays little developed. Anal basis short. Intestinal canal about as Ion- as body. Teeth L', ;">-f», '2, or 2, ."5-4, 2, two or three of those in the main row molar, much enlarged, blunt and truncate >ve. (A third deciduous row sometimes present, according to Girard, in this -rims and in Mylopharodon; we have seen nothing of the kind.) Si/.c lar--.-. (:>.>>).<>-, grinder; ^^."T, lip.) 353. II. ranriiius (Richardson) <;nl. — Columbia Chub. shorter than snout, ."5 in head; interorbital space broad, convex. Month hoiixontal or neai'ly so, the maxillary not reaching the front of the eye; suborhif :il hones wide; preorbital elongate. Color dark aliov. : sides -ilvery, a dark lateral band; below this a pale stripe; under which is a dark stripe which extends about to the vent; fins plain; belly and pale stripe red in spring males. ETead4-|; depth D.8; A Lee i:;-70-l<>; teeth 2, ">-5, 2. L. 12 inches. Streams 31. CYPR1NID.E PTYCHOCHILUS. 225 chiefly west of the Cascade Kange, from California to British Columbia, often entering- the sea; abundant. (Cyprinus (Leuciscns) caurinus Richardson, Fauna Bor.-Amer. Fishes, 1836, 304: My- locheilus Jntcralis, caurunis, and fralerculus Girard, U. S. Pac. R. R. Surv. x, 213-215: LcitcosoniHs caurinus Giinther, vii, 270.) 99.— JHYJLOPIIARODON Ayi-es. (Ayres, Proc. Cal. Acad. Nat. Sci. 1855, 33: type Mylopharodon robust us Ayres = Gila conocephala B. & G. ) Body elongate. Head large, pike-like, the upper jaw not protrac- tile; no barbel. Teeth 2, 4-5, 2; two or three of the teeth in the main row molar, truncate or bluntly rounded at the apex, much enlarged. Month terminal, rather large, with thickened lips. Scales rather small. Lateral line continuous. Dorsal tin inserted behind the ventrals. Anal basis short. Size very large. This genus has been confounded with MylocliiluSj from which it differs in the nou-protractility of the upper jaw. (Shortened from Mylopliarynyodon — ,uuA«f>, 'J'J'J : (iilit Ay ITS, 1'roc. Cal. Acad. Nat. Sci. 1^54, IS: I'ti/chochcUits oiryont-nsiH and yrandix Girard. I*. S. I'm-. R. R. Surv. Fish. '298-300: Leuciscus grand!* and oregoneims Giin- ther, vii, 239.) 356. P. rapax Gni. llixly shurter and deeper than in Pt. oregonensis. Head similar, rather iiiui-c depi-essed above. Mouth large, the maxillary reaching middle of eye. Lateral line moderately decurved, passing along the median line of I he body between dorsal and ventrals. Dorsal inserted but little be- hind vent nils. Coloration dark; the sides somewhat clouded; lins plain. Head :^ : depth 4j-;. I). !>: A. S; Lat. 1. 78. L. 12 inches. Monterey, California. Perhaps not distinct from the Ion-going. (Girard. I'mr. \< -ad. Nat. Si-i. I'liila. I .-:.(!, 'Jd'.t. and f. S. 1'ac. R. R. Snrv. x, 300.) P. haiTordi Jor. A (Jill.. IMHIII of 1'. t>r<-;iast anterior margin of the eye. Eye small, 2^ in snout, 7 in head. Lateral line very strongly decurved. Fins low, the dorsal evidently behind ventrals. Scales very small. Coloration plain, darker above. Head 3^; depth 5£. D.9; A. 9; Lat. 1. 104; teeth 2, 4-5, 2. Colorado River; abundant. . (Girard. Proc. Acad. Nat. Sci. Phila. 1856, 209, and U. S. Mex. Bound. Surv. Ichth. 63.) 1O1.— OIL, A Baird & Girard. (Baird & Girard, Proc. Acad. Nat. Sci. Phila. 1853, 363: type Gilu robuxta B. & G.) Body elongate, little compressed, the back arched, especially in the adult; the caudal peduncle typically extremely long, slender, con- tracted, much narrower than the base of the caudal fin, which is widely forked, with its basal fulcra very much developed. Head in typical spe- cies broad, depressed, its profile concave. Mouth large, horizontal, and overlapped by the broad snout. Dorsal fin behind the middle of the body, slightly behind ventrals. Anal basis short. Intestinal canal snort Scales very small, little imbricated, sometimes scarcely imbricate at nil, longer than deep, especially posteriorly. No barbel. Pseudobrauchire present. Teeth 2, 5-4, 2, close set, compressed and hooked, without grinding surface. Vertebrae about 46 (5 or G more than usual in Squalin;)). Intestinal canal short; peritoneum dusky. Species of large size, the typical form remarkably unlike the usual Cyprinoid type, but varying through a series of intermediate forms directly into Squalius, so that the genus is hardly distinguishable by any definite technical character, unless the greater number of vertebrte be found constant. ( Gila, the name of the river where the typical species was first obtained.) * Head depressed anteriorly, the occipital region high, so that the profile is notably concave. 359. Ci. clegaiis B. & G. The extreme species of this type. Body elongate, somewhat com- pressed, the region before the dorsal elevated, forming a sort of hump, the dorsal fin inserted on the downward slope of the back, so that its base is quite oblique. Caudal peduncle extremely long and slender, as 228 CONTRIBUTIONS TO NORTII AMERICAN ICHTHYOLOGY IV. broad as deep, and nearly terete, its length (from end of anal to middle of base of caudal) li times the length of the head, its least depth about one-seventh of its length, its extremity dilated and compressed. Head short, broad, the snout depressed and broadly rounded; the anterior part of the head from behind the eyes broad and depressed; the pos- terior part high, so that the profile forms a concave arc. Mouth rather large, nearly horizontal, the upper lip on the level of the lower part of orbit, the maxillary extending to the front of the orbit, the lower jaw on all sides included. Skin of the lower jaw hard. Eye small, anterior, placed low, 5 in head. Isthmus narrow. Gill-rakers rather weak. Fins all long and falcate. Pectorals reaching ventrals. Caudal tin deeply forked, its lobes long and pointed, the upper somewhat the longer; the rudimental basal rays strong, about 12 in number on each sides. Scales scarcely imbricated at all, on the caudal peduncle hardly touching each other, on the sides of the body much longer than deep; their texture thin and membranaceous; scales on back and belly much smaller than those on the sides. Coloration bluish above, pale below. Head 5; depth 5. D. 0; A. 10; scales 23-98-10; teeth 2, 4-5, 2. L. 12 inches. Colorado and Gila Rivers. (Baird & Girard, Proc. Acad. Nat. Sci. Phila. 1853, 369; Girard, U. S. Par. 11. R. Sui v. x. 286: Leuciiicw tlegans Giiuther, vii, 241.) :;OO. G. robusta Baird &, Girard. Body elongate, the back elevated and the head depressed as in (r. clrtinitti, but the caudal peduncle notably stouter, its least depth about one-third its length, 3;J in the length of the head. Mouth large, the upper lip o;i the level of the lower part of the orbit, the maxillary reach- ing past the front of the orbit. Fins rather lower than in (f. t'leiiintx. the pectorals in the male reaching the ventrals, but falling short in the female. Kye small, low, anterior, 5-S in head. Lateral line much de- curved. Coloration plain. Head 1: depth 5. D. '•>: A. !>; scales 17_-1<>: teeth 2, 5-4, 2. L. 12 inches. Kio Colorado and Kin Cila. i IJainl A (Jirard. I'm.-. A. -ail. Nat. Sri. I'hila. 18.">::. 368, and 1". S. far. K. K. Snrv. \, •.'-.".: l.'in i-riiM rnbimtHi Giinthrr, vii. 241.) :;<>!. C.. ;.-] uhailli I'.ainl A (Jiranl. (ieneral form of the preceding, with similar head and caudal pedun- cle, l»tit with rather larger and more closely imbricated scales. Tpper lip below level of e\e. ma xillary reaching front of orbit . Caudal fin less deeply forked, and pectorals not reaching nearly to ventrals. Colora- 31. CYPRINID^E GILA. 229 tion plain, darker above. Head 3f ; depth 4£. D. 9; A. 9; Lat. 1. 82. Rio Gila and Colorado Basin. (Baircl & Girard, Proc. Acacl. Nat. Sci. Phila. 1853, 389; Girard, U. S. Hex. Bound. Surv. lehth. 01 : Leuciscus grahami Giinther, vii, 242: Ptychocheilus rorax Girard, Proc. Acad. Nat. Sci. Phila. 185(5, 209, aud U. S. Pac. R. R. Surv. x, 301. The type of "vorax" examined by us is a true Gila.) 362. G. affiuis Abbott. A species allied to the preceding, described as follows : " The body is slender, tail greatly attenuated, head constituting something more than one-fifth of the total length. Eye rather small, subelliptical, its diam- eter G£ times in the entire length of the head. The posterior extremity of the maxillary extends to a vertical line drawn posteriorly to the an- terior edge of the orbit. Anterior margin of the dorsal fin nearer the base of the caudal than the extremity of the snout. Anterior margins of the ventral fins somewhat nearer the extremity of the snout than the base of the caudal. The lateral line is nearly concurrent with the ven- tral outline. The numbers of the fin-rays are : D. 10 ; P. 1C ; V. 8 ; A. • 9 ; C. 28£." (Abbott.) Dull violet above, pinkish below. Kansas River ; Platte River. (We have some time since examined specimens from Platte River, and thought them distinct from G. robusta and G. grahami, but having lost our notes are unable to add to Dr. Abbott's account.) (Abbott, Proc. Acad. Nat. Sci. Phila. 1860, 474.) 363. G. gracilis Baird & Girard. Body slender, the back not much elevated, the caudal peduncle not very slender, about twice as long as deep. Head large, its upper pro- file not very strongly concave. Mouth large, terminal and oblique, the upper jaw scarcely longer than the lower, maxillary reaching past the front of the eye. Interorbital space broad. Pectorals falling consid- erably short of veutrals. Caudal deeply forked. Dorsal well behind ventrals. Head 3£; depth 4£. D. 9; A. 9; Lat. 1. 88. Gila and Col- orado Rivers. (Baird & Girard, Proc. Acad. Nat. Sci. Phila. 1853, 369; Girard, U. S. Pac. R. R. Surv. x, 237: Leuciscus zunnensis Giiuther, vii, 241.) ** Head conical, scarcely depressed, the profile not concave, a. Belly scaled. 364. €J. cuiiorii Baird & Girard. Body slender, the back not notably arched. Caudal peduncle very slender, its least depth about one-fifth its length. Head rather small, conic, scarcely depressed above the eyes, its profile continuous with that 230 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY— IV. of tin- back. Mouth small, nearly terminal, the maxillary not reaching to the front of the orbit. Eye rather large, anterior, not placed low. Scales small, especially on the back and belly, the exposed surfaces longer than deep. Fins large; the pectorals reaching ventrals ; the caudal deeply forked. Dorsal I'm inserted nearer the top of snout than to the base of caudal. Head 4£; depth 4=V. D. 9; A. 0; Lat. 1. 08. Eio Gila. (fth-tml) ( Hainl ,V cirard, Proc. Acad. Nat. Sci. Pkila. IH'iS, 388; (Jirard, U. S. Mex. Bound. Surv. Irlitli. (>'2: J.i'iidxctts ciiiorii Giiuther, vii, 242.) :{<;•>. <;. nan «-:i < .>p.-. liody rather slender; profile and interorbital region gently convex. Maxillary not reaching line of orbit. Candal peduncle slender, its least depth 4 in head. Eye 5 in head. Pectorals not reaching ventrals. Dorsal behind ventrals. Silvery white; back narrowly dark-shaded; pectoral fins pink. Head 4; depth 4|. D. 9; A. 10; scales 21-?-13; teeth 2, 5-4, 2. Green IJiver (Rio Colorado). (Cope.) (Cupr, Hayd.-n's <;.•.»] Surv. Wynin. 1870, 441, 1872. aa. Belly Mi-alrlrss. 366. G. semi II ml a Cope & Yarrow. Body moderately deep, with slender and tapering caudal peduncle, the least depth of which is about one-third its length. Back little ele- vated, not arched in front of dorsal. Head small, transversely convex, its profile continuous with that of the back and not concave. Mouth rather small, oblique, terminal, the upper lip opposite the middle of the orbit, the maxillary not reaching the line of the orbit. Eye large, rather anterior, but not very low, its length 4 in head. Fins moderate. Dor- sal slightly behind ventrals. Brownish above, lower fins pink. Head 5; depth .Vf. D. 10; A. 10: scales 21-98-12; teeth 2, 5-4, 2. L. « inches. Kio V irg.cn, in Utah. (Cope.) This species forms a transition to Sijualittx and other normally formed Ci/jtriniilu: ((npr A Yarrow, /ool. Wlirdci's Kxpl. W. 100th MIT. v, 666, 1876.) 102.— Snce. (7V7<*fi.s P.onaparli-; I'lu-innln, Tii/omti, Siboma, and ClinoHtomna (iirard.) (Bonnpartr. J-'aiina Italica, 1837, •[ »'• : type CyprinHx lcncincitn L., the Eurojn'au •• Dace".) Body oblong, compress(!il or robust, covered with moderate or small -(ales, which arc not closch imbricated. Lateral line complete, de- curved. Mouth lai'gc or small, usually terminal, the lips normal, with- out barbel. Teeth mostly 2, .~>-4, 2, sometimes 2, 5-5, 2, or 1, 5-4, 2, . 31. CYPKINID^E SQUALIUS 231 hooked, with narrow grinding surface or none. (Grinding surface present in Squalius leuciscus, obsolete in most of our species.) Anal basis short or somewhat elongate. Dorsal tin posterior, usually behind ventrals. Intestinal canal short. Size generally large. A very large group, one of the largest current genera in ichthyology, represented by numerous species in the rivers of Europe, Asia, and North America. Most of our species have been poorly defined. The majority of Girard's original types have been preserved, and the descriptions here given are • mainly taken from them. Much larger series of each form are neces- sary before the species can be properly discriminated. Individual irreg- ularities in dentition are common in this genus. (From squalus, a shark; some early writers on ichthyology having called the typical spe- cies Squalus minor, for no evident reason.) The species may be divided as follows : * Teeth normally without grinding surface. t Caudal peduncle not very stout, its least depth not two-thirds the length of the head. t Mouth very wide, the lower jaw much projecting beyond upper, the upper lip on the level of the middle of the pupil, and the maxillary reaching to be- low the pupil ; body elongate, compressed ; dorsal well backward (CLi- NOSTOMUS Grd. ) elongatus, vandoisulus, estor, funduloides. It Mouth moderate or small, terminal, oblique, the lower jaw little projecting, premaxillary below the level of the pupil, and the maxillary not reaching to the pupil. (TiGOMA Grd.) a. Anal basis elongate, its rays 10-12.. ..lujdroplilox, tcenia, montanus, hnmboldti. aa. Anal basis short, its rays 8 or 9. 1). Scales in lateral line 50-65. cruoreus, ardesiacits, pandora, margaritus, gula, pulclier, egregius, lineatus, graciUs, conformis, bicolor, obesus, purpurcus. bb. Scales in lateral line G5-80. pulchellus, intermedius, aliciw, copei, niger, conspersus. tt Caudal peduucle very deep and compressed, its least depth nearly equal to the greatest depth of the head ; dorsal over veutrals ; scales rather large (SiBOMA Girard) . . , gibbosus. ** Teeth with evident grinding surface. (SQUALIUS.) o. Robust species, the depth 3-3£ in length ; lateral line less than 60. rhomaleus, squamatus, atrarius, crassus. cc. Slender species, the depth 4-4J in length ; lateral line 60-70 (CHEONDA Grd. ) cocruleus, cooperi, nigrescens, modestus. * Teeth (normally) without grinding surface (various irregularities often present, so that the character has little value). t Caudal peduncle not very stout, its least depth not two-thirds the length of the head. t Mouth very wide, the lower jaw much projecting beyond upper, the upper lip on the level of the middle of the pupil, and the maxillary reach- ing to below the pupil ; body elongate, compressed ; dorsal well back. (Clinostomus Girard.*) * Girard, Proc. Acad. Nat. ScL Phila. 1856, 211: type Luxilus elongatus Kirtland («Azi>ca, to incline; 6TO/.KX, mouth.) 232 ('oxTKnuTioxs TO NORTH AMERICAN ICHTHYOLOGY — iv. 3G7. S. <>loBi^allll)li(|iic: the lowrr jaw notably projecting, with a small knob at the symphysis; upper lip on the level of the pupil; maxillary extending to the middle of the orbit ; posterior angle of operele acute. Kye mod- erate, nearly 1 in head. Scales very small. Fins short and high, the dorsal somewhat behind ventrals. Lateral line decnrved. Color dark bluish: the scales mottled with paler; sides with a broad black baud; belly more or less silvery; the front half of the lateral band bright crimson in spring males; the belly and lower fins more or less reddened; a dark vertebral band. Head 4; depth 5. D. 8; A. 0; scales 10-70-5; teeth l', 4-5, ± L. 5 inches. Great Lakes and Upper Mississippi Val- ley, chiefly from Pennsylvania to Minnesota. (Liixilus rlongattts Kiitlaml, Kept. Zool. Ohio, 169, and iu Boat. Journ. Xat. Hist. iii. :;;;:»: Leutiacua elongates Giiniher, \ii.'Jl.~>: CHuoxtomus i'li.ni/atns Giranl, 1'ror. Acad. Nat. Sci. Phila. lf\r>(», ~Jlv!: Gild cloin/ata Jordan, MO: CUnOBtomus proriger Cope. Cypr. Pciiu. :{?.">: Lniciscus proriger Giinthcr, vii, 245: Gila proriycr Jordan, 300 (may be a dilic-rcnt species; sides more compressed and more silvrr\ : I. at. 1. l'>:'>: tcrth ','. -I-."), 1; coir.inoii. \\ith the other.) 36W. S. vandoiSliltlts (Val.) Jor & Gilli. Uody oblong, deep and compressed. Head rather large. Mouth large, oblique, the lower jaw projecting, and the mandible extending to the pupil. Eye moderate, 3i in head. Lateral line decurved. Color bluish green; some of the scales of the back irregularly darker, pro- ducing a mottled appearance; no dark lateral band; males in spring with the region behind the head and above the pectorals as far back as the anal of a bright rose-red, brightest anteriorly. Head 3^; depth :;•-;. !>.!>; A. S; Lat. 1. 53; teeth U, 5-5, ± L. 5 inches. Virginia to (leorgia; abundant. LeudsoiU randoimtluii Cuv. A: Val. xvii. 111?: (.'Huoiitoiim* ujjhiix (lirai'd, 1'roc. Acad. Nai. Sci. I'liila. l-.'.C,, -Jl'J: I.< nt 'mciis rntHlaixiiliix (iiinthcr, vii, i*.">(i: l.i'iicixrux ajjinin fiiinllicr, \ii. '.'.".7: I'liim-tinim:; nffinix C'opc, Journ. Acad. Nat. Sci. I'liila. l~i;~. 228: C.iln ruiidiiixnlii Jordan iV Uraytmi. I'li-.H. I'. S. Nat. Mils, xii, ','1. :iGJ). S. 4'stoi- Jordan A. J'.rayton. Body elliptical-elongate, eom]>resscd, the caudal peduncle rather long, bin not so long as head. Head very long and large, flattish, but not broad abo\e. .Month larger than in any other of our Ci/)>rini(l(r. very obli(|iie. the upper jaw on the level of the pupil, the maxillaries ex- tending to opposite the middle of the orbit, the length of the gape a little more than half the length of the head, the lower jaw considerably the longer. ICye rather large, less than snout, -1 in head. Scales mod- 31. CYPRINID^E SQUALIUS. 233 crate. Lateral line strongly decurved ; 23 series of scales in front of dorsal liu. Fins high. Color dark olive above, many scales irregularly darker; sides silvery; no dark lateral band; a broad shade of deep rose-color along the sides in spring males, below which most of the belly is bright crimson, these red colors brightest anteriorly. A nar- row, dark lateral streak like a pencil-mark, from head to tail, overlaid by the scales. Head 3%; depth 4J. D. 8; A. 8; scales 8-50-5; teeth 2, 5-4, 2. L. 4 inches. Cumberland and Tennessee Eivers. (Gila cstor Jordan & Brayton, Bull. U. 8. Nat. Mus. xii, 66: Gila estor Jordan, 300.) !5?O. S. fui£«luloi«les (Grd.) Jor. & Gill.. Body rather elongate, somewhat compressed, with arched back and rather slender caudal peduncle, the latter longer than head. Head moderate, smaller than in any of the preceding species. Mouth as in the preceding, but less deeply cleft. Eye large, 3 in head. Dusky above; a dark lateral baud, with a narrower pale streak above it; belly and lower part of head yellowish, red in males in spring. Head4£; depth 41. D. 8; A. 8; scales 9-48-4; teeth 2, 5-4, 2. Streams tribu- tary to Chesapeake Bay, south to North Carolina. (Cope.} (Clinostomus fuiiduloides and carolinus Grd. Proc. Acad. Nat. Sci. Phila. 1856, 212: CHnostomux funduloides Cope, Cypr. Perm. 376: Leuciscus funduloidcs Giinther, vii, 256.) ft Month moderate, terminal, oblique, the lower jaw little projecting, the premaxillary below the level of the pupil, and the maxillary not reaching to pupil. ( Tigoma Girard.*) a. Anal basis elongate, its rays 10-12. 371. S. liyds-opBlloX (Cope) Jor. & Gilb. Body rather slender. Head small ; front straight. Mouth rather small, oblique, the maxillary just reaching line of orbit, lower jaw projecting. Eye small, 5 in head, 1£ in iuterorbital width. Anal fin long. Color olive above, with a dusky lateral border, below this a crimson band, and still lower a blackish baud, which runs above the lateral line to the base of the caudal fin; cheeks, sides, and belly crimson anteriorly in males, silvery in females. Head 4|; depth 4£. D. 8; A. 11; scales 15-58-7; teeth 2, 5-4, 2. L. G inches. Blackfoot Creek, Idaho. (Cope.) A species intermediate between the typical Clinostomi and the Tigomce, closely related to S. montanus, etc. (Clinostomus hydrophlox Cope, Hayden's Geol. Surv. Mont. 1871, 475, 1672.) * Girard, Proc. Acad. Nat. Sci. Phila. 1856, 205: type Gila puchella 13. & G. (A coined name. ) 234 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. . K. fU'aia (Cope) J. A: <;.— /.(•"//(»>• -*M<"? Min»oic. Body rather elongate, but deep and compressed, formed as in Clino- xtnmu* proper. Head rather small, short, compressed, but broad above, i lie jaws equal. Mouth oblique, short, the maxillary reaching the front of the orbit, the upper lip opposite middle of orbit. Eye large, 3£ in head, equal to iuterorbital space. Lateral line decurved; 33 scales in front of the dorsal tin. Coloration greenish silvery; the back dusky; a blackish lateral band, between two silvery.stripes; the lateral band and below bright orange, red in the males. Head 4£; depth 4. D. 9; A. 10 or 11; scales 12-58-5. L. 3-5 inches. Salt Lake Basin; abundant in Provo l\iver. Very close to the next, differing in shorter anal and rather deeper body. (Clinoxtnmiix tti'iiia Proc. Auier. Phil. Soc. Phila. 1874, HW: (Ula tu-niu Cope, Zool. Wherlci's Kxpl. W. 100th Mcr. v, 658.) 373. s. moataaus (Cope) J. & G. I'.ody rather slender. Muzzle decurved, obtuse, but less so than in 8. tiniiti. Jaws equal; end of maxillary extending beyond margin of orbit. I've large, 3.\ in head, equal to interorbital space. Anal fin elongate. Lateral line decurved. Olive above; a dark lateral band; sides crimson in males. Head 4; depth 4. D. 9; A. 12; scales 12-5G-G. L. 3i inches. Idaho to Arizona; abundant in the Utah Basin, with the preceding. nioHlniiuH Cope, Ilaydcn's Gcol. Surv. Mont. 1^71, 471), and Proc. Acad- Nat. Sci. I'hila. 1-71, ]:!(!: Gila montaini Cope, ZoJil. Wlu-oler's Expl. W. 100th Mer. v, 657.) 371. S. Buiaihuldli (Grd. ) .1. & G. Body short and deep. Head moderate. Mouth terminal, oblique, the elett rather short, the maxillary reaching front of eye. Eye large, 4 in head. Lateral line little decurved. Dorsal fin rather behind ven- trals. Anal iin rather elongate. Color bluish; sides with two dusky lateral hands. Scales large. Head 4; depth 3. D. 8; A. 12; scales li'-r>i;-S; treth 2, 4-5, 1. Ilumboldt Kiver, Nevada. (T.tiotntt linmhulilli (ird. I'K..'. A<-ad. Nat. Sci. 1'liila. lK',(i, -JOC., and 1'. S. Pac. It. R. Burv. \. -J' aa. Ani'l l.a-i-- ,-liurt, its ia\> .--'.I. /». Si-ales in lateral line 375. S. i i noi ens .1. A.-. G. IJody moderately elongate, symmetrical, not strongly compressed. Head broad, rounded above, maxillary reaching front of eye. Eye rat her large, 4^ in head. Lateral line running low. Dorsal a little behind ventrals, scarcely nearer base of caudal than snout. Caudal 31. CYPRINID^E SQUALIUS. 235 evenly forked. Pectorals short, not reaching nearly to veutrals; ven- trals to vent. Dusky bluish; sides dark; a red spot at bases of ven- trals and anal. Head 4; depth 4. D. 9; A. 8; scales 11-56-6; teeth 2, 5-4, 2. L. 6 inches. Utah Lake. (Jordau & Gilbert, Proc. IT. S. Nat. Mus. 1880, 4(51.) 376. S. ardcsiacus (Cope) J. &, G. Body rather stout, compressed. Head heavy, muzzle short. Mouth short, very oblique, the jaws about equal, the maxillary reaching past the front of the large eye. Eye 4 in head. Pectoral fin long, nearly reaching anal. Olivaceous above; a narrow dark lateral band, follow- ing the direction of the back. Anal fin short. Head 3i; depth 4£. D. 8; A. 8; scales 17-63-8 ; teeth 2, 5-4, 2. L. 4 inches. Exact locality unknown; probably Nevada. (Gila ardesiaca Cope, Zool. Wheeler's Expl. W. 100th Mer. v, G60.) 37"7. S. pandora, (Cope) J. & G. — Chub ofthellio Grande; Pescadito. Body fusiform. Head small, broad and rather flat at the muzzle. Jaws equal, maxillary not reaching line of orbit. Eye small, 6^ ill head. Dorsal fin posterior. Silvery, darker above. A broad, ill -defined lateral baud. Physiognomy of Ceratichthys rather than of JSqualius. Head 4; depth 41 D. 8; A. 8; scales 17-01-0 (17-59-10 to 18-65-11); teeth normally 2, 5-4, 2, sometimes 2, 4-4, 2, or even 1, 4-4, 1, in abnormal or immature specimens; the second tooth sometimes with a small grinding surface. L. 8 inches. Eio Grande region. "The most abundant fish in New Mexico," and quite variable in characters usually very constant among these fishes. (Clinostomus pandora Cope, Hayden's Geol. Surv. Moiit. 1871, 475.) 378. S. margaritus (Cope) J. & G. Body stout and thick, little compressed, the back somewhat elevated. Caudal peduncle thick. Head blunt, thick and rounded. Mouth small, terminal, oblique, the upper lip below the orbit, the maxillary not reach- ing the line of the orbit. Eye rather large. Scales rather small. Lat- eral line decurved. Fins rather large. Dorsal fin posterior. Colora- tion above dusky olive; sides plumbeous silvery; belly white, crimson in spring males; snout dusky; fins plain; scales punctate. Head 4; depth 4. D. 8; A. 8; scales 11-58-8; teeth 2, 5-4, 2. L. 3 inches. Susquehauna Eiver. A handsome fish, quite unlike any other American species, resembling most Phoxinus neogcvus. (Clinostomus maryarita Cope, Cypr. Penii. 1866, 377: Leuciscus maryarita GUnther, vii, 246.) COXTRinrTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. s. vuiu (Cop,-) .1. A. <;. Body rather robust, heavy anteriorly. Head large, with wide front and broad, oblique mouth; maxillary reaching front of eye. Eye 5 in head, L( in iuterorbital width. Dorsal fin posterior. Color dusky above; belly silvery; axils of fins crimson in males. Head 3J; depth 4'r;. D. s: A. s: scales 16-GO-ll ; teeth 2,5-4,1'. L. 7 inches. New .Mexico. (Cope.) ((iila .) 381. S. «-ijr<-i,'ius (Grcl.) J. & G. 15ody rather elongate, subfusitbmi. Head moderate. Snout thick- ish, sulx-onical. Mouth oblique, the jaws equal, the maxillary reaching front of orbit. Kye moderate, 4A in head. Lateral line not much de- curved. Color bluish black; sides with two irregular bands of dark spots : the interspace red in males. Head -I : depth 1. D. 8; A. 9; Lat. 1. <>.">. (Ireat IJasin ; exact locality unknown. (Ti'jonid i!ii piin-Jis (Grd.) Jor. Stout and compressed. Head long. Lateral line decurved. Dorsal Jin slightly behind ventrals. Fins all small. Blackish above, pale be- h)w. Head ;J:\ ; ; teeth 2, 5-4, 2. Itio Mimbres, a tributary of Lake Guzman, in Mexico. (Tltjoma pulcMla Bainl A: Girard, Proc. Acad. Nat, Sci. Phihi. 1854, 29: Tif l>nlch<'ll,(. Grd. I'. S. Mex. Bound. Surv. Iclitb. 62.) >. S. iaiffoi-MK'dius (Grd.) J. & G. "Intermediate between 8. jnilchellux and 8. purpureu&j much nearer the former than the latter." Similar to the preceding. The caudal pe- duncle slender. Dorsal tin somewhat behind ventrals. Fins small. Coloration silvery, with dark dots. Head 3£; depth 4. D. 8; A. i) ; scales ir>-73-9. RioGila. (Tiressed, the dorsal and ventral outlines similar. Head short, rather stout, its breadth y; its length. Snout rounded, jaws equal, the maxillaries reaching front of eye. Eye 4 in head. IVctoral lin as long as head, not reaching ventrals. Dark ])luinbeoiis above, with a median steel-blue lateral band; belly pinkish; cheeks silvery. Head t.'» ; depth -l.\. D.8; A. S; scales minute, 18-80- !.">. Ctiili Lake. (Jony, Proc. I . S. Nat. Mus. I--1, x.) :$*)!. S. «-<>|>«'i .Inidan iV (iilhcit. liod\ romparatively elongate and «-ompressed, the caudal peduncle long and rather slender. Head short, rather broad and tlattish above, the interorbital space convex and broader than the eye. Kye moderate, aa long as snout, .".A-l- in head. Mouth rather small, low, terminal, ob- 31. CYPRINID.E SQUALIUS. 239 lique, the premaxillary just below the level of the pupil, the maxillary reaching to just below the level of the eye. Dorsal fin inserted some- what behind veutrals. Pectorals short, not reaching nearly to ventrals, the latter not to the vent. Scales very small. Lateral line somewhat decurved. Bluish olive above, with dark points ; a dusky lateral shade ; tins nearly plain ; axils red in the males. Head 4| ; depth 3f . D. 8 ; A. 8 ; scales about 19-80-12 ; teeth 2, 5-4, 2, typically without grinding surface, but subject to an unusual amount of irregularity, occasionally 2, 4-4, 1 or 2, and sometimes with grinding surface. L. G inches. Kio Grande and basin of Utah ; very abundant. Described from specimens from Bear Elver, Wyoming. ( Gila egregia Cope, Zool. Wheeler's Expi. W. lOOtli Men-, v, 662 (not Tigoma vgregia Girard, as Girard's original specimens have Lat. 1. 65) ; Jor. & Gilb. Proc. U. S. Nat. Mus. 1880, 461.) 392. S. iiig-er (Cope) J. & G. Body robust, the back elevated anteriorly, the caudal peduncle short- ish and not very stout. Occiput depressed. Head large. Eye rather large, 5 in head. Mouth large, moderately oblique, the lower jaw in- cluded, the maxillary extending to the pupil. Fins small, the dorsal well backward. Scales small, posteriorly smaller and more crowded. Lateral line little decurved. Color dusky, the scales with black dots. Head 3|j depth 3f. D. S; A. 8; Lat, 1. 80; teeth 2, 4-5, 2, said by Girard to have a developed grinding surface, which, however, we are unable to find. Eio Gila. A well-marked species, approaching the genus Gila. (Gila f/ibbosa B. & G. Proc. Acad. Nat. Sci. Phila. 1854, 28: Tigoma f/ibbosa Girard, Proc. Acad. Nat. Sci. Phila. 1856, 207, and U. S. Mex. Bound. Surv. Ichth. 64 : f Gila nigra Cope, Zool. Wheeler's Expl. W. 100th Mer. v, 633. The name gibbosa is, unfor- tunately, preoccupied.) 393. S. conspersus (Garni.) J. & G. Form of 8. niger. Profile of head concave, maxillary reaching front of orbit. Pectorals extending three- fourths distance to ventrals, which reach vent. Brown above; scales of back and sides speckled with darker; an obscure dusky lateral shade. Head 3f ; depth 3f. D. 8; A. 8; "teeth 4, 1-1, 4, clawed"; scales 13-69-9. Nazas River. (Garman.) (Gila conspersa Garmaii, Bull. Mus. Comp. Zool. viii, 1881, 91.) ft Caudal peduncle very deep and compressed, its depth nearly equal to the depth of the head ; dorsal over ventrals; scales rather large. (Siboma Girard.) 394. S. gibbosus (Grd.) J. & G.— Mullet; Chub. Body short, deep, compressed, the antedorsal region arched, the '•audal peduncle nearly as deep as long, about as deep as the head. 240 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. Head conic, the profile steep, the muzzle short and rather pointed. Mouth small, oblique, the jaws nearly equal, the upper lip on the level of the lower part of the pupil, the maxillary scarcely Teaching to front of eye; isthmus very narrow; preorbital nearly as deep as long. Eye small, anterior, 5 in head. Fins low. Dorsal fin opposite ventrals, nearer caudal than snout; caudal tin short, little forked, scarcely broader than the very deep caudal peduncle, the spines of the caudal vertebra' very strong. Scales large, rather closely imbricated, their exposed sur- faces rather deeper than long; 2G scales before dorsal. Lateral line decurved. Color brownish; sides white; young spotted above; scales everywhere with dark dots; fins plain. Head 4 J; depth 3. D. 8; A..S; scales 9-5G-7 ; teeth 2, 5-4, 2. L. 12 inches. Elvers of California : very abundant. One of the most peculiar of our Cyprinidir, but hardly const i- tuting A distinct genus. (Lavinia cr.]. 1). 0; A. 8; scales 10-5")-."); teeth 2, .">-!, 2, short and stout, one of them with grinding surface. L. 12 inches. I Tt ah Lake. Oueof the largest and best marked species. (Jordan & Gilbert, Pro.-, t:. S. Nat. Mus. 1880, A variable character in this grmip. 31. CYPRINID.E — SQUALIUS. 241 396. S. squamatus (Gill) J. & G. Body very robust, subovate, compressed. Head large and long, couical. Moutli ratlier large, oblique, terminal, the maxillary reaching front of orbit, the upper lip on the level of the lower part of the eye. Eye moderate, anterior, 5f in head. Dorsal fin small, inserted poste- riorly, but directly over the veutrals. Scales moderate, suborbicular, widely exposed. Color dark or blackish; "the scales all margined with black; fins dusky. Head 3£; depths. D. 8; A. 8; scales 10-53-6; teeth 2, 5-4, 2. L. 8 inches. Salt Lake Basin. (Tigoma squamata Gill, Proc. Bost. Soc. Nat. Hist. 1861, and Ichth. Capt. Simpson's Ex pi. 1876, 405.) • 397. S. atrarillS (Grd.) Jor. & Gilb.— Utah Mullet; Chub of Utah Lake. Body rather stout, the caudal peduncle not slender. Head moderate, subcouical. Mouth anterior, quite small, the maxillary not reaching to the eye. Eye small, 5£ in head. Fins quite small. Dorsal fin nearly or quite over the ventrals. Scales large, not much imbricated, 25 be- fore dorsal. Lateral line decurved. Olivaceous, blackish above, the color formed of small black points. Head 4; depths*-. D. 9; A. 8; scales 11-57-6; teeth 2, 5-4, 2, usually with evident grinding surface, although placed by Girard and Cope in Siboma, which wants such sur- face. L. 20 inches. Utah Basin. Very common in Utah Lake. A large species, used as food, and very destructive to young trout. (Siboma atraria Grd. Proc. Acad. Nat. Sci. Phila. 1856, 208, and U. S. Pac. R. K. Surv. x, '297: Siboma atraria and var. Ion-gimps Cope, ZooL Wheeler's Expl. W. 100th Mer. v, 667.) 39§. S. crassus (Grd.) Jor. & Gilb. Body robust. Head rather small, the snout short and depressed. Mouth moderate, oblique, the maxillary not reaching to the eye. Eye small, 6 in head. Dorsal fin inserted slightly behind veutrals. Scales moderate, broadly exposed. Dusky above, sides and below paler. Head 4; depth 3%. D. 8; A. 8; scales 10-57-7; teeth 2, 5-4, 2, with narrow grinding surface. L. 10 inches. Sacramento River, California. (Tigoma crassa Grd. Proc. Acad. Nat, Sci. Phila. 1856, 207, and U. S. Pac. R. R. Surv. x, 293.) cc. Slender species, the depth 4-4^ in length; lateral line 60-70. (Cheonda*,GTd.) 399. S. coeruHcus (Grd.) Jor. & Gill). Body slender, subfusiform. Head slender, the snout long, conical, * Ch-conda Girard, Proc, Acad. Nat. Sci. Phila. 1856, 207: type Cheonda cooperi Grd. ( A coined name.) Bull. Nat. Mas. No. 16 16 242 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. rather Mattened above. Jaws equal, the maxillary reaching to orbit. Dorsal tin inserted behind ventrals. Anal fin quite small. Scales rather small. Dusky bluish above, pale below ; scales everywhere with fine punctulations. Head 3^; depth 4 J. D. 9; A. 7; scales 13-01-7; teeth 2, .")-,"), L', with narrow grinding surface. Lost liiver, Oregon. (Clieonda cornlm <;rd. Proc. Acad. Nat. Sci. Phila. ls">t>, 207, and V. S. Pac. R. R. Surv. Fish. 295.) 4OO. S. cooperi (Grd.) Jor. & Gilb. Body elongate, subfusiform. Head moderate, the snout thickish, snbconical, slightly projecting. Mouth oblique, the maxillary not quite reaching to the eye. Eye large, 4£ in head. Fins large, the anal no- tably so. Dorsal somewhat behind ventrals. Coloration plain, rather pale. Head 4^; depth 4.^. D. 8; A. 10; Lat. 1. 03. Columbia liiver. (Cheonda cooperi Grd. Proc. Acad. Nat. Sci. Phila. 185G, 207, and U. 8. Pac. R. R. Surv. Fish. 294: Leuciscus cooperi Giinther, vii, 243.) •1O1. S. iiigrcscens (Grd.) Jor. & Gilb. Body rather elongate, subfusiform. Head long and rather pointed. Caudal peduncle long. Mouth terminal, oblique, the maxillary scarcely reaching to eye. Snout prickly in male specimens. Fins moderate, the dorsal slightly behind ventrals. Color very dark, the sides with black spots, the scales with fine punctulations. Head 3i; depth 4. D. 8; A. 7; scales 16-70-10; teeth 2, 4 (-5, 2 ?). Boca Grande and Janos liiver. (Tiij'inui iiitircxtviiH (ird. Proc. Acad. Nat. Sci. Phila. 1856,207, and 1". S. Mcx. Bound. Surv. Ichth. 04.) 1O2. S. iiioclcstUS (Garni.) J. & G. Brownish, paler below; flanks not lustrous as in S. niyrcuccna. Form moderately stout, the outlines regular. Dorsal behind ventrals, its free border convex. Anal truncate. Distinguished from »V. nir/rescens by tin- greater length and the shape of the head, and a. difference in the position of the dorsal. Head .'U ; dept h ;i:|. D. 8 ; A. 8; scales 14-G5-9. Saltillo, Coalmila. (t'heondn mvd. romp. /mil. viii, 92, iwl.) 1O3.— PHOXINUN Agassi;;. « Minnows. (Agassi/, Mriu. Soc. N;it. Hist. Ncut'chfiid, i. :',7. 1~:!7: t ypo Ci/prhius phoxinux L. = J'liosiiniH In rix .\».; I lie ruimiimi •• M iniiuw " nf I-luropc.) Body stout. -Month normal, without barbel. Teeth _:, .">-."», 2, or 2, .1-4, 2, hooked, without grinding surface. Scales usually small, little 31. CYPRINID^E PHOXINUS. 243 imbricated. Lateral line incomplete or wanting. Dorsal flu behind vcutrals. Anal basis short. Species of small size and brilliant colora- tion ; found both in Europe and America, (^o^rvo?, a minnow; from ?«£«.re lost. Color brownish olive abore, below silvery; a black band, not well defined on •the borders, extends from the end of the muzzle to the base of the cau- dal I'm, where it terminates in a black spot; a reddish spot at the base of the anterior dorsal rays; muzzle dark." (Cope.} L. 2i inches. Upper Missouri River. " This species differs from P. neoyivus in its slender form and the small number of rows of scales." (Cope, Amor. Nat. July, 1879, 440.) "** Scales large, 35-40 in the lateral line. IO6. P. pJiIegetliontis (Cope) Jor. & Gilb. Ilody short and deep. Mouth very oblique, the jaws even, the maxil- lary reaching front of the eye, which is rather large. Dorsal behind ven- trals. Lateral line entirely wanting (in the typical examples; probably more or less developed in the adult, perhaps complete, in which case tin- species is a Tdcstes}. Olivaceous; abroad plumbeous lateral band; a dusky dorsal line; belly golden. Head 4; depth 3i. D. 7; A. S; scales 1 1-,'iT; teeth 1, 5-4, 2. L. 1£ inches. Beaver River, I'tah. (Cope.} ]>lilr!/<-tln>ntix Copi-. Proc. AIIHT. 1'liil. Sue. Phila. 1H74, 137: (lila, , /<".]. Wheeler's Kxpl. \V. 100th Mer. v, (i~i7.) 101.— IJEUCUS Ilcck.'l. Roaches. -UH ( 'ufic: '? .llt/niisra Oiranl: not Li-urn* Kaiip. 1^J4, a nominal gcnita of f.ariiln, ih<- \\unl I.ein-ux liein^ ;i niLsprinl I'ur Hrckr], l»'ns>r^j.',.|-s' Rrixcn, i, 103^, 1^43: tyi"- Leuoos oisaJpinus Ilerkel.) Ilody stout, compressed. Mouth normal, oblique: no barbel. Teeth 4_.->* ,,r .-)-5, hooked, with narrow grinding siii-l'ace. tlie lower usually on Teeth 4-4 in tin- i\]» «l' J.CIU-UM tinn lla. 31. CYPRINID.E - LEUCUS. 245 / a prominent raised prominence of the bone. Scales moderate. Lateral line continuous, decurVed. Anal basis short. Abdomen not compressed. Intestinal canal not elongate. Species numerous in Europe, Asia, and America. This genus is very closely allied to the European Leuciscus Cuvier, differing in the presence of teeth 5-5 or 5-4, instead of G-5 or C-0. The name finally to be adopted for this group, if admitted as dis- tinct, is uncertain, (l-uxoz, white.) a. Teeth 4-4,* with entire edges. (Algansea Girard.t) 407. L. tincella (Val.) J. & G. Body stoutish. Head heavy. Mouth moderate, oblique, the maxil- lary not reaching to the eye. Jaws about equal. Eye rather small. Caudal peduncle thick. Fins small, the caudal short. Dorsal just over ventrals. Scales quite small, firmly attached and not closely imbricated, as in MylochiluSj etc. Coloration dark, plain; fins unspotted. Head3f; depth 3f j scales 17-70-9; teeth 4-4. L. 6 inches. City of Mexico. (Leuciscus tincella, C. it V. xvii, 323; Giiuther, vii, 244.) aa. Teeth 4-5, with entire edges. (Myloleucus Cope.t) 408. L. obesus (Grd.) Jor. Body stout. Head short, the muzzle not decurved. Mouth small, oblique, terminal, the lower jaw somewhat projecting, maxillary nearly reaching to orbit. Eye 4| in head ; preorbital deeper than long. Color dark ; the belly silvery ; the scales everywhere dusted with black specks ; a dusky lateral baud. Head 3|; depth 3£. D. 9; A. 8; scales 12-58-7 (13-58-9, Cope) ; teeth 5-4. L. 0 inches. Utah Basin; abundant. (Algansea olesa Girard, Proc. Acad. Nat. Sci. Phila. 1856, 183, and U. S. Pac. R. R. Surv. Fish. 239: Leuciscus obesus Giinther, vii, 244: Mylolcuctis pulverulentns Cope, Hayden's Geol. Surv. Mont. 1871, 475, 1872; Jordan & Henshaw, Rept. Chief Eng. 1878, App. NN. 192.) 409. L,. formosus (Grd.) Jor. Very close to the next, and perhaps identical with it. Body a little more slender, the scales smaller, and profusely dotted with black as in L. obesus. Head 3f ; depth 4. D. 8; A. 8; scales 10-53-6; teeth 5-4. L. 4 inches. California. (Algansea formosa Girard, Proc. Acad. Nat. Sci. Phila. 1856, 183: Leuciscus formosus Giinther, vii, 245; Jordan & Henshaw, 1. c. 193.) * In specimens examined ; the normal numher is probably 5-4. If permanently 4-4, Algansea may be regarded as a distinct genus. t Girard, Proc. Acad. Nat. Sci. Phila. 1856, 184 : type Leuciscus tincella Val. (A coined name.) tCope, Hayden's Geol. Surv. Mont. 1871, 475, 1872: type Myloleucus pulverulentus Cope = Algansea olesa Girard. (yUvAoS, grinder; /letwd?, Leucus.) 246 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 410. L. hicolor ((Jnl.) Jor. Body moderately stout. Head rather heavy, the muzzle very short and conical. Mouth moderate, very oblique, the jaws equal, the max- illan reaching line of eye. Scales rather large. Lateral line deeurved. Kye rather large, 4.J in head. Color transparent, olivaceous; a distinct plumbeous lateral baud. Fins dusky-shaded. Scales with some brown dots, but not profusely dusted with black specks as in the two preceding species. Head 3£; depth 3$. D. 8; A. 7; scales 8-50-5 (11-48-5, Cope); teeth 4—.">. L. 5 inches. Steams of Oregon, Nevada, etc. (Algtinsea blcolor (I Irani, Proc. Aead. Nat. Sci. Pirila. 1856, 18:5: Leucwcu* bicolor (iiiuthor, vii, 245: Myloleacus paroi'anus Cope, Zoul. \Vheeler's Expl. W. 100th Mer. v, r»Ul»: .Ionian & H-!. L. .'^inches. Cnernavaea, Mexico. (Uiinthcr.) 1 1 nrim-HH Ixniiitrili (iiiiifher, vii, 4H">.) (Hay, I'r.-n-. I . S. Na'.. Mils. 1 — n. .",11?: tspr Op80pOSOdU8 emillCB Hay.) IMH-III of IIi/ltotjiHilliitx. Mouth very small, almost veilical, its position ' entirely anterior, with scarcely any lateral cleft. Teeth 5-5, with grind- ing surface and serrated edges. Abdomen not compressed. Dorsal 31 CYPRINID^E - TRYCHERODON 247 nearly over veutrals. Anal basis short. Lateral line complete. Intes- tinal canal short. Peritoneum white. Small, (oipuxoilto, to feed daintily; s, tOOth.) 413. O. emiliw Hay. Body rather elongate, moderately compressed, not elevated. Head short, slender. Muzzle blunt and rounded. Mouth very small and very oblique, smaller than in any other of our CyprinidoB, with scarcely any lateral cleft ; its size, when opened wide, less than that of the eye. Man- dible short and .deep, strongly curved, jaws equal. Eye longer than snout, 3 in head. Dorsal beginning over posterior rays of veutrals, nearer snout than base of caudal. Pectoral very small, not reaching ventrals, the latter to anal. Caudal peduncle long and slender. Anal short and deep. Breast naked; 16 large scales before dorsal. Yellowish; sides silvery; scales above dark-edged; a dark lateral band from snout to caudal, above and below which are series of black dots; anterior rays of dorsal dark; sometimes a black spot on the posterior rays. D. 9; A. 8; scales 5-40-3; teeth 5-5, serrate. Eastern Mississippi. (Hay, Proc. U. S. Nat. Mus. 1880, 507.) 1O6.— TRVCHEROD01V Forbes. (Forbes, MSS. gen. nov. : type TrycJierodon megalops Forbes.) Pharyugeal teeth in one row, 5-5 or 5-0, strongly hooked, deeply creuate, without masticatory surface. Lateral line imperfect. Dorsal over ventrals. Intestine shorter than head and body. Peritoneum pale. Thorax naked almost to ventrals. Mouth terminal, upper jaw protrac- tile. No barbels. ( -poy^p a ?, ragged; 6Siuv, tooth.) 414. T. mcgalops Forbes, spec. nov. "A small, fusiform species, with a small, terminal, oblique mouth, a very large eye, an imperfect lateral line, a narrow black lateral stripe, a partly naked breast, and large fins. The dorsal has a large dusky black blotch on the front rays. The depth is contained from 4 to 5 times in the length without caudal ; the head 4£ to 5 times. The eye is longer than the snout, and goes but 2f times in the head. Its verti- cal diameter equals the interorbital space. The mandible scarcely reaches a vertical from the anterior border of the nostril, and falls far short of the orbit. The lateral line is variously imperfect ; sometimes present only on the first 4 or 5 scales, and sometimes extending, with numerous interruptions, to the middle of the caudal peduncle. It 248 COXTRIBITTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. is slightly decnrved when present on tin- anterior half of the body. The f.uidal tin is Ion g and very deeply furcate. It is contained .'5^-4 times in head and body, and the median rays are about two-fifths the length of the longest. The dorsal is high, its longest ray reaching nearly o;- (jiiiie half the distance from front of dorsal to tail. The front of the tin is a little nearer nose than caudal. The pectorals extend about threc- fonrths i he distance to the veutrals, and the latter nearly or quite attain t he vent. 1). I, 7 or 8 ; A. I, 7 or 8; scales 5, 38-40, 4; with 15 or 1C rows before dorsal. The pharyngeal bones are thin, and suddenly and broadly dilated at outer third, this part of the bone being nearly -'! times as wide as the inner, and in shape not unlike a horse's jaw-bone. The odontoid process is unusually distinct and high. The teeth are very slender, strongly hooked, and sharply and irregularly eremite, the edge's having a spinose appearance. The scales are crowded, higher than long, a 'id wanting on the anterior half or two-thirds of the breast. Color in ah-ohol yellowish brown, with a faint silvery lustre on sides. A narrow, black band, about one scale wide, extends around the nose, through the upper half of the eye, to the tail, terminating therein the most highly col- or;'d specimens in a narrow vertical bar. The scales above the lateral band are all dark-edged. In all the specimens the dorsal shows a large snbmedian blotch in Iront, crossing about 4 rays. In one this blotch is so enlarged as to include the whole anterior halt' of the fin, except a small space at base, and a second blotch extends similarly across the 3 posterior rays, leaving only a narrow pale vertical stripe between. Length o!' largest specimen L'_! inches. Several specimens from the Illinois Iliver at 1'ekinand IVoria, and from Mackinaw (.'reek." (I'\»-bcx.) 107.- NOT KM Hii ON US K;i!inrs.,m-. i .s7/7/«- ( K:iliin'si|ur. .Iniirn. •])• \'iti-iiii-/i>ini:< iiin;:!ii.. K'ni'. Cjfprinus chrysoleitous Mitch.) l'.od\ Mibelliptical. strongly compressed, both back and belly curved, the ciii-ves dilfei'cnt : baclv narrowl\ compressj-d : belly behind ventral iins forming a keel, over \vhich the scales do not pass. Tail not keeled. Head small, conic. .Month small, terminal, oblique, normal, without barbels. Scales rather large. Lateral line continuous, strongly de curved. Dorsal tin inserted behind the \en1rals. Anal lin with its base somewhat elongate, of fr ..... '.» to IS rays. Teeth 5-5, hooked, with 31. CYPRINID.E — NOTEMIGONUS. 249 grinding surface, the edges of which are more or less creuate. Alimen- tary canal short, though rather longer' than the body. Size rather large. As here understood, Notemigonus differs from the European Abramis (Bream) only in the much shorter anal fin — from 9 to 20 rays in- stead of 30 to 40. All its species are American. There is much varia- tion in the length of the anal and in the form of the mouth among the species left in Abramis, and a reunion or a different division of the group may be uecessar3T. (vw7«c, back 5 y^t, half; Y^VO^J- angle; the back being almost cariuated.) * Insertion of dorsal midway of body or nearer snout than base of caudal. tAnal rays 9 or 10. 415. BT. gardoaaeus (C. & V.) Jor. Body moderately elongate, compressed. Head obtuse. Isthmus small. Mouth small, oblique, the lower jaw included. Eye 4 in head. Dorsal nearly midway of body, little behind veutrals. Olivaceous. Head 5£; depth 3f. D. 10; A. 9; teeth 5-5, with grinding surface and serrated edge. Scales 7-39-3. South Carolina. One specimen known. (Lenciscus gardoneus Cuv. & Val. xvii, 316: Chondrostoma gardoneum Cope, Trans. Amer. Phil. Soc. Phila. 1866, 395: Leuciscus gardoneus Giinther, vii, 258.) 416. W. lucidns (Grd.) Jor. Body rather elongate, subfusiform. Head moderate. Snout subcon- ical, tapering. Mouth somewhat oblique, larger than in the other spe- cies, the maxillary reaching eye. Eye large, 3 £ in head. Dorsal nearer tip of snout than caudal. Scales rather large, much deeper than long. Grayish above, yellowish beneath. Head 4^. D. S; A. 10. Canadian River. (Girard.) (Luxilus lucidus Grd. Proc. Acad. Nat. Sci. Phila. 1856,203, and U. S. Pac. R. R. Surv. x, 282.) tt Anal rays about 13. 417. IV. leptosomus (Grd.) Jor. Body rather elongate, slender, the back elevated. Head small and short, its profile continuous with that of the back- Mouth small, quite oblique, the maxillary not reaching the front of the large eye. Eye 3£ in head. Insertion of dorsal fin about midway between snout and base of caudal. Anal fin high and long. Bluish, silvery below. Head 5; depth 3f. D. 9; A. 13; Lat. 1. 55. Texas. (Girard.) (Luxilus leptosomus Grd. Proc. Acad. Nat. Sci. Phila. 1856, 203, and U. S. Mex. Bound. Surv. Ichth. 60: Abramis? leptosomus Giiuther, vii, 306.) ** Insertion of dorsal nearer base of caudal than snout, a. Anal ravs about 11. 250 rONTKIIU'TIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 118. N. occideiitalis (Baird A- Girard) Jordau. .Body moderately elongate. Snout subconieal, rather tapering. Mouth oblique, the maxillary not reaching orbit. Eye large, 4 in head. Brownish above; sides silvery; the belly speckled with gray. D. 10; A. 11. Tulare Valley, California, (Girard) (Lfiicimiiiiuis nrridi'iilnlix Bui r»l & Girard, 1'roc. Acad. Xat. Sci. 1'liila. 1854, 137 : Lux- HHX tK-r'uh-iitnlix ««. Anal rays about 13 (12-14). IIJ). IV. clirysoloiicus (Mitch.) .Tor.— Golden Shiner; Bream. Uody moderately elongate, strongly compressed. Head short, sub- cm lie, compressed, the profile somewhat concave. Month small, ob- lique, the upper lip on the level of the upper part of the pupil, the max- illary not reaching the front of the eye. Eye moderate, about 4 in head. Fins medium. Color clear greenish above; sides silvery, with bright golden reflections; tins yellowish; the tips of the lower tins sometimes orange in spring males. Head 44; depth 3. D. 8; A. 13; scales 10- 51-3; teeth 5-5. L. 12 inches. New England to Dakota and Texas; everywhere abundant in bayous and weedy ponds. One of the most familiar and characteristic of our Cyprin'uhv. (CilliriniiH fhrijxolfitciiH Mitch. Kept. Fish. X. V. 1 .-'!.">, 23: Abramis rernicolor DeKay, N. Y. Fauna. Fish. 1D1 : Liwottomux (umricnuus Stover, Fish. Mass. '283: Stillieaniericana ('HIM-, Cypr. 1'ciin. LSoO, 3.W9 : Lfiifinciin. Leucosomua, LusUim, I'lnri/i/ru.*, Slilbc. ^lilliiittt, or Almimix aincriruititH of various authors (not Cyprian* americanus L.): Luxiluit xc<-o (Jiraid, I'roc. Acad. Xat. Sci. Phila. IH.'iti, -203 : Abramin americanus GUuthcr, vii, 305; Jordan, Bull. U. S. Nat. Mus. x, G5.) a. Anal rays about 10 (15-18). •12O. N. amcriraiiiis (L.) Jor. — Southern lircam. I>ody moderately ele\ated, very strongly compressed. Head rathei broad and Hat between the eyes. Mouth small, quite oblique, the max illary barely reaching t lie eye. Eye very large and prominent, anterior, about ."» in head. 1 )orsal tin short and very high, almost falcate, well back. Anal tin high a*id long. Scales rather large, the lateral lint running very low. Color pale olive, with silvery lustre; lower tins red in the males in spiing. Head I.1,: depth 3.\. 1 >. S ; A. 1(1; scales S-43- _' : teeth 5-5. L. 1 L' inches. K'ivers of the Soul h At hint ie States ; locally abundant. HUH rimniiH Linn. S\.-i. Nat.: /.ruc'turux lioxci Cuv. iV Val. xvii. 31:5: Xote- isi-lntniix .Jordan. Ann. Lyi'. Xat. Hist. N. Y. 187(1, I'.dl: .Jordan. Hull. U.S. Nat. Mils. \. (;.">.) 31. CYPRINID^; LEPIDOMEDA. 251 1O8.— RBCHARDSONIUS Girard. (Girard, Proc. Acad. Nat. Sci. Phila. 1856, 201: type Cyprinus lalteatua Rich.) Body oblong1 or elevated, strongly compressed. Head rather small. Mouth terminal, oblique, jaws normal ; no barbels. Teeth 2, 5-5, 2, or 2, 5-4, 2, hooked, without grinding surface, the edges entire. Gill- rakers very small. Belly compressed behind ventral fins, the scales passing over its edge. Back of tail not keeled. Scales rather small. Lateral line continuous, decurved. Dorsal fin well behind the ventrals. Anal basis elongate. American; closely related to the European genus Alburnus. (Dedicated to Sir John Richardson.) 421. R. balteattis (Rich.) Grd. Body strongly compressed and somewhat elevated. Head small, the snout rather short and conical. Mouth terminal, oblique, the lower jaw slightly projecting beyond the upper. Eye large, 3i in head. Colora- tion plain, the sides bright silvery, crimson in males in spring. Anal and caudal large. Dorsal low, much behind ventrals. Base of anal 4£ in length. Head 4.J; depth 3J. D. 10; A. 17 or 18; Vert. 40; Lat. 1. 13-G2-6; teeth 2, 5-4, 2. Columbia River and northward; abundant. (Cyprinus (Abramis) balteatus Richardson, Fauna Bor.-Auier. iii, 1501 : Richardsonius baltcatus Grd. U. S. Pac. R. R. (Surv. x, 278: Abratnis balteatus Giiuthcr, vii, 809.) 422. R. lateralis Grd. Body slenderer and less compressed. Mouth moderate, terminal, ob- lique, jaws equal. Anal basis 5^ in length. Blackish above; a dark lateral band; the interspace and belly pale; crimson in males in sum- mer. Head 4J; depth 3f-4. D. 10; A. 14; scales 13-55-6; teeth 2, 5-5, 2. Columbia River and streams about Puget Sound. (RicJiardsonius lateralis Grd. Proc. Acad. Nat. Sci. Phila. 1856, 202, and U. S. Pac. R. R. Surv. Fish. 279: Abramis lateralis Giinther, vii, 309.) 109.— LEPIDOMEDA Cope. (Cope, Proc. Amer. Phil. >Soc. Phila. 1874, 131: type Lepidomeda vittaia Cope.) Body elongate. Mouth terminal, without barbels. Teeth 2, 4-4, 2, hooked, without grinding surface. Scales small. Lateral line com- plete. Dorsal fin with a strong spine, composed of two, the posterior received into a longitudinal groove of the anterior. Inner border of the ventral fins adherent to the body. Dorsal fin inserted behind the ven- trals. Anal basis short. Size small. (^-fdoc, scaly ; Meda.) 252 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 423. L. vittata Cope. Body rather stout. Head wide and flat above, slightly depressed be- hind the eyes. Muzzle obtuse, not prominent. Mouth terminal, ob- lique. Eye 3^ in head. Scales small, covering the whole body except the .space behind the pectorals; 2G series above the lateral line and 56 in front of the dorsal. Preorbital bone trepezoidal. Second dorsal spine as long as the first, and wider. Dorsal rays somewhat enlarged and ossified. Pectoral rays scarcely enlarged. Color silvery ; a lead- colored lateral baud and a black dorsal band. Head 3f ; depth 4£. D. II, 7 ; A. 9 ; teeth 2, 4-4, 2. L. 3i inches. Colorado Chiquito River, Arizona. ( Cope.} (Cope, Pror. Ainer. Phil. Soc. Phila. 1674, 131, and Zoiil. Wheeler's Expl. W. 100th Mer. v, 64->.) 424. L,. jarrovii Cope. Body* more elongate. Mouth nearly horizontal, lower jaw somewhat projecting. Eye larger than in L. vittata, 3£ in head, the maxillary reaching its anterior border. Spines slender. Scales very small and difficult to detect, 51 series before the dorsal fin. Olivaceous ; a median black vertebral band ; sides silvery ; bases of ventral fins red. Head 4; depth 5. D. II, 7; A. 9; teeth 2, 4-4, 2. L. 3 inches. Colorado Chi- quito Kiver, Arizona. (Cope.) (Cope, Proc. Acad. Nat. Sri. Phila. 1874, 133. and Zool. Wheeler's Expl. W. 100th M.T. v, 643.) 11O.— HIEDA Girarcl. (Girard, Proc. Acad. Nat. Sci. Phila. 1856, 191: type Mi-da fulgiAa Grd.) Body elongate. Mouth terminal, normal, no barbels. Teeth 1,4-4, 1, hooked, without grinding surface. Body entirely scaleless. Fins as in Lci>iov, flu; in allusion to the armature of the dorsal flu.) 426. P. argcntissimus Cope. Body slender. 'Head rather broad, the muzzle slightly depressed, over- hanging the rather small, horizontal mouth. Lips thin, the maxillary reaching front of eye. Eye moderate, 4£ in head. Dorsal tin entirely behind ventrals, the tirst spine curved, longer than the second ; soft rays of the dorsal thickened and ossified at base ; fifth ray of the ven- tral bound to the abdomen by a membrane for nearly its whole length; pectoral rays osseous at base. Lateral line complete, slightly ddSexed. Color clear silvery ; dorsal region dusky, with minute black dots. Head 4; depth 6. D. II, 7; A. 10; teeth 2, 5-4, 2. L. 2£ inches. San Luis Valley, Western Colorado. (Cope.) (Cope, Proc. Amer. Phil. Soc. Phila. 1874, 130, anil Zool. Wheeler's Expl. W. 100th Mer. v, 640.) 112.— CARASSIUS Nilsson. Crucian Carps. (Nilssou, Proclromna: type Cyprlnus carassius L. = Carassius vulgaris Miss.) Body oblong, compressed, and elevated. Mouth terminal, without barbels. Teeth 4-4, molar, but compressed. Scales large. Lateral line continuous. Dorsal fin ATery long, with the third ray a stout spine, which is serrated behind ; anal short, with a similar spine. Ventrals well forward. Large species of the fresh waters of Europe and Asia; often domesticated. (Carassius, a latinization of the vernacular names of the European Crucian Carp, Karasts or Karamche.) 427. C. aiiratus (L.) Bleeker.— (iold-fisli. Body stout, covered with large scales. Dorsal and anal fins with the spines strong, coarsely serrated. Coloration olivaceous, usually orange or variegated in domestication. D. II, 18; A. II, 7; Lat. 1. 26; teeth 4-4. L. 12 inches. China and Japan ; introduced everywhere as an aquarium fish, and now naturalized in many of our eastern streams. The variations are innumerable. (Cjiprinvs auratus Linuse-us, Syst. Nat.j Giinther, vii, 32.) -54: CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 113.— CYPRINUS Linuspiis. Carps. (Artoili ; Linu;rus. Syst. N:ii.: type Cyprinus carpio L.) I'.ody robust, compressed, resembling that of the Buffalo-fish. Mouth moderate, anterior, with four long barbels. Snout blunt, rounded. Teeth molar, broad and truncate, 1, 1, 3-3, 1, 1. Scales large. Lateral line continuous. Dorsal fin very long, with a stout spine, serrated • behind; anal tin short, also with a spine. Large fishes of the fresh waters of Asia ; introduced into Europe and America as food-fishes. . Body stout, more or less compressed, heavy anteriorly. General color olivaceous. 1). Ill, 20; A. Ill, 5; scales 5-38-5; teeth 1, I, 3-3, 1, 1. L. IS inches or more. Fresh waters of Central Asia; introduced as a food-fish into Europe and America. In domestication it has run into many varieties, distinguished by differences in form, squamatiou, and development of the fins. (Liiiiii'-u-s Syst. Nat.; Giinther, vii, 2f>.) FAMILY XXXII.— CHARACINID^E. (The Cltarttcinx.) Body variously formed, covered with cycloid scales. Head naked. Margin of upper jaw formed mesially by the premaxillaries and later- ally by the maxillaries; no barbels; premaxillaries not protractile. Teeth various, often incisor-like, often wanting. I'.ranchiostegals usu- ally •".. (lill-membranes united to the isthmus or not. No pseudo- branchhe. dills I, a slit behind the fourth. Lower pharyngeals not truly falciform, but more or less curved, armed with small, sometimes villiibrm, teeth. Adipose lin usually present (absent in Erythriniiur). Pylorie cu-ca usually numerous. . \ir-bladder transversely divided into two portions, and communicating with the organ of hearing by means of auditory ossicles, as in the Ciipriiiitltr. Anterior vertebra; coalesced and modified. A very large family of (iO genera and 300 species, inhab- iting the fresh waters of South America and Africa, where they take 32. CHARACINID^ TETRAGONOPTERUS. 255 the place of the Salmonidcc and Cyprinidcc of the Northern Hemisphere. A single species reaches the United States. (Charatinida Giiuther, vii, 278-380.) * Adipose fin present. t Dentition complete in both jaws; gill-openings wide, the membranes not at- tached to the isthmus; nasal openings of each side close together; teeth compressed, notched. (Tclragonoptcrince.) t Anal fin elongate (rays 20-50); belly in front of ventrals rounded; premaxillary teeth in a double series; a single series of teeth in lower .jaw, with no conical teeth behind it ; no canine teeth ; gill-rakers setiform .. TETRAGONOPTERUS, 114. 114.— TETRAGONOPTERUS Cnvier. (Astyanax B. & G. ; Poccilurichthys Gill.) (Artedi; Cuvier, Me"m. clu Mus. iv, 455, 1818: type Tctragonopterus argen-teus Cuv.) Body oblong or elevated, compressed, covered with moderate scales. Belly rounded. Cleft of mouth medium. Anterior teeth strong, incisor- like; lateral teeth small. Premaxillary and mandibular teeth subequal / in size, with a compressed, notched crown, the former in a double, the latter in a single, series. Maxillary with few teeth. Nostrils of each side close together, separated by a valve only. Lower pharyngeals very slender, curved, approaching the form in Cyprinidce, armed with a single series of slender, hooked teeth. Gill-openings wide, the membranes free from the isthmus and from each other. Gill-rakers setiform. Dor- sal fin midway of body, above or just behind veutrals. Anal fin long. Species about 40, in all the warmer parts of America. (Ts-pdfwvoz, four-angled ; nspw, fin or wing; of no special application to this group, the original word used by Klein and Artedi being Tetragonoptrus,) a. Body oblong, moderately elevated, the depth less than half length. (Astyanax Baird & Girard.*) 429. T. arg-entatus (Baird & Girard) J. & G. Olivaceous; a broad silvery band along sides; a black spot at base of caudal, running up on the fin. Body oblong, compressed. Snout blunt, lower jaw included. Dorsal inserted above ventrals. Pectorals reach- ing ventrals, the latter to vent. Head 4 in length ; depths. D. 10; A. 21; scales 6-38-6. Arkansas to Mexico; probably abundant; the north- ernmost representative of the family. (Astyanax arycntattts B. & G. Proc. Acad. Nat. Sci. Phila. vii, 27, 1854: Astyanax argtntatus Grd. U. S. Mex. Bound. Surv. Ichth. 74; Giinther, v, 380.) * Baird & Girard, Proc. Acad. Nat. Sci. Phila. vii, 26, 1854 : type Astyanax argentatus B. &. G. (a6n>dvaz, a son of Hector.) 256 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. ORDER M.-ISOSPOXDYLI. (The Isospondylous Fishes.) Parietals present. Symplectic present. No interelavicles. A pravor- acoid arch. Anterior vertebrae simple. X<» auditory ossicles, IMiaryn- geal bones simple above and below, the lower not falciform. Gills 4, a slit behind the fourth. A very large group, presenting many moditiea- tious of structure. (?«TO?, equal ; tfr«;>->.i/... dd. Gular plate present ; month large; teeth all pointed ....... KI.OPID.K, :'<">. cc. Lateral lino obsolete. ;/. Mouth terminal, large; maxillary in three parls. mostly liroad. gg. Mouth small, inferior; maxillary short and narrow; not in three parts ............................... DOKO.-OMA I II>.K, 38. ;/.'/.'/• Mouth very large, snbinferior: maxillary very narrow, jiroduced backward ........................... KVCIIAIM ii>n>.i:. :'.'.'. bb. Adipose lin present (rarely absent, and the body with plio^phnii-M ml spots*. A. Throat with a long barbel; scales very small or wanting ; mouth large ................................... SK.MIA i ID.I:, •!.">. lilt. Throat without barbel. i. Sides with phosphorescent spots; oviduct* present: deep-sea lishes. _/. I'seiidobraiH-hiie none ; body scaly ..... < 'n \ i i n n>< >N i n> i :, II. jj. I'seiidolu-anchiie ])resent ; bodymiked . S i i 'i:\. •!• i \ . n i i.j . |:1. ii. Siiles without phosphorescent spotaj o\ iducts none. SAI.MOMD.; . li'.. aa. Lateral margins ot ii|iper ja\\, like the anterior margin, formed by the pivmax- illaries; adipose lin n.-ually present. /.-. Pivmaxillaries short, with villiform leeth: month small; bone-, o|" head ca\ ernoiis ; s( ales ctenoid . . ]'i RCOPSID^, -17. /.A. I'remaxillaries elongad- : month large; bones of head not cavernous; scales most l\ cxdoid. /. Dorsal short, nearly median: body scaly .. Scon i ID.I:, I'.'. //. Dorsal short, posterior: bcidx scaly . I'AKAI r.ri in i>.i , 41. ///. Dorsal occupying nearly (he whole length of the back; body naked ........................ Ai.rnix'-Ai KID.-E, 40. 33. ALEPOCEPHALID.E - ALEPOCEPHALUS. 257 FAMILY XXXIIL— ALEPOCEPHALIDJE. Body oblong, compressed, covered with tliin cycloid or keeled scales, or with naked, prickly skin. Head naked. Lateral line developed. No barbels. Mouth moderate or large. Margin of the upper jaw formed by the premaxillaries and the maxillaries, the former being placed along the upper anterior edge of the latter. Teeth feeble. Opercular ap- paratus complete, its bones thin. No adipose fin. Dorsal fin long and low, posterior, inserted opposite the anal; pectorals short, placed rather high ; ventrals usually well back, sometimes wanting. Gill-open- ings very wide, the membranes free from the isthmus. Pseudobranchia3 present. No gular plate. No air-bladder. Stomach curved, without blind sac. Pyloric coeca in moderate number. Fishes of the deep seas; but one species known until recently. Lately 3 genera and 7 species have been described from the abyssal faunas of the mid Atlantic and Pacific. (Alepocephalidw Giinther, vii, 477.) a. Scales cycloid ; dorsal and anal subequal, opposite each other; mouth small ; jaws nearly even; small teeth in jaws, vonier, and palatines. ALEPOCEPHALUS, 115. 115.— ALEPOCEPEIALUS Eisso. (Eisso, Mem. Acad. Nat. Sci. Turin, xsv, 270, 1820: type Alepocephalus rostral us Eisso, from the Mediterranean.) Body oblong, compressed. Mouth rather small, the snout somewhat prolonged. Jaws nearly equal in front; a series of small teeth in each jaw and on the vomer and palatines. Eye very large. Gill-membranes entirely separate. Branchiostegals C. Opercular bones thin. Dorsal low and rather long, with a scaly base, opposite and similar to the anal. Pectorals and ventrals rather small. Caudal moderately forked. Scales rather large, thin and cycloid. Deep-sea fishes of the Atlantic and Mediterranean, (a, privative; Af-c'-, scale; xsyaly, head.) 43O. A. bairdii Goode & Bean. Uniform indigo-blue, the color extending to the inside of the mouth and the gill-membranes. Body rather elongate. Head moderately compressed, subconical, the lower jaw included. Maxillary extending nearly to below middle of eye. Eye large, as long as snout. Dorsal slightly in advance of anal. Head 4£ in length ; depth 5£. D. 22 ; A. 25 ; P. 12; V. I, 9 ; pyloric cceca 15; B. 6; scales 7-65-11. L. 24 inches. Grand Banks; dredged at a depth of 200 fathoms. (Goode & Bean.} (Goode & Bean, Proc. U. S. Nat, Mas. ii, 55, 1879.) Bull. Nat. Mus. No. 10 - 17 258 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. FAMILY XXXIV.— ALBULID2E. (The Lady-fishes.) Hody rather elongate, little compressed, covered with rather small, brilliantly silvery scales. Head naked. Snout conic, subquadrangular, shaped like the snout of a pig, and overlapping the small, inferior, hor- i/ontal mouth. Maxillary rather strong, short, with a distinct supple- mental bone, slipping under the membranous edge of the very broad preorbital. 1'remaxillaries short, not protractile. Lateral margin of upper ja\v formed by the maxillaries. Eye large, median in head, with a bony ridge above it, and almost covered by an annular adipose eye- lid. Opercle moderate, firm. Preopercle with a broad, Hat, membra- naceous edge, which extends backward over the base of the opercle. Pseudobranchiae present. Gill-rakers short, tubercle-like. Gill-mem- branes entirely separate, free from isthmus. Branchiostegals about 14. A fold of skin across gill-membranes anteriorly, its posterior free edge crenate. Xo gular plate. Both jaws, vomer, and palatines with bands of villiform teeth. Broad patches of coarse, blunt, paved teeth on the tongue behind and on the sphenoid and pterygoid bones. Lat- eral line present. Belly not earinate, flattish, covered with ordinary scales. Dorsal fin moderate, in front of ventrals, its membranes scaly. No adipose fin. Anal very small. Caudal widely forked. 1'yloric cu-ca numerous. A single species known, found in all warm seas. (Cliijiiidn ^i-t>n]> AUnd'ina ( iiint lu-r, vii. Kis, 4C9.) 116.— ALBULA Gronovins. (Cniiniviiis; r.lorh A. Srlmridrr, Sy^t. Idi'li. 1801, -I'lJ: typf .Hindu ciinorJiyni'luiK I'il-71-7. L. IS inches. Cape < ,'od to Southern California and Mast Indies; abundant in tropical seas. Not much valued as food, but beautiful and gamy. (Esoxvulf I. - st. Nat. : Alluda conorhi/urhiiN (iiintlicr. vii, 468.) 35. HYODONTID^E IIYODON. 259 FAMILY XXXV.— HYODONTIDJE. ( The Moon Eyes ) Body oblong, compressed, covered with moderate-sized, brilliantly silvery, cycloid scales. Head naked, short, the snout blunt. Mouth moderate, oblique, terminal, the jaws about equal. Premaxillaries not protractile. Maxillary small, slender, without evident supplemental bone, articulated to the end of the premaxillary, and forming the lat- eral margin of the upper jaw. Dentition very complete. Premax- illary and dentary bones with small, wide-set, cardiform teeth. Max- illaries with feeble teeth. A row of strong teeth around the margin of the tongue, the anterior canine and very strong ; between these is a band of short, close-set teeth. Vorner with a long, double series of close- set, small teeth. Similar series on the palatines, sphenoid, and ptery- goids. Sides of lower jaw fitting within the upper, so that the denta- ries shut against the palatines. Eye very large, the adipose eyelid not much developed. Preorbitals very narrow. Nostrils large, those of each side close together, separated by a flap. Gill-membranes not con- nected, free from the isthmus, a fold of skin covering their base. No gular plate. Branchiostegals 8-10. Gill-rakers few, short and thick. Pseudobranchise obsolete. Lateral line distinct, straight. Belly not serrated. Dorsal fin rather posterior. Anal elongate, low. Veutrals well developed. Caudal strongly forked. No adipose fin. Stomach horseshoe-shaped, without blind sac; one pyloric ccecuin. Air-bladder large. No oviducts, the eggs falling into the cavity of the abdomen before exclusion. A single genus, with 3 known species, inhabiting the fresh waters of North America. (Hyodontidce Giinther, vii, 375, 376.) i B ?.— HYOI>ON Le Sueur. Moon Eyes. (Hiodon Le Sueur, Jotiru. Acad. Nat. Sci. Pliila. i, 334, 1818: type Hiodon tergism Le Sueur.) Generic characters included above, (uos^'?, hyoid; 33d>v, tooth; "hyoid" is the bone shaped like the letter T, forming the base of the tongue.) * Belly in front of ventrals strongly carinated ; dorsal rays (developed) 9. 432. H. alosoides (Raf.) J. & G. Body closely compressed, becoming deep in the adult. Eye mod- erate, smaller than in other species, about 3£ in head, the maxillary "260 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. reaching to beyond its middle. Caudal peduncle rather stouter than iu //. tcryisux, and the fin not so deeply Corked. Back less arched and snout blunter than in the other species, the mouth larger and more, oblique. Pectorals longer and veutrals shorter than in H. /m/?.vM.v, Belly earinated both before and behind ventrals. Bluish; sides silvery, with golden lustre. Head 4i; depth 3i. D. 9; A. 32; scales G-56-7. Ohio Eiver to the Saskatchewan; common northward. (Ainphiodon alosoidts Raf. Journ. Phys. Paris, 1819, 421: Htjodon chrijHopsia Richard- sun. Fauna Bor.-Amcr. iii, 232, 1836: Htjodon ch rysopsls Jordan, Bull. 1T. S. Nat. Mns. x, 68, 1877: Uyodon amphiodon Raf. Ichth. Oh. 1820, 42.) *Bolly in front of ventrals not earinated; dorsal fin with 11 or 12 developed rays, t Belly behind ventrals earinated. 433. II. tcrgiSHS Le Sueur. — Moon Eye; Toothed Herring. Body oblong, moderately compressed. Eye large, 3 in head, the max- illary barely reaching its middle. Pectoral fins not reaching ventrals, the latter just short of vent. Belly behind veutrals some what cariuate. Color silvery, olive-shaded above. Head 4J; depth 3. D. 12; A. 28; scales 5-55-7. L. 12 inches. Great Lakes and Mississippi Valley;, abundant in our larger streams. One of our handsomest fishes; not valued as food. (Le Sueur, Journ. Acad. Nat. Sci. Phila. i, 364, 1818: Iliodon clodalus Le Suenr, 1. c. :!('>?: Ci/prinus (Abramis?) smithi Rich. Fauna Bor.-Amer. iii, 110; Giinther, vii, 37".; Jordan, Bull. U. S. Nat. Mus. x, 68, 1877.) H I'.i-lly nowhere earinated. 134. II. selcnops Jordan & Bean. Body more elongate, little compressed, not elevated. Belly nowhere cariuate. Eye very large, 2i in head. Pectorals not reaching nearly to veutrals. Clear silvery. Head 4J; depth 4. D. 12; A. 27; Lat. 1. 50. Cumberland 1 liver and southward. (Jordan & lk-un, Bull. II. S. Nat, Mus. x, 68, 1877.) FAMILY XXXVI.— ELOPID^E. (The nig-cycd Herrings.) Body elongate, iiot much compressed, covered with cycloid scales. Head naked. Mouth broad, terminal, the lower jaw prominent. Pie niaxillarie* not protractile, short, the maxillaries forming the lateral margins of the upper jaw. Maxillary composed of about three pieces, extending backward beyond the eye. An elongate bony plate between the branches of the lower jaw (like the gular plate in Amia). Bands 36. ELOPIDJE MEGALOPS. 261 of villiform teeth iu both jaws and on vomer, palatines, pterygoids, tongue, and base of skull. No large teeth. Eye large, with an adipose eyelid. Gill-ineinbraues entirely separate, free from the isthmus. Branchiostegals numerous (20-35). Gill-rakers long and slender. Pseudobranchice present or absent. Belly not keeled nor serrated, covered with ordinary scales. Lateral line present. Dorsal fin over or rather behind ventrals. Caudal fin forked. Xo adipose fin. Pyloric creca numerous. Two genera, not much alike, with 4 or 5 species, widely distributed, sometimes entering fresh waters. (Clupcidce group Elopina Giiuther, vii, 469-472.) *Body elongate, covered with small scales; anal fm smaller than dorsal. (Elopime.} a. Pseudobranchije present ELOPS, 118. ** Body obloiig, covered with large scales ; anal fin larger than dorsal. (Meyalopince.) 1). Pseudobranchise obsolete MEGALOPS, 119. 118.— EL.OPS Linnaeus. Big-eyed Herrings. (Linnaeus, Syst. Nat: type Elops saurus L.) Body elongate, covered with thin, small, silvery scales. Dorsal fin slightly behind ventrals, its last rays short, the fin depressible into a sheath of scales. Anal fin smaller, similarly depressible. Pectorals and ventrals moderate, each with a long accessory scale. Opercular bones thin, with expanded, membranaceous borders; a scaly occipital sheath or collar. Lateral line straight, its tubes simple. Pseudobran- chise present, large. Species 2 or more, widely distributed, reniarka ble for the development of scaly sheaths. (e-W, name of some sea-fish — a sword-fish or sturgeon; from <^dw, to drive or move.) 435. E. saurus L. — Big-eyed Herring. Uniform silvery, darker above. Gular plate 3-4 times as broad as long. Head 4J; depth 5-6. Eye large, 4-5 in head. D. 20; A. 13; V. 15; B. 30; scales 12-120-13. L. 24 inches. Cape Cod to Cape of Good Hope and China. A handsome fish, not rare on our Atlantic coast. (Linn. Syst. Nat. ; Giinther, vii, 470.) 119.— MEGAJLOPS Lacepede. Tarpums. (Comnierson; Lace~pede, Hist. Nat. des Poissons, v, 289, 1803: type Mcgalops filamen- tosus Lac. = Clupea cyprinoides Broussonet. ) Body oblong, compressed. Head large, compressed. Eye very large. Belly narrow, covered with ordinary scales. Mouth large, oblique. 262 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. Maxillary broad, extending beyond the eye. Villiform tooth on jaws, vomcr, palatine's, tongue, sphenoid. and pterygoid bones. Scales large, linn. Lateral line nearly straight, its tubes radiating widely in oaeh of iis scales. Dorsal fiu short aud high, over or behind vcntrals; last ray of dorsal elongate, filamentous, as ill Doroxmnn and Op/xtltonaim. Anal lin long, falcate, its last ray produced, its base much longer than that. of the dorsal. Caudal lin widely forked. Pectorals and vontrals rather long, (lill-rakers long. Aiial liu with a sheath of scales; dorsal lin naked; caudal lin largely scaly; nape with a collar of large scales. Pseudobranchiae none. Species of very large size, largest of the Clupcoid fishes, found in all warm seas. (//.^«;.o^, large-eyed.) * Origin of dorsal behind the v< ntrals. 436. M. tlirissoidcs (Bloch & Schneider) Giiuther. — Tarpum ; Jew-fish. Uniform brilliant silvery, back darker. Body elongate, compressed, little elevated. Head -i in length; depth 3i. D. 12; A. 20; Lat. 1. 42; B. 23. Dorsal filament longer than head. Atlantic Ocean, entering fresh water; common on our southern coasts, and noted for the great size of its scales, which are used in ornamental work. (Clupea tltrissoides Bloch & Schneider, 1801, 4:.;4: Cum her, vii, FAMILY XXXVII— CLUPEID/E. (The Body oblong or elongate, more or less compressed, covered with cycloid or pectinated scales. Head naked, usually compressed. Mouth rather large, terminal, the jaws about equal. Maxillaries forming the lateral margins of the upper jaw, each composed of about three pieces. Pre- maxillaries not protractile,. Teeth mostly feeble or wanting, variously arranged. (lill-rakers long and slender. Gill-membranes not con- nected. free from the isthmus. No gnlar plate, dills 1, a slit behind the fourth. r.ranchiostegals usually rather few ((5-15). Posterior lower part of opcrcular region usually with an angular eiiiargiuation, the tips of the larger branchiostegals being abruptly truncate. Pseudobranchiffi present. No lateral line (at least in our species). Dorsal tin median or somewhat posterior. No adipose lin. Ventrals moderate or small (want - ing in I'rixUfitiNln'). Anal usualh i-ather long. .( 'audal tin forked. IJelly sometimes rounded, sometimes compressed and armed with bony sei'- raturcs. (lenera l."c >pe cii -> l.'ld; inhabit iug all seas, and usually swim- ming in immense- schools. .Many species ascend fresh waters, and some 37. CLUPEID.E - SPRATELLOIDES. 263 remain there permanently. The current genera are ill denned and apparently too numerous, and we have followed Dr. Giinther in refer- ring most of them to Clupea. The rudimentary teeth are extremely variable, even in the same species. groups Clupeina and Diismiiiieruna Giinther, vii, 412-467.) * Belly roimtled, covered with ordinary scales ; supplemental bones of maxillary very narrow. (Dussumieriina'.') a. Veutrals small, behind dorsal ; teeth small, persistent on jaws, vomer, palatines, pterygoids, and tongue .................................. ETRUMEUS, 120. aa. Veutrals below dorsal; teeth wanting or deciduous ....... SPRATELLOIDES, 121. ** Belly compressed, armed with bony serrte ; supplemental bones of maxillary broad. (Clupeince.) I). Scales with their posterior margins entire and rounded. c. Last ray of dorsal not produced. d. Scales thin, deciduous ..................................... CLUPEA, 122. dd. Scales firm, adherent, regularly arranged .............. HARENGULA, 123. cc. Last ray of dorsal produced in a long filament .......... OPISTHONEMA, 124. bb. Scales with their posterior margins vertical, and pectinate or fluted. BREVOORTIA, 125. 120.— ETRUMEUS Bleeker. Round Herrings. (Bloeker, Verh. Bat. Gen. xxv, Japan, 48: type Clupea micropus Schlegel, from Japan.) Body elongate, fusiform, sub cylindrical, snout pointed. Mouth ter- minal, rather wide, the maxillary extending to opposite the eye, its sup- plemental pieces slender; jaws and most of the bones of the mouth with small but permanent teeth. Scales cycloid, entire, very decidu- ous. Branchiostegals fine, about 15 in number. Pyloric coeca numer- ous. Belly rounded, covered with ordinary scales. Fins all small, the anal especially so. Veutrals behind dorsal. Two species known. abdomen; o>.o?, even?) 437. E. teres (DeKay) Giiuther. — Hound Herring. Olivaceous above, silvery on sides and below. Body terete and fusi- form. Head slightly compressed forwards. Mouth small, maxillary reaching front of orbit. Eye large, equal to snout. Fins all very small. Vomeriue teeth present. Head 4 in length; depth 6. D. i:>; A. 10. Atlantic coast of the United States; not common. (Alosa teres DeKay, New York Fauna, Fish. 1842, 262; Gunther, vi, 467.) 191.— §PRAirElE,OII>ES Bleeker. (Bleeker, Verh. Bat. Gen. xxiv, Hariug, 29: type Clupea argyrotwnia Bleeker.) Body elongate, subcyliudrical or slightly compressed, covered with moderate-sized deciduous scales. Abdomen obtuse, without keel or 264 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. serratuiv. Mouth essentially as in Clupea. Teeth none, or minute and deciduous, (i ill-membranes separate, with about 0 ilat branchiostegals. I'sendobranchia' well developed. Dorsal opposite ventrals; anal tin short. Stomach with long, blind sac; pyloric coeca in moderate imm- her. Paeiiictnid Indian Oceans. (^/-«M/w.s, sprat; elo.>?, resemblance.) 138. §. bryoporii** Cope. Form compressed, moderately elongate. Belly rounded, except be- tween ventral tins and vent, where it is angular. Maxillary broad. Hat, reaching to opposite middle of pupil. Veutrals a little in front ol middle of dorsal. Lower fins short. Pectorals 2£ in distance to ven- trals. Golden; bluish above. Top of head with a bifurcate depression, tilled with delicate, branching mucous tubules; opercular and post- frontal regions with similar tubes. Head 5; depth 4£. D. 18; A. 18; • scales 51-12. L. 14 inches. Coast of Alaska. (Cope.} (Cope, Proc. Arner. Phil. Soc. Pkila. 187:3.) 122.— CL.UPEA Linuujus. Herrings. (Clupea, Alosa, Pomolobus, Mdetta, Spratdla, etc., of authors.) (Liuiia-iiK, Syst. Nat. : type Clupea harengus L.) Body oblong, more or less compressed. Mouth moderate, terminal, the jaws about equal, or the lower projecting Teeth feeble, variously placed, rarely absent. Mandibles very deep at base, shutting within the maxillaries. Gill-rakers more or less long and slender, numerous. Scales thin, cycloid, deciduous, entire, rounded posteriorly. Dorsal tin rather short, nearly median, beginning in advance of ventrals, its pos- terior ray not prolonged in a filament. Ventrals present. Anal mod- erate. Belly compressed, more or less strongly serrated, at least be hind ventrals. Species very numerous; found in all seas. (Latin clnj>c«i, a herring.) Our species may be divided as follows: "VoiiHT \vitli aii <>vate pateh of teeth : \entral serrat HITS \\eak : hrn ii'u,s i ( 'i.rrr \ . //«>•< ii'jii.'i, miniliilin. ' ' YIHIH rini' li-i-t li none. tClict-Us longer Ilian diTji, the prroprrrli' produced lorunid liclo\v. ( 1'i iMol.olii s K:.t. n. \'rul ral xi-rs-al HITS \\calc ............................................ sagas. nil. Ventral -i I i :il nrrs >l mn^. /*. .laws with persistent t.rrth ................................. cliryxocliltiri.i. hl>. .laws wit Ih'iit pi-rsisirai I ei-t !i \ M i i r n \ \'al.). lie. -per than l«>n^; slia'l (ALO8A (. u\ irr) 37. CLUPEID^E CLUPEA. 265 *Vomer with an ovate patch of teeth; ventral serratures weak; herrings. (Clupca.) 439. C. Imrenglts L. — Common Herring ; " Whitebait" (young). Bluish ; silvery below, witli bright reflections. Body elongate, com- pressed. Scales loose. Cheeks longer than high, the junction of the mandible and preopercle under middle of eye. Maxillary extending to middle of eye. Upper jaw not emarginate. Lower jaw much project- ing. Gill-rakers very long, fine and slender, about 40 on the lower part of the arch. Eye longer than snout, 4 in head. Dorsal inserted rather behind middle of body, in front of ventrals. Pectorals and ven- trals short ; anal low. Abdomen serrated in front of ventrals as well as behind. Peritoneum dusky. Head 4£; depth 4^. D. IS; A. 17; Lat. 1. 57; ventral scutes 28+13; vertebraB 5G. Atlantic Ocean; abun- dant on the coasts both of Europe and America. Spawns in the sea. (Linn. Syst. Nat.; Giinther, vii, 415: Clupea elongata Le Sueur, Jourii. Acad. Nat. Sci. Phila. i, '234.) 440. C. mifi'aMSis Girarcl. — California Herring. Bluish above; sides and below silvery; peritoneum dusky. Lower jaw strongly projecting j upper jaw not emarginate. Belly scarcely compressed in frout of ventrals, serrate only between ventrals and anal. Gill-rakers very long and slender. Yomeriue teeth weaker than in C, liarenyus ; usually a few teeth on tongue and premaxillary. Ver- tebrae also fewer, 30 + 20=50. Insertion of dorsal slightly nearer front of eye than base of caudal. Head 4^; depth 4. D. 1C; A. 14; Lat. 1. 52. Pacific coast of North America. Very similar to C. liarengux, and equally abundant. (Girarcl, Proc. Acad. Nat. Sci. Phila. 1854, 138; Gunther, vii, 418.) ** Vomeriue teeth none. t Cheeks longer than deep, the preopercle produced forward below. (Pomololm Rafiuesque.*) a. Ventral serratures weak ; mouth entirely toothless. 441. C. s:iy;six Jenyus. — California Sardine; Sadina. Dark bluish above; silvery below; a series of round black spots on the level of the eye, running backward, bounding the dark color of tbe back ; similar smaller spots above, forming lines along the rows of scales ; these spots rarely obscure or wanting, especially in old examples ; tip of lower jaw yellow ; lower part of dorsal yellow ; peritoneum black. Body very slender, subsiform, slenderer and less compressed than a herring, the back rather broad. Ventral serratures very weak. Maxillary reach - * Rafiuesque, Ichth. Oh. 1820, 38: type Pomolobus chrysochloris Rafiuesque. operculum; /Lo/^oS, lobe.) 266 coNTKiurriONS TO NORTH AMERICAN ICHTHYOLOGY — iv. in- nearly to middle of eye. Mandible little projecting, the tip included. Gill-rakers longer tlian eye, very slender and numerous, close set. Op- erdcs. top of head, and seapular region with conspicuous branching tubes and stria-. Insertion of dorsal considerably nearer snout than baM- of caudal. Pectorals and ventrals with sheathing scales. Head •1 : depih r>. D. 15; A. 17; Lat. 1. 5;.J; scutes 18+14. L. lli inches. Pacific coast of North and South America : very abundant, spawning in the sea. IJcsembles the European Sardine (C. pilcliardus], but has no teeth, and the belly less strongly serrate. (Jenyn>. ZiuH. 15e:i.4le.Fish. KU: Mchlta witlm Girard, U. S. Pac. R. R. Surv. x, :;:>": Aloxii nti(*i<-a ides with rather faint longitudinal stripes. Head comparaiively long, the profile, straight and not very steep, form more elliptical than in the others and less heavy forwards. Lower jaw con- siderably projecling; upper jaw emarginate. Opercles rather less einarginate below and behind than in C. nnutlix. Fins low; dorsal 37. CLUPEIP^E CLUPEA. 267 fin inserted nearer snout than base of caudal. Peritoneum pale. Head 4; depth 3|. D. 15; A. 21; Lat. 1. 50; ventral scutes 20+10. New- foundland to Florida; rather common. Little valued as a food-fish. (Mitch. Trans. Lit. & Phil. Soc. N. Y. i, 451: Clupea mattowacca Giinther, vii, 438: Alosa lineata Storer, Proc. Bost. Soc. Nat. Hist, ii, 242, and Hist. Fish. Mass. 162.) 444. C. vei'liaiis Mitch. — Alewife; Branch Herring; Gasper&iu. Blue above; sides silvery; indistinct dark stripes along the rows of scales; a blackish spot behind opercle. Body rather deep and com- pressed, heavy forward. Head short, nearly as deep as long, the pro- file somewhat steep and slightly depressed above the nostrils. Maxil- lary extending to posterior margin of pupil. Lower jaw somewhat pio- jecting; upper jaw emargiuate. Eye large, slightly longer than snout, 3£ in head. Gill-rakers long, 30-40 below the angle of the arch, shorter and stouter fhaii in C. sapidissima. Lower lobe of caudal the longer. Dorsal fin high, a little higher than long, its height 6 Jin length of body. Head 4|; depth 3^. D. 16; A. 19; Lat. 1. 50; scutes 21 + 14. Perito- neum pale. Atlantic coast of the United States; abundant; entering streams to spawn; land-locked in the lakes of Western New York. (Mitchill, Kept. Fish. N. Y. 22. and Trans. Lit. & Phil. Soc. N. Y. i, 454: Clupca pseudoharengus Wilson, Eees's Encycl. : Alosa tyrannus Storer, Hist. Fish. Mass. 156: Pomolobiis pseudoharengus Gill, Kept. U. ri. Fish Com. 1871-72, 811: Pomolobus vernaliy Goode & Bean, Bull. Essex Inst. 1879, 24.) 445. C. eestivalis Mitchill. — Glut Herring ; Blue-back. Very similar to the preceding, from which it is best distinguished by the black peritoneum. The fins are lower and the eyes smaller. At- lantic coast, appearing later than the preceding; less abundant and less valuable as a food-fish. (Clupea ccstivalis Mitch. Trans. Lit. & Phil. Soc. N. Y. il, 1814, 456: Alosa cyanonoton Storer, Hist. Fish. Mass. 161: Pomolobus cestivalis Goode & Bean, Bull. Essex lust. 1879, 24.) tt Cheeks deeper than long, the preopercle scarcely prolonged anteriorly below; no teeth, or a few, caducous, on the jaws; shad. (Alosa Cuvier.*) 446. C. sapidassiBBia Wilson. — Common Shad. Bluish above; sides white or silvery; a dark spot behind opercle, and sometimes several along the line dividing the color of the back from that of the sides ; axil dusky; peritoneum white. Body comparatively deep. Mouth rather large, the jaws about equal, the lower fitting into a notch in the tip of the upper. Preorbital moderate. Cheeks much * Cuvier, Regne Anim. ed. 2, 1829: type Clupea alosa L. (Latin alausa or alosa, an early name of the shad; English allis, German alse, Latin halec.) 2G8 roNTRii-.rnoNS TO NORTH AMERICAN ICHTHYOLOGY — iv. deeper than long, the preoperele extending little forward, joining tbe mandible at a point rather behind the eye, Gill-rakers extremely long and slender, much longer than eye, about GO below the angle of the arch. 1'ins small. Dorsal much nearer snout than base of caudal. lic.ul \\: depth :!. 1). 15; A. 21; Lat. 1. (JO; ventral scutes L'l + 1<>. Atlantic coast of the United States; ascending rivers to spawn. One of the most important of our food-lish. Also introduced on the 1'aeitic coast. N (Wilson, Rrrs's Encyclopedia: Alota, pr&Btdbilis DrKay, NewYorkFauna, Fish. -I'M: l iim>t laic American writers.) 123.— HARENGVLA Valenciennes. . Hi-t. Nat. J'oiss. xx, 2??, 1-17: tv]n- Jhinni/nla lutulim Val.) Characters essentially those of the genus Chqicd, except that the scales are linn, adherent, and regularly arranged. (Latin diminutive of harcnyius, herring.) 447. II. peiisacolae Goode & Bean. Body deep, with projecting belly, formed much as in the shad. Head very short. Scales of the back in front of dorsal with radiating siriaj and sharply serrated edges; other scales smooth, with irregular but unarmed free margins; scales all marked with wavy lines, some- times forming reticulations. Lower jaw rather long, maxillary ex- tending beyond front of orbit. Teeth very small, inconspicuous in the jaws. A large, patch of asperities on the tongue. Gill-rakers line, close set, shorter than the eye, about 50 below the angle. Eye large, longer than snout, :; in head. Head <4 ; depth :\. D. 16; A. 17; Lat. 1.40; scutes 1L' behind vent nils. Peusacola, Fla. (Goode cO Bean.} \ lliirriKjntd jii iinacoJ(JE Goode & Bean, Pror. U. S. Nat. MILS. 1S79, lo'J.) 124.— OPISTIIONEMA Gill. Tln-ntd I Iif i- i nt/. 11, I'm.-. A. -ail. Nat. Sri. 1'hila. l-i'.l, :'.7: I\pr rinfH-n llirixnl»rck.) Oharacters essentially those of J/ron<»nt(. (•'l-'.,ji>-:1 be- hind ; '.,/'•', a thread.) I IN. o. iln-issa (Osbeok) Gill. I'.lnish alm\ c; >il\ cry below : an indist inct bluish shoulder-spot : each scale on the hack with a dark spot, these forming longitudinal streaks. Body Oblong, compressed. I'.elh stron-ly serrate. Tongue with minute teeth. Jaws toothless; h»\\ er j.iw sli-hily projecting; maxillary reach- 37. CLUPEIDJE BREVOORTIA. 260 ing nearly to middle of orbit. Gill-rakers very long and slender. Dor- sal fin inserted in front of ventrals, much nearer snout than base of cau- dal. Dorsal filament about as long as head. Anal very low. Paired fins small. Scales rather firm, smooth. Head 4; depth 3i in length. D. 19; A. 24; Lat. 1. 50; scutes 17 -f 14. Atlantic coasts of America, chiefly southward, the flesh said to be sometimes poisonous. (Clnpca thrissa Osbeck, Reise, 336: Clupea thrissa Giinther, vii, 432: CJupea libertatis Gunther, vii, 433, Pacific coast of Central and South America, is at least very similar. ) 125.— BREVOORTIA Gill. Menhadens. (Gill, Proc. Acad. Nat. Jsci. Pbila. 1861, 37: type dupea menhaden Mitch. = Clupc tyrannus Latrobe.) Body elliptical, compressed, deepest anteriorly, tapering behind. Head very large. Cheeks deeper than long. Mouth large, the lower jaw included. No teeth. Gill-rakers very long and slender, densely set. Gill-arches angularly bent. Scales deeper than long, closely im- bricated, their exposed edges vertical, and fluted or pectinated. Dor- sal fin low, rather posterior. Anal fin small. Intestinal canal elongate. Peritoneum dusky. Species few, inhabiting the Atlantic. (Dedicated to J. Carson Brevoort.) * Scales with their edges entire, fluted. 449. B. patronus Goode. Head larger than in B. tyrannus. Fins lon-g, the height of the dorsal greater than the length of the maxillary; that of the anal more than half the height of the maxillary. Pectorals reaching beyond front of ventrals; insertion of dorsal in front of ventrals, just behind the middle point between the snout and the base of the caudal. Scales moderate, with their margins entire, fluted. Axillary appendages large. Large scales at base of pectoral. Operculum delicately striated. Greenish gray above; sides silvery, with brassy lustre; scapular blotch incon- spicuous. Head 3 in length; depth 2f. D. 19; A. 22; Lat. 1. 50-65. Gulf of Mexico. (Goode.) (Goode, Proc. U. S Nat. Mus. i, 39, 1878.) ** Scales everywhere with their edges strongly serrated. 450. B. tyrannus* (Latrobe) Goode. — Menhaden; Mossbwnker; Bony -fish; Wldtc- Jish; Bug-fish; Fat-back ; Yellow-tail. Head and jaws shorter than in B. patronus. Fins comparatively short, *A parasitic Crustacean ( Oniscus prcegustator Latrobe) is found in the mouthsof a very large proportion of the individuals of this species. The specific names both of the fish and the Crustacean refer to this psculiarity, the ancient Roman rulers (tyranni) having had their tasters (prcegustatores) to taste their food before them, to prevent poisoning. 270 CONTRIIH'TIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. tin- height of the dorsal less than the length of the maxillary; height of anal less than hall' the length of the maxillary. Pectorals not reaching to ventrals. Dorsal inserted slightly behind ventrals, about midway between snout and base of caudal. Scales moderate, strongly serrated, arranged very irregularly. Operculum strongly striated or almost smooth (var. tutrcii). dill-rakers much longer than eye. Bluish above: sides silvery, with a strong brassy lustre; lins usually yellowish; a conspicuous dark seajmlar blotch, behind whieh are often smaller spots. I lead .">_',; depth 3. D. 10; A. 20; Lat. 1. GO-SO; ventral plates 20 + 12. L. 12-1* inches. New England to Brazil; very abundant southward, spawning in the sea. Held in no esteem as a food-h'sh, but very valuable for oil and ma n me; the young canned as sardines. (Cl«iKii tiiniiniiiti Latrobe, Trans. Ami-:-. I'hil. Soc. Phila. v, 77, ISOvJ : l'ln]>m m< nliadin Mitcliill, Trans. Lit. &, Phil. Soc. N. Y. i, 453, 1814: Clupea menhaden IJiintlii-r, vii. !:'.;',: ( hipanodon aureus Agassiz, Spix. Pise. Bras. 5'2 (Brazilian var. anna Coodc): r/»;/, ,< anna GiinthiT, vii, -137 : Al»*a inriiliadai Stoivr, Hist. Fish. Mass. 337; Goodr. I'rnc. I'. S. Nat. Mas. i, ;>, 31, 1878; Goode, Kept. U. S. FishComm. for 1877, complete liio^raphy.) FAMILY XXXVIIL— DOROSOMATIDzE. (The Gizxtrd Shads.) Body short and deep, strongly compressed, covered with thin, decid- uous, cycloid scales. Belly compressed to an edge, which is armed with bony serratures. Head naked, short, rather small. Mouth small, in- ferior, oblique, overlapped by the blunt snout; no teeth. Maxillary narrow and short, with a single supplem ntal bone, not extending to opposiie the middle of the eye, and forming but a small portion of the lateral margin of the upper jaw. Mandible short and deep, its rami enlarged at base. Premaxillary not protractile. Gill-rakers slender, exceedingly numerous, not very long, similar on all the arches, dill- membranes not united, free from the isthmus. Pseudobranchia- large. An adipose eyelid. No lateral line. Dorsal I'm about midway of tin- body, usually behind ventrals. Pectorals and ventrals moderate, each wilh an accosory scale. Anal very long and low. Caudal forked. No adipose lin. Stomach short, muscular, like the gix/ard of a fowl, deiiera 2, species about 12. .Mud-eating lishes of the coasts and rivers of warm regions, of little value as food. (Clii)n ulii • ^rniip ('Imtiii'xxiiui ( iiiutlic-r, vii, 40(5-411.) * Lust ray <•)' ilm-.-al iimdiK-ed iu a long lilaincnt DonosoMA, 120. 39. ENGRAULIDID.E. 271 126.— DOROSOMA Rafinesque. Gizzard Shad. (Chatoessus Cn-vier, 1829.) (Rafinesque, Ichtli. Oh. 1820, 39: type Dorosoma iwiata Raf. = Chipca heterura Raf.) Characters of the family, with the addition that the last ray of the dorsal is prolonged and filiform as in Opistlionema and Mcgalops. (" o a lance; uS/jct, body ; in allusion to the form of the body in the young.) 451. I>. cepediailUEU (Le S.) Gill. — Gizzard Shad ; Hickory Shad. Silvery; bluish above; young with a round dark spot at the shoulder; tips of ventrals and edge of anal often dusky. Body deep, compressed, the back elevated in the adults. Dorsal about median, its filamentous ray about as long as head, sometimes longer, sometimes shorter. Caudal widely forked, the lower lobe the longer. Head 4^; depth 2f. Eye 4£ in head. D. 12; A. 31; Lat. 1. 56; L. transv. 23; scutes 17 + 12. L. 15 inches. Cape Cod to Mexico; abundant southward, entering all rivers, and permanently resident (uvar. heterurum") everywhere in the Missis- sippi Valley in the larger streams; also introduced into Lake Michigan and Lake Erie, and land-locked in ponds from !New Jersey to Nebraska and Texas. A handsome fish, of no value as food. (Megalops cepediana Le Sueur, Journ. Acad. Nat. Sci. Phila. 1817, 361 : Chatoessus cepedianus Giinther, vii, 409 : Clupea heterura Raf. Amer. Mouth. Mag. 1318, 354 : Chaioessus ellipticus Kirtland, Bost. Journ. Nat. Hist, iv, 235.) FAMILY XXXIX— ENGRAULIDID^. (The Anchovies.) Body elongate, more or less compressed, covered with thin, cycloid scales. Head compressed. Mouth extremely large, nearly horizontal, usually overlapped by a pointed, compr?ssed, pig-like snout. Gape very wide, the maxillary very long and slender, formed of about three pieces, extending backward far behind the eye; in some genera, much beyond the head. Premaxillaries not protractile, very small, firmly joined to the maxillaries. Teeth small, variously arranged, usually fine and even, in a single row in each jaw. Eye large, well forward, so that the snout is very short. Preorbital narrow. Opercles little developed, membranaceous. Gill-rakers long and slender. Branchiostegals slender, 7-14 in number. Gill-membranes separate or joined, free from the isth- mus. Pseudobrauchise present. No lateral line. Belly rounded or weakly 272 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. -ei rate. Fins various. No adipose fin. ('andal forked. Small fishes; usually s\\ -jinming in large schools. Abundant in all warm sens, occa- sionally cnl din-- rivers. Cienera 0, species about GO. ' ' '.rronp KngrauHdina Giinther, vii, 3S3-40G.) Ill-membranes .-eareely eoimeeted, the gill-openings heinLT extremely wide; no ]>< dor.-il filaments; anal tin moderate, its orijjin behind that of t lie dorsal ; apper jaw projecting beyond lower; maxillaries not extending beyond gill- openings; teeth .-mall, or wanting, in one or both jaws., .STOLEPHORUB, i'j?. 127.— STOt-EPIIORUS Lac6pede. Anchovies. (Engraulis Cuvicr, 1817.) i l.aeriH'dr. Hist. Nat. Poiss. v, 381, 180:5: type Alherina japonica Gmclin.) Body oblong, compressed, covered with rather large, thin, deciduous scales. Snout conical, compressed, projecting1. Maxillary extending backwaid far behind eye, about to the base of the mandible. Oper- culum narrow, membranaceous. Teeth small, usually ou the jaws, vomer, palatines, and pterygoids, those of one or both jaws sometimes obsolete. Anal fin moderate, free from caudal (its rays lf>~ ID). No pec- toral filaments. Dorsal about midway of body, posterior to ventrals. Pectorals and ventrals each with an accessory scale. Adipose eyelid obsolete. Branchiostegals 9-14. Gill-membranes not united, leaving the narrow isthmus uncovered. Species about LV), in all warm regions. (ff-»/.?;, a stole, a white band worn by priests; pw/;(^> bearing; in allusion to the silvery lateral band.) tli line, even, inimorons, persistent in both jaws. t Sides without distincl silvery band. S. rin^oiis (Jenyns) Jor. & Gilb. — . P.luish above; sides and below sihci-y. not translucent. Xo silvery latt ral band. Uody little com]>ressed, rounded aliove, slightly cari nated below, not serrated. Head long, anteriorly compressed, the snout pointed and protruding. Head nearly twice as long as deep. K\ e large, very near the tip of the snout. Maxillary extending beyond root of mandible. ( )perc!e deeper than long, placed very obliquely, (lill- rakers \ ei \ long, much longer llian the eye. Head .">J, ; depth ;"U. I >. 1 I : A. L'L'; Lat. 1. 10; 13. 11. I,. 7 inches. Pacific coast, from Van- • •oiiver's Island to Peru: extremely abundant. The largest of our an- chovies. rini/i ;M .b'ii\ n>. Vnyain- ISea^le. I:1,!',: i:itr/r(tnlin r\n. 1-; A. L'(>. L. 4 inches. West Indies; occasional north- ward. A specimen in our collection from Wood's Holl, Mass. ( ICiujniuH* jn r/'«.sri(i//(.v Pooy, Mem. Cuba, ii, 312: Eitgrauliti 2>crfa8ciutut< Giiuther, vii, aa. laxly si mn^ly roinpn-ssrd, translucent in life. J •»<>. S. «lcii<:atBSSilllius (Giranl) Jor. & Gilb. Very pale, olivaceous, translucent, with some dark points, and a sil- very lateral band not as wide as the eye. Head short, nearly as deep as Ion-. Eye large, much longer than the blunt snout, which projects considerably beyond the lower jaw. Gill-rakers numerous, .slender, nearly as long- as the eye. Maxillary reaching past the root of the man- dible. Lower lobe of caudal the longer. Anal rather long. Dorsal inserted midway between caudal and front of eye. Head 4] ;; depth 1:;. D. 13; A. l'.".. Lat. 1. 40. L. 3 inches. San Diego Bay and southward ; locally abundant. (EiKjrnnlln (ldivati»xi»iun Giranl, Proo. AcaH. Nat. Sri. Phila. 1854, 154, anil U. S. Pac. II. II. Surv. x, 333: Enyruulis (IfUcatitmiiiuts Guutuer, vii, 391.) 457. S. comprcssilS (Giranl) Jor. & Gilb. — "Sprat." Very pale, olivaceous, translucent; a silvery lateral band as broad as the eye. Body strongly compressed, deeper than in other species. Head short, nearly as deep as long. Eye large, anterior, much longer than the blunt snout, which does not project much beyond the lower jaw. (lill-rakers numerous, slender, nearly as long as the eye. Maxil- lary reaching beyond the root of the mandible. Lower lobe of caudal the longer. Anal fin very long. Dorsal inserted midway between cau- dal and fro ni of eye. Pectoral with a basal sheath. Head 1A: depth 3$. I). 1L'; A. 31. Lat. 1. 40. L. (5 inches. Very similar to N. (Icllcdtifuii- )IIHN, but l:irger, \\ith a longer anal tin. Point Concepcion to Mexico; abundant southward. OOmpressiU Qr\T&T&} I'. S. I'ac. li. K. S:irv. Pish. :!:: >: Kmjruulln compressus (iiintlirr. vii, 395. FAMILY X L.— A LKI'l 1 )OSAURII >.K. (Tin- l.ed, scaleless. J lead compressed, with the snout much produced, and \\ith the cleft of the mouth very wide. l'renia\ill:ir\ ver\ long and ver\ slender, Ibrming the entire margin of the upper ja\v, not protractile. Maxillary thin, needle-like, as long as 40. ALEPIDOSAURID^ ALEPIDOSAURUS. 275 the premaxillary, immovable. Teeth very unequal, immovable, and subject to many variations in the same species ; a series of small teeth the entire length of the preinaxillary ; those in front sometimes larger and curved. Palatine teeth compressed, triangular, pointed; two or three of the anterior ones exceedingly long and strong, fang-like; the posterior ones moderate. Teeth of the lower jaw similar to those on the palatines, one pair in front and two or three pairs in the middle being- much enlarged. No teeth on the tongue. Eye large. Gill-openings very wide; the gill-membranes not united, free from the isthmus. Gill- rakers stiif, shortish, spine-like. Branchiostegals 5-7. Pseudobranehiae large. Opercular bones thin, membranaceous. Dorsal fin very long, oc- cupying nearly the whole of the back, of more than 40 rays; adipose fin present, moderate; anal fin moderate; caudal fin forked. Air-bladder none. Large ^shes of the deep seas, found in the Atlantic and Pacific. One genus and 6 or 8 species. Every part of the Alepidosawrus+s so fragile that it is extremely difficult to procure specimens. The structure of the dorsal fin is so delicate that it must be liable to injury even in the water; the bones are very feebly ossified, and the fibrous ligaments connecting the vertebrae are very loose and extensible, so that the body may be considerably stretched. "This loose connection of the single parts of the body is found in numerous deep-sea fishes, and is merely the consequence of their withdrawal from the pressure of the water to which they are exposed in the depths inhabited by them. When within the limits of their natural haunts the osseous, muscular, and fibrous parts of the body will have that solidity which is required for the rapid and powerful movements of a predatory fish. That fishes of this genus (Alepidosaurus) belong to the most ferocious of the class is proved b}' their dentition and the contents of their stomach, but it is worthy of notice that although the mouth is so deeply cleft, the lower jaw cannot be moved from the upper at a greater angle than about 40°." (Giinther.) (Scopelidcc, group Alepidosaurina Giiutlier, v, 420-423.) 128.— ALEPIDOSAURUS Lowe. Lancet- fislies. (Alepisaurus Lowe, Proc. Zool. Soc. Loud. 1833, 104: type Alepisaurus ferox Lowe.) Characters of the genus included above. The name Plagyodus Steller (Pallas, Zoogr. Eoss. Asiat, iii, 383) has been lately accepted by Dr. Giiutlier for this genus. A specimen of one of the Pacific species was obtained by Steller from the Kurile Islands, and a brief description of 27G CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. it, under I lie name of Plaf/yorttiN, left by him in manuscript, was after- wards quoted by Pallas, without indorsement. Steller wrote before Linna-us, and apparently used the name Playi/mlnx as a mononomial designation for his particular specimen or species, and not in the sense of a Linmcan genus. It seems to us, :it present, best to retain the name («, privative; /:-:?, scale; //<;?, Saurus = Synod us.) * Ventral rays I) or 10. (.Ilcp>. 5. Mon- terey to Alaska; occasionally cast on shore. '•ill, I'rnc. Arad. Nat. Sci. 1'liila. l-lr,', 1-JH; .•llcpidoxininix borculix GiintluT, v, 4'J:5: duilo/ni-i *< ;•;•« cill, 1'i'oc. Acad. Nat. Sri. 1'liila. isiivi, 1I51, from Monterey ; known l>y a mutilated specimen only, whieh "dill'ers I'nnn ('. buri'tilin liy the oliloii^ o|>errii!nm. the nearly n|iial triangular sliajie nl' the eoaleseent inlVaoiicrrular lione almve the dividing riut \\iih an oliliijiie exeavalion at its liase, which deserilies nearly the third ol' a circle, as well as the sculpture of the portion below the dividing ridge". FAMILY XLL— PARALEPIDID^E. (The P.ody elongate, somewhat compressed, formed much as in a I'.arracnda, co\ civil \\ illi c\cloid scales of model-ate or rat her large si/.e. Head long, usually scaly on the sides. Mouth \ cry large, lower ja.\v projecting. PremaiJIlary not jiroject ile, vcr\ long ;nid slender, forming the entire margin of I he upper ja\\ . Maxillary long and slender, closely adherent •Gill, I'roc. Acad. Nat. Sci. 1'hila. l-i'..'. T'-: l\pe .lli'j>ix< all'tnli* Poey, from Cuba. (iic.r.\u:, .->!eiii: TtOVS, loot ; /. <•., ventral lius ol" many stems or rays.) 41. PARALEPIDHLE STJDIS. 277 to the premaxillary. Teeth rather strong, pointed, in single series on the jaws and palatines; some of them on lower jaw and palatines some- times very long and fang-like, and most of them freely depressible. Opercular bones thin. Pseudobrauchire present. Gill-membranes sep- arate, free from the isthmus. Brauchiostegals about 7. Gill-rakers short, sharp, spine-like. Eye large. Lateral line present, its scales usually enlarged. Dorsal fin short and small, behind the middle of the body, nearly or quite over the veutrals. Adipose fin present; anal fin low, rather long; caudal fin short, narrow, forked; pectorals rather small, placed low. Pyloric cosca none. No air-bladder. Phosphores- cent spots few or none. Fishes of the deep waters of the Atlantic and Pacific;, resembling Sphyra'iia in form and dentition. A single genus and about 5 species are now known. (Scopelidce, g oup Paralepidina Giinther, v, 418, 420.) 129.— SUDIS Eafinesque. (Paralepis Eisso.) (Eafinesque, Caratteri cli Alcuni Nuovi Generi, etc. 1810, 60: type Sudis hyaUna Eaf. of the Mediterranean.) Characters of the genus included above. Two genera are usually recognized, differing in the development of the canines of the lower jaw, a character which appears to be of minor importance. (Latin sudis, a stake, an ancient name of Spliyrccna.) "Lower jaw with. 3-5 very long fang-like teeth on each side. (Sudis.) 46O. S. riaigems Jordan & Gilbert. Body very slender and elongate, compressed, the depth forming about one-sixteenth of the length. Head rather slender, anteriorly pointed and moderately depressed. Mouth large, horizontal, the gape extending more than half the length of the head. Margin of the upper jaw formed entirely by the very slender, nearly straight premaxillaries, which are closely appressed to the long and slender maxillaries. Maxillaries ex- tending to below the eye, nearly as far as the mandibular joint. Tip of upper jaw emarginate; tip of lower jaw rather broad, turned up, and fitting in the notch of the upper jaw. Premaxillaries armed with a series of small, sharp, subequal, close-set teeth, which are hooked back- ward ; a long, slender canine in front on each side. Lower jaw with about 10 sharp, slender teeth on each side, these teeth very unequal, some of them short, three or four very long and canine-like. Near the front is one fang-like tooth on each side, then a considerable interspace, 278 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. behind which the others are arranged partly in two rows. Most of these !rc ili, especially the inner and larger ones and the anterior canines, are f: cdy dcpressihle. A long series of teeth on the palatines, one or two of the anterior teeth on each side and one or two others long, slender, and fang-like. Tongue free anteriorly, ronghish, but apparently with- out teeth. Scales very large, cycloid. Dorsal fin inserted somewhat behind the middle of the body, at a distance of nearly 4 times its base in front of the anal, its height a little greater than the length of its base. D. 11 ; A. -5. Anal liii anteriorly nearly as high as the dorsal, its posterior rays low. Pectoral fins placed low, rather short, about as long as the maxillary. Caudal fin short, narrow, apparently forked. Veutrals (lost in the type) probably in front of the dorsal. Coloration light olive, the sides silvery, with dark punctulations. Peritoneum silvery, underlaid by black pigment. Santa Barbara Channel, California. (Jordan & Gilbert, Proc. U. S. Nat. Mus. I860, 273.) **Lo\vrr j:i\v \virliont 1'anif-likr teeth. (Paralcpis Risso.*) a. Ventral tins inserted behind the dorsal. (Arctoscnus Gill.) 461. S. boa'calas (Reinhardt) Jordan & Gilbert. Olivaceous. Snout as long as rest of head; mandible included, its upturned tip fitting into an eiuargination of upper jaw. Teeth as in »S'. ro,v.',r,'o/,s, but considerably stronger. Pectoral and ventral fins small, the latter inserted behind the dorsal. Head -I.1, ; depth 12. B. 7; D. S; A. 32; P. 11; V. 9. Greenland to Gulf of Saint Lawrence, ( l': Paralepia korealia (iiinlhcr, \. 418: .In-tHZcnim (><»•< alia Gill, Proc. Ai-ad. Nat. Sri. Pliila. 1HI>4, 1<— . > 462. S. coruscaiis Jor. & Gill). Dusky olivaceous; sides of head silvery; bases of fins generally black; rami of mandible each with a double series of minute phos- phorescent spots. Uody very elongate, of nearly uniform depth, the caudal peduncle very slender; abdomen compressed. Head long; snout sharp, half length of head. Eye large, high. Jaws equal; max- illary reaching vertical fro: a nostril; tip of lower jaw lilting into an cinargiuation of premaxillaries. None of the teeth fang-like; premax- illarics laterally \\ilh minute teeth; 1 or ~> longer teeth in front; vomer with miniile teeth; anterior palatine teeth long, the posterior short; teeth of lowe.- jaw slender, dist ant , unequal. Scales deciduous, those of lateral line enlarged. Fins all very small ; venirals entirely behind , Km-. Mi'-rid. iii, 47',', l-.'U: tyuc Cun'jonu.'j panili^ia Jiisao. (napa, ucar; ir, scales.) 42. SCOPELID^E - SYNODUS. 279 dorsal, their distance from front of orbit twice that from base of caudal; distance of front of dorsal to base of caudal half its distance from tip of snout; caudal widely forked. Head 4; depth 13. D. 8; A. 31; P. 11; V. 9. Lat. 1. GO. Puget Sound, scarcely differing from the pre- ceding, the teeth a little weaker. (Paralepis coruscans Jor. & Gill). Proc. U. S. Nat. Mus. 1880, 411.) FAMILY XLIL— SCOPELID^E. (The Scopdicls.) Body oblong or elongate, compressed or not, naked or covered with scales, which are usually cycloid. Mouth very wide, the entire margin of the upper jaw formed by the long and slender premaxillaries, closely adherent to which are the slender inaxillaries, the latter sometimes rudi- nieutal or obsolete. Teeth various, mostly cardiform. on both jaws, tongue, and palatines; canines often present; large teeth usually de- pressible. No barbels. Opercular bones usually thin, often incomplete. Gill-membranes separate, free from the isthmus. Branchiostegals usu- ally numerous. Pseudobranchioe present. Gill-rakers various. Lateral line usually present. Cheeks and opercles commonly scaly. Adipose fm present in most of the genera. Dorsal fin short, median or rather anterior, of soft rays only. Pectorals and veutrals present. Anal fin moderate or long. Caudal forked. Skeleton weakly ossified. Air- bladder small or wanting. Intestinal canal short. Sides sometimes with phosphorescent spots. Eggs inclosed in the sacs of the ovary and extruded through an oviduct. Genera 10, species about 50, mostly in- habiting deep water in warm regions. (Sco2)did<",nu-, ancient name of some fish, from iru-^Jdou^j teeth meeting, not shutting past each other like scissors.) * Snout rather pointed, longer than eye; upper jaw the louger. (Sy nodus.) 4G3. S. fCBtCBlS (L.) Gill. — X•<•; Li;\ in head. Scales less regularly a: ranged and the rows less oblique than in N. li«'ii>cc]>s ; those on the opcrcle in about ."» rows, on the cheeks in 7; L'5-.'J!) scales along back before dorsal, 1 in a vertical row between adipose I'm and lateral line, 5 in an oblique row. Pectoral I'm short, not reaching ventrals, its length three-fourths that of the premaxillary. Ventral lar^e, its length from outer edge of base greater than from lip of snout to upper edge of gill-opening. Interorhital space considerably concave, with radial ing ridges. Head I ',. II. IL'; 1). 11; A. 11; V. S; scales 7-IH-S (the \erlical rows counted obliquely). L. ll' inches. Cape Cod to South America; common southward. Not valued as food. ^'iliiiu J'uli i if I.. S\st. Nat.: Satinm fa tat* <;iintlirr, v, /.'.Hi: &u ur tut J'y£, night; f»?, light : hence amended by Cocco to Nyctophus.) 4GG. .11. CB'CCllllarc Jordan A. (lilhrrt. Uody much compressed, deepest in front of the base of the pectorals, bluntly convex anteriorly, tapering behind. Ventral region much more arched than dorsal. Caudal peduncle long and very slender. Head short aad high, abruptly rounded in profile, the snout very blunt. Jaws equal, the snout not projecting beyond the mouth. Maxillary very slender, scarcely widened to its tip, and not dilated, its extremity reaching beyond the eye to the margin of the preopercle. Premaxilhi- ries anteriorly on a level of the pupil. Teeth very small, present on all the dcntigerous bones. Kami of the mandible nearly parallel, com- ing together in a sharp keel below. Orbital margin above and in front with a thin membranaceous rim, that in front distinct and formed by the upturned edge of the preorbital. No orbital spine. Nasal bones membranaceous, their edges upturned, forming a horizontal groove. A groove between the frontal bones. Orbital margins separated by a groove from the preopercle. Margin of preopercle very oblique. All the membrane bones extremely thin, papery. Eye large, .'*£ in head, dill-rakers long and slender. Head o£ in length to base of caudal; depth U. Ik-ad and body completely covered with thin mem- branaceous scales, those on the middle of the sides not elevated and not noticeably larger than the others. Free edges of all the scales cienidate, some of them, especially on the back, with the en-nations acute, but without spines, the scales being truly cycloid. About !."» scales in a longitudinal series. A phosphorescent spot on each man- dible near the svmphysis, ."..'! pairs of spots along the belly, <» in front of venlrals, (i between venlrals and origin of anal, and L'l between front of ;in;il and base of caudal. Caudal peduncle above and below with two or three backward-directed spines, which are apparently the, e\-eited tips of vertebral processes. \). 1L'; A. Hi; the lins rather low. Origin of dorsal nearer the snout than the base of caudal, much be lii i id the base < if the venlrals. Ycntrals short, not reaching half way to vent. Pectorals reaching base of ventrals. Color very dark steel- blue above, silvery on sides and below, with dark metallic lustre; the 43 STERNOPTYCHIDJE MAUROLICUS. 283 usual phosphorescent spots present, as above described; no evident cream -colored blotch on the back of tail. L. 2i inches. Santa Barbara Channel, California. (Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880,274.) 46?. ITI. glaciate (Rehih.) J. & G. Snout very short and obtuse, with the upper profile descending in a very strong curve ; cleft of mouth oblique ; maxillary reaching to the angle of the prreoperculum, and terminating in a triangular dilatation. Scales smooth, those of the lateral line enlarged. Eye very large, more than one-third the length of head, which is nearly as deep as long. Depth 4, nearly equal to length of head. D. 13; A. 17; V. 8. Lat. 1. 30. Coasts of Scandinavia and Greenland. (Giinther.) . (Scopcltix glacialis Reiulumlt, Dansk. Videusk. Selsk. 1838, vii, 115, 126: Scopelus gladalis Giinther, v, 407.) FAMILY XLIIL— STERNOPTYCHID.E. (The SternoptycMds.) Body oblong or ovate, naked. Mouth very wide, its cleft oblique or vertical. Margins of upper jaw formed laterally by the maxillaries, the edges of which arc toothed. Teeth pointed, mostly small. Opercular apparatus incomplete. Gill-openings very wide, the membranes not connected, free from the isthmus. Pseudobranchise present. Gill-rakers long or short. Lower part of body and head with series of phosphores- cent spots. Adipose fin present, often small. Dorsal fin moderate, usually median, sometimes preceded by a rudimentary spiuous dorsal. Eggs extruded through oviducts. Skeleton imperfectly ossified. Small fishes of the deep seas. Genera 4; species about 12. (Sternoptycliida groups Sternoptychina and Cocciina Giiiither, v, 384-391.) *No scales; no rudimentary spinons dorsal; psendobranchise present. (Cocciinw.) t Lower jaw prominent MAUROLICUS, 132. 132.— MAUROLICUS Cocco. Argentines. (Cocco, Lettere sni Salmoui, 32: type Maurolicus amethystinopunctatus Cocco.) Body oblong, compressed, naked, covered with silveiy pigment; series of phosphorescent spots along the lower side of the head, body, and tail. Head compressed, the bones thin, but ossified. Cleft of mouth wide, oblique, the lower jaw prominent. Maxillary large, broad, much produced backwards, receiving the slender preniaxillary in the upper 284 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. concave- part of its margin. Doth jaws with minute teeth. Gill-rakers very Ion--. IVrtorals and ventrals develoi>e(l. Dorsal well back, but before anal. Adipose fin rudimentary. Anal fin long. Branchiostegalfl 8 or 0. Si/.e small. Species about 4. (Dedicated to Maurolico, an Italian naturalist.) "rhnsjilioiv.-rrnt ni-^aiis appearing as impressions on the skin. 46§. OT. foorcaSis (Nilss.) Giinther. Dark greenish, sides silvery. Dody compressed. Mouth wide, the lower jaw much projecting. Teeth small. Eye large, 3 in head. Five luminous spots on the throat, 12 between pectorals and ventrals, above these a row of 8, 5 between veutrals and anal, vent to tail i»4. Dorsal nearer tail than snout. Adipose fin very small. Ventrals below dorsal. ( audal forked. Head ;5i; depth 3£. D. 10; A. 15. L. 2.} inches. (Xtorcr.) North Atlantic; rare off our coasts. (ScojHlus l)(-ri-(i1iti Xils.>oii. Olisrrv. Z<><>1. '.): Scojiclux hnnibnldti Ik-Kay, N. V. Fauna, Fish. 240: Scopelus humboldti Storei, 1 list. Fish. Mass. :}•>- (not <>t ( 'nvier). FAMILY XLIV.— CIIAULIODONTID.E. (The Cliauliodonis.} Body oblong or elongate, compressed, covered with rather large, thin, deciduous scales. Lateral line present. No barbels. Series of phos- phorescent spots running along the lower side of the head, body, and tail. Head much compressed, the bones thin, but ossified. Mouth with the cleft extremely wide, its margins formed by maxillaries and pic- maxillaries, both of which are provided with teeth. Teeth unequal, some of them long and pointed, fang-like. Pectorals and ventrals well developed. A dipose fin present. Caudal forked, dill-openings very wide. No pseudobranchiir. No air-bladder. Dec]) waters of the At- lantic. denera 2, GonoNtonut and ('Imiilnxlns^ differing widely in the position of the dorsal, the size of the anal, and the development of the gill rakers; L' species are known. rnoptyohidte group ^haul'uxlDniinn cii'itlii-r. v. :;'.M, :ii>J.) I'.'i-sal in I'roni nl vi-nii-aU; n<> jjill-rak.-rs; anal \vitli l-^s tlian -,'() CiiAri.ioi.rs. 133. i:t:i.-c;ilAlTl,lODirK ISI.M-II A Viper-fishes. Syst. Icliih. I.-M|, |:;n: \>]>t JJody elongate, compressed, covei-ed \\ith very thin deciduous scales of moderate si/.e. Head short, much cum]iicssed and elevated, the 45. STOMIATID^E. 285 lower jaw projecting, the suout mucli shorter than eye. Mouth ex- tremely wide, the cleft reaching much beyond eye. Premaxillaries with four long fang-like canines on each side. Mandible with pointed, wide-set teeth, the anterior ones excessively long; none of these large teeth received within the month. Maxillaries with fine teeth; palatine with a single series of small pointed teeth; 110 teeth on the tongue. Eye moderate. Pectorals moderate. Veutrals large. Dorsal fin high, placed anteriorly, well in front of the ventrals. Adipose fin moderate, sometimes fimbriate, opposite the low, short anal. Caudal moderate, forked. Gill-openings very wide. 'No gill-rakers. Brauchiostegals numerous. (-/aul'.<>-, exserted; do ; Y. 7; Lat. 1. 56. L. 12 inches. (G farther.) Mediterranean and deep waters of the Atlantic ; a specimen found in the stomach of a cod on George's Banks. (Blocb & Schneider, 430; Gunther, v, 392.) FAMILY XLV.— STOMIATIDJE. (The Stomiatoids.) Body elongate, naked or covered with thin deciduous scales. Mouth very wide. Lateral margin of upper jaw formed by the niaxillaries, which are provided with teeth along their edges. Teeth usually very strong, unequal, some of them often fang-like. Gill-membranes not joined, free from the isthmus. Brauchiostegals numerous. A long fleshy barbel suspended from the throat. No pseudobranchine. Sides with phosphorescent spots. Dorsal fin short, median or posterior, with- out spines. Adipose fin present or absent. Pectorals, and ventrals present. Opercular apparatus incomplete. Skeleton feebly ossified. Eggs excluded through oviducts. Deep-sea fishes of the Atlantic. Genera 4; species 8 or 10. (Stomiatidcc Giiuther, v, 424.) *No adipose fin; dorsal opposite anal. (Stomiatince.) a. Body with fine deciduous scales STOMIAS, 134. aa. Body naked. 280 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 6. Vomer ami palatines \vitli teeth ........................... EciuosTOMA, 13.". bb. Vunirr ami palatine* tool lil->s .......................... MAI.AI OSTKL'S, I'M. '' Adipose tin present ; dorsal in front of anal; body naked. (Antr7 : type I-'i-Jiinntnina Ixirlxifum Ln\ve.) I'.ody floii-alc. compressed, scaleless. Head rather compressed, the snout short and the cleft of the mouth very wide. Teeth pointed, un- equal. those of the premaxillary and the front of the lower jaw being longest; maxillary teeth in a single series, those of the lower two-thirds being small; teeth of the hinder par! of the mandible in a double or triple series; vonier with a pair of fangs; palatines with a single series of small pointed teeth; t wo groups of similar teeth on the tongue. K\e i»f moderate si/.e. < )percnlar port ion of the head very narrow and llex- ible; a fleshy barbel mi flic centre of the liyoid region. Dorsal fin far back, Opposite anal. Caudal forked. Vent not far in advance of caudal tin. Pectorals and ventrals feeble, the latter behind the middle of the 44. STOMIATID.E ASTRONESTHES. 287 body. Series of phosphorescent dots along the lower side of the head, body, and tail. Gill-openings very wide. Gill-rakers minute. No pseudo- branchiae. No air-bladder. Atlantic, (e^j?, a viper; liiinl,-its are mostly deep-sea fishes. In economic im- portance this family ranks among the very lirst, and the salmon and trout in all northern regions arc the choicest pri/es of the angler. i ( .imi her, \i, 1 -•.'().">.) Pylorir n.-r.-i l',-u urnuiir; .stuuiiicli I'm nc:irl\ it\«Tilic- \c-ntr:ils. ( . l/'./i iiliniiid'. ) a. Branohiostegals 3 or 4 ; Ixxly i-lmi.nalr, sul>cyliinlric:il ---- MlCUOSTOMA, 1U8. an. ]5r;ilicliiiis|i-^:i! , i; 8; bodj ciiiiiliivsscd. b. Adipose I'm !<>n^ and low, scarcely shorter than dorsal I'm. MA I.LOTUS (.juv.) I'll. Adipose I'm normal, :.hort and hi^h. c. Ventrals inserted in front ol' I he middle of ihe dorsal; month lurjje. \er\ small; males \\ith villons hands; teeth leehle; pectoral rays UJ--JU ............................. M ALLOT us, 140. 46. SALMONID^ MICROSTOMA. 289 dd. Scales larger, similar in both sexes; pectoral rays 10-12. e. Teeth feeble, those on tongue very weak ; scales small, adherent. THALEICHTHYS, 141. ee. Teeth stronger, those on tongue enlarged ; scales moderate, decid- uous OSMERUS, 112. cc. Ventrals inserted under or behind the middle of dorsal; mouth moderate or small. f. Scales cycloid. g. Jaws with minute teeth ; maxillary reaching past front of eye. HYPOMESUS, 14:3. gg. Jaws toothless; maxillary not reaching front of eye. ARGENTINA, 144. jf. Scales ctenoid HYPHALONEDRUS, 145. ** Pyloric co?ca many ; stomach siphonal. tJaws toothless or with a few feeble asperities; scales rather largo; anal fin somewhat elongate; maxillary short and broad ; not »u- adromous ( Coregoiiiiict}) COKEGONUS, 146. tt Ja\vs with distinct teeth; scales mostly small. (Salmonince.') 1i. Dorsal iiii very long and high, of about 20 rays; scales mod- erate; tongue toothless; not auadromous. THYMALLUS, 147. hh. Dorsal fin moderate, its rays 9-15 in number; tongue with teeth. i. Dentition very feeble, incomplete; anal fin elongate, of about 17 rays; scales moderate; not auadromous. STENODUS, 148. ii. Dentition strong and complete; conical teeth on jaws, vo- mer, and palatines ; tongue with two series of strong teeth (deciduous in very old specimens of Oncorhynchus); scales small. j. Anal fin elongate, of 14-17 rays; vomer narrow, long, flat, with weak teeth; species black spotted. ONCORHYNCHUS, 150. ij. Anal fin short, of 9-11 developed rays. k. Vomer flat, its toothed surface plane; teeth on the shaft of the vomer in alternating rows or in one zigzag row, those on the shaft placed directly on the surface of tho bone, not on a free crest (posterior vomerine teeth some- times deciduous) ; species black spotted SALMO, 151. Ick. Vomer boat-shaped, the shaft strongly depressed, with- out teeth ; very small, about 200 in the course of the lat- eral line; species not anadromous, spotted with red or gray SALVELINUS, 152. 13§.— THICROSTOMA Cuvier. (Cuvier, Regne Auim. ii, 1817: type Gasteropelecus microstoma THsso=Microstomaro- tundatum Risso.) Body elongate, cylindrical, covered with large, thin, silvery scales. Head short. Mouth very small, terminal; premaxillaries very small; maxillaries very short and broad, not extending to the front of the very large eye, which forms more than half the depth of the side of the head. Lower jaw and vomer with a narrow series of fine teeth; no other teeth. Dorsal fin short, inserted before or behind the veutrals, which are behind Bull. Nat. Mus. No. 1C 19 290 CONTRIBUTIONS TO XORTII AMERICAN ICHTHYOLOGY - IV. the middle of the body; an;d tin small: caudal sm.-.ll, forked, its central ]>art scaly: pectoral rather narrow; adipose, tin small, fringed, present in the young, but usually disappearing with age. Branchiostegals ;> or 4. I'seudobranchia' well de\ eloped. Air-bladder large. silvery. No pyloric cu-ca : mucous membrane of stomach papillose. Atlantic < )cean, in deep waters. (;c//«/-, small; <>-('>;i.a, mouth.) ITS. I?l. grffiiilnmdiriiiii l.Vinh. "This fish a]>]iears to be intermediate between Arycnlhm and Micro- xtoma, having the dorsal fin inserted for the greater part in advance of the vrntrals. and a series of line teeth in the lower jaw. Teeth on the vomer, noiie on the tongue. Adipose tin conspicuous. The height of the body is one-half the length of the head and one-tenth of the total." II. ."•; I). 11; A. 10; V. 10. (Gihitlicr.) Greenland. (MicroKlnnuix griliiI(iinHritN Rcinli. Vidensk. Sclsk. Niiturv. Matheni. Afhandl. viii, 1MI. Ixxiv: (.iiutlicr. vi, >J05.) 139.— ftlAlLLOTlIS* Cuvier (n»n»g). Form and dentition of Tlutlcichtht/N. No trace of scales in the known examples, which are immature. Dorsal tin well backward over ventrals, its insertion nearer the tip of the caudal than the snout ; adipose tin long and low, its height much less than the length of its base, its base little shorter than that of the dorsal: pectoral rays in increased number; anal moderate. Pseudobrancliia- well developed. Branchiostegals !». I'yloric caeca 4. •17IJ. JI. viEBosus (Miillrr) Cnvier (i/onni/). Translucent whitish; a silvery lateral stripe; upper regions closely punctate. Kye a little shorter than snout, 1 in head. .Minute teeth in both jaws; middle of tongue rough; maxillary reaching front of pupil. Ventrals and pectorals ab::iit equal in length to the longest dorsal ray, •which is 7 times in length of body; ventrals inserted below first ray of dorsal, not reaching vent; space between dorsal and adipose tin two- § thirds length of head; length of adipose fin more than twice its height, two-thirds base of anal. Head 1; depth (i. I). IL'; A. L'l ; V. 8j I*. Hi. L. 4 inches. P.chring's St raits. Probably developed scales when adult. A^ iln-sr pa^rs arc pas-iin^ tliroii^li ili<- pri >s, \\r li-ani from I)r. llcaii tliat tin- hi-i-t- ili'srriln-d. collrclcil liy liini in Tx-lirin-'N S'raits, is not a distinct j^ciius and hpccics av ;it first Mipjiuscd. Inil tin- .M"1'1,^"' M.a, rich; i'/J'uz, fish.) •177. T. |>:u-iifiriis iK'irh.) (int.— I'.nhn-hon; Candb-Jlli. < 'olor white, scarcely silvery; upper regions rendered dark iron-gray by the aeciiniulat ion of dark punctulations. Body rat her elongate, si.-ndcr. and less compressed than in OmnrniH. Jlead long, blunter than in /////^///r.s'.v.v />rxi. 8; I). 11; A. 21; P. 11. I .at. 1. 7."); pyloHc co-ca 11; vertebra? 70. L. 1U inches. Oregon to Alaska, ascending the rivers in enormous numbers in the spring. Au •I'llent pan-fish, unsiupassed in delicacy of llesh. (Sal/no (M/illutiiH !) itiK'ijli-nn I.'ichnnNoii, F;inna lior.-AiiHT. iii, 22G: Thaleichthyt *i (Jirunl, I'. S 1'ac. 1>. li. Surv. I'ish. :i'J."»; (uiiitlicr, vi, 1C>~.) 112.— OS3IEKUS Smelts. (Artcdi ; LinnjL-iis. Sy.st. Xat. : lypi- Salmo eperlanus "L.) Body elongate, compressed. Head long, pointed. Mouth wide, the slender maxillary extending to past the middle of the eye; lower jaw projeeling. I'reorbital and suborbital bones narrow. .Alaxillaries and premaxillai'ii-s with line teeth; lower jaw with small teeth, which are, larger posteriorly; tongue with a few strong, fang like teelh, largest at the lip; hyoid bone, vomer, palatines, and pterygoids \\ ii li wide set teeth. < Jill-rakers long and slender. Ilranchiostegals S. Scales large, Ioi»r, li()-7() in the course of the lateral line. ])orsal small, about mid- way of the body, over the ventrals; anal rather long. N'ertebia- about s s]i:i wiiin^ in tin- soa. •1"H. O. tSi:aIoiflil9iy.s Avrrs. Olivaceous, sides silvery anl>otti Cope, I'm,-. Aim-r. Phil. Sue. Phila. L-'TO, 4'JO.) 481. O. tleaitex strindachner. Dark brown above ; sides silvery or golden; bead and body with dark points. Eye two-thirds length of snout. Teeth as in 0. e]H'rlanns and n. mordd.r; maxillary reaching posterior margin of eye, its length live times in distance from tip of lower jaw to dorsal. Height of dorsal half length ol head; heigbt of anal two sevenths. ITeadi; depth ~>L 1). 10; A. \:>: V. 8; Lat. 1.00; L. transv. 10. Port Clarence, Alaska, to north- ern China. (liftin, MSS.) induchuer, Sitzungsb. Kais. Akad. Wiss. AYicn, Ixi, 1^70, .— IIYPOJIESUS Smelts. 1. Pinr. Acad. Nut. Sci. I'liila. Ido2, 1C,'.): type .Iri/i ntuin pri-Hixa (Ird.) Dody rather elong.;':'. modej-ately coni|>ressed, eovei'ed with thin scales of modei-ate si/.e. Head ratln-r pointed. Mouth moderate, formed as in Argyrosomus, the shoriish maxillai-y not extending <|iiite ((» midroadl\ eonvr\, lo\\er jaw projecting. Teeth minute, on jaws, vomer, palatines, pterygoids and tongue. N'entrals inserted directly under middle ol' dorsal, midway between eye and base of caudal. Ilranehiostegals (i-7. North I'acilie.. ('>-», below; .-'to;, middle; in allusion to the position of the \entrals.) . II. prcliosus (Qrd. ' -ill.— s,trf Light olivai-eous: a silvery band along the lateral line. Eye as long ,>nout, 1.1 in head. fins low, the longest dorsal ray .S in length, without caudal; jjcctorals scarcely reaching half way to ventrals, 7 46. SALMONID.E - ARGENTINA. 205 in length of body; ventrals not reaching vent, their length S£ in body. Head 4.1; depth 4;-. D. 10; A. 15; P. 14; V. 8; Lat. 1. 70. L. 12 inches. Pacific coast, from California northward; abundant, spawning in the surf. A very firm-fleshed and fat little fish, scarcely inferior to the eulachou. pretlosa Grd. Proc. Acacl. Nat. Sci. Phila. 1854, 155: Osmenis pretiosus Giranl, U. S. Pac. -E. E. Surv. Fisli. 324: Osments elongatus Ayres, Proc. Ac ad. Nat. Sci. Phila. 1854, 17.) 4§3. H. oQedus (Pallas) Giiuther. Darker. Fins higher, the longest dorsal ray 6 in length of body; pectorals reaching two-thirds the distance to root of ventrals, their length 5 in body ; ventrals G in length of body. Lat. 1. 56-60. Alaska and Kamtschatka, spawning in fresh-water ponds. (Bean, MSS.) (Salmo (Osmtrus) oUdits Pallas, Zoogr. Ross. As. iii, 391; Giinther, vi, 169, in part.) 144.— ARGENTINA Liumeus. Argentines. (Artedi; Linuseus, Syst. Nat. : type Argentina sphyr&na L.) Body oblong, covered with rather large cycloid scales, which are often rough with spinous points. Mouth small, the maxillaries very short, not reaching to the eye. Eye very large. Jaws toothless; an. arched series of minute teeth on the head of the vomer and on the fore part of the palatine; tongue typically, with a series of small curved teeth on each side. Dorsal fin short, in advance of the ventrals. Cau- dal fin deeply forked. Eggs small. Fishes of the deep waters of the North Atlantic and Mediterranean, never entering fresh waters. (Latin argentum, silver.) * Scales more or less rough. (Sllus Reiiihardt.*) 4§4. A. syB'tesisiaiEEl Goode &. Bean. Body compressed. Head not quite twice as long as deep. Snout nearly 3£ in head. Insertion of dorsal midway between snout and adi- pose fin; veutrals under last ray of dorsal. Scales very large, cycloid, covered with minute asperities; a median row of scales along the back and the beliy. Color olivaceous ; sides silvery. Head 4£; depth 5J. B. 6; D. 12; A. 13; V. 14; scales 3-60-4. L. 17 inches. Sable Island Bank, in deep water. (Goode & Bean, Proc. U. S. Nat. Mus. 1878, 2G1.) * Reiiihardt, Bemiirkn. til den Skaud. Ichtliyol.il: type Salmo sUtis Ascanius. (From the Norwegian name Tas-Sil, said to mean rough herring.) 20G CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 1.25.— S1YPC3A1L93IEDI2I7S c ..... V. le, I'm.-. 1'. S. Nat. MM-. L880, iii, -I-:'.: type//". oW;,7/. MLS (ioodr.) Doily sub-terete, covered with adherent rough-pectinate or ctenoid sc..les. .Mouth ralh'.-r lir-'e, the maxillary reaching to beyond front of orbit ; lov.vr ja\v projecting. 'iVetli on jaws, small, sharp; tongue smooth. Dorsal in front of ventrals. Otherwise, essentially as in Ari- t lint.. Deep sea. (:':, under the sea; i'> £')/"eaiis Gooile. Grayish, mottled with brown; scales metallic silvery. Body plump, terete. Maxillary broad and ilattened posteriorly, extending to front of pupil, its length 2;[ in head. Interorbital space broad, 4 times the diameter <:f eye. Scales arranged in regular transverse rows, overlap- ping in sach a manner as to resemble oblique plates on the sides. Lat- eral line prominent, straight. Insertion of dorsal midway between pee- torals and ventrals, or snout and adipose tin; pectorals long; ventrals under middle of dorsal; caudal forked. Head 4; depth 4. D. 11; A. 8; P. 17 or IS; V. 0 or 10; Lat. 1. 52. Deep sea, off the coast of llhode Island. (Goudu, Proc. U. S. Nat. Mus. 1880, 1<1.) 146.— COUEGOXUS Liimaius. White-fish. (Artcili; Liiiii;:-iis, Sysl. X:i!.: ty|>r CorcgontlS IdverettlS Ij.) Body oblong or elongate, compressed. Head more or less conic, com- pressed, the, form of the snout varying eonsidei-ably. Month small, the. maxillary short, not extendin-' beyond the orbit, with a well-developed .supplemental bone. Teeth extremely minute, if present. Scales laod- eraie. ! iiiu, cycloid, rat her h'rm. Dorsal tin moderate; caudal tin deeply for!ve) pyloric cu-ca. Ova small. Species about !<». in- habiliii- the clear lakes of Northern l-airope, Asia, and America, in Arc,], iv-ions descend i 11;;' to the sea. Most of them spawn in late fall or v. inter near the shore, at other seasons often frcquentm*; consider- able depths. The .uioup, as here defined, includes a number of sect ions characteri/.ed by minor modifications of .structure, some of which have. been considered a genera. It seems to us that the number of distinct species has been overest imat ed by previous writers, and that the tfCO- range of each one is much wider than Las hitherto been 46. SALMONID.E — COREGONUS. 297 generally supposed. The species are highly valued for food, the flesh being generally pale and of fine flavor. The coloration is very uni- form; bluish olivaceous above; the sides and below silvery. (*«/;/'/?> the temples; Y^'^I angle.) This genus may be subdivided as follows: * Lower jaw included ; premaxillaries broad, placed vertically or tlio lower edge turned inward. t Gill-rakers short, thickish, few in number; preorbital broad, wider tliau pupil; maxillary sbort aud rather broad, not reaching to the lino of the eye; the small supplementary bone mostly narrow aud sharply elliptical ; mouth very small (PuosoPiUM Milner) coticai, williamsoni, quadrilateral-is, kenniootti. tt Gill- rakers numerous, long, and slender; preorbital long and narrow; maxillary comparatively loug, the supplemental bone ovate. (CoiJEGONUS.) t Tongue too; bless, or nearly so; back elevated clupeiformis. Jt Tongue with about three scries of small teeth; body elongate, compressed. Idbradoricus. tit Tongue nearly toothless; back not elevated hoyi. ** Lower jaw projecting; premaxillaru's narrow, placed more or less horizontally. § Body elongate, snbfusiform; scales small, uniform, convex behind (ARGYKO- SOMCS Agassiz) merki, artcdi, niyripinnin. §§Body short, deep, compressed, shad-like; curve of the back similar to that of the belly ; scales large, larger forwards, rather closely imbricated, the posterior margin little convex ( ALLOSOMUS Jordan) tnUlbce. * Lower jaw included; preraaxillaries broad, placed vertically or turned inward. t Gill-rakers short, thickish, few in number; preorbital broad, wider than pupil; maxillary short and rather broad, not reaching to the line of the eye; the small supplementary bone mostly narrow and sharply elliptical ; mouth very small. (Prosopium* Miluer.) 4§6. C. COtaesii Miluer. — Chief 3f on nialn Wliite-fmli. Head narrowed anteriorly, the snout prolonged, pig-like, protruding beyond the mouth. Maxillary 4 iu head, barely reaching eye. Sub- orbital and snpraorbital wider than in the other species. Depth 41 in length; length of head about the same; body therefore elongate, not elevated nor much compressed. D. 12; A. 10; scales 8-88-7. Chief Mountain Lake, Montana, a tributary of the Saskatchawau. Very close to the next, if really different; the head and mouth larger in the single specimen known. (Miluer, Eept. U. S. Fish Com. 1872-'73, S3 : Prosopium couesi Miluer, in Jordan, Man. Vert. cd. 2, 362.) 487. C. wiflfllacmsoaaa Girard. — Eocky Mountain White-fish. Body oblong, rather deeper than in C. qu'idrilatcmlis, but little com- pressed. Head shortish, conic, the profile more abruptly decurved than in the others. Snout compressed and somewhat pointed at tip, •which is entirely below the level cf the eye. Maxillary short and very * Miluer, in Jordan Man. Yert. ed. 2, 331: type C. ij_uudrilati:raUs Rich, (-^ a mask; from the broad preorbital.) 208 CONTRIBUTIONS TO . NORTH AMERICAN ICHTHYOLOGY - IV. broad, reaching just about to the anterior margin of eye; therefore', apparently longer than in the next, owing to the shortness of the snout. Maxillary contained -I times in the length of the head ; mandible ."> times. .Month inferior. Eye lr| in head. Adipose tin very large, extending behind anal. Depth 1) in length ; head -l'-|. D. 11-14; A. 11; scales S-74 to 88-7. (.1 ill-rakers short and thick, shorter than pupil; ab/nit 111 below the angle. Clear streams and lakes from the Kocky Mount- ains to the Pacific; abundant in the Sierra Nevada. An excellent food-iish ; variable. l, 1'n.c. Acatl. Nat. Sci. IMiila. l^.jC), 13 J; Giiutlicr, vi, 137.) C. .\ in head. Head long, the snout compressed and bluntly pointed, its tip not below level of eye; profile not strongly de- curved. Preorbital wider than pupil. Mandible originating under mid- dle of eye, :>.'4 in head. Adipose lin small. (Jill-rakers short and stoutish, but rather longer than in C. icHlittiiiNoni. Head 5 in length ; depth 1 ;. D. 11; A. 10; scales 9-30 to 90-8. Color dark bluish above, silvery below. Lakes of New Hampshire, Upper (Ireat Lakes, northwestward to Alaska; abundant in cold, deep w-.ters. , Franklin's .lourn. \*\>'.\, 711 ; Ci'mtlirr, vi, 17;>: 1'rcscuii, AMI T. .Joimi. Sri. Arts \i, :;;•_'. i-r>i : Coregonua n&vw-angliw Giiuiher, vi,l~:i.) 489. €. keiitiicotti Miln.-.-, .Mss. .-j>. n»r. I'.ody oblong, elliptical, the back not greatly elevated. Head very short and deep, the snout bluntly dei-urved and not projecting, the depth of the head at the nape greater than the distance from the end of the snout to the operciilar margin. Mouth not inferior, the jaws almost equal : maxillary extremely short and broad, not quite reaching to the eye, its length .V. in head, its supplemental bone broad-ovate, broader than in rlii/H-ifonitix. dill rakers us in C. road. Coloi- pale, as in c!ii>>r{/'; depth :.;. live :\ in head. D. 11; A. 14; V. 11; scales 7-SO-S. I'.ehr- in-'s Sea to the north shore of Siberia, ascending rivers; lately obtained by Dr. iSean in Alaska. (Siilinii olupeoides I'.-ill.-i-, 7.««^r. K.I--;. Asi;it. iii, -lid; nuf ('IH-CI/IIIIIIH cliijKoiiicK I,a- c6pedc ; ( .iini her, vi, I'.l.'i. ) >i/., Lake Superior, l.'n. ",:','. I : type <'i,ri't/uiins fl/ijiiifonnii D.'Kax, not of y\'Hf\\iU,-.f'(iri'fji>nun (trtnli !,<• Sin-nr. (c./n'r/juf, silver; u<.l>j.ta, body.) 46. SALMONID^E - COREGONUS. 301 494. Co airfteslfi Lc Suenr. — Lake Herring; Cisco; Michigan Herring. Body elongate, compressed, not elevated. Head compressed, rather pointed. Mouth rather large, the maxillary reaching about to the middle of the pupil, about 3i in head; the mandible 2£ in head. Pre- orbital bone long and slender; suborbital broad; supraorbital nearly as long as eye, about 4 times as long as broad. Eye 4-5 in head. Gill-rakers very long and slender, as in dupea, as long as eye, 25-30 below the angle. Bluish black or greenish above; sides silvery; scales with dark specks. Fins mostly pale, the lower dusky tinged. Head 4J; depth 4^. D. 10; A. 12; scales 8-75 to 90-7. L. 12 inches. Great Lakes and northward to Alaska and Labrador; very abundant, usually frequenting shallow waters. In numerous small lakes in Indiana and Wisconsin (Geneva, Tippecanoe, Ocouomowoc, etc.) is the modified var. sisco (Argyrosomus sisco Jordan, Amer. Nat. 1875, 130), which lives in the deep waters, coming into shallower waters to spawn in December. (Coregonus artediJ-ie Snenr, Journ. Acatl. Nat. Sci. Phila. i, 231, 1818: Coregtmus clwpei- f or mis Giinther, vi, 193, and of nearly all authors, but not Sal mo diqn'ij'nrinia of Mitch- ill : Salrno (Cone/onus} harenrjus Richardson, Fauna Bor.-Atuer. iii, 210; Sal mo (Coreyo- •WMN) luddus Richardson, Fauna Bor.-Amer. iii, 207: Coreyonus lucidim Giinther, \i, 198: Coreyonus harenyus Giiuther, vi, 199.) 495. C. uigrrnpiDiMis (Gill) Jor. — Blue-fin; Black-fat. Body stout, fusiform, compressed. Head stout. Month large, the lower jaw projecting. Eye rather large, longer than snout, about 4 in head. Teeth very minute, but appreciable on prenraxillaries and tongue. Gill-rakers very numerous, long and slender. Color dark bluish above: sides silvery, with dark punctulations; fins all blue- black. Head 4J ; depth 3$. I). 10; A. 12; scales 9-88-7. L. 18 inches. Deep waters of Lake Michigan ; locally abundant. Larger 'than most of the other Coregoni. Known at once by tbe black fins. (Argyroaomus 'iiir/ripinms (Gill, MSS.) Milner, Rept. U. S. Fish Corn. 1872-73, 87, 1375; Jordan, Man. Vert. 275.) §§ Body short, deep, compressed, shad-like; curve of the back similar to that of the belly; scales lar^c, notably larger forwards, rather closely imbricated, the posterior margin little convex. (Allosomus Jordan.*) 496. C. tssSli&ce Rich.— Tullibce; "Mongrel White Fish". Body short, deep, compressed, shad-like, the dorsal and ventral curves similar. Caudal peduncle short and deep. Head conic, com- pressed, much as in C. nigri_pmnis. Mouth large, the rnaxillar}* as long 'Jordan, Man. Vert. ed. 2, 1878, 331: type Corerjonus tulUbee Rich, (a/l/lo?, other, different; dfc/./a, body.) 302 coNTRinrTioxs TO NORTH AMERICAN ICHTHYOLOGY — iv. as the eye. extending past tlic front of the pupil, its supplemental bone narrowly ovate, with prolonged joint; jaws equal when closed. Kye large, as long as snout, 1.1 in head. Preorbital narrow: snpraorliital elongate, rectangular. Scales anteriorly considerably enlarged, their diameter hall' larger than the diameter of those on the caudal peduncle. Color bluish above; sides white, punctate with tine dots; each scale with a silvery area, these forming a series of distinct longitudinal stripes. I Tead 4; depth 3. D. 11 ; A. 11; scales 8-74-7. L. 18 inches. Great Lakes and northward. A handsome and well-marked species. (talma (Coregonnx) InJIihcc Ilirli. FMUIKI I5or.-Anior. iii, 201, 183IJ; Giiuthcr, vi, 199: ArgyroxoniHs tullibec Jorduu, Man. Yrrl. :>(51.) 147.— TIIYMAtLUS Cnvier. Graylings. (Cuvii-r. Ur^iii- Amin. oil. 2, ii, 1^9: type Salmo thymaUits L.) Body oblong, compressed, little elevated. Head rather short. Month moderate, terminal, the short maxillary extending past the middle of the large eye, but not to its posterior margin. Teeth slender and sparse on the maxillaries, premaxillaries, and lower jaw; vomer short, with a small patch of teeth; teeth on the palatines; tongue toothless, or nearly so. dill-openings wide. Branchiostegals 7 or 8. dill-rakers short and rather stilt'. Suborbital and preorbital bones narrow. Scales small and loose, 7.~>-100 in the course of the lateral line. Dorsal lin very long and high, mostly in advance of the ventrals, of about L't) rays: adipose I'm small; caudal fin forked ; anal fin small, of 10-15 rays. Coloration brilliant, the dorsal with red or blue spots. Pseu- dobranehia- well developed. Air-bladder very large. Pylorie append- ages about \~>. neantiful lishes of the fresh waters of northern regions.' (^•'-//.////.»<-, the ( 1 reek name of the Grayling, the lish having the odor of ' thyme — n:^ui-.] 497. T. si^llifrr li'irlnmlsim. — Amcrlcnn (I j llody elongate, compressed, highest under the anterior portion of the dorsal. Head rather shoi t, snbeonic, com]»ressed, its uppei- out line eon- tinuoiis nith anterior curve of the back. ]\Iouth moderate, the maxil- lary extending to below the middle of the eye: jaws about equal. Tongue, in the young, \\ ith teeth v, liicli are usually absent in the adult. K\e ipiile lai-gc, about .'5 in head, rather longer than snout, about equal to the i.iterorbital space. Scales moderate, easily detached. Lateral 46. SALMONID.E THYMALLUS. 303 line nearly straight. A small bare space behind isthmus. Dorsal fin long and high, its length rather greater than the depth of body, its height varying, greatest in the males; adipose fin rather small; anal fin small. Gill-rakers slender, short, about 11 below the angle. Color- ation brilliant, (in var. tricolor) purplish gray; young silvery; sides of head with bright bluish and bronze reflections; sides of body with small, black, irregular spots, most numerous posteriorly in young speci- mens; ventral fins ornate, dusky, with diagonal rose-colored lines; dor- sal with a black line along its base, then a rose-colored one, then a blackish one, then rose-colored, blackish, and rose-colored, the last stripe continued as a row of spots ; above these is a row of dusky-green spots, then a row of minute rose-colored spots, then a broad dusky area, the middle part of the fin tipped with rose; anal and adipose fins dusky; central rays of caudal pink, outer rays dusky. Head 4f ; depth 4§. D. 20; A. 11; scales 8-90-9. L. 18 inches. Northern Michigan to Montana, northward to Alaska and the Arctic Ocean; abounding in clear, cold streams in suitable locations. Professor Milner (Kept. U. S. Fish Com. 1872-'73, 740, et seq.) recognizes three distinct species, which seem to us rather as varieties of one species. These are — • Var. sigaaifea* Rich. From British America and Alaska. Has the scales smaller, (Lat. 1. 98), the maxillary shorter, and the head rather less than one-fifth the length ; the dorsal rays are perhaps more numerous, and the fin in the males much higher. (Coregonus signifer Rich. Franklin's Journ. 1823, 711: Salrno (Tliymalltis~) sirjnifer Rich. Fauna Bor.-Amer. iii, 190; Giinther, vi, 202; Milner, Rept. U. S. Fish Coin. 1872^-73, 738.) Var. tricolor Cope. — Michigan Grayling. From various streams in the northern part of the southern peninsula of Michigan. Has a longer head than the preceding, forming a little more than one-fifth the length, and the scales larger, 90-92 in the lat- eral line. (Tlnjmallus tricolor Cope, Proc. Acad. Nat. Sci. Phila. 1865,80: Tliymallm tricolor Giiuther, vi, 201 : Tlujmallus tricolor Milner, Rept. U. S. Fish. Com. 1872-73, 739, and of late writers on angling generally.) Var. nioaitaiaias Milner. — Montana Grayling. From the headwaters of the Missouri. Similar to tricolor, but has the body deeper, the depth being about 4£ in the length. (Thymallus montanus Milner, Rept. U. S. Fish Com. 1872-73, 741, 1874.) 304 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 119.— STE\TO»US Richardson. ^nconnus. (Liiciolrutta Giiiither.) (Richardson: type Salmo mficl:i'n:ii Ricli.) I3o;ly ratlu-r elongate, little compressed. Head long, the cleft of the mouth \viile. Maxillary long', broad, lanceolate, extending far backward, lower jaw projecting much beyond the upper. Dentition very feeble, the teeth extremely small; maxillary toothless; voiner, palatines, and tongue with narrow bauds of minute villiform teeth. Gill-rakers rigid, awl-shaped, rough interiorly. Brunehiostegals 10. Pyloric cceca in great number. Dorsal fin moderate, over ventral* ; anal rather long; caudal Corked. Scales moderate. Coloration silvery. Migratory trout of large size, inhabiting the streams of Arctic America and Asia. (•77^0?, narrow; onnb-, tooth.) 498. S. nriaelicazai Richardson. — Inconnu. Body elongate, subterete. Head long and compressed, with flattened vertex. Eye moderate. Preopercle much curved. Dorsal tin nearer caudal than snout. Bluish above; sides silvery, as in the Corcyoni. Head :\\. B. 10; D. 1,°,; A. 15; 'scales 11-100-10. Mackenzie's Hiver and its tributaries. (S(ilni') in-n:ki-n:ii Richardson, Franklin's Journ. 1823, 707: Luciolrutta mackenziei Giiuthcr, vi, 1(34.) 1 19.— OXCOESEI VWCEIUS Surkl.-y Pacific Xalmons. \!rv. Ann. Lyr. Nat. Hi-4. X. Y. 1861, :>H: type Sal mo scouleri Rich.) Body elongate, subi'iisit'onn or compressed. Mouth wide, the maxil- lary long, lanceolate, usually extending beyond the eye; jaws with moderate teeth, which become in the adult male enormously enlarged in front. Yomer long and narrow, Hat, with a series of teeth both on the head and the shaft, Hie latter series eomparat ively short and weak; palatines with a series of teeth; tongue with a marginal series on each s:de: teeth oa Yomer and tongue often lost with age: no teeth on the liyoid bone, Ilranehioslegals more or less increased in number. Scales modei-a!e or small. Dorsal I'm moderate; anal fin comparatively elon- gate, of I l-iM rays. 1'ylorie appendages in increased number. (Jill- r.ikers rather numerous. Ova large. Sexual peculiarities very strongly developed; the snout in the adult males in summer and fall greatly distorted; the'premaxillaries prolonged, hooking over the lower jaw, which in turn is greatly elongate and somewhat hooked at tip; tine 46. SALMONIDJ2 ONCOEHYNCHUS. 305 teeth on these bones also greatly enlarged. The body becomes deep and compressed ; a fleshy hump is developed before the dorsal fin, and the scales of the back become imbedded in the flesh. The flesh, which is red and rich in spring, becomes dry and poor. Salmon, mostly of large size, ascending the rivers tributary to the North Pacific in North America and Asia, spawning in the fall. Only five species are certainly known, (o'^o?, hook; p^r/.0"^ snout.) The species may be divided as follows : * Gill-rakers comparatively short and few (20 to 25 in number). a. Scales very small, more than 200 in a longitudinal series gorbuscha. aa. Scales medium, about 145 (138-155) in a longitudinal series; pyloric cceca about 150. 1). Anal rays 13 or 14 ; black spots small or obsolete. ; B. 13-14 Tccta* bb. Anal rays about 16; back and upper fins with black spots ; B. 15-19.. cliouicha. aaa. Scales comparatively large, about 130 (125-135) in a longitudinal series ; pyloric cceca 50-80 kisutch. ** Gill-rakers comparatively long and numerous (30-40 in number) ; scales large ; lat. 1. about 130 nerka. * Gill-rakers comparatively short and few (20-25 in number). a. Scales very small, more than 200 in a longitudinal series. 499. O. gorHJUScBaa ( Walb.)- Gill & Jordan. — Humpback Salmon; Haildo; Holia; Gorbusclia; Dog Salmon (Alaska). Color bluish ; sides silvery ; back posteriorly, adipose fin, and tail with numerous black spots; fall males red, more or less blotched with brownish. Body rather slender, in the female plump and symmetrical, in the fall males very thin and compressed, with the fleshy dorsal hump much developed and the jaws much elongated, strongly hooked, and with extravagant canines in front.** Ventral appendage half the length of the fin. B. 11-12. Gill-rakers 13 + 15. A. (developed rays) 15 ; D. 11 ; scales 215 (210-240), those of the lateral line larger, 170. Pyloric cosca very slender, about 180. Weight 3-6 pounds. Pacific coast and rivers of North America and Asia from Oregon northward; not rare; occasionally taken in the Sacramento. Known at once by the very small size of the scales. (Salmo gorbuscha Walbaum, Artedi Pise. 1792, G9: Salmo proteus Pallas, Zoogr. Ross. Asiat. iii, 37G : Salmo gibber Bloch & Schneider, 409 : Oncorhynchus proteus Giinther, vi, 157 : Salmo proteus Suckley, Mouogr. Salmo, 97 ; Jordan, Proc. U. S. Nat. Mus. i, 71, 1878: Salmo scouleri Rich. Fauna Bor.-Amer. iii, 158. Oncorhynchus sco u leri Giinther, vi, 158.) aa. Scales medium, about 145 (138-155) in a longitudinal series; pyloric cceca about 150. 1). Anal rays 13 or 14 ; black spots small or obsolete. 500. O. liela (Walbaum) Gill & Jordan. — Dog Salmon; Hay-bo; Le Kai Salmon. Dusky above; sides paler, little lustrous; back and sides with no Bull. Nat. Ms. No. 16 20 30G CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. defined spots, but only fine spccklings, which are often entirely obso- lete: head dusky, scarcely any metallic lustre oil bead or tail; caudal dusky, plain, or very finely maculate, its edge usually distinctly black- ish; tins all mostly blackish, especially in males; breeding males generally blackish above, with sides brick-red, oiteu barred or mottled. General form of the Quiuiiat, but the head proportionately longer, more depressed and pike-like ; the preoperclc more broadly convex behind, and the max- illary extending considerably beyond eye. Gill-rakers lew, coarse, and stout, as in the Quinuat. Accessory pectoral scale short, not half the len- tli of Jin. Head 4; depth 4. D. 0; A. 13-14; scales about 28-150- 30; B. 13 or 14, rather broad; gill-rakers 0 -f 15; pyloric coeca 140-1S5; weight about IL> pounds. San Francisco to Kamtschatka, ascending all streams in the fall, and spawning at no great distance from the sea; abundant in IJehriug's Straits. At the time of its run the males of this species are much distorted and the flesh has little value. (Salmo keta vel Kayko Walbautn, Artedl Pise., 1792, 72: Salmo kcta vel Eayko Bloch & Schneider, 1*01, 407: Salmo lagocephalus Pallas, Zoogr. Ross. Asiat. iii, :!72, 1811-'31 : ,^11 lino cunt* iSuckley, Arm. Lye. Nat. Hist. N. Y. 1858, 9, and Monogr. Salmo, 101: On- corhynchus lagocephalus Giiuther, vi, 161.) bb. Anal rays about 16 ; back and upper fins with black spots. 5O1. O. cDiouicIia (Walb.) J. & G. — Quinnat Salmon; King Salmon; Columbia Sal- mon; Sacramento Salmon ; Chinnook Salmon ; TI/«- Salmon ; Fall Salmon (male) ; Spring Salmon ; Winter Salmon; Sair-kiccy ; Chouicha. Color dusky above, often tinged with olivaceous or bluish; sides and below silvery; head dark slaty, usually darker than the body and little spotted; back, dorsal fin, and tail usually profusely covered with round black spots (these are sometimes few, but very rarely altogether want- ing); sides of head and caudal fin with a peculiar metallic tin-colored lustre; male, about the spawning season (October) blackish, more or less tinged or blotched with dull red. Ilead conic, rather pointed in the females and spring males. Maxillary rather slender, the small eye behind its middle. Teeth small, longeron sides of lower jaw than in front: vomerine teeth very few and weak, disappearing in the males. In the males in late summer and fall, the jaws become elongate and distorted, and the anterior teeth much enlarged, as in the. related spe- cies. The body then becomes deeper, more compressed, and arched at the shoulders, and the color nearly black. Preopercle and op- erde st'on.uly convex. I'.ody comparatively robust, its depth greatest near its middle. Ycntrals inserted behind middle of dorsal, ventral appendage half the length of the I'm; caudal, as usual in this genus, strongly forked, on a rather slender caudal peduncle. Flesh red and 46. SALMONID.E ONCORHYNCHUS. 307 i rich in spring, becoming paler in the fall as the spawning season approaches. Head 4 ; depth 4. B. 15-10 to 18-19, the number on the two sides always unlike. D. 11 ; A. 10. Gill-rakers usually 9+14 (i. e.j 9 above the angle and 14 below). Pyloric coeca 140-185. Scales usually 27-140-29, the number in a longitudinal series varying from 140-155, and in California specimens occasionally as low as 135. Verte- brae GO. L. 30 inches. Usual weight in the Columbia Eiver 22 pounds, elsewhere 10-18 pounds, but individuals of 70-100 pounds have been taken. Ventura Eiver to Alaska and Northern Chiuaj ascending all large streams; especially abundant in the Columbia and Sacramento Eivers, where it is the principal salmon. Upwards of 30,000,000 pounds are now taken yearly in the Columbia Eiver. It ascends the large streams in spring and summer, moving up, without feeding, until the spawning season, by which time many of those which started first may have travelled more than a thousand miles. After spawning, most or all of those which have reached the upper waters perish from ex- haustion. It is by far the most valuable of our salmon. It has lately been introduced into many eastern streams. (Salmo tshawytscha* Walbaum, Artedi Pise. 1792, 71: Salmo oricntalis Pallas, Zoogr. Ross. Asiat. iii, 367, 1811-'31: Salmo qulnnat Rich. Fauna Bor.-Amer. iii, 219, and of writers generally: Oncorhynchus qulnnat Giiiither, vi, 153: Oncorhynchus oricntalis Giiuther, vi, 159: Oncorhynchus qulnnat Jordan, Proc. U. S. Nat. Mus. i, 69: Farlo aryyreus Girard, Acad. Nat. Sci. Phila. 1856, 218: Salmo quinnat, confluenf'iw, and aryyreus Suckley, Monogr. Salmo, 105, 109, 110: Salmo tschawytscha Blocli & Schneider, 1801,407.) aaa. Scales comparatively large, about 130 (125-135) in a longitudinal series; pyloric cceca 50-80. 502. O. kisutcUi (Walb.) Jor. & Gilb. — Silver Salmon; Kisutch; Skouriiz; Hoopid Salmon; Colio Salmon; Bielaya Ryba. Bluish green 5 sides silvery, with dark punctulations; no spots except a few rather obscure on top of head, back, dorsal fin, adipose fin, and the rudimentary upper rays of the caudal 5 rest of the caudal fin un- spotted; pectorals dusky tinged; anal with dusky edging; sides of head without the dark coloration seen in the Quinnat ; males mostly red in fall, and with the usual changes of form. Body rather elongate, com- pressed. Head short, exactly conical, terminating in a bluntly pointed snout, which is longer and broader than the lower jaw. Head shorter than in a young Quinnat of the same size. Interorbital space broad and strongly convex. Opercle and preopercle strongly convex behind ; the preopercle very broad, with the lower limb little developed. Cheeks * A barbarous spelling of the word "chouicha" which we have thought proper to simplify. •308 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. id. Eye quite small, much smaller than in young Quinnat of the same si/e. Suborbital very narrow, with a row of mucous pores along Mirface. Maxillary slender and narrow, but extending somewhat beyond the eye. Teetli very few and small, only two or three on the vomer; those on tongue very feeble. Gill-rakers 10+13, rather long and slender, nearly as long as eye, toothed. Fins small. Pectorals and ventrals short, the ventral appendage three-fifths the length of the tin: caudal strongly forked, on a slender peduncle. Head 4; depth 4. 15. 13-14. Pylorie cceca very few and large, C3 (45-80); scales 25-ll'T- L".». D. 10; A. 13-14 (developed rays). L. 15 inches. Weight 3-8 pounds. A small salmon, ascending streams in the fall to no great dis- tance. Abundant from San Francisco northward. 3almo Teiautch W&Va&wai, Artedi Pise. 1?!)^, 70: Sulmo kyvtttuch Blocli & Schneider, IH'1. -1(>7: Salmo xanyuittolaitiiH I'allas, Xougr. Ross. Asiat. iii, 37U: Oiicorliyiwhus san- t/iiiinilnitim ( liint In-r, vi, 160 : Oncjrhynchus lyraodon Glinther, vi, l.">r>, iii part: Salmo *<"»il. 1— ". i:'0.) ** Gill-rakrrs comparatively long and numerous (30 to 40 in number); scales large, in about 130 serit s. 5O3. O. Bicrka (Walbaum) Gill & Jordan. — nine-lack Salmon; Eal-fish; Prater's Hinr Salmon; Sugk-ey e Salmon ; Krasnaya Ityba. Color clear bright blue above; sides silvery, this hue overlying the, blue of the back; lower fins pale, upper dusky; no spots anywhere in adults in spring; the young with obscure black spots above; males deep crimson red in the fall; the fins blackish, the caudal then often speckled with black; young breeding males (u Kcnncrhjl^} often sharply spotted. Dody elliptical, rather slender. Head short, sharply conic, pointed, the lower jaw included. Maxillary rather thin and small, ex- tending beyond eye. Teetli all quite small, most of them freely mova- ble: vomer with about -ame species, with a^e. sex, and condition. The lins \ ary 1o a certain de- ice. The \ a rial ion in the number of rays in any ono genus (except OIK -orli ijnclm:- ) is inconsiderable, and of no value for specific distinction. Although some species appear to be distinguished by a comparatively low dorsal and anal tin, yet the proportion of the height of the-e lins to iheir length is a rather un- certain character. In most of the species the lin-ravs are longer during the stages of vth or development. Tin- caudal I'm especially undergoes changes with a^e. ipceimen^ "f all species have this tin more or less deeply excised, so that the of a species which h:n tin- caudal einargiuate throughout life is distin- d by a deeper ineiiion of the I'm from the young of a species which has it truncate in the yum;,' slate. The individuals of the same species do not all attain to maturity at the same si/e. 46. SALMONID.E SALMO. 311 Finally, to complete our enumeration of these variable characters, we must mention that in old males, during and after the spawning season, the skin on the back becomes thickened and spongy, so that the scales are quite invisible or hidden in the skin. After this cursory review of variable characters, we pass on to those which we have found to be constant in numbers of individuals, and in which it is difficult to perceive signs of modification due to external circumstances. Such characters, according to the views of the zoologists of the present age, are sufficient for the definition of species ; at all events, in every description they ought to be noticed, and the confused and unsatisfactory state of our knowledge of Sal- monoids is chielly caused by authors having paid attention to the more conspicuous but unreliable characters, and but rarely noted one of those which are enumerated here. 1. The form of the preoperculuni of the adult fish. 2. The width and strength of the maxillary of the adult fish. In young specimens and in females the maxillary is proportionately shorter than in the adult. 3. The size of the teeth, those of the preiuaxillaries excepted. 4. The arrangement and permanence of the voinerine teeth. 5. The development or absence of teeth ou the hyoid bone. In old examples these are often lost, and their absence in a species usually provided with them is not un- common. 6. The form of the caudal fin in specimens of a given size, age, or sexual develop- ment. 7. The size of the scales, as indicated by counting the number of transverse rows above the lateral line. The scales of the lateral line are always more or less enlarged or irregular and the number of scales should be ascertained higher up ; this is one of the most constant and valuable of all the specific characters. 8. A great development of the pectoral fins, when constant in a number of speci- mens from the same locality. 9. The number of vertebra}. 10. The number of pyloric cceca. 11. The number of gill-rakers. The species may be divided as follows : * Marine salmon, auadromous, with the vonierine teeth little developed, those on the shaft of the bone few and deciduous; scales large (Lat. 1. 120); caudal well forked, truncate in old individuals; no hyoid teeth; sexual differences strong; breeding males with the lower jaw hooked upwards, the upper jaw emarginate or perforate to receive its tip (SALMO) salar. ** Eiver salmon, not anadromous, with the vonierine teeth largely developed, those on the shaft of the bone numerous, persistent, in one zigzag row or two alter- nating rows; sexual differences not strongly marked, the male with the premaxillaries somewhat enlarged. (FARIO Valenciennes.) a. Hyoid bone entirely toothless. b. Scales large, 120-150 in a longitudinal series. c. Caudal fin forked irideus. cc. Caudal fin truncate »-. gairdneri. l)b. Scales small, 165-205 in a longitudinal series. d. Caudal fin truncate sjrilurus. aa. Hyoid bone with a narrow band of small teeth (often lost) ; scales small (lat. 1. 155 to 190) purpuratus. "Marine salmon, auadromous, with the vomerine teeth little developed, those on the shaft of the bone few and deciduous ; scales large (Lat. 1. 120) ; caudal fin well forked, truncate in old individuals ; no hyoid teeth ; sexual differences strong ; breeding males with the lower jaw hooked upwards, the upper jaw emargi- nate or perforate to receive its tip. (Salmo.) 312 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 5OI. S. s:tl:ir Linna-us. — Cunnuon Atlantic Salmon. Body moderately elongate, symmetrical, not greatly compressed. Head rather lo\v. Mouth moderate, the maxillary reaching just past the eye, its length '2.\-3 in head; iii young specimens the maxillary i- proportionately shorter. Preopercolum with a distinct lower limb, the angle rounded. Scales comparatively large, rather largest pos- teriorly, silvery and well imbrk-ated in the young, becoming imbed- ded in adult males. Coloration in the adult brownish above, the sides more or less silvery, with numerous black spots on sides of head, on body, and on fins-, and red patches along the sides in the males; young specimens (parrs) with about 11 dusky cross-bars, besides black spots and red patches, the color, as well as the form of the head and body, varying much with age, food, and condition; the black spots in the adult often X -shaped or XX -shaped. Head 4; depth 4. B. 11; D. 11; A. 9; scales 23-120-21; vertebne 60; pyloric eoeca about 05. Weight 15—40 pounds. Xorth Atlantic, ascending all suitable rivers in Northern Europe and the region north of Cape Cod; sometimes per- manently land-locked in lakes, where its habits and coloration (but no tangible specific characters) change somewhat, when it becomes (in America) var. scbago. One of the best known and most valued of food-fishes. (LiniiMMis, Syst. Nat. ; GiinllnT. \ i, 11, and of nearly all authors: SitJmoglorcri fJiranl, Proc. Acad. Nat. Sci. Phila. 1854,85: Stilnw svlntijo (.J Irani, Proc. Acad. Nat. Sci. Phila. 1853, 380; Sucklcy, Monogr. Saliuo, 143: Sulmo st-bayo and yloctri (iiinther, vi, 1515.) **River salmon, not anadromons, with tin- vomerine teeth largely developed, thostv on the shai'r of the bone numerous, persist rut, in one y.ig/ag row or two alternating rows; sexual dillerenees not strongly niarUed, tho males with the premaxillarics somewhat enlarged; llcsh often palo. (Fario Valenciennes*). a. Ilyoid Imne entirely toothless (tongue witli teeth as nau.il). b. Si'ales lar^e, in lv!U-ir>() .series. C. Caudal I'm 1'orked. />O->. S. hideiis (iilihons. — ('ulifiirnni Ilroolc Trout; Kainloic Trout. I'.ody eotnparati\cl\ short and dee]), compressed, varying consider- ably, and much more elongate in the males than in the females. Head short, convex, obtusely ridged above. Mouth smaller than in any other species of the genus, the rather broad maxillary scarcely reach- ing beyond the eye except in old males. Eye larger than in our other >pecie>, ."> In head. Yomerine teeth in two irregular series. Dorsal tin • Valenei. -lines. lliM. N.-it. PuN-;. \\i, •_»,'?: type I'nrin (irt/inli'iix Val. (Fario, a Latin name of tin- " Salmon Trout "; included species \\itli a single row of perma- nent teeth on the vomer; Sular, Val. 1. c. 1514, included thoae with two rows, a dis- tinction of no importance.) 46. SALMONID^E SALMO. 313 moderate ; caudal fiu distinctly though not strongly forked, more deeply incised than in any other of our species of Fario. Scales compraatively large. Coloration bluish above, the sides silvery; everywhere above profusely but irregularly spotted, the spots extending on the sides and on the vertical fins ; spots on caudal small 5 belly nearly plain; sea-run specimens nearly plain silvery; males with red lateral baud and blotches. Head 4; depth 3|. D. 11 ; A. 10; scales 21-135-20, varying considerably, the highest number noted being on the type of "Fario newlerrii", 33-146- 33. L. 24 inches. Weight J to 6 pounds. Streams west of the Sierra Nevada, from near the Mexican line (Rio San Luis Bey) to Oregon; very abundant, and subject to many variations in size, form, and color. (Gibbons, Proc. Cal. Acacl. Nat. Sci. 1855, 36; Giinther, vi, 119; Suckley, Monogr. Saliuo, 129; Jordan, Proc. U. S. Nat. Mas. i,75: Fario gairdneri Girard, U. S. Pac. R. R. Surv. Fish, x, 313 (not Salmo gairdneri Rich.): Fario newberrii Girard, Proc. Acacl. Nat. Sci. Pkila. 1858, 224 : Fario clarkii, Girard, Proc. Acad. Nat. Sci. Phila. 219 (not S. clarkii Ricb..): Salmo masoni Suckley, Monogr. Salino, 134.) cc. Caudal fin truncate (iu. the adult). 5O6. S. gaird.nei'i Rich. — Steel-head; Hard-head; Salmon Trout. Body rather stout, not very deep mesially, but with the caudal pe- duncle thick. Head comparatively short and rather slender, in the females small, in the males the jaws more or less prolonged ; maxillary rather narrow, the small eye nearly above its middle; lower jaw in- cluded ; upper jaw in males emarginate at tip and at junction of premax- illary. Teeth rather small, those on the voiner in two long, alternating series, which are about as long as the palatine series. Preopercle rather wide, with the lower limb short; opercle moderate. Gill-rakers short and thick, 8 + 12 (essentially as in our other species of Fario). Ventral appendage not half the length of the fiu. Tail wide, squarely truncate in the adult, somewhat emarginate in the young. Flesh rather pale. Bones much firmer than in the OncorhyncM. Color blue above; sides silvery; head, back, upper fins, and tail more or less densely cov- ered with black spots; belly usually unspotted ; males with colors height- ened, the back greenish; a broad flesh-colored lateral band, deep red on the opercles; fins not red; no red on the membrane of lower jaw; B. 12-11; D. 11; A. 12; scales 20-135-20; pyloric coeca 42; vertebra 38 + 20. L. 30 inches. Sacramento Eiver and northward. A large trout, abounding in the mouths of the rivers, reaching a weight of 20 pounds. It spawns later than the salmon, and is found in the rivers, spent, at the time of the spring salmon run. It is then nearly useless as food, but at other times similar in quality to other trout. (? Salmo mi/kiss Walbaum, Artedi, Pise. 1792, 59, apparently confused with S. purpur- atus: ? Salmo muikixi Bloch & Schneider, 419: Salmo purpuratus Giinther, vi, 116: Salmo 314 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. truiicalux Suckley, Ann. Lye. Nut. Hist. N. Y. 1838, 3: Salmo yainlncri Richardson, Fauna ISnr.-Amer. iii,22l: Sal mo in a longitudinal sevii s. (/. Caudal liu truncate or double-rounded, not at all forked in the adult. 5O7. S. spilliriis Cope. — Ilio Grande Trout. Body elongate. Head heavy, but proportionately short, its upper surface considerably decurved ; interorbital space transversely convex, obtusely cariuated; the head more convex thau in any other of our species. Mouth very large, the maxillary reaching far past the eye. Teeth on vomer in two distinct series. Dorsal fin low in front, high behind, the last ray more than two-thirds the height of the first; last ray of the anal rather long ; caudal with its middle rays about as long as the others. Profusely spotted; back and sides with round black spots, the spots most developed posteriorly, few on the head, most nu- merous on the caudal and adipose fin; sides with pale blotches. Head 3J; depth 4. D. 11; A. 10; scales 37-170-37. L. 30 inches. Upper Bio Grande and Basin of Utah, frequenting mountain streams. (Cope, Haydeii's Geol. Surv. Mont. 1871, 470, 1872; Jordan, PLOC. U. S. Nat. Mns. i, 74.) Var. g>lciiriticus (Cope) Jor. A more abundant and much more widely distributed form, having the head and mouth equally large, but the top of the head less convex, the median carina being more marked, especially in the young. The scales are definitely smaller (39-200-40) and the coloration is rather darker. This form abounds in all suitable streams from the Bio (irande, through the Basin of Utah. Specimens intermediate between and pli'itrlticm occur. ii pltiii-itirnx Cop'1, Ilavden's Gcol. Surv. Mont. 1871, 471, 1872; Jordan, Proc. . Nat. Mus. i, 74, lo7H.) aa. Hyoid lionc with a narrow hand of small teeth (easily scraped oil' and very often naturally deciduous, especially in old examples). 5OK. S. ]>liri»lir:itus I'allas. — V,,I,Hur, 1-7.-'.) 151.— SALVE JLIi\US Kichanlson. GluvrrB. (Ilaionc DrICay: I'liihln Knpp.) (Nilsson; Kii-lianlson, Fauna I'.ur.-A r. iii, 170, ISM: t\|ic Sulmo xulccHnitii L.) Body moderately elongate. .Mouth large, or small. Teeth of jaws, palatines, :ind tongue essentially as in >sW/m>, the hyoid patch present 46. SALMONID.E SALVELINUS. 317 or not. Yomcr boat-shaped, the sbaft much depressed, with or without raised crest, with teeth on the chevron and none directly on the shaft. Scales v;ry small, in 200-250 rows. Fins moderate, the caudal forked in the young, truncate in some species, in the adult. Sexual peculiari- ties not strongly marked, the males with the premaxillaries enlarged and a fleshy projection at the tip of the lower jaw. Coloration dark, with round crimson or gray spots, and the lower fins sometimes with marginal bands of black, reddish, and pale. Species numerous in the clear streams and lakes of the northern parts of both continents, some- times descending to the sea, where they lose their variegated colors and become nearly plain and silvery. The members of this genus are in general the smallest and handsomest of the trout. (SalvelinuSj an old name of the charr; allied to the German Sulbling, a little salmon.) * Vorner with a raised crest behind the chevron, free from the shaft ; the crest armed with teeth; hyoid teeth strong; lake trout, gray-spotted (Cristivomer* Gill & Jordan). 5O9. S. namaycush (Walb.) Goode.— MacUnaiv Trout; Great Lake Trout; Longe (Vermont)', Togue (Maine). Body elongate, covered with thin skin, there being no special devel- opment of fatty tissue. Head very long, its upper surface flattened. Mouth very large, the maxillary extending much beyond the eye, the head and jaws proportionately lengthened and pointed. Teeth very strong. Caudal fin well forked. Adipose fin small. General colora- tion dark gray, sometimes pale, sometimes almost black; everywhere with rounded paler spots, which are often reddish tinged ; head usually verrniculate above; dorsal and caudal reticulate with darker. Eye arge, 4£ in head. Maxillary nearly half the length of the head; interorbital space nearly J. Head 4J; depth 4. B. 11-12; D. 11; A. 11; Lat. 1. 185-205. L. 38 inches. Great Lake region and lakes of Northern New York, New Hampshire, and Maine, to Montana and northward; very abundant in the larger bodies of water; varying in form and color in the different lakes. (Salmo namaycusJiWalb. Artedi, Pise., 1792, 68: Salmo namaycush Gunther, vi, 123, and of authors generally : Salmo amethystimis Mitchill, Journ. Acad. Nat. Sci. Phila. 1818 410: Salmo confinis DeKay, N. Y. Fauna, Fish. 1842, 238: Salmo adarondacus Norris: Salmo toma Hamlin : Cristivomer namaycush Jordan, Man. Vert., ed. 2d, 359: Salmo siscowet Gunther vi, 123.) * Jordan, Man. Vert. ed. 2, 1878, 356 : type Salmo namaycush Walbaum. ( Crista, crest ; vomer, vomer.) 318 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. V:ir. sisco\V«'t (A-assi/.) J. it C*.—Si*<-'ide> of the body ; sides with traces of < lark bars; lower tins varie gated, as in N. /..iitintilix. Head ~>; depth .'». 1>. 10; A. 1). Lat. 1. 1>30; gill rakers about 1',-f 11. L. 11' inches. Smallest and handsomest of our trout, as \et known only from the Kangeley Lakes, in Western Maine. (,SV//,m/<»/""vs" (;ii:"il. 1'ior. Ar:i,|. N:it. S.-i. I'hila. L8i 1,963: XMI- Asiat. iii. :;."):;. l~ll-:;i: x citlltiriitK (Jiinther, vi. 14:?: Salmo spwstabUia Girsad, True. Aead. Nat. Sri. 1'hila. l-,'lli Snckley, Ann. Lye. Nat. Hist. N. V. 1861,313: >W///. .p.ni.ii. lonlii, ati'l i;imi>f>rlHi ( Mint her, vi, 1'Jl. 1 K 1 !'.»: Xalrcliiiix xjifrinhiHn .Ionian, Proc. U. S. Nat. Mns. i, ?'.i, 1-7- : Salmo tndcs Cope, Proc. Amor. Phil. Soc. Pliila. ls?:5: Sulnui bnirdii Snckley, Ann. L.M-. Nai. Hi.st. N. Y. 1^:11, :'>it:i: Sulmo bainlii (.iiinthcr, vi, 1^1; Salrc- linun buiidi Jordan, Proc. I". S. Nat. Mns. i, 8'2.) aa. Ilyoid ti-i-th wanting. 511. S. foiitiiiulis (Mitch.) Gill & Jor.— Brook Trout; Spcckh-d Trout. LJody oblong or elongate, moderately compressed, not much elevated. Head large, but not very long, the snout bluntish, the interorbital space rather broad. Mouth large, the maxillary reaching more or less beyond the eye. Eye large, usually somewhat above the line of the axis of the body. Caudal tin slightly lunate in the adult, foiked in the young; adipose fin small; pectoral and ventral fins not especially elongate. Red spots on the sides, rather smaller than the. pupil; back mostly without spots, more or less barred or mottled with dark olive or black; dorsal and caudal fins mottled or barred with darker: lower fins dusky, with a pule, usually orange band anteriorly, followed by a darker one; belly in the males often more or less red; sea-run individuals (S.canmlcn- •v/.s- Smith, the Canadian "Salmon Trout") are often nearly plain bright silvery; many local varieties distinguished by shades of color also occur. Head \.\: depth 44. D. 10; A. 0; scales .-JT-L'-'iO-IJO; gill-rakers about (5-fll. L. IS inches or less. The best known of our trout, abounding in all clear, cold streams from "Pennsylvania, to Dakota and northward to tin- A relic Circle, southward in the Alleghanies to the headwaters of the Savannah, Chattahooehee, Catawba, and French I.road. - -',/,„ Jnntiimlix Mitdi. Trans. Lit. A i'liil. Boo. X. Y. i, i:i.'.: Salmo fnnthnilh C.Vm- tlicr, vi, 1 .">•.', anil nf nearly all authors : Sulino cii>Hiilfiif hniii<;i* Sncklcy. Ann. Lye. Nat. HM. N. Y. !*<>!, :5]ii: Suliiin lui'l <H; .lorilan, Pi-oc. V. S. Nat. Mus. i, 81:1 Xalixv I.'ich. l''rankliii's .lonrn. 7(1 1.) .». S. hood! (\!\<-\i.) (Jill &. Jor. Kody rather elongat*-. .Maxillary rather strong, straight, extending to or beyond hind margin of eye. IVeopcrcle very short, with a very short lower limb. Pectoral not reaching half way to ventral; adipose " Tin- nominal species <-tinn called " Stimuli Troul". 46. SALMONIDJE SALVELINUS. 321 fin very small; caudal deeply forked. Body and caudal fin covered with round pale spots of moderate size. B. 12; D. 10; A. 9; Lat. 1. 185. Bootbia. (Giinther.) (Salmo hoodii Richardson, Ross, Voy. Nat. Hist. App. Iviii, and in Fauna Bor.-Amer. iii, 173: Salmo Jioodii Gunther, vi, 150.) 516. S. rossi (Rich.) J. & G. Olive-brown above, the dorsal and caudal similarly colored; belly red ; scattered red spots near th$ lateral line. Rather slender ; snout very obtuse; lower jaw remarkably long, with a knob at tip (male). About 30 teeth on the tongue. Conspicuous pores on the face bones posteriorly. Scales very small, imbedded. Head 5. B. 12-13 ; D. 13 ; A. 11; P. 14; V. 10. Arctic Ocean, about Boothia Felix. (Richardson.) An imperfectly known species. (Salmo rossii Richardson, Nat. Hist. App. Ross's Voy. Ivi: Salmo rossii Suckley, Monogr. Salmo, 120.) 517. §. nitidus (Rich.) Gill & Jor. Body somewhat elongate; head moderate; snout medium. Maxillary straight, strong, extending beyond the orbit in the male. Teeth mod- erate, 2 or 3 behind head, of vomer. Preopercle with the lower limb very distinct. Fins well developed; pectoral reaching scarcely half way to ventral; caudal fin forked. Head 5. B. 11; D. 11; A. 10; Lat. 1.215. Boothia. (Giinther.) Perhaps a form of 8. stagnalis. (Salmo nitidiis Richardson, Fauna Bor.-Amer. iii, 171, 183G: Salmo nitidus Gunther, vi, 150.) 518. S. stagoialis (Fabr.) Gill & Jor. Body elongate; head of moderate size. Snout elongate, pointed, with the lower jaw projecting beyond the upper in adult examples. Teeth small. Maxillary elongate, narrow, extending beyond the eye. Preopercle very short, with a very short lower limb. Opercle and pre- opercle very conspicuously and densely striated, the striae radiating from the base of each. Fins much developed, the dorsal much higher than long ; pectoral very long, reaching more than half way to veutrals, which are also very long; adipose fin very small; caudal well forked. D. 11; A. 10; Lat. 1. 210; B. 11; coeca, 41. Lakes of Greenland and Boothia Felix. (Gunther.) (Salmo stagnalis Fabricius, Fauna Grcenlandica, 1780, 175: Salmo alipes Richardson, Nat. Hist. App. Ross's Voy. Ivii, and Fauna Bor.-Amer. iii, 169 : Salmo alipes Gunther, vi, 149.) Bull. Nat. Mus. No. 1C 21 322 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. FAMILY XLVIL— PERCOPSID^. (The Trout Perches.} Body moderately elongate, somewhat compressed, the caudal pedun- cle long and slender. ITead conical, pointed, naked. Month small, horizontal; maxillary short, narrow, without supplemental bone, not reaching to the large eye ; margin o£ upper jaw formed by premaxilla- ries alone, which are short and not protractile. Teeth very small, villi- form on prcmaxillaries and lower jaw only. Tongue short, adherent. Gill-membranes separate, free from the isthmus. Pseudobranchire pres- ent. Branchiostegals 6. Gill-rakers short, tubercle-like. Opercle with entire edges. Lower limb of the prcopercle well developed, the angle nearly a right angle, its inner edge with a raised crest. Bones of the head cavernous, as in Acerina and Ericymba. Cranium, with a raised crest, which does not extend to the occiput. Scales moderate, rather thin, adherent, their edges strongly ctenoid. Lateral lino continuous. Dorsal short, median ; ventrals anterior, just in front of the dorsal, S-rayed; pectorals narrow, placed rather higher than usual 5 anal small; caudal forked; adipose fin present, 'small. Stomach siphoual, with about 10 well -developed pyloric cceca. Ova rather large, not fall- ing into the abdominal cavity before exclusion. Air-bladder present. Small fishes of the fresh waters of the cooler parts of America; a sin- gle genus, with probably but one species. The group is one of special interest, as it combines with ordinary Salmonoid characters the structure of the head and mouth of a Percoid, resembling notably the European genus Acerina. (I'crcopuidce Giinthcr, vi, 207.) 152.— PERCOPSIS Agassiz. Trout Perch. (A;,r.-i-M/, T.:iKc Superior, l-r,n, -j- 1 : type Peroopris gwtttthu Ag.) Characters of the genus included above. (-J/JXTJ, perch ; <; appear- ance.) 519. P. Kiitfatios Pale olivaceous, a sihery stripe along the lateral line, becoming ob- solete forwards: upper parts with obscure round dusky spots made of dark points. Head slender and conical. Mouth small, subinferior, maxillary not nearly reaching front of orbit. Caudal peduncle long and 48. AMBLYOPSID.E. 323 slender. Peritoneum silvery. Head 3£ in length ; depth about 4 J. D. 11 ; A. 8 ; Lat. 1. 50. L. G inches. Spawns in spring. Delaware Eiver to Kansas and northward ; abundant in the Great Lakes. One of our most remarkable fishes. (Agassiz, Lake Superior, 1850, 283; Giinther, vi, 207: ? Percopsis hammondi * Gill, Proc. Acad. Nat. Sci. Pliila. 1864, 151.) ORDER N.~ HAPLOMI. (The Haplomom Fishes.) ~No precoracoid arch. Parietal bones separated by the snpraoccipital. A symplectic. Opercular bones present. Anterior vertebra unaltered. Pharyngeal bones distinct, the superior directed forwards, three or four in number, the inferior not falciform. No interclavicles. Mouth with teeth. Air-bladder with a pneumatic duct. Ventral fins abdominal, rarely wanting; pectoral fins placed low; dorsal fin more or less pos- terior, usually without spines. Head and body usually with cycloid scales. No adipose fin. Species chiefly inhabiting fresh water. (6.-Xo6q, simple; ty/j»>?, shoulder; in allusion to the want of the precoracoid arch.) (Physostomi part (families Esocidte, Umbridce, Cypr'modontidce and Heteropygii) Giin- tlier, vi, vii.) ANALYSIS OF FAMILIES OF HAPLOMI. o. Margin of upper jaw formed by premaxillaries alone; ovoviviparons. b. Vent jugular; premaxillaries scarcely protractile AMBLYOPSID^S, 48. lib. Vent abdominal ; premaxillaries freely protractile CYPRINODOXTIDYE, 49. aa. Margin of upper jaw formed laterally by the niaxillaries; premaxillaries not pro- tractile. c. Jaws not produced ; teeth villiforrn, equal UMBRiDjE, 50. cc. Jaws produced ; teeth cardiform, unequal .* EsocnxE, 51. FAMILY XLVIIL— AMBLYOPSID^E. (TJie Blind-fishes.) Body moderately elongate, compressed behind. Head long, de- pressed. Mouth rather large, the lower jaw projecting; premaxilla- ries long, scarcely protractile, forming the entire margin of the upper jaw. Jaws and palatines with bands of slender villiform teeth. Bran- chiostegals about 6. Gill- rakers very short. Pseudobranchise con- cealed. Gill-membranes more or less completely joined to the isthmus. * Head larger, 3| in length, exclusive of caudal ; dorsal higher, the longest ray 4| in length ; anal higher, longest ray 6 in length ; pectoral equals height of dorsal ; ventral 5f in length, reaching vent, which is nearer snout than margin of caudal fin. Kansas. (Gill.) 324 COXTRIBTTIoys TO NORTH AMERICAN ICHTHYOLOGY IV. Head naked, tin- surface sometimes crossed by papillary ridges. I.ody with small cycloid scales, irregularly placed. No lateral line. Vent jugular, close behind the gill-openings. Ventral fins small or wanting; pcci orals moderate, inserted higher than in most soft-rayed fishes; dor- sal without spine, nearly opposite the anal; caudal truncate or rounded. i 'i anium without median crest. Stomach coecal, with one or two pyloric appendages. Air-bladder present. Ovary single. Some (and probably all) of the species are ovoviviparous. lu two of the genera the eyes are very rudimentary and hidden under the skin, and the body is translu- cent and colorless. Fishes of small size, living in subterranean streams and ditches of the Central and Southern United States. Three genera and four species are " all of the family yet known, but that others will be discovered, and the range of the present known species extended, is very probable. The ditches and small streams of the lowlands of our south- ern coast will undoubtedly be found to be the home of numerous indi- viduals, and perhaps of new species and genera, while the subterranean streams of the central portion of our country most likely contain other species." (Putnum.} (//(>/•»/)//'/;/ (iiintiuT. vii, 1, 2.) a. Eyes rudimentary, concealed : body colorless. /;. Ventral (ins present AMBLYOPSIS, 1 .'.:!. lih. Velllral lilis obsolete TVPHLICIITIIVS, l.")|. aa. K\ es developed ; body colored ; vent nils obsolete CiiOLOGASTEit, 155. 153.— AMBL,YOP§1S DoKay% (DeKay, New York Fauna, Fish. 1842, 187: type AmMyopsis spclams DeKay.) ! ACS rudimentary, concealed under the skin. Surface of head crossed by vertical tactile ridges, dill-membranes fully joined to isthmus. Ven- tral lius present, quite small, close to anal. Colorless fishes of small si/e, inhabiting the cave-streams in the limestone regions of the West- ern States. (-, obtuse; «Y'^j vision.) .V2O. A. S|M'l;rilS DelCay. Colorless. .Mouth comparatively large, the length of its cleft about eipial to base of dorsal. Pectorals reaching front of dorsal; caudal long, rather pointed. One p\ loric ciecnm. Head '.'> in length; depth II. !>.!•; A. S; V. I: P. 11. L. 5 inches. Subterranean streams of Kentucky and Indiana. (DeKay. \e\v York l-':iiiii:i. Fi-h. 1-7: < i ii :il her, vii.'J; rntnain, Anier. Nat. 1872, 30, ii'..) l.ll.-TVPIII.ICIITIIVS Cir..rd. (Ciranl. Pio-. Aead. Nat. Sei. 1'liila. l-.'i'.', f.J: type Ti/j>ltHpen-ular margin. Tin- caudal liu is dark In-own, wiih s -vcr.il veri ieal rows of \vhiie specks or Idotches running across the rays. The anterior part of the dorsal is similar in color, l»ut paler. Total length a trille over an ineli. A scale from the region mentioned hy rntnain is similar to that of ir/nxxizi, but with 5 orb' concentric lines and :5 radiating furrows. The specimen thus agrees with roriintiiH in position of eye and plan of markings, with (f;/«.sW;( in length of pectorals and siriicture of scales, is intermediate in length of head, and agrees with neither in color of caudal and dorsal and tint of middlo band, (I'orbcH, in lit. November -1, FAMILY XLIX.— CYPRINODONTID^E. (The Cyprinodonts.) Body oblong or moderately elongate, compressed behind, depressed forwards, covered with rat her large cycloid scales, which are adherent and regularly arranged. X'o lateral line. Head scaly, at least above. Mniitli terminal, small, the lower jaw usually projecting; margin of the upper jaw formed by the preinaxillaries only; premaxillaries strong, extremely protractile. Teeth incisor-like or villiform, sometimes present on the vomer, but usually in the jaws only; lower pharyngeals sepa- rate, with canliform teeth. Gill-membranes somewhat connected, free from isthmus; gill-rakers very short, thick. Branchiostegals 4-6. r.-endobranehite none. Dorsal flu single, inserted posteriorly, of soft rays only, rarely with a single spine or a rudimentary spinous dorsal; caudal iin not forked: ventral (ins abdominal, rarely wanting; pectoral lins inserted low; no adipose Iin. Stomach not ccecal, without pyloric appendages. A ir-bladder simple, often wanting. Sexes usually unlike, the tins being largest in the males. Most or all are ovoviviparous, the young well developed at time of birth. I-Ycsh-water fishes of South- ern Fjirojie, Asia, Africa, and America, some of them occurring in bays and arms of the sea. They are most ly of small si/.e, and the species are very clinical! of determination. (J-enera .'JO; species about 1-10. (('i/liriniiilititliili:' (liinlher, vi. 'J'.U-:;.">(;.) NuTK. — In the following analysis the genera known from Mexico an- also included, their name-, I.ein^ placed in it * Intestinal canal com para I i\ely short, lit I le convoluted ; teeth mostly lixcd ; dcntary hones firmly joined, (f'nntintrir.') a. Anal iin of the male not modified into an inl romil teni or^an. 6. Te.'th iiK-isor-like, notched; insert ion of dorsal nearly opposite vcntrals. (Cy- {iriiiixloiitin C. Teeth in a single series; hody short and deeji. rf. Dorsal ver\ IOIILT. with K'.-l- rays, the first spine-like. . . JoRDAXKLLA, 15G. dd. Dorsal short, of 10-11 rays, the lirst ray small ......... CYPIILNODON, 157. 49. CYPRINODONTID^E JORDANELLA. 327 66. Teeth Jill pointed ; ventrals present. (Fundnlincc.) e. Teeth in more than one scries ; air-bladder present. /. Dorsal fin comparatively large and well forward, its rays usually more than 11 and the first ray usually in front of the anal FUNDULUS, 158. ff. Dorsal fin small and posteriorly placed, its rays usually 7-10, and the first ray generally behind the front of the anal. g. Anal fin small ZYGONECTES, 159. cc. Teeth in one series; dorsal fin in advauce of anal. /;. Dorsal and anal fins short, each with 9-13 rays LUCANIA, 160. lili. Dorsal and anal fins long, each with more than 20 rays. Glrardin ichtliys. aa. Anal fin of the male advanced, modified into a sword-shaped, intronrittent organ. (Anablepince.) i. Eye normal («'. e., not divided into two portions by a horizontal partition) ; teeth in bands. j. Jaws not produced. k. Dorsal fin long, 14-16 rays Pseudoxiphophorus. kk. Dorsal fin short, 9-10 rays GAMBUSIA, 161. jj. Jaws much produced Eelonesox. "* Intestinal canal elongate, with numerous convolutions ; anal fin in the male usually modified into an iutroniittent organ ; deutary bones loosely joined ; teeth movable. (Hmnophagce.) L Teeth all pointed. (FcecUiinw.) m. Teeth in more than one row ; dorsal more or less in advance of the anal, greatly enlarged in the male. n. Caudal fin in the male with its lower lobe much pro- duced ; dorsal fin long, of 12 or more rays. Xiphophorus. nn. Caudal fin normal, alike in the two sexes. o. Dorsal fin long, of more than 12 r.iys. MOLLIENESIA, 162. oo. Dorsal fin short, of less than 12 rays . . PCECILIA, 163. mm. Teeth in a single series ; dorsal fin short. p. Dorsal inserted in advance of anal. Platypcccilus. pp. Dorsal inserted posteriorly to anal. GIRARDIXUS, 164. 11. Teeth incisor-like, tricuspid ( Goodemw} Goodea. 156.— JORB> AMELIA Goode & Bean. (Goode & Bean, Proc. U. S. Nat Mus. ii, 177, 1879: type Jordanella floridce G. & B.) Body short, deep, compressed. Head short. Month small, very pro- tractile, the lower jaw the longer; lips full. Jaws each with a single series of rather broad, wedge-shaped, incisor teeth, the cutting edge of which is deeply notched, usually trifid. Branch iostegals 5. Dorsal flu elongate, the number of rays 16-18, the first being a robust spine; in- sertion of dorsal fin behind ventrals, in advance of front of anal, its last ray behind the last of anal ; dorsal fin not greatly elevated. Anal fin shorter and smaller, similar in both sexes; ventral fins small, with a scale at base; caudal fin rounded ; pectorals short and small. Intes- 328 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. final canal rather Ionic: three times length of body. Sexes similar. (Dedicated to David S. Jordan.) .VJ1. J. lloridir Cm.iic A. r.«-.-in. liody ovate, short and deep, with elevated hack, deep candal pe- duncle, and sleep profile. Head moderate, flat and broad between the eyes, its profile less steep than that of the back. Kyes lar^e. ,"..',-i in head. Month small, anterior, the lower jaw projecting. Scales mod- erate, the humeral scale not much enlarged. J)orsal fin inserted mid- way between snout and base of candal, its first ray robust and spine- like, grooved behind, longer than the diameter of the eye, and about as lii-h as the succeeding soft rays. Fins all rather low, the ventrals reaching just past the vent. Scales with strong concentric stria-. Color olivaceous; sides orange or brassy, with a broad steely-blue stupe aloni;- each series of scales; 4 or 5 vairue, dilt'use, black ver- tical bars, most distinct in the young, nearly obsolete in the adult: a lar.ue, difl'use, dusky blotch on the sides, below the dorsal spine; fins mostly dark, the dorsal barred or speckled in the males, nearly plain in the females, sometimes a dusky blotch on its last rays; body and tins everywhere finely punctnlate with black; a dark bar below eye. Bead 3£; depth 2-24. D. I, 1<>, or 1, 17; A. I, 11, to I, i:;: Lat. 1. L>5-i'7: L. transv. 11 or lli. L. li inches. Streams of Central and Eastern Florida; abundant. The above description from specimens taken by Dr. .J. A. Ilenshall in San Sebastian Itiver. The original types were from Lake Monroe. Herbivorous, at least in part. (Goo.lr & li.-an, Proc. U. S. Nat. Mus. ii, 117, LST'J.) 157,— CYPKINODON Lac<5pode. (Lrbla* Cuvior. ) (L:ii-('|ii-ilc, Hist. Nut. I'i»is«;. v, •J-i'i. IHI:: ; type < 'i/i>rinn ?, carp; %>5, 389: Cyprinodfiii bvriniis Girard, U. S. Mex. B.mml. Surv. Iclith. 07: Cyprinodon borinus Giiuther, vi, 307: Cyprinodon e.dmius Girard, Proc. Acad. Nat. Sci. Phila. 1859, 158.) 526. C. &iE>bo§B5S Baird & Girard. Similar to the preceding, but the body still deeper and the back and fins still more elevated ; the scales apparently somewhat smaller ; anal much smaller than dorsal ; coloration similar to that of 0. variegatus. Head 2^; depth 1*. D. 10; A. 11; Lat. 1. 28; L. transv. 14. Indi- anola, Texas. (Girard.) (Band & Girard, Proc, Acad. Nat. Sci. Phila. 1853, 390; Girard, U. S. Mex, Bound. Surv. Ichth. (i7.) 527. C. EatafasciaiMS Gariuan. Form and dentition of C. gibbosus. Black caudal band much wider; a light baud from middle of opercle to lower half of caudal ; a dark band above this, separated by a narrower band of light from the dark olive of the back ; silvery color of belly separated from the light band on the flanks by a short baud of brown; fins clouded with brown; cau- dal with a narrow dark band across its base and a broad one across its extremity. Head 4 in total length; depth 3. B. 12; A. 11; V. G; P. 14; Lat. 1. 30; L. transv. 11. Parras, Coahuila, Mex. (Garman.) (Garman, Bull. Mus. Cotup. Zool. viii, No. 3, 92, 1881.) 52§. C. elegasa«* Baird & Girard. Body more elongate than in any of the preceding; the upper outline of the head less depressed, so that the profile is continuous; fins low, the dorsal quite small; its rays scarcely extending to the beginning of 330 covruinrTioxs TO NORTH AMEIIICAN ICHTHYOLOGY — iv. the caudal peduncle. Bluish black, sides somewhat variegated \vith darker, the males somewhat spotted; edge of caudal I'm black in the male; a black patch ou last rays of dorsal in the female. Head 3i ; depth '2 to :i. D. 11; A. !«': scales iM-lil. L. L'.V inches. Eio Grande. (Oirard.) (Baird A tJininl. J'n.r. Arad. Nat. Sri. I'hila. 1853, 389; Girard, U. S. M.-x. I'.oimd. Surv. I, lull. <;;;.) C. ealifo&'Eigciisis Grd. " It may be easily distinguished (Vein its congeners in North America, by its uniform system of coloration \vhich exhibits neither bauds nor spots. The general aspect of its body is rather short and deep, except in the young which assume a subfusifonu appearance. The largest s]>ecimeiis which we have examined measure about an inch and a half in total length. The head constitutes the fourth of the length, the snout being abruptly rounded off. The mouth is, proportionally speaking, of medium si/e, whilst the eye is rather small, subcircular ; its diameter entering three times and a half in the length of the side of the head. The dorsal lilt is higher than long, and superiorly convex ; its interior margin being nearer the apex of the snout than the posterior margin of the caudal. The anal lin is nearly as large as the dorsal, deeper than long, inl'eriorly convex, particularly upon its posterior half. The caudal is posteriorly truncated, nearly linear. The ventrals are small, project beyond the vent and reach almost the origin of the anal. The pectorals are well developed, rounded off, extending as far as a vertical linedraun at the insertion of the ventrals. The rays are: D. 10 + 1; A. 11; C. 3, 1, S, S, 1, ;{; V. 7; P. 11*. The scales are much deeper than long, anteriorly truncated and posteriorly rounded oil' or convex. The color is olivaceous brown, with a dark grayish tint along the back, and a golden tint beneath." ((iirnnt.) San Diego, California. . I'ior. Arad. \;,|. Sri. I'hila, 1 ~.V.I. I.',?.) .'»:;<>. < . m&culariiu Baird d *.V'., :5S'J; (iirard, U. S. Mr\. Uiiiuid. Surv. I. •lull. 6G . <'. r:ir|>io I iiiuiln-r. Slenderer than ('. rnririjiii ux ; humeral scale scarcely larger than the others; dorsal liii inserted slightly behind ventrals; eye 3£ in head, a 49. CYPRINODONTID.E - FUNDULUS. 331 little shorter than snout; olivaceous, silvery below. Head 3; depth 2£. D. 11; A. 10; scales 25-10. "America." (Giinther.) (Giiuther, vi, 306.) 15§.— FUrVDli:LtJS Lac6pede. Killifislies. (Hydrargyra Lace~pede: Xenisma Jordan.) (Lacepede, Hist. Nat. Poiss. v, 37, 1803 : type Fundulus mudfish Lace"pede = Colitis heteroclita L. ) Body rather elongate, little elevated, compressed behind. Mouth moderate. Jaws, each with two or more series of pointed teeth, usually forming a narrow band. Bones of the maudiule firmly united. Scales moderate. Branchiostegals 4-G. Preopercle, preorbital, and mandi- ble with mucous pores. Dorsal and anal fins similar, moderately devel- oped or rather large, the dorsal usually inserted in front of the anal. Ventrals well developed. Air-bladder present. Sexes differing in color, size, and development of the fins, the anal fin in the male nor- mal. Intestinal canal short. Species very numerous, mostly Ameri- can, inhabiting fresh waters and arms of the sea. They are the largest in size of the Cyprinodonts, and some of them are very brightly colored. (Latin fundus, bottom, the supposed abode of the "Fundulus mudfish.") The species may be divided as follpws: * Dorsal fin beginning in advance of anal. t Branchiostegals 6. (HYDRARGYRA Lace"p&de.) a. Males with dark cross-bars and a black dorsal spot ; females with longitudinal stripes ........................................ majalis, swampinus. aa. Males and females with dark cross-bars ............ ............ similis, zebra. aaa. Males without sharp markings, the scales rough in spring ; females plain. parmpinnis. tt Branchiostegals 5. (FuNDULL'S.) b. Dorsal long, its rays 16 or 17 ; body with round black spots, at least in the male ................................................... seminolis. bb. Dorsal moderate, its rays 10-14. c. Scales rather small, 40 or more in a longitudinal series. d. Cross-bars if present, black ...................... diaplianus, confluenius. dd. Cross-bars silvery. e. Teeth small, in a band ...................................... menona. ee. Teeth in about two series, the outer enlarged ................. adinia. cc. Scales large, less than 40 in a longitudinal series. /. Males with 9 or 10 silvery cross-bars ; females with black bars ; fins plain .............................................. nigrofasciatus. ff. Males with silvery spots and bars ; females nearly plain olivaceous, or barred with black ................................. heteroclitus. ** Dorsal fin beginning above or slightly behind anal; fins high. (XENISMA Jor.) (j. Branchiostegals 5 ; spots in regular series ............... catenatus. gg. Brauchiostegals 4 ; spots irregular ...................... stdlifer. 332 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. * Dorsal I'm l>i'^iinmii; in advanrr of anal. t Branchiostegals 6. (H--liars ; frmalrs with longitudinal stripes. 532. F. Ilia jalis (Walli.) (itlir.— KiUifiJi : M«uji*h ; llo.ly oblong, scan-fly elevated, little compressed; liead rather pro- longed anteriorly, the mouth small, terminal and very oblique; scales rather large; dorsal lin moderate; anal liu very high in the males, mod- erate in the females; ventrals long in the males, reaching past front of anal ; e\e moderate, shorter than snout and than intcrorbital space; a slight angle formed by the profile, iu front of the eye, due to the greater tl.it telling of the snout. Male fishes dark olivaceous above; sides sil- very or somewhat golden, with about a dozen broad transverse bars of the color of the back; posterior part of dorsal fin with a black patch; fins yellowish or pale. Females olivaceous above, white below, a narrow black band along sides about on the level of the eye and as wide as the pupil; below this two similar black bars anteriorly and one posteriorly, the upper one being interrupted; one or two black bars at base of cau- dal. Females usually larger than the males. A large specimen taken at JVanfort, X. C., supposed to be a male of this species in high coloration, showed tin- following colors in life: I'.ack olive, sides and belly bright salmon yellow; lower tins clear yellow ; pectorals and anal wit h some dusky; posterior edge of 'caudal dark; dorsal nearly all black, a large black oeellated spot on the last rays; opercles and under parts of head with an inky suffusion; cheeks, top of head, and mouth bronze yellow; sides with about 18 narrow dusky vertical bars. Teeth in a broad band; an outer row of rather large teeth. Oviduct adnate to first anal ray for a short distance. Head 3.?; depth 4. ]). IL'; A. 10; Lat. 1. 30; L. transv. 13. L. f>-G inches. Cape Cod to Florida, the largest of our ('i/in-iiiiiilinithlii-; abundant in shallow bays. • •hilix miijuHs U'alliaiini, Arti-ili, 1'isc. 1'J, IT'.i'J: /.'-i«ijiiiUK (Lac.) (Jthr. Very similar to the preceding, but the scales apparently somewhat smaller; greenish olive, with a silvery longitudinal band, and ll'-l/) blackish vertical streaks. Head 4; depth I1,. 1'.. 0; D. 14; A. 11'; Lat. I. 13. South Carolina. ( \'ilvcr.) 40. CYPRINODONTID^: - FUNDULUS. 333 aa. Males and females with dark cross-bars. F. siinilis (Baird & G irartl) Gthr. Body moderately elongate. Head rather pointed and elongate, as in F. majalis. Sexes similarly colored; both olivaceous above; the sides silvery, with 10-15 dark vertical bars; males with an ocellated spot on the last rays of dorsal. Ventral fins short; insertion of dorsal midway between front of orbit and end of caudal. Head 3J ; depth 4. D. 11; A. 8 or 9; Lat. 1. 33; L. transv. 13. Coast of Texas, ascending streams. (£f';f/rrt>y///ra similis Baird & Girard, Proc. Acad. Nat. Sci. Pliila. 1853, 389: Hy- drar// i/>-(i ,ii mills Girard, U. S. Mex. Bound. Ichth. 68: Fnndulus similis Giinther, vi, 323; Jordan, Bull. U. S. Geol. Surv. Terr, iv, 400.) 535. F. zebra (Girard) Gthr. Body elongate, compressed, subfusiform, the back slightly arched. Head subpyramidal, very much depressed. Eye 4 in head. Fins mod- erate; higher in the males than in the females. Scales smaller than in F. similis and more closely imbricated. Olivaceous above, with a black- ish spot upon each scale ; sides yellowish, with narrow transverse black bauds or bars, about 16 in number, more conspicuous in the males than in the females, and extending from the back to the belly ; inter- spaces wider than the dark bars. Fins plain. Sexes similar. Head 3f. D. 13; A. 14. L. 3 inches. Eio Grande in ISiew Mexico. (Girard.) (Hydrtmjiira zebra Girard, Proc. Acad. Nat. Sci. Pliila. Itf59, 60; Giinther, vi, 324. Not ol' Dekay. ) aaa. Males without sharp markings; scales rough in spring. Females nearly plain. 536. F. parvipiamis Girard. Male, light olive green, mottled with darker; sides witli silvery and brassy lustre; lower parts yellow; about 20 short blackish, cross-bars along middle of sides, broader, plainer, and more closely set behind ; sides and fins with dark points; upper fins dull olive; lower yellow. Female larger, olive green above, sides not barred, with an obscure dusky lateral band on caudal peduncle. Fins plain. Fins very high in the male, small in the female. Scales large; in the males in spring roughened or ctenoid by small granulations and prickles, similar to the nuptial excrescences of some Cyprinidce; fins also rough. Oviduct form- ing a sheath at base of first ray of anal. Head 3£; depth 3§. D. 13; A. 11 ; Lat. 1. 38; L. transv. 12. L. 4 inches. Coast of California from Point Coucepcion southward ; very abundant in bays and lagoons. (Girard. Proc. Acad. Nat. Sci. Phila. 1854, 154 ; Girard, U. S. Pac. R. R. Surv. x, 303; Gunther, vi, 319; Steiudachuer Ichth. Beitriige, v, 155, 1876.) 3o4 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. tt Branchiostegale ~>. (Fundulus.) b. Dorsal lonjr; its rays 16 or 17. 537. F. SCillinolis Girard. Body rather stout. IIead subpyramidal, the snout tapering. Eye •l-l in head. Dorsal fin high, its origin nearer apex of snout than origin of caudal; anal deeper than long. Yentrals not reaching vent. Scales deeper than long, of moderate size. Dark brown with large round black spots, the spots corresponding to the scales, upon their line of intersection. Dorsal and caudal spotted. Head 3|; depth 3f. D. 17; A. 13; V. 6. Florida. (Gh-anl.) (Girard, Proc. Acad. Nat. Sci. Phila. 1859, 59; Giinther, vi, 325.) 1>b. Dorsal moderate, its rays 11-14. c. Scales rather small ; more than 40 in a longitudinal series. d. Cross-bars blackish. 538. F. diaplinnus (Le S.) Ag.— Spring Minnow. Body rather slender, not elevated, compressed posteriorly. Head moderate; quite Hat above. Fins not large; dorsal and anal rather low; ventrals scarcely reaching vent in the females; somewhat longer in the males. General color olivaceous; sides silvery; 15-23 narrow, irregular blackish cross-bars on the sides; back always more or less spotted with blackish; fins nearly plain. Teeth pointed, the outer not much enlarged. Head 4 ; depth 4|. Eye large, 3i in head. D. 13; A. 11; Lat. 1. 40; L. transv. 12. L. 4 inches. Coasts, ascending all streams to their fountain heads. Abundant in various tributaries of the great lakes, Upper Mississippi, west to Colorado, and in ponds and of the Middle and Eastern States. iliii/ilimni I.r Sucm. .Jmirn. Acad. Nat. Sci. Phila. i, 1817,130: WHtW/OKMta Kc Snciir 1. c. i:'>1 : I'intilitltis mnll(t'al midway between tip of caudal and middle of eye. FirM ray of ;m;il under second of dorsal. Anal higher than long. Scales crowded. ]!. probably ~>. Head .".J, : depth .".';. D. 10; A. 10; Lat. 1. \~>. Lake .Monroe. Florida. (Qo». 1 1 ; A.!»; scales .">.' 1-1 1. L. L'A inches. (diinthcr.) Atlantic co.ist of United States, not very common. i 11 ;iil rn i-'jurn >ii-nj't<'roclitUS (L.) Giintbi-r. — Common h'iUilixli ; Mummichog; Sult-irutrr Minnow. Uoily thick-set, short and deep; anteriorly broad, posteriorly com- pre-vse.l. the l»ack elevated; head rather short, blunt, broad and Hat on top: eye moderate, about equal to snout, about half the width of inter- orbital space and one-fifth of the length of the head: lins moderate, the dorsal inserted in males midway between snout and tip of caudal ; in females farther back; oviduct attached to anterior ray of anal lin, its open in:;- near the tip of the ray; teeth in broad bands, pointed, the outer series enlarged. Coloration in males dark dull green, the belly more or less orange yellow; sides with numerous quite narrow ill- delined silvery bars made up of spots, most distinct posteriorly: besides these are numerous conspicuous white or yellow spots, irregularly scat- tered ; vertical lins dark, with nnmeious small round pah- spots; dorsal often with a blackish spot on its last ray: anal and vent nils yellow anteriorly; under side of head yellow; youn.n males sometimes with dark bars. 1-Ymalcs nearly plain olivaceous, lighter below, without spots or bars, the scales finely punctate; sides sometimes with a few faint \crlical shades. Head .'5'rj ; depth .TrJ. J). 11 ; A. 11 ; scales ;>; L. ;>-."> inches. Maine to Mexico, everywhere very common in brackish waters, the mo>t abundant of our ('i/prhuxltnifiilir. Southern specimens perhaps reach a larger si/e (var. f/rniulix) than northern, and some speci- mens (var. iiisriih'iifus) have the head \\itler than usual. ' .,/>;/;•< /!••/./••»- Hi, i \.. S\>l. \;il.: /,,,.,• ^^-ul.nlim. Milch. Tran>. Kit. A. 1'liil. S: l-'tii«lttltrii |)rkav, N. ^. Kaiina. l'i-li. '.'I-. I-I-J: / • iiniliiliix i*< ul< ntim Stun-r, I-'isli. Mas,. -.".M; (Jiinih.T, Cal. Ki>li. llril. .Mils, vi, 3 Dm-.sal I'm ln-^iniiiii^ din-i-l ly alinM- ..rsli^lilly lirliind anal. ( \i nixiini* .lor.) •.l..rdan. Hull. liiiH'. goo. \:il. Ilisi. 1-71',. 1 J-.': type .\i-nininr>: type Pcecilia oUoacca Storer.) This genus is closely related to Fiindnlits, differing chielly in the small size and posterior position of the dorsal, \vhich has usually less than ten rays and is commonly inserted behind the front of the anal tin. The species are smaller in size than those of Fnndulus, and different in appearance, so that we feel reluctant to unite the two genera, although the technical differences are very slight. From the Old World genus Haplocliihis, Zygonectcs is distinguished by the short anal fin. The fe- males of Zygoncctes are scarcely distinguishable from those of Gambusia. Species all American. Surface swimmers, feeding upon insects. (fyj-w, yoke ; vr/Kryr, swimmer ; they being said to swim in pairs.) * Body rather elongate. (Zygonectcs.) a. Sides without black band. 25. rubrifrocis Jordan. Body moderately stout, little compressed, not elevated, the caudal peduncle deep; head rather long, broad between the eyes, fiat above; eyes large, 3£ in head, their range horizontal; mouth rather larur. Teeth small, nearly even, in a narrow baud. Scales moderate. Dorsal in i very short and small, placed a little behind the anal or about even with it, its position in the males rather more posterior; anal short, high in the males; ventrals very small; pectorals small. Color, males dark olivaceous, with a dark, bronze-orange spot on each scale posteriorly, much as in Fttmlulus catcnatus. Below, these spots are bright orange. Faint, narrow vertical, orange bars along the lower and posterior part of the body. Vertical fins with orange spots. Jaws and space in front of eyes bright orange-red; paired lins dusky. Females alnio>t uniform !ir.iss\ --olivaceous, without evident spots or red markings. Head :\\ in Irngth to base of caudal ; depth ;J:». D. 7 or 8; A. 8 or 9; Lat. 1. 3L>; L. transv. 11 orli'; B. 5. L. 1U-3 inches. San Sebastian River, Flor- ida, a larger species than most in the genus, and with the dorsal (in less posterior. Mcinl.-Mi. Proc. r. >. Nat. Mus. i-7:>, -J:t7.) 587. Z. Eirttshnlli .Ionian. Body rather stout, deep and 'compressed, the profile nearly straight, the back little elevated, and the caudal peduncle deep; head moderate; 49. CYPK1NODONTID.E - ZYGONECTES. 339 mouth rather large ; jaws each with a series of long and rather slender canine-like teeth, behind which is a band of small teeth 5 the canines larger in the lower jaw; eye large; scales rather large ; dorsal fin short and high, inserted slightly behind the anal in the males, exactly opposite it in the females; caudal large; anal fin larger and rather lower than dorsal; ventrals quite small; pectorals moderate. General color oliva- ceous ; sides covered, especially posteriorly, with rather large, irregu- larly placed orange spots, which also extend on the vertical fins; dorsal dusky, with a dark bar ; head without red ; caudal and anal more or less yellow; females obscurely marked; young with diffuse greenish vertical bars. Head 3£ in length to base of caudal ; depth 4. B. 5; D. 7 or 8 ; A. 10 or 11 ; Lat. 1. 33 ; L. transv. 10. L. 3-4 inches. San Sebastian River, Florida. The largest species of the genus, looking like a Fimdulus. (Jordan, Proc. U. S. Nat. Mus. 1879, 327.) 548. Z. tSoc-flpEEJBODS (Cope) Jor. General form of Z. notatus ; lower jaw somewhat projecting ; external series of teeth in both jaws enlarged ; eye large, 3^ in head. Olive gray, scales with ochre borders; fins yellow, broadly edged with crimson. Head 4J; depth 5. D. 10; A. 13; scales 29-10. L. 2^ inches. Elvers of Colorado. ( Cope. ) (Haplochilus floripinnis Cope, Zool. Lieut. Wheeler's Expl. W. 100th Mer. v, 695, 1876. 549. Z. liiacatus Garman. Brownish, finely punctulate with brown; white below; lips, top of head, and a line along middle of back dark ; tail with faint transverse bands. Moderately stout, compressed. Crown flat. Eye large, as long as snout, If in iuterorbital width. Lower jaw slightly longer. Outer teeth long, slender, curved. First ray of dorsal almost opposite first of anal, one-third the distance from base of caudal to front of eye; * caudal truncate. Head nearly 3; depth 4 J. D. 11; A. 14; V. 6; P. 15; Lat. 1. 36; L. transv. 12. Northeastern Wyoming. (Garman.} (Garman, Bull. Mus. Zool. viii, No. 3, 88, 1881.) «rt. Skies with a broad, dark lateral band ; fins plain or speckled. 55®. Z. nolatus (Raf.) Jor. — Top Minnow. Body rather slender, compressed behind. Head low, depressed, and rather elongate, the snout somewhat produced, the lower jaw scarcely projecting; interorbital space broad, its width about half length of head; eye large, less than snout, about 3 in head. Fins moderate, the 310 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. dorsal and anal elevated in the males. Teeth in a broad band, the outer series considerably enlarged and canine-like. Coloration brown- ish olive, with a broad, dark purplish-black lateral band running from tip of snout through eye to base of caudal; darker in males than in females: young specimens have the edges of the. band serrated; a few series of small black dots along- the sides of the back; dorsal, caudal, and anal fins dotted with black; top of head with a conspicuous trans- lucent spot in life; concentric stria? on scales, strong. Head 4; depth 4i. 1). 0; A. 11; scales 34-11. L. 2-3.} inches. Michigan to Alabama and Texas, generally abundant in ponds and canals. (Srmotiliti: ! noiatiif Kal'. It-h. Oh. 18JO, 8(.>, GO: Fu>ulnlnx uiiri'iix Cope, I'roc. Ac-ail. Nat. Sci. I'liila. 1~ I."., ?s: lln-,1 ,,-hilnx ]>nl:'!i: llua Giiuther, vi, 314: IltqrtuchiluN aim it* (.iiiu- ihcr. vi, :;!.">; Jordan, Man. Vert. '-J(i4.) **Body short and deep. (Micr'tuHua Gill.) 551. E. attrHatBis .Jordan A. I'.rayton. Body short and stout, compressed, especially posteriorly. Head moderate, broad and flattened above. Dorsal fin well back, moderately high; anal I'm rather larger ; paired fins small. Coloration dull olive; no stripes or bars; scales slightly dark-edged; a large jet-black blotch on e;:'-'i side just, above and somewhat in front of the vent, due to the black peritoneum showing through the translucent sides; dorsal and anal I'm-; speckled. Teeth small, the outer little enlarged. Head -1; depth 4. D. 8; A. 8; scales 30. L. 1J inches. Xeuse lliver, North Carolina. (Jord.-n vV Hraytmi, Bull. T. S. Nat. Mas. xii, H7s, 84.) 3.>*J. K. :aclaiiops (Cope) .lor. Hod;, .ather short and deep. Head broad; eye as long as snout, :\.\ in head, L' in interorUital width; teeth in a band, the outer series rcely enlarged. l;ins short. Yellowish brown; scales darker edged ; body ui.liont distinct longitudinal stripes or bars; belly golden; a very consp:e:;oiis jet Mack spot just hclow the eye, and conllneiit with it in the adult; dorsal and caudal lins with series o f black dots; caudal very large. Head .T:-; depth :'..\. D. 7: A. «>; scales L'8-7. L. 1.V, iuelies. Neusc Kiver (('<>!>'') to Southern Illinois (I-\>rl>rs) and .Mississippi (Hay), locally abundant. ( //<( l,t ii //is- in Imi'i'n Cope. I'roc-. Ani-'i. I'liil. Soc. 1>7(>, .l.'>7; Jordan, Bull. 111. Lab. :..', I-;-: Ha; , Proo. U. s. N.-it. Mus. i— n, r(()i.) 49 CYPRINODONTIDyE ZYGOXECTES. 341 553. Z. dispar* Agassiz. Body short and deep, much compressed. Head short and very broad, the flat iiiterorbital space being two-thirds of its length, and barely twice the diameter of the eye 5 the distance between the eyes above greater than the distance between them/below. Snout broadly rouuded. Fins moderate; dorsal much smaller than anal. Outer series of teeth some- what enlarged. Coloration pale olive, bluish in life; a very distinct brownish line along the edges of each row of scales, appearing wavy or serrated as it follows the scales; about 10 of these longitudinal stripes are present; males with the lines interrupted, appearing as series of dots and further marked by about 9 dark cross-bars; adults with a dark blotch below the eye, sometimes confluent with it. Oviduct free from anal, Head 3f; depth 3i. D. 7; A. 9; scales 35-10. L. 2^ inches. Lakes and sluggish streams from Ohio to Iowa. (Agassiz, Amer. Jour. Sci. Arts, 1854, 353; Jordan, Proc. Acad. Nat. Sci. Phila. 1877, G7.) 554. 55. brachypterus Cope. " Base of the first dorsal ray behind the vertical line equally dividing the base of the anal; ventrals not reaching base of anal. Scales large. Head wide, with overhanging supercilia ; interorbital width twice the diameter of the orbit, which enters the length of the head 2.J times. Color uniform olivaceous, the scales with brown edges; cheeks silvery; no spots on the head. Body stout. Head 4£. D. 7; A. 8. Scales 30-9. Length 2." (Cope, MSS.) Trinity Eiver and other streams in Texas. * Professor Agassiz, Amer. Journ. Sci. Arts, 1854, 353, mentions three more species of this genus, which have not since been recognized, besides two (Z. lateralis and Z. zona- tus) which are evidently identical with Z. notatus, and another, Z. lineolatus, which Professor Putnam informs us is identical with Z. nottii. Z. nottii Agass. ''The darker continuous longitudinal lines alternate with fainter interrupted ones. Males with distinct transverse bauds ; dark olive above, fading upon the sides ; sil- very below. Operculuin, throat, and space in advance of the eye orange color." Mo- bile, Ala. Z. guttatus Agass. "A large dark spot upon the centre of each scale on the back and sides, forming longitudinal rows of disconnected dots. The transverse bars of the male are much narrower and nearer together than in Z. lineolatus (nottii'). Dark olive above, fading upon the side. Abdomen silvery." Mobile, Ala. Z. liieroglyplricus Agass. "Anterior and upper parts of the body sprinkled with dark dots, passing into longi- tudinal rows backwards. Light olive above ; silvery on the sides and below." Mo- bile, Ala. 342 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 5.15. Z. sciaeljfias (Copr) .Tor. Body short and stout. Eye equal to snout, 3i in head, 1§ in inter- orbital space. Fins small. Coloration uniform olivaceous, without spots or lines. Head 34. D. 10; A. 12; scales 39-13. L. 2 inches. Platte River. (Cope.) ( Fund u I HX Nciadiom Cope, Proc. Acail. Nat. Sci. Phil. 1865, 78: Ilaplochilu.* sciadicus GiintluT, vi, 316.) 556. Z. ciirysolus (Giiuther) Jor. Head depressed anteriorly. Snout shorter than the eye, which is 3£ in head and li in iuterorbital space. Fins moderate. Light olive- colored, with narrow, dark, vertical streaks on the sides; caudal with bands of brown dots. Head 3i; depth 4. D. 9; A. 11; scales 34-12. Charleston, S. C. (Gttnther.) (Ifaplochilua chrysotus Giinther, vi, 317.) 557. Z. zoiiatus (Mitch.) Jor. Eye large, 2i in head. Dorsal almost reaching the caudal, which is lanceolate. Sides with 12 black cross-bars ; dorsal and anal dotted with black; other tins immaculate. D. 7; A. 10. Head 4£ in total length. South Carolina. (Giinther.) ( ' Eunx zonatun Mitch. Trans. Lit. & Phil. Soc. i, 443 : Fundulus zonatus C. & V. xviii, I'.tii: //«///oc7ii/«.s :onalnn Giiuther, vi, 316.) 553. Z. ciiigillatus (C. &. V.) Jor. Anal rather larger than dorsal; sides with ten or twelve broad, well- defined, vertical dark bars, nearly as broad as their interspaces; dorsal with a large black spot posteriorly, immediately in front of which is a white one; other fins immaculate. D. 8; A. 9. Head 3£. Coast of New Jersey. (Giinther.) (Funiliilus cingnlatus C. & V. xviii, 197 (D. 8; A. 10): Iltjdrargijra luclcc Bainl, Ninth Smithsonian Kept. 185f>, 344: IIaplocliilu.1 Inchv (iiinthcr, vi, 310.) 16O.— LTJCANIA Girard." (Ciranl. Proc. Acad. Naf. Sri. Phila. I^.V.), 118: (>•]><• I.n<;uiin n inisla Grd.) Moiilh moderate, the snout not produced; both jaws with a single series o!' conical teeth. Scales rather large. Dorsal and anal rays iu moderate number, the dorsal in advance of the anal; anal fin not modified in ihe males. Very small fishes. (A coined name without meaning.) •GIKAUniMCHTIlYS (LimnunjHit Giinthrr. ) i-r. (-'vprin. HiJn, HI: tyi>i- (lintrdiniuhtliya innominatus.') l?ody stout. Mouth small, tin- upju-r jaw very protractile. Teeth small, subcyliu- rical, in a single series iu each jaw. Scales rather small. Dorsal and anal tins long, 49. CYPRINODONTID^ - LUCANIA. 343 559. L. veamsta 6rd. Body oblong, much as in Zygonectcs. Dorsal midway ot body, mod- erately elevated, muck in front of anal. Snout rather pointed. Brown- ish, slightly spotted. Head 3J; depth 3£. D. 13 ; A. 11; Lat. 1. 27. L. 1£ inches. Indianola, Tex. (Girard.) (Limia venusta Girard, U. S. Mex. Bound. Surv. Ichth. 71, 1859; Girard, Proc. Acad. Nat. Sci. Phila. 1859, 118; Giiuther, vi, 310: Lucania affinis Girard, Proc. Acad. Nat. Sci. PMla. 1859, 118.) 560. JL. parva (B. & G.) Beau* Form elongated. Head less than one-fourth the length (with the caudal). Eye 3 in head. Coloration plain. D. 10; A. 10; Y. G; L. trans v. 8. Very small. Long Island. (Giinther.) (Cyprinodon parmis B. & G. Niuth Smithsonian Report, 1855, 345: Cyprinodon par- vus Giiuther, vi, 307.) 561. L. goodci Jordan. Body elliptical, rather elongate, the back considerably elevated to a point just in front of the origin of the dorsal fin ; the caudal peduncle rather deep and compressed. Head short, comparatively narrow, and bluntly pointed. Mouth small, terminal; both jaws with rather large conical canine-like teeth, apparently in a single series. Eye large, near the middle of the side of the head, its diameter contained 2£ to 2% times in the length x>f the head, about equal to the width of the interorbital space. Scales large, their exposed surfaces higher than long, in about 30 (20 to 32) longitudinal and 7 vertical series; humeral scale like the others. Fins large, especially in the males ; origin of dorsal about mid- way between snout and base of caudal, conspicuously in advance of anal; height of dorsal fin in the males two-thirds the length of the head, about equal to the length of the base of the fin; anal fin similar and nearly as high and long, beginning nearly under the middle of the dorsal; caudal moderate, sub truncate; ventrals long, in the males each with 20 or more rays, nearly opposite each other ; anal fin not modified in the male. lutestinal canal short. Mexico. (Girardinus; ^Qf?, fish.) G. innominatus Bleeker. Head thick, the snout obtuse, the mandible being directed vertically upward; neck arched so that the upper profile of the head is concave. Eye 5 in head, -£ the width of interorbital space. Olivaceous, with brown cross-bands, which are sometimes confluent. Head 4; depth 3£. D. 20; A. 22; Lat. 1. 44. Vicinity of city of Mexico. (Lucania sp. Girard, Proc. Acad. Nat. Sci. Phila. 1859, 114; Bleeker, Cyprin. 484: Limnurgus varivyatus Giinther, vi, 309.) * Dr. Bean informs us that this species, the types of which he has examined, 13 a Lucania. 344 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. reaching the front of the anal, in the females reaching the. vent; pecto- rals reaching past front of veiitrals in both sexes. Color olivaceous, the scales with dark edgings; a very distinct black band in both sexes running through eye and 'snout straight to the base of the caudal, where it ends in a round black spot ; this band is about as wide as a series of scales, although developed on parts of two series; a conspicu- ous black band in both sexes along the lower edge of the caudal pedun- cle, from the root of the caudal to the vent, dividing and passing on each side of the anal fin; fins in the female plain; in the male, basal half of dorsal and anal jet black, outer half pale with a black edge; pectorals and especially ventrals also dark-edged; caudal iin faintly mottled ; vertical fins with more or less red in life. Head 1; depth 4^. D. 9; A. 9. L. 1J inches. Arlington lliver, Florida, a tributary of the Saint John's. (Jordan, Proc. U. S. Nat. Mus. 1879, 240.) 161.— GAM BU SI A Poey.* (Heterandria Agassiz.) (Tory, Mem. Cuba, i, 382, 1831: type Gambusia punctate Poej, from Cuba.) Body moderately elongate. Month medium ; both jaws with a baud of conical teeth; snout not produced ; the lower jaw prominent. Eyes * PSEUDOXIPHOPHOHUS UU-i-ker. (Pwciliodes Steindaclmer. ) (Bleeker, Iclithyol. Lid. Prodr. Cypr. I860, -I-':?: type Xiphophoras bimdciilutiiK Heckel.) This ^eiius has flic general characters <>f (;ithiAo- phorun. ) * Anal process ending in a small hook. P. bimnculatus (Heckel) Giinther. Kaeh M'.-ili- with a brown crescent ; a black sp >( behind upper end of gill-opening, and a roond blackish spot on upper half of root of caudal. Hcad'H; depth i;. i;. c>; D. !•»: A. Hi; M-al.-s >J!l-8. L. 4 iiK-hrs. Mexico. (Ciiiillur.) (Xiphophonu bimaoulatue lleckd, Sit/^sber. Akad. Wiss. \Vien, 1>1-', ICi'.t; Ciinther, vi, ** Aii;il pmce.ss without, hook. P. rf'ti<-iilnlii.i Tioschol. Coloration as in the im-cedinr; ; caudal tin entirely blaekish. Depth li in total I). 1C,; A. -. Mexico. (<;iiiilli,-r.) (Tro-chcl, Miiller's li.i^c Mexico, iii, App. l'»l; (iiinther, vi, :!:;:;.) I'.KI.ONKSOX Kner. (Kner. Sitx.^slier. Akad. Wiss. \Vini. l-i'.n, \|, |]'.»: type /;, l,,n<-*<>.r l>3: typo A*J/>7iojJ/tor«.s EeokeL) Tliis genus (litl.-rs from Moll'n m*u onl -shaped appendage, which in the adult is sometimes as long as the rest of the lish. Anal of the male i ..... lilied into an intromii lent or^an, one or I \\ o of I In enlargi-d ra\ s being provided u ith hook- like IIP-. Itianchiostegal.s .">. (|/;, varie- gated.) • * Branchiostegala 5. (1'u.rilin.) 56§. P. coticliiuiia (Girard) Jor. & Gilb. Body short, back convex; lieud small; scales very large. Brownish, each scale with a large brown spot; an obscure black lateral band; fins plain, event the dorsal, which has a few black spots. Ilead 4. 1). 9; A. G. Nuevo Leon, Mexico. (Ginml.) (Liinia coitdtiana Grd. Proc. Acad. Nat. Sci. Phila. 1839, 116: PceciUa couchii Giiuther, vi, 347.) 164.-CJIRARDINUS Poey.* (Poey, Mem. Cuba, i, 383, l^.'.l : type Gintnliiuit mi'taUiciis Poey, from Cul>a.) Body moderately sleuder ; mouth small ; mandible very short, its bones not united; snout short; both jaws with a single series of slen- der, movable, pointed teeth ; scales father large,; anal fin more or less ill advance of dorsal, in the male modified into an intromittent organ; intestinal canal elongate; mud eating. Very small fishes, the smallest • I'LATYriKCIU'S Giinther. (Ciinther, Cat. Fishes Brit. Mus. vi, 350, 18(36: typo rinli//><>< -Him tmu-ulntitx Giinther.) •all lislirs allied to CirartHnii-i, Imt with tin- origin oi' the anal lin li.-hind that of the dorsal. Mexico. (itXarvS, broad ; iroixlA.o$, Pcooihu=Pceeitta.) P. maculatiia Gtbr. Body much compressed and elevated. Caudal peduncle short and deep. Olivaceous, n roundish Mark spot on middle of root of caudal ; a l>lack spot oil middle of side, of body ; dorsal often spotted \vith black : margins of anal and caudal black. Head 3J ; depth -J^. D. 10 ; A. 9 ; scales 25-8. L. li inches. Mexico. (Gunthcr.) (Giintlier, vi, :!.'.(!. ) GOODEA Jordan. (Jordan, Proc. U. S. Nat. Mus. l-T:i. 899: type Goodea alripiiinis Jor.) I'oriii of i'liniliiliii. Uut with the intestinal canal elongate, the dentary bones loosely joined, and the teeth slender, movable, tri<-ifiM-d, tlieb.iek nearly st mi-lit, tho caudal peduncle dei-|>. Head short, broad, depressed. Mouth small. Lower jaw projecting. TcHh ]oosel\ inserted, not oloae together. K.NC 3^ in head, a little more than half the \\idth of (lie inlerorbital space. Humeral scale somewhat enlaru'-d. 1 'ins small. Dorsal slightly in ad\ ance of anal. Caudal small. Head I: depth I. [>. 12 J \. 1-: l.at. 1. 38) L. trausv. 13. L. 4 inches. Guanajuato, Mexico. From a salt lake in a volcanic basin. (Jordan, Proc. U. >S. Nat. Mus. l-7:>, -JW.J 50. UMBRID.E. 349 vertebrate animals known, found in the fresh waters of the warmer parts of America. (Dedicated to Charles Girard.) 569. O. formosus Grd. Body short. Snout 'very short. Anal smaller than dorsal. Brown- ish olive, with a black streak from the snout along the middle cl the side, crossed by 6 or 8 brownish-black vertical streaks ; a black spot at bases of caudal, dorsal, and anal. Head 3£ ; depth 3f . D. 7 ; A. 9 ; Lat. 1. 28. L. 1 inch. South Carolina to Florida ; said to be the small- est known fish. (Girard, Proc. Acad. Nat. Sci. Phila. 1859, 62; Giiufclier, vi, 354.) 570. G. occidentals (B. & G.) Grd. Brownish above, with a black lateral stripe ; a black line along lower margin of tail. Fins unicolor. Head 3f ; depth 3f . D. 7 ; A. 7. Gila Basin. (Girard.) (Kcterandrla occidentals B. & G. Proc. Acad. Nat. Sci. Phil. 1853, 390; Girard, U. S. Mex. Bound. Ickth. 73 ; Giinther, vi, 354 : G-irardinus sonoricnsis Girard, Proc. Acad. Nat. Sci. Phila. 1859, 120 : Girardinus sonoriensis Giiuther, vi, 355. ) FAMILY L.— UMBPJD^E. (The Mud Minnows.) Body oblong; broad anteriorly; compressed behind. Head large, flattened above. Mouth moderate, the maxillary without distinct sup- plemental bone. Bands of villiform or cardiform teeth on premaxil- laries, lower jaw, vomer, and palatines ; premaxillaries not protractile. Lateral margin of upper jaw formed by the broad, short maxillaries, which are toothless; lower jaw the longer. Gill-openings wide; the membranes scarcely connected; gill-rakers little developed; branchios- tegals G-8. Scales moderate, cycloid, covering head and body ; lateral line obscure or wanting. Dorsal fin moderate, posterior, in advance of anal ; ventrals small, close to anal ; pectorals inserted low ; caudal fin rounded. Stomach without blind sac; no pyloric cceca ; pseudobranchise hidden, glandular ; air-bladder simple ; oviparous ; sexes similar. Car- nivorous fishes living in mud or among weeds at the bottom of clear sluggish streams and ponds, extremely tenacious of life, like the Cypri- nodontidce. Genera 2 ; species 3, Umbra crameri of Austria, and the following. The family is very close to the Esocidcc, differing mainly in the smaller mouth and weaker teeth. (Unibridce Giinther, vi, 231, 232.) 350 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. ^Pi-etoral* narrow. with f*-w (l'2-ir>) rnys; ventral rays6; scales moderate. UMBRA, 105. ** Pectorals broad, with many (33-36) rays; ventral rays 3; scales small.. DALLIA, 166. 165.— UlttBRA Muller. (Mclanura Agassiz.) (Kramer ; Muller, Abhandl. Akad. Wiss. Wien, Bcrl. 1842, 188 : type Umbra crameri Mliller.) Body oblong, covered with cycloid scales of moderate size, without radiating strife; no lateral line. Head shortish, little depressed. Eye rather small. Cleft of mouth moderate. Ventral fins 6-rayed, below or slightly in front of dorsal; anal fin much shorter than dorsal. Pec- torals rather narrow, rounded, placed low, with 12-15 rays, which are much jointed. Caudal rounded. Prcopercle and preorbital with mu- cous pores. Branchiostegals 6. Gill-rakers short, thick. Size small. Two species, very similar to each other, inhabiting the waters of the United States and Austria. (Latin, umbra, a shade.) * 571. U. liini (Kirt.) Gthr. — Mud Minnow; Dog-fish. Dark-green or olive, mottled, sides with irregular narrow pale bars, these often obscure or wanting; a distinct black bar at base of caudal ; whitish stripes sometimes present along the rows of scales. Head 3^ in length; depth 4J. B. G; P. 14; D. 14; A. 8; V. 6; Lat, 1. 35; L. trausv. 15. L. 4 inches. Vermont to Minnesota and South Carolina. Abundant northward in weedy streams and ditches. " A locality which with t lie .water perfectly clear will appear destitute of fish will perhaps yield a number of mud-fish on stirring up the mud at the bottom and drawing a seine through it. Bitches in the prairies of Wisconsin, or mere bog-holes, apparently affording lodgment to nothing beyond tad- poles, may thus be found filled with Mel