ae) J THOMAS LINCOLN CASEY LIBRARY 1925 BIOLOGIA CENTRALI-AMERICANA. INSECTA. COLEOPTERA. Vor. IV. Pant 1. _ HETEROMERA (part). BY GEORGE C. CHAMPION, F.Z.S. 1884-1893. INTRODUCTION... EXPLANATION OF PLATES . Errata ET CoRRIGENDA TENEBRIONIDE . . . CISTELIDE . . .. OTHNIIDH . . Ninionw# ee MonomMIpDH. . . . PLATES. CONTENTS. bo XXVli XXXIV 1,477 385, 563 465 470 472, 570 INTRODUCTION. THE Heteromera include numerous heterogeneous families of Coleoptera, which agree inter se in having their tarsi distinctly 5-, 5-, 4-jointed * ; and in the whole of the species here enumerated, Mophon tinctipennis, which has 4-jointed anterior tarsi in the male, is the single exception to this formula. The only other Coleoptera likely to be confounded with the Heteromera are certain members of the Cucujide and Crypto- phagide, belonging to the Clavicorn-series, which have the hind tarsi 4-jointed in the males and 5-jointed in the females. The Heteromera comprise a greater variety of forms than any other of the main divisions of the Coleoptera, nearly all of which are, as it were, reproduced here. As examples of this assimilation, the following genera are especially noteworthy, viz.:—Statira (Lagriide) to various Carabide (Agra, Calleida, &c.) ; Cuphotes (=Spheniscus) to Cypherotylus (Erotylide) ; Doliema (Tene- brionide) to various Cucujide; Uroplatopsis (Lagriide) to various Hispide (Uroplata) and Lycide ; Calopus (Gidemeridz) to various Longicornia; Othnius to various Cleride ; Phrenapates (Tenebrionide) to various Passalide; Hapsida, Nautes, and Gonospa to various Chrysomelide ; Diplectrus (Gidemeride) to Chauliognathus (Telephoride) ; Sisenes (Ckdemeridee) to various Telephoride; Nilio to various Coccinellide and Endomychide ; Zypetes (Tenebrionide) to Apierus (Histeride); Paratenetus (Tene- brionide) to various Cryptophagide (Cryptophagus and Corticaria). Probably no better cases of so-called ‘mimicry,’ or homochroism, can be found amongst the Coleoptera than exists between certain species of Cuphotes and Cypherotylus, and between Uroplatopsis (U. mimica) and Uroplata (U. dimidiata). Fourteen families altogether are represented in Mexico or Central America, which are here dealt with in two volumes: the Tenebrionide, Cistelidz, Othniide, N ilionide, and Monommide in the first; the Lagriide, Melandryide, Pythide, Cidemeride, Xylophilide, Anthicide, Mordellide, Rhipidophoride, and Meloide in the second volume. All these families are common to Central and North America, with the exception of the Nilionide, a small group peculiar to the forest-region of Tropical America; two of * In an aberrant Old-World genus, Heterotarsus, Latr., they are 4-, 4-, 3-jointed. vi INTRODUCTION. them, the Othniide and the Xylophilid, contain as yet no described species from the South American continent, but both are certainly represented there. The Aigialitide, Cephaloide, Pyrochroide, and Stylopide, so far as at present known, are absent from the Central American fauna: the first two of these families contain but a single species each, and are both confined to Boreal America. The Pyrochroide are mostly restricted to the temperate or boreal regions of the Northern hemisphere ; four genera are known as occurring in North America, one of which, /schalia, may, perhaps, be found eventually in Northern Mexico. The Stylopide, parasitic upon Hymenoptera and Homoptera, are very widely distributed, and the family can scarcely be unre- presented within our limits; these insects, however, are everywhere very rare, and seldom met with by ordinary collectors. The total number of species of Heteromera here enumerated from Mexico and Central America is 1776, belonging to 261 genera; 1295 species and 92 genera are described as new. In Gemminger and Harold’s ‘ Catalogue’ (1870) 6827 species are given for the whole world, and since that time nearly as many more have been described, so that at the present time Mexico and Central America furnish about 13 per cent. of the named species of the whole world. The following analysis shows the number of genera and species in each of the fourteen families; and the Table (pp. vii-xvi) gives the geographical distribution of the genera, with the number of species of each genus. The generic names printed in “clarendon type” are new; those placed within brackets belong to genera doubt- fully found in the Central-American Fauna. The Republics of Honduras and Salvador are omitted from the “ Table,” as no material has come to hand from those places. er Total number | Total number | New specie Families. of species. of genera, described. piss: Tenebrionids ............ eee eee - 870 145 694 49 Cistelidee .... cee cece ee ee ees 158 24 150 15 Othniide ..... eee eee eee 6 1 5 — Nilionid®..... 0... eee eee eee eee 4 1 3 — Monommid® ..........0c cece eeee 12 2 7 1 Lagriid®@ 1.0... cece ee cece eee 107 9 97 6 Melandryide ...............0.84. 45 20 40 9 Pythidee ..... cece eee ee 7 5 6 3 (idemeride ........... 0.2 eee eee 90 12 84 5 Xylophilide..... cee ee ee ee eee 45 2 44 1 Anthicide .......... 0c eee 93 8 69 — Mordellide .......... 0. cc eee eee 158 12 147 3 Rhipidophoride .................. 21 3 11 — Meloidzee 1... 0... ce ee eee eee eee 160 17 388 pan 1776 261 1295 92 Total number of species. INTRODUCTION. vii Geographical Distribution of the Genera of Heteromera represented within the limits of Mexico and Central America. Sho bo HHO toto ORR HED HTH AWH for) oO CrnTRAL AMERICA. 2 M rd H S$ a — fw s] i lala ar S El2is zZ =| 5 he Fis |S] 38 2)/48] es! s]-52/ 8a BYE e/ 2/7 8/2) 2) 2] se 21 = 2 a}/Z2/S|/F al oSlazlolalala TENEBRIONIDE. 1 | Pimeliopsis ............ ae * — | Triorophus .............. * | * 2 | Trimytis...........+..5. x1] * | * 1 | [Trientoma] ............ we fee | 2? * 3 | Mesabates .............. ..[* | * 1 | Pescennius.............. Le fae | *® 1 | Soomias .............0.. Lede. | ® 2 | Mencheres.............. oe ee 1 | Posides ................ es | 1 | Eurymetopon ............ * | * | 28 | Emmenastus ............ a ee The apterous species do not extend south of Mexico. 13 | Schoenicus .............. a 31 | Epitragus .............. xix | «ei|*«)«} «el * | *) & | «| «| * | 2? Introduced in Sandwich Islands. 3 |Tydeolus .............. . * 6 | Zopherus.............6-- Oa er ee 2 13 | Nosoderma.............. .Pwe ] el ela foe] ee dee lo. pe |... | | 2? Also Usambara, E. Africa. 1 | Areoschizus ............ * | * | * — | Dacoderus .............. * | * * Asida ........-2-05- . on 49 (Tisamenes, Ucalegon,Za- xl xe | x {As very numerous in species in leucus, and Poliorcetes.) Kurope and N, Africa. — | Microschatia ............ * | * 6 | Astrotus .............0-- * | * | * 1 | Sicharbas .............. we fe. | * 5 | Ologlyptus .............. * | * | * — |[Psectrascelis] .......... LP 2]. peepee Peed ee fee]. Pe] ® be 1 | Branchus .............. we d.. late. le. dae] aw tee lo. Pee]... |... | Also Bahamas. — | AmectuS ...........+.0-. es ee er ee 2 1 | Oxinthas .............. ef ee | ® 2 | Cryptoglossa ............ * | * — | Centrioptera ............ * | * 6 | Eusattus.............06. *|]* | * 96'| Elmodes .... 2. cece eee elelal ti..ial..]../..]..]..|.. | Just reaches the Los Altos region of Guatemala. | Embaphion ..5......0.00. * | * 198 t Not yet recorded. vill INTRODUCTION. Geographical Distribution (con.). CrentTRAL AMERICA. | . 3 wm | § S = s 2 om ie z a oe El2/| ae | & a}2/5 288 | 198 TENEBRIONIDE (con.). 10 7 | Argoporis ............4- * |e | x 1 | —j|[Ammophorus] .......... 1 | — | Diceroderes.............. * 1 1 | @nopion...........6.... en re 3 2 | Centronopus ............ x] * | * 1 | — | Pyres .............-06-- _ es 4 1 | Rhinandrus ............ * > * | # 11 2 | Zophobas ..........0e me re: 1 | — | Alobates............00.. * | * 1 | — | Tauroceras .............. | #® 2 1 | Nyctobates ...........5.6) 65 * | * 8 7 |Nuptis .......... ee eee. * 2 2 | Matus.......... 0c ee eee * 1 1 | Hicetaon ...........4.. * 1 1 | Sthenobma.............. . * 2 2 | Glyptotus .............. * * 3 3 |Isicerdes .............. - * 6 6 |Hesiodus .............. ? * 1 1 |Ilus oo... ce. eee eee 2 2 | Choastes..............5. . 1 | —|[Tenebrio] .............. * |... 2 2 | Rhacius................ .. * 1 | — | Eupsophus.............. wa ae 2| — | Hopatrinus.............. eo. * 1 | — | [Pedonceces] ............ | 27 22 | Blapstinus .............. a oe” 2 2 | Notibius ................ a 2 2 | Conibius .............06- *i)* * 3 3 | Ulus ........ cece ee eee *]* | * 1 1 | Penichrus .............. oe 3 2 | Trichoton .............. * | * 1 1 | Cnemeplatia ............ * .. 4 4 |Crypticus .............. eo... ® ~——_|-—- 400 | 276 | | a .iele/2| 8s EF 6) 8) &| a= oo; g 5 3 Si/Mi si sig 3 . 3s | .2 ° Hl OoOl|aAloO * * x | T |) T | * x) * #) KR | *)*e *l xe a ee ee a 2 * | a * | T ) xls) tT a 2 * * *&) * x * *i ft ie) # | *& .. * * * cele * |. +i) x * T Andean and extra-tropical 8. Am. $ o 5 x* | * * | * 1. * | * * | * * * * | * *x | * * * ? * * | * | x * * | # * 1 * | * * [we | * | Antilles. Also Galapagos Is. Recorded by mistake from Sandwich Is. Introduced in St. Helena. Cosmopolitan. Origin doubtful. In Central America restricted to Atlantic slope. : Probably recorded from Panama by mistake. The other described species are from the Galapagos Is. Atlantic and Pacific coasts; also inland. Also Europe, N. Africa, and Madeira. Also Europe, Asia, Africa, Canary Is., Australia, &c. Tt Not yet recorded. INTRODUCTION. ix Geographical Distribution (con.). CrntrAL AMERICA. 4 RM g 8 3 | x a] |g ,| 5 ae . |B] [2 gle «= | § ra = 5/8 x | 2 e[s/2 a 4|3 ss 2) 2 1e Rlélai¢ ai|® a |B al2lalglZlele|2)2|el ala a oe ria | EIB lisSisSlals Sisi|s = 1s SIEIE/E/F |B /8leleisl|els a | 4 fle isialalsle2is|aé]al|4)- 400 | 276 TENEBRIONIDZE (con.). 1| — | Phrenapates .......-.+.. we dee [ee dee * | * | * | ees 1 1 | Daochus .........----08> es es 1 | —|Peneta .......--seeeees Ledee dee dee fee dee Jee des | # ES 1 | — |Cleolaus .........+-s.00+ ede. | * 1 1 | Telchis ........++---0-- se Pee dee dee feeder oodles | ® Be 2 2 | Phthora ........---+ee0- *].. | * HK jee Also Europe. ? Lifu I. 1 1 | Zypotes .... .. eee eee ees ee ee ee 1 1 | Arrhabeus ............ es en ee ee 1| — | [Gnathocerus] ...... bag dew tale. bcd ae fee ]e. |.. 7. | a |. | Cosmopolitan. Origin doubtful. 3 2 | Echocerus .........- Lae dew dae dae |] tla foe | th | tp |... | | Introduced into Madeira and Ca- nary Is. 2 2 |Sicinus ......cceeseeees a * 2 2 | Iccius........ ee cecccees .-[.. | * * 2| — |[Tribolium] ......... i * * * | Cosmopolitan. Origin doubtful Q|} — | Alegoria...... eyeeeenats . *e|Tl*el|e felt le |e * a3 1 | Pheres ...... eeesee esse we dee fee [ee .. * 1 1 | Uleda........-eeeeeeee: .. de. | * ws .. | 1| —|Antimachus .......-...- on ee .. | * * Z 5 | Uloma.........008 oesees a oe ee * | Generally distributed. 1 1 | Cynwus ...... eee eens: * | x 2| — | [Alphitobius] .........-.- *]* | * | * * | * | | «| * | Cosmopolitan. Origin doubtful. 1 | — | Aphanotus .......--.---. * | * . 6 4 | Doliema .....eeeer ee eees ele lel«l «lal | t |] || * | Also Java, Manila, Batchian, and Ceylon. 3 2 | Sitophagus ......-....--- ee ee Se x | Introduced intoEurope and Madeira. 6 3 | Ulosonia....seseeeeeeess a ee * Q| —|Metulosonia ...........- v3 e|../* |e |e) Tle d* 1 1 | Phayllus ........ eevee - a ee a 1 | Msymnus ........--6--- .. * 3 2|Mophis ........e.+---:: oe. ee ee * 6 4 | Corticeus (Hypophleus)....) *} tT | *) tT) * | * | * Tile|x* x | Generally distributed, including Australia. 1 | —|{[Palorus] .....- eeeeeeis wl |..|eelee|ee fee lee fee fe) |-- |» | Cosmopolitan. Origin doubtful. 1 | — | Diaperis ........+-.+---- xl.ofaweiee| Tha le. |..].. pa |. | ® | Generally distributed, except &%. Africa and Australia. 15 9 | Arrhenoplita (Hoplocephala)| *« | t | * | * | * | * | * + | x | | «| « | Almost universal, including many Oceanic islands. i 1 |Saptine ....-eeeceseeeee| eo fes | * 481 | 323 + Not yet recorded. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, March 1893. b xX INTRODUCTION. Geographical Distribution (con.). g CuntTRAL AMERICA. < TR Z re} 2 8 3 S" od o i 8 | 2 2 | = 2/212] | | {ale =| Fle | 2) ./2/2/2/8/) 2/3181, R e ele\/2/2/8/8/2 a | 2 g |e $18 SIS el Sl/FBlZlelel elf 2/3 a Gq 4/42 /0;/F (H/o /A/oj;ayelsjaia 481 | 323 TENEBRIONIDZ (con.). 48 | 23 | Platydema ........-..005 wl «| «il «| «lal «l«| «| «*] «| | Generally distributed, including _ Australia, Sandwich Is., &e. 7 2 | Liodema.............005 * *|*I TPT] ei] «| T | ep * bee 1 1 | Stenoseapha ............ ° * . * 1 1 | Paniasis.............06- . * 1 1 | Lelegeis ............-06- * 2 1 | Cosmonota ...........05- * * | *&| * ..| * 9 4 | Hapsida ..........--000- *| *| *) #) *] | RT ® 1 1 | Gonospa.......... 02.06. we . *| * Jo. 2 2 | Enneboous ...........06.- .J.. | * Le * | *|.. |. | Also Tasmania. 9 8 | Phaleria .. 1.6... ee eee «| «| «| «| «| «| *|T | *] *| *| *|Sea-coasts generally, except Aus- .. tralia. 1| — | Byerea ...........---5: .. | # ood. 1| — | Scaptes ............-0-5 * | # ioe * *] *| ? | .* 1 1 | Xenius ...............- te lee * 2 1 | Calymmus .............-. * | * *| *]..| YT * 4 4 | Ozolais .........-00008s .. .. *¥| *| eT * 6 4|Goniadera ...........-5. *| |e) e) | Re] eT 2 2 | Xanthicles.............. . a * 1 1 | Amymone............-. a rr a 11 | 10 | Anedus ................ *)*| *| *) *| | *¥] *e] RYT * 16 | 14 | Paratenetus ............ ce ee ee ee ee 2 1 | Cyrtosoma .............. * *| *| ®] *e) REX * 1 1 | Othryoneus ............ . * .. | * 1 1 | Camaria .............5.. wees x] *| * Also ? Madagascar and China. 1 1 | Blapida ................ *| x ..| * 1 1 | Mophon ................ a * * 3 3 |Epicalla ...-.......... * * * | * 2 2|Moon...............--- we dee Ds en ee ee 1| —|Elomosda .............. . ee | 12 10 | Acropteron .............. * +l el «| «| ep *| &¥] x 1 1 | Pseudapocrypha ........ * 1. | * 1 1 | Saziches...........0.... . * 9 6 | Oxidates................ * 3 2 | Mitys..............0... * 2 2 \Isaminas .............. es a 18 | 12 | Hegemona.............. *) ei) eR] ek] eK] el RD x All the described species but one | _. are from Central America. 665 | 448 + Not yet recorded. INTRODUCTION. xi Geographical Distribution (con.). CruntraAL AMERICA. & wa a $ 3 Se |< iG g | G ae | 4 =| | £4 3 8 S = a| 8 g | 3 e1si4| |g 4| 3 a4 S1218) |f)/4lel4|] [4/3 e S8l=|a/8/E)8/P/2 es] Sl ele ot m 5 | 4 ~ ° Oo x a : 4 3S ~/ fe E IE e (S/F leis ei el 3 |B a | 4 Ele lS|slalole2lsliélalala4 665 | 448 TENEBRIONIDZ (con.). t | — | Dimomus ....ececeeeees ~te.] & i.e] ee dee |e) dee fee dee |. |... | Recorded. from Mexico, but not _ since corroborated. 90 | 18 | Nautes ........ eee eees ee ce se ee ee ee 51 | 42 | Tarpela ........20-+--6> oe ee ee ee t | Chiefly tropical. 18 | 15 | Helops .......-.-.+-+5- alae] *( Tt] ft] *| rT) rt] *p* * | Generally distributed, except Aus- tralia and S. Africa. 3 3 |Mentes ........-0.2006- tebee tee bee tee | ® Lee dee | ® . i ee ee 13. |. 11 | Talanus ..........+-.06- ei rl] ei tT) «| *e) *] ee] eT * | Chiefly tropical. 6 3 | Pyanisia ......ee------ ee * 6 2 | Cuphotes (Spheniscus) ....| . * fl x*x| *| *] *¥>* 10 | 10 | Peecilesthus ...........-- ee ee 69 | 384 | Strongylium ...... weueee ee * | Chiefly tropical, also warmer parts of Asia and Africa. 7 7 | Otocerus (Hoploptera) ....|.. *| * *] * i 1 | Pseudotocerus .......... . * * 870 | 594 PAIR inn RD CISTELID Zz. 46 | 45 | Lobopoda .......-++.+6+ xl al «il «i «| «| «| | *] «| *] * | Chiefly tropical. 1 1 | Temnes ........-.+----- we ec bee a ..| * 11 | 11 | Allecula .............- aloe d.. | ae] et toe] et tT] ep & |] 2 | Also Hurope. 8 8 | Alethia ...........-4-4- ..t «| * 1 1 | Theatetes .........---6- ..de. | ® 5 5 |Charisius ............-. ee ee 1 1 |Narses ........ .+--e-- sePee dee | eed ee | # 39 | 37 | Hymenorus............-- wll «lal tl a«lal..|..]..].-|].. | Also Europe, Asia Minor, &e. 1 1 | Manes ..........2.0-8- we * —_ 1 1 |Polyidus ............6. - * | .. * 2 Q2|Menes ..........--..5> . * | * 2 2 |Meneceus ............+- * *|.. * 1 1 | Diopeonus .............-. en eee: . 1 1 | Pitholaus .............. wa Bes fee dee beef # 1 1 | Amaropsis.............. .e * 9 9 | Phedius................ a * 1 1 | Telesicles ............-- ae Oe 4s 19 | Cistela oe eee ee ee xl«l «i ti] rile} *e| «| ep t]..].. | Also Europe, &c. 5 A> | Tsomeira 2... ce ee eee es el rial ti..| *]--|--]--pe-]-- | -- | Also Europe, N. Africa, &c. 148 | 144 + Not yet recorded. 62 INTRODUCTION. xil Geographical Distribution (con.). | CrntRAL AMERICA. < mM as S ‘é & 3d 4 Ss 3 5 e | 2 s| \2 Par «3 | 8 S| | a | 5 | 3 €/§)2 j 4} 5 —q | 8 S| Ele Elalal¢ a | = ge | 8 el2l2/eietlel Solel elelala z | B EVS|/E/2/8\2) 2/3) 8/2) 813 @ | eg 15/8/82 lel 8l2)81/S) E32 a | & a/42;/d/Flaelol/424islialal4]-< 148 | 144 CISTELIDZ (60. ). Q9| 2) Erxias ............008- - * % 1 1 | Prostenus ..........006- .. e we dae x) *| x 3 3 | Lystronychus ............ * *|/ #1 PT] el] *| Tt] Px 3 | — | Xystropus .............. 2 * {| ¥| fT | ¥P x . | Doubtfully Californian. In Mexico reaches to Isthmus of Tehuante- pec only. 1 — | Cteilsa........6 eee eeeees . * *i] * 158 | 150 7 | iol . OTHNIIDZ, 6 5 | Othnius (Elacatis) ........ * * Tlal Til Trl] «if? ...| Also. Borneo, Batchian, Ceylon, | Shem nS ocsaestceste Japan, Siberia, &c. NILIoNIDz. 4| 38) Nilio ..............-46. */ #*| T | eT x MonoMMIDz. 11 6 | Hyporhagus ............ Pe) *) *) TT) *#) ee) Tr] ep &e] ee] 1 1 | Aspathines ............ rs ee 2 1. | * 12 7 LAGRIIDA. 83 | 75 | Statira .. 0... cc ee ee ee i * | Chiefly tropical 9 9 | Uroplatopsis ............ .e .. ee eth ita 2 2|Epicydes .............. .. * * | * 3 3 | Sphragidophorus ........ .. * * * | T 1 1 | Meniscophorus ....... eeel ee .. .. * | x 5 4 | Colparthrum ............ . * Ti *|*) & lx] x 1 1 | Othryades .............. 1 .. a * 1 |. 1 | Rhosaces ............., an 7 .. * 2 1 | Stilpnonotus ............ * * * 107 | 97 | + Not yet recorded. INTRODUCTION. Geographical Distribution (con.). xili CrentTRAL AMERICA. 4 TR S 3 gis 3 g Le ; |= = " gi 4 2. s ‘3 | B/E . 8 alésia a | nw oS Sig | 2 3 <_ ji Z| 3 12/2) |2l4]4l8] .]J4l3 Z 2 sisi 2ieizlelalel¢eieal él - A oY 2ia| 2/8 B| & s is ails |& & £15 ele; e/2(F 12) 812| 81 E) =e = 7; 4IZ/O;F/AS/O/4/O;/afal/ai a MELANDRYIDE. 3 2 | Eustrophus......... ee oe * | x ...| Also. Europe, Tropical Africa, and | Japan... 5 4 | Eustrophopsis .......... * Tl aetowel PT] ep al. a 1 1 | Orchesia ....ceeee eee eeee * ve ..| * re 2 Also Europe, Asia, and Australia. 1 1 | Microscapha ..........-- * * * weenie 1 1 | Cuphosis.............-.. . * * | * |. * | * es rae 4 3 | Dirceea ....0. cece eee *p..| * * | | * | x .... | Also Europe and Japan. su] 1 | Anisoxya ........e0.eee *&]..| * . me .. | Also Europe. 1 1 | Keuxes ...........0-0.- .. 4. % 1 1 | Drances ............4.. we fee | * 7 7 |Symphora ..........00-- * * * * Lice svn 's'@ 4 _ 4 4 | Canifa.... 6... cee eee ee * * * * . | ? Exclusively American. 5 5 | Evalces ...........+---- .s * * * 2 2 | Osphya .......0.eeeeee Kp. |-- * <. .. | Also Europe. 1 1 | Mycterus .............. * | * ie os . | Also Europe and North Africa. 1 — | Ischyomius......... weeeel we dee oe we lee * i x rere 1 | — | Polypria .....0.5....20-. . Ki ..| &| *|] * 3 3 | Conomorphus............ . we dies * * 1 * 1 1 |Cleodewus .............. .. ve - * 1 1 | Physcius .............. .: a . * 1 1 | Thisias .............05. a * * * 45 | 40 PyTHIDz. 1 | — | Lecontia (Crymodes, Lec.)..| *] * | -- + o[-- Boreal America. 2 2 | Spithobates ............ nee * * * i 1 | Sosthenes .............. wa peed ee * 1 1 |Salpingus ........... re 1. | % edaad * Also. Europe, Madeira, &c. 2 2 | Lanthanus...........-.. . * *| * .| * (i 6 CEDEMERID. 4 4 |Calopus .......-.+--. wee] # * * Also. Kurope. 8 8 | Microtonus.......+.eeee- *% * * Also Japan. 1 | — | [Nacerdes] .........+...- x * os * Europe, &c, Introduced with timber . into.N..& Central America, S._| 8 612 Africa, Canary Is., and other | places. -* Not yet recorded. INTRODUCTION. Xiv. Geographical Distribution (con.). z CuntraL AMERICA, ~ mM 2 |g iG g |e 2 | 3 =| |z £\< a i: 6 = oma ne= S| 2 a|¢| a , g| 8 3 3 S ais Elale|é “|e g 3) s eS -/ 53/3 3 | em > ft 4 S . 5S 3 sfeio/e¢/FBl] se) >is] stele] es a o Stale/S]/s)s}e)/2) 878) 813 ale elEle/slHls ele) sl/l sls 2 g ° ® So . = oe fo) Gs} oS q =I a | & “aAj2/S/F|/alsl/ajojatal|ai< 13 | 12 CEDEMERIDZE (con.). 6 6 | Ditylus .........---6.-- * * * we feed. . | Also Europe, Canary Is., &c. 6 6 | Diplectrus ............--|.. * *| *| *| *] x 2 2 | Diplectroides............ ve * * 3 3 | Vasaces .......ee00----0] 0. * * . 21 | 21 | Sisenes ..............-- * a 1 | Vodomarus ............ .. * *|.. * ao : 8 | Copidita ........eeeeeees wx f.. | #1... * | #*#|..| ¥E + |.. | « | Probably widely distributed. 28 | 23 | Oxacis (? Ananca, Fairm.)..| x] *| *| T | *| *; «| T | *] * | *1. * | Widely distributed, _ occurring also in many Oceanic islands, Absent from Europe. 2 2 | Piras ...... cee ee ec eeee * * 90 84 CT XYLOPHILIDZ. 44| 43 Xylophilus.............. * * *| x * | * Generally distributed, including Australia. 1 1 | Cnopus ...........eee ee]. * 45 | 44 ANTHICIDA. 5 5 | Hurygenius.............. x] *| * * * 1 1 | Bactrocerus .........-.. *Y.. |... .. | * 11 11 | Macratria ..........008- rae ee Se ee ee ee * | Generally distributed, including ; Australia. Absent from Europe. 16 | 14 | Notoxus ...........-..0 ee ee ee 2 * | Generally distributed, including | Australia. 1 1 | Mecynotarsus............ * * ...| Widely distributed, including Aus- tralia. Chiefly maritime. Not recorded from §S. America or Antilles. 7 7 | Tomoderus ..........+-.- * * *| x * | x | Generally distributed, including Australia. 1 1 | Formicomus .........--+/ # * . * | OX. Generally distributed, including Australia. Very few species in |. America. 51 | 29 | Anthicus..........--0--. Pe) e) e) ee) oe) &) P| oe] & | & | & | Universal. 93 69 | + Not yet recorded. INTRODUCTION. Geographical Distribution (con.). XV CENTRAL AMERICA. § wo g g & e | # a & oie 3S BR i) =| | o| = Fa = oe 8 wh | “a . g 3 mn . Ss : ° a | 8 SIEIE| |2)4)el¢| 4/3 A | é. S]@ s/s lB) a) S/S) g]elele eee 7) oe | fj} + S| 2 = 3 4 | £ EB S15\% g Hise) s|a E S| |S a | 2 a/4/S/Fialole/Si/a] 8/44 MorDELLIDz. 1 1 | Diclidia .............-.. *].. * 10 | 10 | Pentaria................ xl *| al Tl rile) «ltl * Also the warmer parts of Europe, &c. 4 4 |Naucles ..............-- fe. | * * ; 1 | —/|Amaspis ................ * | * . . | Palearctic region generally. In America just enters Northern Mexico. a 1 |Cothurus .............. . * 4 4 | Tomoxia................ * *| * x|..| fe]... Also Europe, Australia, &c. 1 | — |Glipa .................. Pe ee a ee 2 Also Tropical Asia. 58 | 53 |Mordella .............. ae] ae) al Tl] «el e) el] ae] ep ael x Universal. Chiefly tropical regions. 1 | — | Glipodes ................ epee] epee | RL RL. Lee | ® . 1 1 | Conalia .............. 0.) 5. a | ® oe on Also Europe. 1 1 | Calyce ................ fee]... ]-. e * | * ; ; 75 | 72 | Mordellistena............. a Se ee Universal. Chiefly temperate regions. 158 | 147 RaIPIDOPHORID Az, 4 3 | Pelecotomoides ....... weelee * a * * | * Chiefly Tropical 8. America and Australia. 10 2 | Emenadia .............. x] «| «| «| T | «*] «| «] &]f «| «| «| Generally distributed, including Australia. 7 6 | Rhipidophorus (Myodites) ..| *] * | * * Widely distributed, except S, eae: area America and Australia. 21}. il eee | a | MELOIDz. 4 2 | Meloe .......... ee eee e>ael al tT) Tt] &] el & * | Widely distributed, except S. America and Australia. 3} —/|Henous ......... wb eeeee a] *] * ? Exclusively American. 1 | — | Cysteodemus ..........%. * | * 2 ao Megetra oes @ ewes en @ eoeoe ° * * 1 | —|Leonia............ ease en 2 1 | Horia.........0...0000e xi tle! titi] «| *«) «| «> *]..| * | Also tropics of Asia and Africa. 13 4 | Nemognatha ............ el «| «] «i +t] «il «| «| *]*|] *| *| Widely distributed, except Aus- tralia. 3 | — |Gmathium .............. x1] * | * — . ; 10 4 | Zonitis ...... beccescece el tie) Tt) tp] *«) *] ti] ey t Generally distributed, including Sanaa eae Australia. 39 11 + Not yet recorded. ae XV INTRODUCTION. Geographical Distribution (con.). El CrnTRAL AMERICA. “a { vA) oi 7 S .| 6 # | 3 3 = 2 | 5 en 8 = Hi ro) a Sis ia . ® 5 oS % Sieg a : . s ce 4 | 8 Fle s/./ 2/3/21 8] ./2/ 68], g | 2 sje ialegiSif| &le/ 41s) ela a g, ele /£/8/5/) 8/8) 6] #121 8/8 a|2 Sle /e)/8/ 4) 8/8) 8) 8] e|2| = & 2 “A/Z2 /O;/F/A/O 42 /O;ayTael;ais 39 | 11 MeELomz (con.). 13 | — | Tetraonyx ......--+-0+: eo ee ee ee Exclusively American, re oe tropical. 1 — | Eupompha .......---+--- *| x 2 1 | Calospasta .......+65 eee] we PR] “|: . : 5 Macrobasis ......++++-+0 xl al «*i..|..| «| *#/|*#]..]*%]..|..| Chiefly Mexico and temperate 15 < | Ma North America. — | Gnathospasta ........+-+> *1..| * “| aes : 5 3 Epicauta, oo econ aes ot we dae | cel oe | oe | | et & | ed oe | | | Generally distributed. In America, . chiefly Mexico and temperate regions northwards. 15 3 | Pyrota .... cece eee eee ala] «lt >t] «| «| «| «xf «*|..|..| Chiefly Mexico and temperate re- gions northwards. ? Exclusively American. 925 6 |Cantharis .......e-eeees xlael «el ti tl al tf] *) «ff «| «|... | Generally distributed. In America, chiefly Mexico and temperate 160 | 38 . | regions northwards. + Not yet recorded. The Tenebrionide, by far the most extensive of all the families of the series, include an immense number of species from all parts of the World. ‘The total number of species enumerated from within our limits is 870, belonging to 145 genera, of which 49 genera and 594 species are described as new; of the 145 genera, five are introduced and three have probably been recorded by mistake. ° The three subfamilies, the Tentyriinee (134 species—108 new), the Asidine (93 species—64 new), and the Tenebrionine (643 species—422 new), are represented by six, four, and twenty-one “ eroups ” respectively. ‘The ‘ Epitragides,’ the most numerous in species of the six “groups” of the Tentyriine, are exclusively American, and the largest and finest of the known species, some of which exhibit a very remarkable form of the thorax in the + In Gemminger and Harold’s ‘ Catalogue’ 4519 species are given for the united families Tenebrionids and Cistelidee INTRODUCTION. XVIiT female sex only, are peculiar to Mexico and the adjacent country to the northward ; fifty-three species, belonging to three genera, inhabit Central America. The ‘Zopherides ’ have their head-quarters in Central America, and the genera Zopherus and Nosoderma are amongst the most characteristic Heteromera of the region— Zopherus, with fourteen species, ranging a little north and also a little south of our limits; Nosoderma, with sixteen species, though more widely distributed, not extending north of Mexico, being replaced there by the allied genera Noserus, Phlwodes, and Phellopsis. The ‘Tentyriides, so numerous in genera and species in the Palearctic Region, contain comparatively few representatives in the New World, and the majority of the Central American species belong to one genus, Emmenastus. The other three groups, the ‘ Epiphysides,’ the ‘ Stenosides,’ and the ‘ Dacoderides,’ furnish only one, three, and one species respectively, all from Northern or Western Mexico. The sub- family Asidine includes four “ groups,” three of which are not represented south of Mexico ; the other group, the ‘ Nycteliides,’ is more widely distributed, being especially numerous in Chili, and three genera (two of which form the ‘ Branchini’ of Leconte and Horn) of somewhat uncertain affinities are referred to it—Branchus with two species, and Anectus and Oxinthas with one each *. ‘The ‘ Asidides,’ ‘ Cryptoglossides, and ‘ Coniontides’ are characteristic of the arid regions of the Southern and South- western United States and of the elevated plateau of Mexico, the genus Asida possessing fifty-five species in Mexico alone; Coniontis, with many species in California &c., is unknown as yet from within our limits, where it appears to be replaced by Eusattus, ten species of which occur in Mexico. The subfamily Tenebrionine includes a multitude of species, and twenty-one of its main “ groups” are represented in Central America; six of these “groups,” the ‘ Kutelides,’ ‘ Phrenapatides,’ ‘ Goniaderides,’ ‘ Cnodalonides,’ ‘ Misolampides,’ and ‘ Amarygmides,’ all containing forest species, do not extend north of Mexico; North America, however, has two groups, the ‘ Amphi- dorides’ and the ‘ Meracanthides,’ which are absent from the Central American fauna. The species of seven of the “groups” of the Tenebrionine live upon the ground, those of all the other “ groups” being found on trees or herbage, or under bark, in rotten wood, or in fungi attached thereto. The number of Central American species of the subfamily amounts to 643, belonging to 115 genera, 40 genera and 422 species being described as new. Of the various “groups,” the ‘ Blaptides,’ represented within our limits by two exclusively Central and North-American genera— Eleodes with sixty, and Embaphion with one, species in Mexico,—are characteristic * Psectrascelis has been incorrectly recorded by Solier as from Mexico. BIOL, CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, March 1893. C XVill INTRODUCTION. of the plateau of Mexicoand the adjacent country to the northward, Eleodes extending as far north as Hudson’s Bay and southwards to the Los Altos region of Guatemala, where a single species occurs. The ‘Scaurides,’ with one genus, Argoporis, the American representative of the well-known European genus Scaurus, of similar habits to the Blaptides, include ten species, most of which are confined to Northern Mexico, ‘The ‘ Pedinides’ are chiefly represented by one genus, Blapstinus, numerous in species (27) in Central America, as well as in other parts of America, north and south. The * Opatrides’ have only one typical genus in Central America, and that one of the most minute forms known, viz. Cnemeplatia, a genus also occurring in Europe, North Africa, Madeira, and North America. The ‘ Helopides’ are represented by a large number of species, especially in Mexico and Guatemala, belonging to the three genera Nautes (20), Tarpela (51), and Helops (18); the majority of them are much more brightly coloured than those inhabiting more northern regions, and the species of Nautes and Tarpela (with one or two exceptions) are fully winged. The ‘Trachyscelides, ‘ Crypticides,’ and ‘ Apocryphides’ include but few species, all of which live on the ground; amongst the Trachyscelides is the familiar genus Phaleria, which is represented on the Atlantic and Pacific coasts, one species being common to both. The ‘ Misolampides’ include various conspicuous genera, all confined to the forest-region, one of which, Hegemona, with no less than eighteen species, is characteristic of the Central-American fauna. The‘ 'Tenebrionides,’ ‘ Ulomides,’ ‘ Diaperides,’ ‘ Cnodalonides,’ and ‘ Strongy- liides’ are all rich in species in the forest-region, more especially in the “ tierra caliente’: the most characteristic genera are Nyctobates—the giants of the family,— Zophobas, and Nuptis (Tenebrionides); Ulosonia, Uloma, Sitophagus, and Doliema (Ulomides) ; Platydema—exceedingly numerous in species,—Liodema, and Hapsida (Diaperides); Acropteron and Cyrtosoma (Cnodalonides) ; Cuphotes (= Spheniscus), Pecilesthus, and Strongylium—the last-mentioned with no fewer than sixty-nine species (Strongyliides), The ‘Phrenapatides’ include the Passaliform-genus Phrenapates, peculiar to Central America and the northern part of South America, and a few small allied forms, all of tropical distribution. The ‘ Amarygmides,’ with a single American genus, Pyanisia, are represented by a few species, all found in or about fungi on rotten wood, usually in gloomy places in the forest. The remaining “groups,” the ‘ Bolitophagides,’ ‘Goniaderides,’ ‘ Heterotarsides,’ and ‘Talanides,’ require no special comment. Of the entire family Tenebrionide, the most characteristic genera of the Mexican and Central-American fauna, are:—of those living upon the ground, Asida (Mexico only), Hlwodes (Mexico and Guatemala only), Husattus and Argoporis (Mexico only), and Blapstinus ; of those living upon trees or herbage, Zopherus, Noso- -INTRODUCTION. xix derma, Emmenastus (excluding the apterous species), Nyctobates, Nuptis, Phrenapates, Platydema, Hapsida, Hegemona, Isaminas, Saziches, Oxidates (Mexico only), Nautes, Tarpela, Talanus, Paratenetus, Acropteron, Pyanisia, and Strongylium. Zopherus, Nosoderma, Hegemona, and Osidates, all numerous in species, have their head- quarters within our limits. The genera with the largest number of representatives are :— q. 12 102, 521 seticornis .........2.eeeee IL. 20 67, 504 obsoletus, G .....0+eeeeeee ¥. 15 102 undatus ........-2.e ee eee XXII 25 504 || Zophobas pedestris, ¢ .......--- Ne 16 103 nosodermoides .......+.-+> XXII 22 505 klingelhofferi, var. signatus, ° . ¥. 13 | 104, 521 Sicharbas lobatus .........20.05- II. 23 | 67,505 laticollis, So... ee ee ee eee Le 14 | 105, 522 Ologlyptus hebes .........-++-- XXII 23 506 || Tauroceras angulatum, d .....>-- V. 17 | 106, 523 sinuaticollis ..........60-- II. 19 69 || Nyctobates procerus, J ......-+-- V. 19 107 bicarinatus ........+-+5-- II. 18] 69,506 || Nuptis inquinatus, d.........+-- y, 21 | 109, 523 planatus.........-ee ee eens II. 16 | 69, 506 caliginosus, ¢ ....--eeeeeee ¥. 20 | 109, 523 Branchus obscurus........-+++6- III. 20 | 72,507 || —— validus, J ....... eee ee eee ¥. 22 110 opatroides ............ 008 XXII 24 507 tenebrosus, G «1... eee eee ¥. 23 110 Oxinthas praocioides, Q .......- III. 23| 72,507 |) GHatus chevrolati .........+-+.- y. 18 | 111, 523 Cryptoglossa mexicana .......... III. 21 73 || Hicetaon frontalis ...........+-+ VI. 8 | 112, 524 Eusattus nitidipennis............ III. 22 75 || Sthenobcea apicalis, 9 Saiki ew cinie ce Vi. ul 113 depressus .......0.e ee eens IV. 1 75 || Glyptotus nitidus ...........6-- Vv. 24 113 Eleodes eschscholtzi, J .......... III. 24 | 77,511 || Isicerdes occultus .............. VI. 2 114 spinipes, So... eee eee eee IV. 2| 77,511 || Hesiodus longitarsis, ¢ .......... VI. i 1% exarata, Q «1... eee eee eee IV. 3 78 debilis .......... 022 eee VI. 6 ii7 amaura™®, So... ee ee ee eee IV. 4| 81,514 || Ilus apicicornis ............. a. VI. 3 118 —— Oa IV. 5 | 81,514 || Choastes purpureus$............ VI. 4 | 119, 526 rotundicollis, ¢ ........-. IV. 6 | 82,514 angulicollis .............. Vi. 5 119 — y Qe eee e eee eens IV. 7 | 82,514 || Rhacius sulcatulus.............. Vi 9 | 121, 526 curta, Goo. e ee ee ee eee IV. 8 82 quadricollis .............. VL. 10 121 suleatula ...........00005 IV. 9 | 83,514 || Blapstinus tibialis, f............ VI. 19 125 dilaticollis, ¢ «1... eee cee IV. 10 83, 515 grandis, Gd... 1... eee eee ees VI. 18 125 ponderosa, d...... eee eee IV. 11} 84,515 fortis ||, Go... cc cee eee eee VI. 16 | 125, 526 ruida, Go .. wee ee ee eee eee III. 25 | 84,515 buqueti, Sw. eee eee eee VI. 17 128 angusta, Sw... eee eee IV. 12 | 85,515 || -—— sulcipennis............-... VI. 21 129 sonore (?= vicina, Lec.), 5 .. IV. 13 | 85,516 nitidus, Gd... . ec ee eee eee Vi. 15 130 — — chihuahuensis ............ IV. 14 86 atratuS 26... ..e eee eee eee VI. 20 | 181, 528 calcarata, S 1... eee eee ee IV. 15 86 emmenastoides ............ VI. 22 131 —— erratica, J... eee ee eee IV. 16 87 || Notibius affinis, ¢ .............. VI. 11 | 132, 529 —— longicornis, ¢ ............ IV. 17 | 87,516 || Conibius brunnipes ............ VI. 12 | 133, 530 forreri, Go... eee eee eee ee IV. 18 | 88,516 || Ulus hirsutus.................. VI. 13 133 —— levigata, S «1... eee eens IV. 19 88 lineatulus .............-.. VI. 14 134 —— solierl, ¢ ...... see ee eee IV. 20 89 || Penichrus blapstinoides, g ...... Vi, 23 135 —— sallai, G 1... see e ee eee eee IV. 21 89 || Trichoton curvipes, ¢ .......... VI. 95 136 ——— impolita, d ...... eee eee IV. 22 90 || Cnemeplatia laticollis............ VI. 24 136 —— higei, dose ee eee eee eee IV. 23 91 || Crypticus maculatus ............ VII. 1 | 138, 531 —— sulcata, go... cece ee eee IV. 24 | 92,517 || Daochus mandibularis .......... VIL. 2 | 140, 531 goryi(=seriata, Lec), d....| IV. | 25 93 || Peneta obtusicornis ] .......... VIL. 3 | 142, 531 Argoporis alutaceat, d.......... V. 1| 94,518 || Cleolaus sommeri .............. VIL. 4. : 142 rufipes, do... eee ee eee eee ee V. 2; 94,518 || Telchis clavicornis .............. VIL. 5 143 crassicornis, ¢ ...+.+-+-+.+- V. 3 94 || Phthora armata, d....-......... XXIII 2 Sag atripes, Go... . eee eee eee V. 4 | 95,519 || Zypoetes epieroides.............. XXIII 3 533 cavifroms, d ..--.e eee eee V. 5 | 95,519 || Arrhabeus convexus ............ VII. 6 145 (Enopion gibbosus .............. V. 8 99 || Echocerus analis, ¢ ............ VII. vé 146 Centronopus suppressus, gd ...... V. 9 100 || Sicinus guatemalensis, ¢ ........ VIl. 10 147 bimaculatus, ¢............ XXIII 1 521 || Iccius cephalotes, ¢ ............ VIL. 8 148 * T[leodes maura on the Plate. + Argoporis bicolor on the Plate. t Pyres metallicus on the Plate. § Choaspes purpureus on the Plate. || Blapstinus interstitialis on the Plate. {| Peneta panamensis on the Plate. LIST OF PLATES. Plate. Fig Page. Plate Fig Page. Iccius cylindricus, g ............ VII. 9 | 148, 534 || Platydema concolorf............ IX. 11 | 2038, 539 Alegoria salleai, g .... ......... VII. 11 | 149, 53 venustum .............05. IX. 12 204 Pheres batesi .................. VII. 12 150 || Liodema kirschi................ IX. 13 205 Uleda grossa ...............00. VIL. 13 151 zimmermani .............. IX. 14 206 Uloma mexicana, ¢ ............ VIL. 14 152 COMNEXUM ...........0 000s IX. 15 207 retusa, var. dimidiata, ¢.... VII. 15 154 || —— , Var. cruciatum ...... IX. 16 207 armata, Ji... ee eee eee VIL. 16 154 S€ITICOING ........ 0.00 ee ee IX. 17 207 spinipes, ¢ ..........000. VIL. 17 155 flavo-variegatum .......... IX. 18 208 —— divergens, d.............. VII. 18 155 || Stenoscapha jalapensis .......... IX. 19 208 Doliema frontalis, g¢ ............ VIL. 24 159 || Paniasis dilatipes, Gg ............ IX. 22 209 angustata, d.......... 000. VII. 25 159 || Lelegeis eneipennis, ¢ .......... IX. 23 210 Sitophagus fuliginosus, ¢ ........ VIII. 1 161 || Cosmonota nigripes ..........:. IX. 20 210 dilatifrons, ¢ ............ VII. 22 162 pubescens ........-....0.. IX. 21 210 Ulosonia dejeani, ¢ ............ VIL. 19 165 || Hapsida chrysomelina, 9 ........ IX. 24 211 Metulosonia reflexa ............ VII. 20 | 166, 536 seriato-punctata, Q ........ Ix, 25 212 Phayllus minutus .............. VIL. 21 167 terebrans, Oo... see. eee IX. 26 | 214, 539 ARsymnus nitidus, d............ VIL. 23 168 boucardi, 9, var........... IX. 27 215 Mophis marginicollis ............ VIII 3 169 a IX. 28 215 cyneoides* .............. Vill 2 | 162, 536 | Gonospa phedonoides, § ........ IX. 29 217 Corticeus rufipes, ¢ ............ VIII 4 171 || Enneboeus uniformis ............ XXIII 4 540 pallidipennis .............. VIII. 5 173 | Phaleria guatemalensis .......... X. 1 | 218, 541 erassicornis .............. VIII 6 173 dytiscoides................ X. 2 | 218, 541 Arrhenoplita clavicornis, g¢ ...... VU 7 176 || -—— neotropicalis .............. X. 3 220 distans, Go... . ee eee eee VIII 8 178 inmsularis ................ X. 4 | 221, 541 cioides, ¢ ....... 0... eee VIII 9 180 || Bycrea villosa, ¢ ............4. X. 5 | 222, 541 Saptine ovata ...........0-0005. VII 10 181 || Scaptes tropicust .............. X. 6 | 223, 542 Platydema excavatum, f ........ Vill 11 | 184, 538 || Xenius scabripennis ............ X. 7 224 undatum, ¢ ..........66.. VIII 13 185 || Calymmus variegatus............ X. 8 225 9 VAT., Qo Lee eee ee VIII 14 | 185 || Ozolais verrucosa .............. X. 9 226 rodriguezi, ¢ ............ VIII 15 185 lutosa .. kee X. 19 227 —— mexicanum .............. VIII 12 187 elongata, ¢ ...... cece eee X. 11 228 diophthalmum ............ VIII 16 | 193,538 || Goniadera oculata .............. X. 12 230 transversum .............. VIII 17 194 nicaraguensis ............ X. 13 230 bisignatum .............. VIII 18 195 || —— pilosa.................05. X. 14 230 hOVeL .. eee ee eee VIII 19 | 195, 588 alternata, J... eee eee ee X. 15 | 231, 542 sexnotatum .............. VIII 20 196 || Xanthicles caraboides .......... X. 16 232 guatemalense ............ VIII 21 197 || Aimymone crenata.............. XXIII. 5 542 ——ornatum ................ VIII 22 197 || Aneedus villosus...........,.... XXIII. 6 543 pretiosum ................ VIIl 23 197 mexicanus................ X. 17 234 panamense................ VIII 24 198 marginatus .............. X. 18 236 tibiale ........ 02.00.00 Vil 25 198 apicicornis................ X. 19 236 y 26, —— brevicollis, ¢ ............ X. 20 236 —— 15-maculatum ............ VIII. 2” } 198 setulosus ................ X. 21 | 237, 544 nigromaculatum .......... IX. 1,2 199 || Paratenetus tibialis, f .......... X. 22 | 239, 544 Dreve ..... cee ee ee eee Vill. 28 200 nigricornis, ¢ ..........4. XXIII. 7 544 —— versicolor ..........0 eee IX, 3 200 ruficornis, g.........0000. X. 23 239 tricolor ..............000. IX. 4 200 villosus, ww... eee ee eee X. 24 240 -—— biplagiatum .............. IX. 5,6} 201, 539 constrictus, ¢ ............ XXII. 8 546 —— dimidiatum .............. IX. 7 202 tuberculatus, ¢ .......... X. 25 242 ——- elegans .................. IX. 8 202 denticulatus, Q............ X. 26 243 lucens .......-.-..0-0.-- Ix. 9 202 sexdentatus, d.........2.. XXITI 9 546 cordovense...........2000- IX, 10 | 203, 539 || Cyrtosoma denticolle ............ XI. 1 244 * Sitophagus (?) cynceoides on the Plate. + Platydema unicolor on the Plate. t+ Scaptes syuamutatus on the Plate. PLATES. XXX Plate Cyrtosoma decem-lineatum ...... XI. Othryoneus erotyloides .......... XI. Camaria parallela, J............ XI, Blapida neotropicalis, ¢ ........ XI. Mophon tinctipennis, g.......... XI. Epicalla varipes, G ....-------s XI. we bd sipise tee eeaseens XI. cupreo-nitens ...........- XI. Moeon panamensis, Q .......... XI. Acropteron belti, ¢ ....-..-.0e XI. miklini, 6 «1... .. eee ee eee XI. agriloides, J.......e se eee XI. calearatum, SJ .......eeeee XI. longipenne, ¢ ............ XI. ——- mexicanum, oO .... eee XI. Ischyomius singularis .......... XI. Pseudapocrypha lacordairii ...... XI. Saziches subcaudatus, ¢ ........ XI. Oxidates planicollis, ¢ .......... XI. princeps, ¢ ..........000- XI. gibbus ....... eee ee ee eee XXIII. Mitys inflatus...............04. V. politus* .............00. V. Isaminas gibbipennis, Q ........ XI. Hegemona bicaudatus, 2 .... XI. compressus, J ........00.. XII. lineatus, ¢ ...... ee eee eee XI. —— niger, d .... eee ee eee eee XII. —— zunilensis, 2 .............. XI. —— angustatus, S .........0.. XII. —— chiriquensis, 2............ XII. —— guatemalensis, 2 ......... XI. costaricensis, Q .......... XII. interruptus, 2 ............ XII. Nautes fervidus, Q ............ XII. tinctus, Qo... ... eee eee XII. belti, Doe. eee eee eee eee ee XII. varlans, Go... . eee eee ee XII. —— antennatus, d ............ XII. —— breviceps ................ XII. —— striatipennis, ¢ .......... XII. — chrysomeloides, ¢ ........ XII. —— versicolor, 2 ...... cece eee XII. —— leviventris, 9 ............ XII. nitidissimus, g............ XII. nodulosus, ¢ .......e.00e XII. enoplopoides, ¢ .......... XII. Tarpela tenuicornis, 2 .......... XII. pulchra, ¢ wwe. ee ee ee eee XXIII. ineequalis, d..........000- XII. torrida, S.... eee ce ee eee XII. corpulenta.............00 XII. —— thoracica ................ XII. LIST OF Fig Page. 2 244 3 246 4 246 5) 247 6 248 7 249 8 250 9 250 10 251 11 253 12 254 13 | 255, 547 14 255 15 256 16 256 17 | 259, 548 18 260 22 262 19 264 20 | 265, 548 10 548 7 97 6 {530 520 21 267 24 | 270, 549 1 271 23 271 2 271 26 272 3 272 4 | 2738, 549 25 274 5 275 6 275 7 278 8 279 9 280 10 | 281, 550 11 281 12 282 13 | 283, 551 14 234 15 284. 16 285 17 286 18 287 19 287 20 289 12 501 21 290 22 291 23 292 24 293 Plate. Fig. Page. Tarpela catenulata, ¢ «1. ee eeee XXIII. cee 552 Gontata.. ..-4 ene a ese Gaes ss EGE i 25 293 foveipennis .....-++++-+.- XII. 26 294 exiMid, 0 .-e0e4 sean ee ees XIII 1 295 Verepacis, do... eee ee eres XIII 2 995 gtYR ices cages eeosa ees XIII é 296 sotigera, Q .... seca cerns XI 4 297 SOCIA, Go ew Ghee cere et es XIII 5 299 hispidula .......-----++5- XII 6 299 subparallela, g.....-+++.+-- XIII 7 | 300, 554 fallax, 2 occ gece dese ees XIII. 8 301 cupreo-viridis, J ....++-+.. XIII 9 | 302, 504 tropicalis, J 1... eee ee ees XIII 10 304 subvittata, Q ...-. eee eee XIII ii 305 depressa, S sss. sree eeee XIII 12 | 306, 555 ——- crassipes, ow... ee ee eee ee XIII 13 306 allardi .... eee eee eee eee XIII 14 307 ——amabilis ..........+----- XIII 15 308 silvicola, ¢ «1... ee eee eee XIII 16 309 fragilicornis, ¢.......+.--- XIII 17 309 cisteliformis, .........-.- XIII 18 310 totonicapamensis, Q........ XIII 19 311 docilis ....... eee ee eee eee XIII 20 312 Helops gracilicornis, 2 .......... XII 21 313 cavifrons, 2 ........++.--. XII ve 313 exsculptus, Sw... eevee. XIII 23 314 rugiceps, So .....e ee eee eee XIII 24 315 coxalis, dw... eee eee eee ee AL. 25 B17 enitesceMS ...... 0.00 ee eee XXIII. | 13 557 panamensis, J ...... esas XII 26 319 ——- sumptuosus, d ....--..e ee. Aili. 27 320 Mentes ruficollis, Q ............ XXIII. | 14 599 fusiformis, Q ............ XXIII. | 15 560 Talanus neotropicalis, ¢ ........ XIV. 1 | 322, 561 laticeps, Fw. ee ee ee ee eee XIV. mS 325 guatemalensis, g .......... XIV. 3 326 apterus, Dd... .... see eee eee XIV. = 328 Pyanisia longicollis ............ XIV. 5 331 Cuphotes jansoni, 9 ............ XIY. 6 333 unicolor, G wee. e eee eee XIV. 7 334 Peecilesthus nigropunctatus, ¢ ... XTY. 8 336 variipes, Gwe ee ee eee eee XIV. 9 337 fragilicornis, Q............ XIV. 11 338 — 5 Oy VAL. fe ee eee eee ee XIV. 12 338 laticollis, Q ...........0.. AIV. . | 18 339 immaculatus, ¢ .......... XIV. 13 340 —— leviceps, 9 ...........0.. XIV. 14 340 miaklini, S «1... eee ee eee XIV. 15 341 cupripennis .............. XXIII 47 562 Strongylium maculicolle, ¢ ...... XIV. 16 342 hopfneri, ¢ ..........000, XIV. 17 343 —_—— , var. pectorale, g...... XIV, 18 343 —— chontalense, 9 ............ XIV. 19 344 gibbum, ¢ ...... eee XIV. 20 344 * Mitys levis on the Plate. LIST OF PLATES. Plate. Fig. Page. Plate. Fig Strongylium clavicorne .......... XXIII. | 16 562 cine XIV. | 23 345 CIsTELIDE. —— semistriatum.............. XV. 1 345 || Lobopoda gigantea, Q .......... XVII. 1 —— excavatum, d ............ XV. 2 | 346, 563 asperula, GS wo... ee eee eee XVII. 2 ———- canaliculatum, 9 .......... XV. 3 346 || —— acutangula, § (cedeagus)... XVII. 3 —— viridipes, ¢ ...........4.. XV. 4 347 tristis, ¢ (edeagus)....-... XVII. 4 lgnitum, ¢ wo... eee eee XV. 5 348 mexicana, d....... eee eee XVII. 5 —— tinctipes, 2 .........0.... XV. 6 349 calcarata, Go... eee ee ees XXIII. 23 —— exaratum, 9 .............. XV. 7 350 || —— panamensis, S ............ XVIL.. 6 —— fossifrons, gd ..........+44. XV. 8 351 || —— mucronata, Q .......-.... _ XVII. 7 ——— varlicorne, 9 .............. XV. 9 352 || —— apicalis, J (cedeagus) ...... XVII. 8 costaricense, d .........00. XY. 10 353 || —— atrata, 5 (cedeagus)........ XVII. 9 -—— conicicolle, 2 ............ XIV. 25 354 || —— subparallela, ¢ (cedeagus) XVII. 10 colombianum, 2 .......... XV. 11 354 || —— seriata, ¢ (cedeagus)........ XVII. 11 —— langurioides, 9 ............ XV, 12 355 || —— convexicollis, ¢ (cedeagus) . XVII. 12 —— ventrale, 2 .............. XVI. 1 356 || —— oblonga, ¢ (cedeagus) ...... XVII. 13 eribripes, Q ........ ce eee XIV. 24 356 puncticollis, ¢ .........0.. XVII. 14 frontale, Q .......-...... XV. 13 357 || —— yucatanica, 5 (cedeagus) ....} XVII. 15 —— gerstaeckeri, 9............ XIV. 22 357 || -—— attenuata, ¢ (cedeagus) XVII. 16 —— Viriditinctum, 9 .......... XVI. 4 359 tropicalis, ¢ (cedeagus)...... XVII. | 17 eminens, Q .... ..... cee XIV. 21 359 femoralis, J... ee ee eee eee XVII. 18 auratum, Sd ...........0.. XVI. 2 360 teapensis, ¢ (cedeagus) XXIII. | 24 ——atrum, gd ....... eee ee XV. 14 360 || —— simplex, ¢ (vedeagus) ...... XVII. | 22 opacipenne, d ............ XV. 15 361 || —— opaca, Sw... ee eee eee eee XVII. 23 bivittatum, ¢ ............ XV. 16 361 || —— hirta, g (cedeagus) ........ XVII. 19 aulicum, Q oo... . cee eee XV. 17 362 || —— sculpturata, ¢ ............ XVII. 20 decoratum, 2,var. ........ XV. 18 363 || —— leevicollis, Gd .... 0... ee eee XVII. 21 panamense, 2 ............ XV. 19 363 proxima, ¢ (cedeagus) ...... XVIII. 1 nitidiceps, Q.............. XV. 20 364 jalapensis, 3 (cedeagus) ....| XVIII. 2 ——— Varlans, 9................ XY. 21 365 || —— parvula, ¢ (cedeagus) ...... XVIII. 3 —— > O, Var. we. ee XV. 22 365 minuta, ¢ (ceedeagus) ...... XVIII. 4 —— misantle, dg ...........0.. XY. 23 367 tenuicurnis, ¢ ....... ee eee XVIII. 5 —— -—, d, var. ....... eee XVI. 3 367 || —— viridis, d ...... se. cee eee XVIII. 6 cinctum, Q ...........08, XV. 24 368 || —— foveata, Di... cece eee eens XVIII. 7 marginale, Q ............ XV. 25 368 || ——nitens, Q ...... ec. cee eee XVIII. 8 suturale, ¢ ........ eee eee XVI. 5 368 || —— irazuensis, ¢...-.......--- XVIII. 9 curticorne, ¢ «we. eee ee XVI. 6 369 || —— viridipennis, g ............ XVIII. 10 ramosum, ¢ ........42000. XVI. 7 369 || —— eneipennis, ¢ (edeagus)....| XVIIT. | 11 —— blandum, 2 .............. XVI. 8 370 || —— cariniventris, ¢ (cedeagus) ..| XVIII. 12 impressicolle, J .......... XVI. 9 370 || —— obsoleta, § (cedeagus) ...... XVIII. | 13 armatum, var., Q.......... XVI. 10 371 glabrata, J... eee eee eee XVIII. | 14 brevipes, GS «1... ee ee eee XVI. 11 372 || Temnes ceruleus, ¢ .........0-- XVIII. 15 gregarlum, @ ...........4. XVI. 12 373 || Allecula castaneipennis, Q ...... XVIII. | 16 carinipenne, d .........0.. XVI. 13 374 rugicollis, d ... eee ee eee XVIII. | 17 —— punctipes, J .......-...0.. XVI. 14 375 verepacis, Q...... 2. eee eee XVIII. | 18 —— subcostatum, ¢ .....-.... XVI. 15 375 ferox, So cece cece eee eens XVIII. | 19 apicicorne, Sw... ee ee eee XVI. 16 376 gaumeri, ¢ (cedeagus) ...... XVIII. | 20 fragile, G wo. eee ee ee eee XVI. 17 377 pilipes, do... eee eee eee XVIII. 21 Otocerus dilaticornis, ¢.......... XVI. 18 378 belti, Qo. cc eee ee ee eee XVIII. 22 torole, Sov... ee eee eee eee XVI. 19 378 depressa, So .... eee eee eee XIX. 1 nicaraguensis, .......... XVI. 20 379 opacipennis, ¢ (cedeagus) XIX. 2 interruptus, Q ............ XVI. 21 380 angustata, ¢ (edeagus) ....| XIX. 3 hamatus, S ........e0.0e, XVI. 22 381 laticeps, Qo... ee eee eee eee XIX. 4 MICTOPS ..... ee ee ee ee eee XVI. 23 381 || Alethia sallai, ¢ ..........080. XIX. 5 impressipennis, 9 .......... XVI. 24 382 longipennis ...........+.- XIX. 6 Pseudotocerus attenuatus, 9 ..:... XVI. 25 383 subnitida, gd .....- ee eee XIX. 7 ——- azteca, J wns. cece eee eee XIX. 8 395, 400, 402, 394 394 564 396 397 398 403 412 418 | XXXll LIST OF PLATES. Plate Fig Page Plate. Fig Page. Alethia lepturoides, ¢ .......--- XIX. 9 419 || Cistela decepta, 5 (cedeagus)...... XX. 23 454 hégei, 3 (cedeagus) ........ XIX. 10 420 chiriquensis, ¢.....-+++-++- XX. 24 454 Theatetes basicornis, ¢ .......+.- XIX. 11 420 delitescens, ¢ (cedeagus) .... XX. 25 455 Charisius fasciatus, 6 .......-.. XIX. 12 421 || —- occulta, GD iveee eter ence eres XX. 26 455 a LC XIX. 13 421 ovipennis, do... eee ee eee XXIII. | 19 569 picturatus, G6... ee ee eee XXIII. | 21 565 || —— alternans, d ...+-++++++++- XXI, 1 456 zunilensis, G.....-. eee eee XIX. 14 422 fragilicornis, 9 ........++-- XXI. 2 457 salvini, Go... eee ee ee ee eee XIX. 15 423 || Isomira obsoleta, ¢ ...-.--- cers XXI. 3 457 Narses subalatus, ¢ .........-.- XIX 16 424 subeenea bene e eee eens XXI. 4 458 Hymenorus occidentalis, ¢ ...... XIX. 17 425 || Erxias violaceipennis, re XXI. 5 460 brevicornis, ¢ (cedeagus) . XIX. 18 426 || Prostenus panamensis, 5 ....--.- XXI. 6 46] tarsalis, ¢ (eedeagus) ...... XIX. 19 426 || Lystronychus piliferus .......... XXI. 7 462 oculatus, S .......- ee eee XIX. 20 427 purpureipennis ...........-- XXII. 8 463 sordidus, ¢ (cedeagus) ...... XIX. 22 427 scapularis, ¢ «1. sees sree XXI. 9 463 ——- PIN], Swe. eee eee ee eee XIX. 21 428 || Xystropus californicus*.......... XXI. 10 | 464, 570 flohri .... eee eee eee XIX. 23 429 fallax... cece eee ee ee XXI. 11 464 tibialis, Go... ee eee eee eee XIX. 24 430 lebasi..... 0. ee eee eee XXI. 12 465 | hispidulus, ¢ (cedeagus) .. XX. 1 431 || Cteisa pedinoides ...........--. XXI. 13 | 465, 570 foveiventris, ¢ (cedeagus) .. XX. 2 432 similis, j (cedeagus)........ XX. 3) 432 . badius, ¢ (wedeagus)........ XX. 6 | 483, 566 vEENDe longicollis, ¢ ............ XX. 3 | 434,566 |) Othnius senecionis.............. XXI. 14 467 colonoides ............2-- XX. 4 435 antennalis, ¢ ..... eee eee XXI. 15 467 brevipes, ¢ 2... ... eee eee XX. 7 435 multiguttatus ............ XXI. 16 468 ruficollis ...........-.8.. XX. 8 438 intricatus ..........0.008- XXI. 17 468 guatemalensis ............ XX. 9 439 || —— mexicanus, Q ............ XXI. 18 469 villosus, Q .....e. ee ee eee XX. 10 440 sticticopterus.............. XXI. 19 469 deplanatus, ¢ ............ XX. 11 440 Manes angusticollis ............ XXIII 20 567 Nunroxw x Polyidus meridionalis, ¢ ........ XX. 13 442 ° Menes meridanus .............. XX, 12 442 || Nilio thomsoni ................ XXI. 20 47] Menceceus crassicornis, d........ XX. 14 444 chiriquensis .............. XXI. 21 471 eequalis, So... eee ee eee ee XX. | 15 44d Diopcenus compressicornis, ¢ XX. 16 445 M Pitholaus helopioides, ¢ ........ XX, 17 446 ONOMMID 28. Amaropsis annulicornis, Q ...... XXIII. | 18 568 | Hyporhagus opuntie ............ XXI. 22 473 Phedius chevrolati, Q .......... XX. 18 447 durangoensis.............. XXI. ao 473 hirtus, Q ..... ee eee eee XXII. | 26 568 || —— emarginatus, d............ XXI. 24 474 carbonarius, 9 ............ XX. 19 448 || —— obliteratus................ XXI. 25 475 eylindricollis, Q .......... XX. 20 449 | ——suturalis ............0... XXIII. | 22 571 Telesicles cordatus.............. XX, 21 451 ferrugineus .............. XXIII. | 25 571 Cistela nigricornis, ¢ .......... XX. 22 452 || Aspathines ovatus .............. XXI. 26 476 * Xystropus fulgidus on the Plate. ANXIY ERRATA ET CORRIGENDA. Page Line 3 14 after atratus insert (Tab. I. fig. 12.) 37 37 after singularis insert (Tab. I. fig. 13.) 71 + dele the words scutellum broad, triangular. 71 24 for Ticomavaca read Tecomavaca. 83 24,35 for 2 read S. 91 28 for ii. read iii., and for 1830 read 1834. 92 22 for ii. read iii. 93 7 for Rinconado read Rinconada. 93 13 for Tempico read Tampico. 103 37 for Klingenhéffer read Klingelhéffer. 108 1 for Derilis read Deriles. 150 28 for includes read include. 158 23 for This is the smallest read This is one of the smallest. 184 26 before Horn insert Platydema excavatum. 194 5 for rather coarsely read very finely. 222 3 for Matamoras read Matamoros. 239 40 for 2 read 8. 334 36 before Lac. insert Spheniscus cinctus. 561 35 for héfpnert read hdpfnere. 494 1 for figg. 15, 3 read figg. 16, S. 458 33 for Mexico read GuaTEMALA. 496 18 for Asida dispar (p. 59) read 20. Asida dispar. 511 7 for obsoletus read obliteratus. 522 5 for Karsch read Kirsch. 543 27 for interstitialis read punctatissimus. 550 38 for incilis read stabilis, BIOLOGIA CENTRALI-AMERICANA. ZOOLOGIA., Class INSECTA. Order COLEOPTERA. Tribe HETEROMERA. Fam. TENEBRIONIDA. Subfam. TENTY RIIN A. Under this subfamily are included those species in which the ventral segments are entirely corneous (without a coriaceous hind margin to the third and fourth), and the intermediate coxee without trochantin. ‘The coriaceous hind margin to the third and fourth ventral segments, though apparently of trivial importance, appears to be a good character, and the different groups may be readily separated by it. The arrangement is the same as that used by Leconte and Horn for the North-American species. Group TENTYRIIDES. This group will include Leconte and Horn’s tribes Gnathosiini and Thinobatini, the former represented in our country by Zriorophus and Trientoma, the latter by Lury- metopon and Emmenastus; and some genera of doubtful position, one or two of which will not fall satisfactorily into any of the groups, tribes, or subfamilies proposed by Lacordaire, Leconte, or Horn. The Tentyriides are very poorly represented in Central America, the winged species of Emmenastus alone being at all numerous. TRIOROPHUS. Triorophus, Leconte, Ann. Lyc. New York, v. p. 141 (1852) ; Lacord. Gen. Col. v. p. 34 (1859) ; Horn, Revis. Ten. N. A. p. 258 (1870); Lec. & Horn, Class. Col. N. A. p. 362 (1883). Four species from the Southern States of North America (from Arizona, Texas, BIOL, CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, July 1884. BB 2 HETEROMERA. and California) constitute this genus; two of these species occur also within our boundary. og : They are found beneath stones in arid districts. A closely allied genus (Stidia, Horn) is also found in California. 1. Triorophus levis. Triorophus levis, Lec. Ann. Lyc. New York, v. p. 141'; Horn, Revis. Ten. N. A. p. 259(1870)*; Lac. Genera, t. 48. f. 4. Triorophus rugiceps, Lec. loc. cit. p. 142°. Hab. North America 123%, Tejon in California to the western base of the Rocky Mountains in Arizona.—MeExico, Northern Sonora (Morrison). 2. Triorophus nodiceps. Triorophus nodiceps, Lec. Proc. Acad. Phil. vi. p. 447*; Horn, Rev. Ten. N. A. p. 259 (1870) ’; Thoms. Arcana, i. t. 13. f. 7. Hab. Norra America 12, Texas.—Mexico, Monclova in Coahuila (Dr. Palmer). Two examples from Monclova agree fairly well with the description of 7. nodiceps, except that they have the anterior angles of the thorax a little more acute and swollen. TRIENTOMA. Trientoma, Solier, Ann. Soc. Ent. Fr. iv. p. 256, t. 5. f. 7-10 (1835) ; Lac. Gen. Col. v. p. 35 (1859). Two species of this genus are recorded from Cuba and St. Domingo; others from the West Indies, undescribed as yet, exist in collections, and we now have to add two from Mexico. Allied genera (Triphalus and Trimytis) occur in North America. 1. Trientoma mexicana. Ovate, smooth, dull black, opaque. Head almost impunctate, coarsely wrinkled on each side; prothorax strongly transverse, widest just before the base, slightly rounded at tho sides, narrowed in front, smooth ; elytra with nine rows of very indistinct almost obsolete rounded punctures, the punctures a little more distinct towards the sides, obsolete behind and towards the suture. Length 6-7 millim. Hab. Mexico (coll. F. Bates). Two examples. Extremely close to T. sal/@i from St. Domingo, and only differing therefrom by being a little more opaque, the sides of the thorax straighter, and the antenne not quite so stout. 2. Trientoma rugifrons. (Tab. I. fig. 1.) Black, shining. Head strongly trilobed in front (the middle lobe of the epistoma long and the lateral lobes swollen and prominent), coarsely and closely punctured, and strongly wrinkled longitudinally on each MESABATES.—PESCENNIUS. 3 side; prothorax strongly transverse, broadest at the base, feebly rounded at the sides, narrowed from the base to the obtuse front angles, closely and finely punctured; elytra rather long, a little wider than the thorax at the base, with nine rows of shallow rounded punctures distinct to the apex, the outer row almost obsolete, the interstices very finely, closely, and almost imperceptibly punctate ; antenne stout. Length 8 millim. Hab. Mexico (coll. F. Bates). One example. Closely allied to a nondescript species from St. Domingo. MESABATES. Mentum transverse, subangular at the sides, narrowly emarginate in front, and closely fitting to the toothed broad side pieces of the submentum; mandibles not toothed on the upperside, bifid at the apex, promi- nent and clasping the projecting labrum; ligula completely hidden; maxillary palpi stout, the last joint narrowly triangular; head very broad, the central lobe of the epistoma almost truncate and slightly deflexed in front, the lateral lobes rounded, very prominent and projecting in front as far as the central lobe; eyes transversely oval, partly divided by the lateral lobes, sharply carinated within; prothorax transverse, about twice as broad as long, rounded at the sides, as wide as and fitting closely to the elytra; elytra convex, smooth, with rows of fine punctures; antenne long and stout, second and fourth joints subequal, third half as long again as the second, fifth to tenth about equal in length, but widening out- wardly, ninth and tenth almost transverse, eleventh smaller, rounded; legs rather short and stout; inter- coxal process pointed in front; the tarsi with short stout, spiny, hairs beneath, not sulcate; prosternum narrow, declivous behind; epipleure narrowing from the shoulders, distinct almost to the apex; scutellum very small, transverse; metasternum short, impressed in the middle; middle coxal cavities closed externally. One species from Mexico. I know of no very near ally to this; the general form is not unlike a small Pachychila. It may be known from its allies in the Thinobatini and Gnathosiini, Horn, by its very broad head ; it is perhaps best placed in the latter group, the epistoma being trilobed. 1. Mesabates latifrons. (Tab. I. fig. 3.) Oval, rather broad, dull black, rarely reddish brown. Head closely but not very finely punctured (a little more closely along the anterior margin), broadly impressed transversely in front, the vertex with two small rounded tubercles ; prothorax transverse, the angles obtuse and almost rounded, narrowing from the broadest part a little before the base to the front, slightly narrowed behind, base very feebly bisinuate and almost straight, anterior margin broadly but feebly emarginate, closely and finely punctured, the disc with a short impressed line in front extending to the anterior margin; elytra as wide as the thorax at the base, the base almost straight, two and a half times as long as the thorax, slightly rounded at the sides, scarcely widening from the base, with regular rows of very fine shallow punctures distinct to the apex. Beneath slightly shining, closely and rather coarsely punctured, the ventral segments with longitudinal scratches and finer punctures. Length 7-73 millim. Hab. Mexico, Tehuacan (Hége), Puebla (Sad/é). Sent in some numbers by Hoge. PESCENNIUS. Mentum small, transverse, angular at the sides, truncate in front, fitting closely to the short triangular side pieces of the submentum; mandibles sharply toothed on the upperside, bifid at the apex; labrum almost BB 2 4 HETEROMERA. hidden in repose, clasped by the mandibles; ligula scarcely visible; head broad, feebly trilobed, almost rounded in front, the epistoma a little produced, rounded, and deflexed in the middle, the lateral lobes rounded and a little swollen but not prominent; prothorax very short and transverse, closely fitting to the elytra; elytra ovate, with regular rows of coarse punctures, the apices finely mucronate, villose ; antenne long, thin, third joint about half as long again as the second, fourth to eighth decreasing in length, ninth to eleventh larger and broader, the ninth and tenth triangular, the eleventh ovoid ; apical joint of maxillary palpi narrowly and feebly triangular; legs short, the tarsi stout, densely clothed with short hairs beneath ; metasternum short; intercoxal process pointed in front; prosternum very narrow, declivous behind, not contiguous to the mesosternum ; epipleure rather broad at shoulders, narrowing behind and not reaching the apex; eyes almost rounded; scutellum transverse, very small; intermediate coxal cavities closed externally. Founded upon one Mexican species. This genus is allied to Hurymetopon, Trimytis, and Emmenastus, though differing greatly from all of them in the structure of the antenne, and by its hairy clothing; allied also to Hdrotes and more distantly to Amphidora &c., which are similarly clothed with long hairs. The legs are compa- ratively short and stout. The antenne long, with the last three joints distinctly larger. 1. Pescennius villosus. (Tab. I. fig. 6.) Ovate, brown or brownish black, slightly shining, clothed with short yellowish decumbent hairs, and the elytra in addition with long erect pale yellowish hairs. Head coarsely and closely punctured, the vertex longi- tudinally rugulose; prothorax convex, with very coarse rounded impressions placed close together and more or less confluent, strongly transverse, feebly rounded at the sides, widest just before the base, a little narrowed anteriorly to the slightly prominent front angles, slightly impressed transversely before the almost truncated base, the anterior margin broadly but feebly emarginate; elytra a little wider than the thorax, rounded at the sides, widest about the middle, very convex, with rows of deep rounded impressions distinct to the apex, the impressions close together, the first two rows turning off obliquely towards the shoulders near the base and making room for a very short scutellar row ; interstices flat, finely and sparingly punctured, humeral angles obtuse, base almost straight. Beneath reddish brown, shining, with large rounded very coarse punctures, the abdomen towards the apex more sparingly and finely punctured. Legs and antenne red. Length 6 millim. Hab. Mexico, Tehuacan (Hoge). Found in plenty by Hoge. SCEMTAS. Mentum rather large, transverse, slightly angular at the sides, closely fitting to the short side pieces of the . submentum, very coarsely punctured; mandibles with a strong tooth on the upperside; labrum not prominent, almost hidden by the epistoma; maxillary palpi stout, short, last joint broad oval; ligula not visible ; head broad, feebly trilobed in front, the central lobe of the epistoma rounded and slightly deflexed, lateral lobes rounded, not swollen or prominent; eyes large, rounded, not carinated within; prothorax transverse, convex, coarsely punctured, closely fitting to the elytra; elytra ovate, rounded at the sides strongly convex, with scattered appressed hairs, and regular rows of coarse punctures; antennx short, thickening a little outwardly, last joint oval, smaller than preceding; legs short and stout, tarsi stout, with short spiny hairs beneath ; intercoxal process rather broad, rounded at the apex ; epipleurze distinct throughout, narrowing from the shoulders; intermediate coxal cavities closed externally ; scutellum small, transverse. One inconspicuous species from Mexico. Semias is allied to Trimytis, but with the SC@2MIAS.—MENCHERES. 5 epistoma very feebly trilobed and almost rounded in front, the elytra with scattered rows of appressed hairs, the eyes not carinated within, &c; from Emmenastus it may be known by the shorter and stouter legs. 1. Semias minuta. (Tab. L. fig. 5.) Oval, convex, black, shining, slightly pubescent. Head coarsely and closely punctured; prothorax transverse, convex, rounded at the sides, a little wider behind than in front, widest just before the base, angles obtuse but little prominent, base feebly bisinuate, coarsely and closely punctured, indistinctly impressed transversely behind just with the basal margin; elytra slightly wider than the thorax at the base, rounded at the sides, widest about the middle, convex, with regular rows of coarse punctures distinct to the apex, the interstices flat, almost impunctate, with scattered indistinct appressed greyish hairs. Legs and antenne red. Beneath reddish brown, shining, with scattered rather coarse punctures. Length 3-33 millim. Hab. Muxico, Cordova (Sallé). Five examples. MENCHERES. Mentum transverse, angular at the sides, truncate in front, and closely fitting to the side pieces of submentum ; mandibles sharply toothed on the upperside, truncate at apex; maxillary palpi stout, apical joint narrowly and feebly triangular; labrum not very prominent, clasped by the mandibles; ligula entirely concealed ; epistoma a little produced in the middle, broadly rounded in front, the lateral lobes rounded but little swollen; prothorax transverse, closely fitting to the elytra, lateral and basal margins a little thickened and reflexed; elytra long, with regular rows of punctures and short appressed hairs; antenne thickening a little towards the apex, third joint half as long again as the second, fourth to seventh decreasing a little in length, eighth to tenth subtriangular, eleventh narrower ovoid; legs moderate; intermediate and pos- terior tarsi long, basal joint of latter about equal in length to the fourth joint, all the tarsi beneath clothed with short stiff hairs and the last joint feebly sulcate; metasternum long; intercoxal process acuminate and pointed in front (elongatus), or narrow, shorter and rounded in front (ncaraguensis); prosternum narrow, declivous behind; epipleure distinct, narrowing from the shoulders, obsolete a little before the apex; scutellum small, transverse; eyes rounded ; intermediate coxal cavities closed externally; ventral segments corneous. One species from Guatemala and one from Nicaragua will constitute this genus. Allied to Emmenastus, from which it may be known by its more strongly margined thorax, trilobed front, the rows of short hairs on the elytra, &c.; also superficially resembling certain Blapstinus and allies. Mencheres might be placed in either of the groups Thinobatini or Gnathosiini. The head is feebly trilobed in front. 1. Mencheres nicaraguensis. Oblong oval, reddish brown, convex, pubescent, slightly shining, apterous. Head coarsely and not very closely punctured ; prothorax rather convex, somewhat coarsely and closely punctured, transverse, rounded at the sides, widest about the middle, lateral margins a little thickened and narrowly reflexed, narrowed in front to the slightly prominent obtuse front angles, very slightly narrowed behind, hind angles rectangular, base strongly bisinuate, closely fitting to the elytra, and the margin a little raised, narrowly reflexed and promi- nent in the middle, the disc slightly impressed transversely behind just in front of the basal margin ; elytra with regular rows of rounded punctures distinct to the apex, the punctures close together and the rows more distinct outwardly [a little indistinct towards the suture], interstices flat with fine scattered punctures, and each with a row of short appressed yellowish hairs, long, convex, a little rounded at sides, a little wider than the thorax at the base, humeral angles obtuse, base bisinuate. Beneath shining, with 6 HETEROMERA. coarse rounded punctures, ventral segments sparingly but not very finely punctured; metasternum longi- tudinally impressed in the middle. ‘ Length 8-9 millim. Hab. Nicaracua, Chinandega (Sallé), Chontales (Beit). Two examples. These specimens differ slightly inter se: the elytra are a little more parallel in the Chinandega individual and the interstices more distinctly punctured. 2. Mencheres elongatus. (Tab. I. fig. 4.) Elongate oval, convex, reddish brown, pubescent, slightly shining. Head rather convex, coarsely and sparingly punctured in front, more finely behind; prothorax rather convex (especially in front), rounded at the sides, transverse, very slightly narrowed and sinuate behind to the subacute hind angles, narrowed a little in front to the rather prominent acute anterior angles, base strongly bisinuate, slightly impressed trans- versely near the base just within the slightly raised margin, closely and finely punctured; elytra about three times as long as the thorax, a little wider than the thorax at the base, slightly rounded at the sides, humeral angles obtuse, with regular rows of rounded punctures (more distinct outwardly), the interstices flat with scattered fine punctures distinct towards the suture, obsolete at the sides, and each with a row of short appressed yellowish hairs. Beneath shining; ventral segments sparingly and finely punctured, the rest somewhat coarsely and sparingly punctured ; metasternum faintly impressed longitudinally down the middle. Length 9 millim. Hab. Guatemata, El Jicaro in Vera Paz (Champion). Two examples. Closely allied to M. nicaraquensis, but longer, the intercoxal process acuminate and pointed in front, the thorax a little more finely and more sparingly punctured, &c. POSIDES. Mentum rather large, transverse, slightly angular at the sides, feebly emarginate in front, closely fitting to the side pieces of the submentum; mandibles strongly toothed on the upperside, the tooth on the right side strong and stout, that on the left short and slightly pointed, the lower longer lobes broad and truncate at the apex; maxillary palpi stout, apical joint broad oval; labrum almost completely and mandibles in greater part hidden by the epistoma; ligula entirely concealed; head short and broad; epistoma broad, almost truncate in front, a little produced triangularly in the middle and deflexed, lateral lobes rounded, not prominent, slightly impinging on the eyes behind; eyes large, rounded, carinated within; prothorax transverse, convex, strongly margined, the front angles rather prominent, strongly bisinuate at the base, and fitting closely to the elytra, coarsely punctured; elytra convex, oblong-ovate, with regular rows of deep coarse punctures; antenne rather long, not very stout, third joint half as long again as the second, fourth to eighth decreasing in length and oboval, ninth and eleventh broader, subtriangular, eleventh rounded ; legs short, tarsi stout, densely clothed with hair beneath; intercoxal process rounded in front; epipleuree narrow, distinct to the apex; scutellum small, transverse; intermediate coxal cavities entirely closed externally ; prosternum narrow, decliyous behind. One species from Mexico. Superficially resembling somewhat the genus Helops. 1. Posides dissidens. (Tab. I. fig. 2.) Oblong oval, very convex, dark reddish brown or black, shining, apterous. Head dull, strongly impressed transversely in front with a few scattered fine punctures; prothorax transverse, convex, impressed trans- versely along the base, rounded at the sides, equally narrowed in front and behind, lateral and basal margins and the slightly prominent subacute anterior angles a little raised and prominent, base strongly POSIDES.—EURYMETOPON. 7 bisinuate, front margin broadly but feebly emarginate, hind angles rectangular, very coarsely and closely punctured at the sides, more sparingly and finely along the middle, the spaces between the punctures very finely and sparingly punctate; elytra long, convex, rounded at the sides, widest about the middle, scarcely wider than the thorax at the base, with regular rows of very coarse rounded impressions distinct to the apex, interstices flat with scattered very fine punctures. Beneath shining, with large, very coarse, rounded impressions, the ventral segments towards the apex sparingly and finely punctured. Length 10-11 millim. Hab. Mexico, Puebla (Sallé), Tehuacan (Hoge). Found in some numbers by Hoge. EURYMETOPON. Eurymetopon, Eschscholtz, Zool. Atl. iv. p. 8 (1831); Lac. Gen. Col. v. p. 66 (1859); Horn, Rev. Ten. N. A. p. 267 (1870); Lec. & Horn, Class. Col. N. A. p. 363 (1883). Cryptadius, Lec. Ann. Lye. New York, v. p. 140 (1851). Some half-dozen North-American species constitute this genus; we have now to record two from Mexico. The winged species of Emmenastus and Eurymetopon are stated to occur beneath bark of Prosopis or mesquit; those without wings under stones. 1. Kurymetopon rufipes. Eurymetopon rufipes, Eschsch. Atlas, iv. p. 8, t. 18. f. 1 (1831)*; Mann. Bull. Mose. ii. p. 264; Horn, Rev. Ten. N. A. p. 267 (1870)’. Eurymetopon abnorme, Lec. Ann. Lyc. New York, v. p. 138°. Hab. NortH America, Colorado desert *, Arizona ?, California :—Muexico, Northern Sonora (Morrison). Apparently common in Sonora. 2. Hurymetopon brevicolle. (Tab. I. fig. 7.) Oblong ovate, brownish black, slightly shining, winged. Head dull, the vertex sparingly and finely punctured; the epistoma broad, truncate in front, separated on each side from the lateral lobes by an oblique impres- sion, anterior margin reddish, a little more coarsely and closely punctured ; prothorax strongly transverse, rounded at the sides, but little narrowed behind, widest a little behind the middle, somewhat strongly narrowed in front, the angles sharp triangular, hind angles rectangular, base slightly bisinuate and almost straight, finely and rather closely punctured, with an indistinct central raised line; elytra wider than the thorax at the base, slightly rounded at the sides, three times as long as the thorax, with indistinct rows of fine punctures, the interstices flat, with scattered very fine punctures and some slight traces of trans- verse wrinkles. Legs and antenne red. Length 84 millim. Hab. Mexico, San Pedro in Coahuila (Dr. Palmer). One example. Allied to #. sodale, Horn, and the head formed as in that species, but larger, and the thorax broader behind, less rounded at the sides, less convex, and yery short in proportion to the length of the elytra. 8 , HETEROMERA. EMMENASTUS. Emmenastus, Motschulsky, Bull. Mose. i. p. 75 (1845); Lac. Gen. Col. v. p. 59 (1859) ; Lec. Class. Col. N. A. p. 214 (1862) ; Horn, Rev. Ten. N. A. p. 268 (1870) ; Lec. & Horn, Class. Col. N. A, p. 862 (1883). Eurymetopon, Eschsch., Lec. Ann. Lyc. New York, v. p. 138 (1852). Hylocurus, Chev. MS. Some nine or ten species of this genus have been described from the Southern States of North America; many others are found in Central America, but none apparently have been described from that country till now. The southern range of the genus is probably in Colombia. Some closely allied smaller forms occur in Chili. Emmenastus, as recognized here, will include only the New- World species; it is not unlikely that the genus will have to be divided eventually. Some of the winged species with long meta- sternum have the mandibles toothed above; several have the anterior margin of the thorax slightly emarginate on each side near the angles, immediately behind the eyes, thus allowing the head to be withdrawn still deeper into the thorax; while others from Guatemala, southwards, are very convex, and have a distinct deep fovea on each side of the base of the thorax. The apterous species have the base of the thorax almost straight. ‘The head quarters of the genus will be in Central America. The winged species are very numerous, and apparently not of wide distribution; of apterous forms we only know as yet of some few Mexican species allied to those of North America. While in North America the apterous species are more numerous than those with wings, the reverse is the case in our territory. The winged species are found by beating herbage and the leaves of fallen trees, they also frequently come to light; the others beneath stones. The different species are very closely allied and form a difficult study. Two winged species are recorded from North America, one of which (£. longulus, Lec.) occurs in our country, the other (£. texanus, Lec.) is unknown to me; besides these and those from Central America, there are in Mr. F. Bates’s collection two undescribed winged species* labelled respec- tively as from “ California” and “ Pensacola ;” both, I suspect, are of Mexican origin. * Emmenastus ellipticus.—Of a different form from any other species of the genus known to me. The thorax and elytra taken together are of a regular elliptic, oval, convex form, equally narrowed in front and behind; reddish brown in colour, winged; the head coarsely and closely punctured; the prothorax, though broader than long, is comparatively longer than in the allied species, strongly rounded at the sides, widest behind, narrowed in front, anterior angles subacute and a little prominent, the base strongly bisinuate and the margin a little raised in the middle, sparingly and rather finely punctured on the disc, the punctuation closer and coarser at the sides, within the basal margin on each side about the middle is a short transverse impression ; the elytra about the width of the thorax, convex, with regular rows of coarsish punctures, distinct to the apex, the interstices finely and rather closely punctured. Length 6 millim. One specimen in Mr. F, Bates’s collection, labelled coll. Laferte, Pensacola, Mex. (Guérin). As far as I am aware, there is no place of this name in Mexico, though there is in Florida. E, vicinus.—A small, convex, winged species near Z,. tenebrosus in form, but much smoother and smaller ; EMMENASTUS. 9 Sect. 1. Winged Species. 1. Emmenastus longulus. Eurymetopon longulum, Lec. Ann. Lyc. New York, v. p. 188°. Emmenastus longulus, Horn, Rev. Ten. N. A. p. 269 (1870) ’. Had. Norta America, San Diego! in California?, Arizona ?.—Mexico, Northern Sonora (Morrison). 2. Emmenastus chiriquensis. (Tab. I. fig. 9.) Winged, oblong ovate, convex, reddish brown or black, shining. Head coarsely and rather closely punctured ; prothorax transverse, convex, sides almost straight behind near the base, rounded and narrowed in front, hind angles rectangular, front angles slightly pointed and a little prominent, base strongly bisinuate and with a short feeble shallow oblique impression on each side and rarely a slight impression in the centre in front of the scutellum, anterior margin emarginate and sinuate on each side near the angles just behind the eyes, rather coarsely and closely punctured along the sides, more sparingly and finely in the middle ; elytra with regular rows of coarse punctures distinct to the apex, the interstices with scattered fine punc- tures; intercoxal process long, acuminate at the apex, and passing beyond the hind coxe; metasternum long; mandibles toothed on the upperside; legs and antenne red. Length 7-8 millim. Hab. Panama, Volcan de Chiriqui, Tolé, Taboga Island (Champion).—CoLomB1a, Bogota (coll. Bates). Rather common in Chiriqui at an elevation of from 2000 to 4000 feet, and found by beating herbage. 3. Emmenastus longicornis. Winged, elongate oval, black, shining. Head with two feeble impressions between the eyes, the front rather coarsely and closely, the vertex a little more sparingly punctured; prothorax transverse, convex, rounded at the sides, a little narrower in front than behind, base strongly bisinuate, coarsely and closely and almost equally punctured, a little more sparingly punctured in the middle behind, slightly impressed transversely in front of the scutellum; elytra long, almost parallel to beyond the middle, with regular rows of coarse punctures distinct to the apex, the interstices with exceedingly fine scattered punctures; antenne and legs dark reddish brown, the former rather long. Length 8 millim. Hab. Guatemata, San Gerénimo (Champion). One example. Allied to E. chiriquensis, but narrower, the thorax more coarsely punctured and more narrowed behind, and the antenne a little longer. reddish brown in colour, slightly shining; the head closely and rather coarsely punctured; prothorax convex, rounded at the sides, narrowed in front, the sides very feebly sinuate before the rather acute anterior angles, a little narrowed behind, hind angles obtuse, base bisinuate, finely and closely punctured, the punctures confluent at the sides, a small rounded impression behind in front of the scutellum; elytra convex, a little wider than the thorax at the base, with indistinct but regular rows of fine punctures to the apex; interstices finely and rather closely punctured. Length 53 millim. One specimen in Mr. F. Bates’s collection, labelled: Calif. ex coll. Laferte. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, July 1884. CC 10 HETEROMERA. 4. Emmenastus variabilis. Winged, oblong ovate, convex, reddish brown or black, shining. Head coarsely and closely punctured; pro- thorax transverse, convex, narrowed in front, rounded at the sides, sides nearly straight behind in front of the rectangular hind angles, front angles slightly acute, base strongly bisinuate, anterior margin feebly emarginate and sinuate on each side near the angles just behind the eyes, closely coarsely and almost equally punctured, the punctures a little finer and more scattered in the middle; elytra with rows of fine punctures distinct to the apex, the interstices finely and somewhat confusedly punctured ; legs and antenne red; mandibles toothed above; metasternum long. Length 7-83 millim. Hab. Mexico (coll. F. Bates), Tuxtla, Playa Vicente (Sal/é), Almolonga (Hdége), Presidio (Forrer) ; Honpuras (Sal/é). Labelled Hylocurus dermestoides in the Sallé collection. A common species in Mexico, and found by Hoge in plenty at Almolonga. Some individuals are more coarsely and closely punctured than others; one from Presidio has the rows of punctures on the elytra much finer. Apparently a variable species, it may be known from £. chiriquensis by its more evenly punctured thorax, and its finer and less regular rows of elytral punctures. : 5. Emmenastus canaliculatus. (Tab. I. fig. 10.) Winged, oblong ovate, not very convex, reddish brown or black. Head rather coarsely and closely punctured ; prothorax comparatively short, transverse, not very convex, narrowing from the base to the front, widest at base, hind angles rectangular, front angles scarcely pointed and almost obtuse, base bisinuate, sides slightly rounded, closely and somewhat coarsely and evenly punctured, the punctures a little more scattered in the middle, with a short smooth impressed line in the middle at the base; elytra a little wider than the thorax at the base, with rows of fine punctures distinct to the apex, the interstices with finer scattered punctures, the punctures a little more distinct at the margins and at the apex; legs and antenne red. Beneath rather closely punctured. Length 8-9 millim. Hab. Mexico, Presidio (Forrer). Four examples. This species may be known from its allies by its less convex form, and its comparatively short (and feebly canaliculated) thorax. 6. Emmenastus brevipennis. Winged, oblong ovate, rather broad, not very convex, black, shining. Head coarsely and closely punctured ; prothorax transverse, not very convex, widest just before the base, slightly rounded at the sides, but little narrowed behind, narrowed in front to the scarcely prominent obtuse angles, hind angles obtuse, base bisinuate, closely coarsely and almost equally punctured, the punctures a little confluent towards the sides; elytra a little wider than the thorax, not very convex, comparatively short, with rows of rather coarse punctures distinct to the apex, the interstices with scattered fine punctures; legs and antenne reddish brown; intercoxal process rounded in front. Length 7 millim. Hab. Mexico, San Blas (forrer). One example. ‘This species may be known from £. variabilis and allies by its shorter form. The elytra are comparatively very short. EMMENASTUS. 11 7. Emmenastus solitarius. Winged, oblong ovate, convex, reddish brown, shining. Head coarsely and rather closely punctured; pro- thorax transverse, convex, rounded at the sides, widest just before the base, scarcely narrowed behind, hind angles subrectangular, narrowed in front to the rather sharp front angles, anterior margin feebly emarginate and sinuate on each side near the angles just behind the eyes, base bisinuate, coarsely closely and subequally punctured, the punctures a little confluent at the sides; elytra a little wider than the thorax at the base, convex, with rows of coarsish punctures distinct to the apex, the interstices coarsely punctured, the rows of punctures a little indistinct towards the suture, distinct at the sides; mandibles toothed above; intercoxal process pointed in front. Long. 73 millim. Hab. Mexico, Tepanistlahuaca (Saé/é). One example. This species may be known by its rather coarse uniform punctuation. The punctures of the interstices of the elytra but little finer than those of the strie. 8. Emmenastus belti. Winged, oblong ovate, dark reddish brown or black, shining. Head with the anterior margin closely, the vertex sparingly and coarsely punctured; prothorax transverse, a little longer than in the allied species, convex, rounded at the sides, widest just before the base, a little narrowed behind, the hind angles rect- angular, narrowed and rounded in front to the slightly pointed front angles, anterior margin feebly emarginate and sinuate on each side near the angles just behind the eyes, base strongly bisinuate and with a. short oblique feeble impression on each side near the middle, unequally punctured, the sides rather coarsely and confluently, the disc sparingly and finely; elytra a little wider than the thorax at the base, some- what rounded at the sides, with rows of fine punctures, the interstices finely and sparingly punctured; legs and antennw red; mandibles toothed above; intercoxal process pointed in front. Length 7-8 millim. Hab. Nicaracua, Granada, Chinandega (Sallé), Chontales (Be/¢). Allied to E. variabilis, but shorter, the thorax a little less transverse, and more unequally punctured &c. 9. Emmenastus rotundicollis. Winged, oblong ovate, reddish brown, shining. Head coarsely and closely punctured; prothorax broad, trans- verse, convex, strongly rounded at the sides, widest a little before the base, slightly narrowed behind to the obtuse hind angles, narrowed in front to the subacute front angles, anterior margin on each side feebly emarginate and sinuate near the angles just behind the eyes, base bisinuate and feebly impressed trans- versely on each side near the middle, closely coarsely and almost equally punctured, the punctures a little confluent at the sides; elytra the width of the thorax at the base, with rows of rather coarse punctures (somewhat indistinct towards the suture) distinct to the apex, the interstices with scattered fine punctures; legs and antennx red; intercoxal process pointed in front; mandibles toothed above. Length 73 millim. Hab. Mexico (coll. F. Bates). One example. This species is labelled Hylocurus dermestoides, Chev.; £. variabilis also bears the same name in the Sallé collection. E. rotundicollis may be known from all the species here recorded by the strongly rounded sides (especially behind) of its comparatively broad thorax. CC 2 12 HETEROMERA. 10. Emmenastus parallelus. Winged, elongate oval, moderately convex, reddish brown or black, rather dull. Head closely and coarsely punctured ; prothorax transverse, not very convex, widest behind, a little narrowed in front, the anterior angles somewhat prominent and subacute, hind angles rectangular, closely, rather coarsely, and subequally punctured, the punctures a little confluent at the sides, the base feebly bisinuate; elytra scarcely wider than the thorax, the sides rather straight, with rows of fine punctures distinct to the apex, the interstices finely and sparingly punctured ; antenne and legs red; intercoxal process pointed in front. Length 7-73 millim. Hab. Mexico (coll. F. Bates). Two examples. Allied to EL. longulus, Lec., but more parallel, duller, the thorax relatively larger and broader and more evenly punctured; in one of these examples the sides of the thorax are a little less rounded in front, and the anterior angles more acute and prominent. 11. Emmenastus intermedius. Winged, oblong ovate, very convex, black, shining. Head with the anterior margin closely, the vertex sparingly and coarsely punctured; prothorax strongly convex, moderately transverse, widest before the base, sides nearly straight just in front of the rectangular hind angles, but little narrowed behind, rounded and narrowed in front to the slightly acute angles, anterior margin sinuate and emarginate on each side within the angles and just behind the eyes, somewhat coarsely and confluently punctured at the sides, more finely and widely punctured in the middle, base bisinuate and with a feeble triangular impression on each side near the middle ; elytra convex, the width of the thorax at the base, with rows of fine punctures distinct to the apex, the interstices with scattered not very fine punctures, the rows of punctures not so regular or distinct towards the suture; legs and antenne red; mandibles strongly toothed above ; inter- coxal process pointed in front. Length 74 millim. Hab. Guatemata, Izabal (Sallé); Honpuras (Sal/é). Two examples. This species may be known by its comparatively long, convex, broad thorax, its generally convex form, and the somewhat coarse punctuation of the inter- stices of the elytra. 12. Emmenastus tenebrosus. Winged, oblong ovate, convex, reddish brown or black, shining. Head closely and rather coarsely punctured ; prothorax convex, rounded at the sides, transverse, widest a little behind the middle, slightly narrowed behind to the obtuse subrectangular hind angles, narrowed in front and feebly sinuate before the rather prominent front angles, the base bisinuate, coarsely closely and regularly punctured, the punctures confluent at the sides, a small shallow rounded impression in the centre near the base; elytra scarcely wider than the thorax at the base, somewhat rounded at the sides, convex, with rows of not very coarse punctures distinct to the apex, the interstices somewhat coarsely and regularly punctured, the punctures in rows midway between the strie; legs and antenne reddish brown ; intercoxal process slightly rounded in front. Length 54-6} millim. Hab. Mexico, Guanajuato (Sal/é). Seven examples. In one or two of these specimens the sides of the thorax are a little more rounded towards the front and not feebly sinuate, and the anterior angles more EMMENASTUS. 13 obtuse. Narrower and more convex than EL. solitarius, the thorax narrowed behind and more rounded at the sides, and the elytra not nearly so coarsely punctured ; narrower, smaller, and more convex than #. rotundicollis, the thorax especially narrower, the rows of punctures of the elytra finer and not so distinct. . Of the form of Eurymetopon rufipes, but smaller ; it may be known from all the species of Emmenastus here recorded, excepting L. solitarius and E. rotundicollis, by its closely, coarsely, and evenly punctured thorax, in which respect it resembles EF. teranus, Lec. 13. Emmenastus alatus. Winged, oblong ovate, convex, black, shining. Head coarsely and rather closely punctured ; prothorax convex, moderately transverse, widest behind, scarcely narrowed at the base, rounded and narrowed in front to the subacute anterior angles, hind angles rather obtuse subrectangular, base bisinuate and feebly impressed on each side near the middle just within the margin, coarsely closely and rather unequally punctured, the punctures scattered in the middle, confluent at the sides, anterior margin feebly emarginate on each side just behind the eyes; elytra a little or scarcely wider than the thorax at the base, convex, with rows of coarsish punctures distinct to the apex, interstices closely and rather coarsely punctured; legs and antennze red; intercoxal process rather pointed in front; mandibles toothed above. Length 7-73 millim. Hab. Guatemaua, near the city (Salvin). Three examples. Larger, longer, and a little more convex than E. salvini, and with the thorax a little longer and less transverse. I did not myself meet with this species, nor with L. salvini. 14. Emmenastus salvini. Winged, oblong ovate, moderately convex, black. Head closely and rather coarsely punctured; prothorax transverse, not very convex, widest behind, narrowed and rounded in front, scarcely narrowed behind, angles rather obtuse and not prominent, anterior margin fecbly emarginate on each side near the angles, base bisinuate and feebly impressed on each side near the middle just within the margin, rather coarsely and closely punctured, the punctures confluent at the sides; elytra a little wider than the thorax at the base, with rows of fine punctures distinct to the apex, interstices rather closely and finely punctured; legs and antennze red; mandibles toothed above; intercoxal process pointed in front. Length 64 millim. Hab. GUATEMALA, near the city (Salvin). Four examples taken by Mr. Salvin near the Cerro del Carmen are all I have seen of this species. Of the form of E£. canaliculatus, but much smaller, the hind angles of the thorax more obtuse, the punctuation of the elytra finer, &c. 15. Emmenastus ambiguus. Winged, oblong ovate, very convex, black, shining. Head coarsely but sparingly punctured; prothorax trans- verse, convex, rounded at the sides, widest behind, narrowed in front to the rather obtuse anterior angles, hind angles rectangular, the base bisinuate and with a short oblique obsolete impression on each side about the middle, with scattered rather coarse punctures, the punctures finer and more distant in the middle, coarser at the base, and a little confluent at the sides; elytra convex, the width of the thorax at the base, a little rounded at the sides, with rows of coarsish punctures distinct to the apex, the interstices flat and 14 | HETEROMERA. finely and sparingly punctured, the punctures more numerous and distinct towards the suture at the base ; legs and antenne reddish brown. Length 53 millim. Hab. Panama, La Caldera in Chiriqui (Champion). One example. Of the convex form of the EZ. foveicollis group, but with the thoracic fovere obsolete, and represented by short, oblique, shallow impressions; it is nearest allied to E. confusus. 16. Emmenastus guatemalensis. Winged, oblong ovate, very convex, dark reddish brown or black, shining. Head coarsely and closely punc- tured; prothorax transverse, convex, widest at the base, the sides rounded and narrowed in front to the obtuse anterior angles, the hind angles rectangular, coarsely closely and regularly punctured, the punctures but little finer towards the middle and scarcely confluent at the sides, base bisinuate; elytra with regular rows of coarse punctures distinct to the apex, the interstices somewhat coarsely punctured ; antenne and legs dark reddish brown; mandibles toothed above ; intercoxal process slightly rounded in front. Length 5-6 millim. Hab. Guatemata, Zapote, San Gerdnimo, Capetillo, Duefas (Champion), Izabal (Sallé). Resembling somewhat in its convex form E. foveicollis and allies, but without the deep thoracic fovee. 17. Emmenastus foveicollis. (Tab. I. fig. 11.) Winged, oblong ovate, very convex, dark reddish brown or black, shining. Head coarsely but not very closely punctured; prothorax very convex, transverse, strongly rounded at the sides, a little narrowed behind to the acute hind angles, narrowed in front to the rather obtuse anterior angles, base bisinuate and the margin raised and with a deep triangular fovea on each side about the middle, the fovee sharply and abruptly defined outwardly, more or less connected inwardly by a central transverse basal impression, closely coarsely and unequally punctured, the punctures somewhat confluent at the sides, scattered on the disc, the central part of the base between the fovex very sparingly punctured and almost smooth; elytra about the width of the thorax at the base, rounded somewhat at the sides, very convex, with rows of coarse punc- tures distinct to the apex, interstices finely and confusedly punctured; legs and antenne red; intercoxal process pointed in front; mandibles toothed above. Length 53-63 millim. Hab. GuaTEMALA, near the city, Aceytuno (Salvin), Panajachel, Duefias, San Gerénimo, Capetillo (Champion); Nicaragua, Granada (Sallé) ; Costa Rica, Irazu (Rogers). Of a different facies from the preceding species, from all of which it may be at once known by its convex form and deep thoracic fovee. The single example from Nicaragua differs a little from the numerous individuals from Guatemala in having the thorax a little smoother and longer, the elytra a little broader and a little more rounded at the sides, and the interstices more finely punctured. The specimen from Costa Rica is more typical, but with the rows of elytral punctures coarser. This species is rather EMMENASTUS., 15 common in Guatemala, and found by beating herbage &c., and sometimes coming to light at night. 18. Emmenastus confusus. Weed, oblong ovate, convex, dark reddish brown or black, shining. Head coarsely and somewhat closely punctured ; prothorax transverse, convex, widest behind, rounded at the sides and narrowed in front, the anterior angles rather obtuse and scarcely prominent, hind angles rectangular, the base bisinuate, a narrow, deep transverse triangular fovea (sharply defined outwardly) on each side about the middle just within the raised basal margin, somewhat coarsely closely and regularly punctured, the punctures finer and more scattered on the disc towards the base and sometimes a little confluent at the sides; elytra the width of the thorax at the base, convex, a little rounded at the sides, with rows of punctures (coarse at the sides, finer and closer towards the suture) distinct to the apex, interstices flat with rather regular rows of punctures almost as coarse as those of the strize towards the suture and sparingly irregularly and very finely punctured at the sides; legs and antenne reddish brown; mandibles sharply toothed above. Length 6-7 millim. Hab. GuateMaLa, Zapote, Coatepeque, Capetillo, El Tumbador (Champion). Allied to EL. foveicollis, but less convex, a little flatter above, the elytra differently punctured ; it may be known from both E. foveicollis and E. levicollis by its narrower and more transverse thoracic basal foveee. Found by beating herbage. 19. Emmenastus levicollis. Winged, oblong ovate, very convex, dark reddish brown or black, shining. Head coarsely but sparingly punctured; prothorax convex, transverse, widest at the base, the sides rounded and narrowed in front, anterior angles obtuse and scarcely prominent, hind angles distinct and rectangular, the base bisinuate, a deep triangular fovea (sharply defined outwardly) on each side about the middle just within the raised basal margin, the base between the fovese with a central shallow transverse impression, with scattered rather coarse punctures, the disc more sparingly and finely punctured and almost smooth towards the base, sides with larger coarser punctures which are rarely confluent; elytra convex, about as wide as the thorax at the base, slightly rounded at the sides, with rows’ of coarse punctures distinct to the apex, the interstices flat and sparingly and very finely punctured; legs and antenne reddish brown; mandibles toothed above; intercoxal process pointed in front. . Length 5-64 millim. Hab. Panama, Tolé, Volcan de Chiriqui, Caldera, Pefia blanca (Champion). Closely allied to E. foveicollis, but with the thorax and the interstices of the elytra smoother and more sparingly and finely punctured; the thorax less convex, broader behind, and less strongly rounded at the sides. On herbage. Sect. 2. Apterous Species. 20. Emmenastus mancus. Apterous, oblong ovate, moderately convex, dark reddish brown or black, rather dull. Head coarsely and closely punctured; prothorax transverse, convex, widest behind before the base, narrowed in front, the anterior angles a little prominent, hind angles rectangular, closely subequally and rather coarsely punc- tured, the punctures a little confluent at the sides, base bisinuate, the disc slightly impressed near 16 HETEROMERA. the base; elytra rather long, convex, a little rounded at the sides, about the width of the thorax, with rows of very fine punctures distinct to the apex, the interstices with scattered finer punctures ; legs and antenne red. Beneath coarsely punctured, metasternum long, intercoxal process pointed in front. Length 63-7 millim. Hab. Mexico, Puebla (Sallé), Tehuacan (Hége). Three examples. Of the form of some of the winged species (E. longulus, &c.) ; narrower and longer than any of the apterous species known to me. 21. Emmenastus glabratus. (Tab. I. fig. 8.) Apterous, oblong ovate, convex, black, shining. Head coarsely and closely punctured; prothorax transverse, moderately convex, widest behind, narrowed in front, anterior angles obtuse and a little prominent, hind angles obtuse, the base nearly straight, closely evenly and rather coarsely punctured, the punctures a little confluent at the sides; elytra convex, a little wider than the thorax at the base, with regular rows of coarse punctures distinct to the apex, the interstices finely and sparingly punctured; legs and antennz reddish brown. Length 7-8 millim. Hab. Mexico (coll. F. Bates), Tehuacan, Oaxaca (Hége). Taken in numbers by Hoge at Tehuacan: Larger, broader, and not so closely punc- tured as E. obesus, Lec., from New Mexico &c., the punctures of the elytral stricee much coarser. 22. Emmenastus curtus. Apterous, ovate, very convex, black, rather dull. Head very closely and coarsely punctured ; prothorax trans- verse, strongly convex, rounded at the sides, widest just before the base, narrowed in front, the angles obtuse, base nearly straight, very closely regularly and rather coarsely punctured, the punctures a little confluent at the sides, feebly impressed transversely before the base; elytra a little wider than the thorax at the base, very convex, rounded at the sides, somewhat closely regularly and coarsely punctured, with rows of scarcely coarser punctures, distinct at the sides, obsolete towards the suture and not reaching the apex. Beneath shining, coarsely punctured; intercoxal process pointed in front. Legs and antenne reddish brown. Length 5-6} millim. Hab. Mexico (coll. F. Bates), Tehuacan (Hoge). Taken in some numbers by Hoge. This species is comparatively shorter, broader, and more convex than any of the apterous species here described. The thorax is very closely and evenly, and almost confluently punctured. 23. Emmenastus lentus. Apterous, oblong ovate, convex, dark reddish brown, shining. Head reddish brown, coarsely and closely punctured, rugulose; prothorax reddish brown, convex, transverse, widest just before the base, a little narrowed behind, narrowed in front, but little rounded at the sides, the anterior and posterior angles obtuse, the base straight, closely regularly and somewhat finely punctured, the punctures confluent at the sides; elytra convex, a little wider than the thorax at the base, slightly rounded at the sides, EMMENASTUS. 17 with irregular rows of rather fine punctures, the punctures finer or indistinct towards the suture and at the apex, the interstices finely and equally punctured. Length 74 millim. Hab. Mexico, Monclova in Coahuila (Dr, Palmer). One example. 24, Emmenastus rugicollis. Apterous, oblong ovate, convex, black, rather dull. Head closely and coarsely punctured, longitudinally rugulose; prothorax broad, transversely convex, rounded at the sides, widest a little before the base, very slightly narrowed behind, narrowed in front, anterior and posterior angles obtuse and not prominent, very closely regularly and somewhat coarsely punctured, the punctures longitudinally confluent, a central shallow impression behind near the base, the base almost straight; elytra about the width of the thorax, convex, closely and rather coarsely punctured, with indistinct rows of coarser punctures not reaching the apex, and distinct only at the sides, obsolete towards the suture; legs and antenne reddish brown. Length 6 millim. Hab. Mextco, San Luis Potosi (Dr. Palmer). One example. 25. Emmenastus pulvinatus. Apterous, oblong ovate, convex, dull reddish brown or black, the upper surface covered with scattered fine powdery-like scales, rather shining. Head broadly, shallowly, and transversely impressed in front, coarsely and closely punctured; prothorax transverse, convex, rather strongly rounded at the sides, widest a little before the base, narrowed in front, a little narrowed behind, the angles obtuse, closely evenly and rather finely punctured, the punctures a little confluent at the sides, base nearly straight ; elytra about as wide as the thorax, convex, rather short, somewhat rounded at the sides, with indistinct rows of fine punctures obsolete towards the suture and scarcely reaching the apex, the interstices closely and finely punctured; legs and antenne red. Beneath reddish brown, shining, coarsely punctured ; intercoxal process rounded in front. Length 6-6} millim. Hab. Mexico, Oaxaca (Sallé). Three examples. Shorter than E. picipes, the thorax comparatively broader, the strie of the elytra finer and obsolete towards the suture. 26. Emmenastus picipes. Apterous, oblong ovate, very convex, dark reddish brown or black, shining. Head coarsely and closely punc- tured; prothorax transverse, very convex, rounded at the sides, widest before the base, a little narrowed behind to the obtuse hind angles, narrowed in front, anterior angles but little prominent and obtuse, rather coarsely closely and regularly punctured, the punctures a little confluent at the sides, a small rounded impression near the base in front of the scutellum; elytra convex, a little wider than the thorax at the base, rounded at the sides, with distinct regular rows of coarsish punctures distinct to the apex, the rows of punctures scarcely coarser outwardly, and equally distinct towards the suture, the interstices finely and rather closely punctured; legs and antenne reddish brown. Beneath shining, rather coarsely punctured ; intercoxal process slightly rounded in front. Length 7 millim. Hab. Mexico, Capulalpam, Oaxaca (Sallé). Three examples. Labelled Hylocurus picipes, Chev., in the Salle collection. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, July 1884. DD 18 HETEROMERA. Group EPITRAGIDES. | | This group is well represented in Central America, and the finest species of Epitragus are found in Mexico. - . Schenicus might with advantage be divided, but till the numerous South-American species of Epitragides are worked out, it is better not to make new, and perhaps unnecessary, genera. Haag and Maklin have studied this group a good deal, with, I believe, the intention of monographing the species, but, as far as I am aware, nothing has been published by them. Many of the species in the Sallé and in Mr. F. Bates’s collection bear manuscript names of these authors; these names I have in most cases adopted. The species, with a few exceptions, are not of wide distribution. SCHCENICUS. Schenicus, Leconte, New Species Col. p. 109 (1866); Horn, Rev. Ten. N. A. p. 265 (1870) ; Lec. & Horn, Class. Col. N. A. p. 363 (1888). Described from a single North-American species; numerous others occur in Central America. Under this genus I have included, with the exception of Tydeolus, all those species in which the prosternum is not received by the mesosternum. Three species (S. vestetus, pectoralis, and yucatanensis) have the prosternum horizontal and a little produced (though never very prominent as in Kpitragus); the remainder have the prosternum rounded and declivous behind. | Sect. 1. Prosternum rounded, declivous behind. 1. Schenicus oculatus. (Tab. I. fig. 14.) Elongate oval, subparallel, convex, dark sneous, shining. Head short and broad, deeply impressed on each side of the epistoma, which is a little produced and rounded, side lobes rather prominent, with scattered coarse punctures; the eyes rounded, prominent, and coarsely granulated ; prothorax transverse, subqua- drate, convex, slightly rounded at the sides, a little narrowed in front to the obtuse anterior angles, widest about the middle, very slightly narrowed and sinuate behind before the somewhat prominent hind angles, anterior margin nearly straight, base bisinuate, closely regularly and rather coarsely punctured ; elytra long, convex, a little wider than the thorax, the sides parallel to beyond the middle, with regular rows of punctures distinct to the apex, the interstices sparingly and finely punctured. Length 7-73 millim. Hab. Panama, San Feliz, San Lorenzo, Volcan de Chiriqui (Champion). _ This species may be at once known by its long parallel form, subquadrate thorax, short head, and coarsely granulated eyes. 2. Schenicus panamensis. (Tab. I. fig. 15.) Oblong ovate, convex, reddish brown with an eneous tinge, or dark eeneous, shining. Head with scattered rather coarse punctures; the eyes rather prominent and comparatively coarsely granulated; prothorax a little broader than long, widest at the base, slightly rounded at the sides, gradually narrowed from the base, sides feebly sinuate near the rather prominent anterior angles, feebly sinuate behind in front of the prominent outwardly directed subacute hind angles, base strongly bisinuate, closely and rather coarsely SCHENICUS. 19 punctured, a little more coarsely and more sparingly on the disc, especially at the base; elytra wider than the thorax at the base, the sides rather straight and very little rounded, with regular rows of coarse punctures distinct to the apex, the interstices each with a row of very fine punctures, the base and suture with some scattered fine punctures. Length 83-9 millim. _ Hab. Costa Rica (Van Patten); Panama, Volcan de Chiriqui, Tolé, San Feliz, Peiia blanca, David, Bugaba, La Caldera, San Lorenzo, Taboga Island (Champion). This is not very closely allied to any of the species of Schenicus here recorded. Larger and broader than S. oculatus; the head and thorax of a different shape; the eyes-smoother, less prominent, and less rounded, though a little more prominent and more coarsely granulated than in the other species of the genus. It appears to be widely distributed in the State of Panama, and occurring also in Costa Rica. 3. Schenicus salvini. Schenicus salvini, F. Bates in litt. Oblong ovate, convex, brassy «neous. Head very closely and somewhat coarsely punctured; prothorax a little broader than long, widest at the base, sides rounded and narrowed from the base forwards, anterior angles obtuse not produced, hind angles rectangular slightly acute, anterior margin nearly straight, the base strongly bisinuate, very closely evenly and coarsely punctured ; elytra broader than the thorax at the base, the sides rounded, with indistinct rows of coarsish punctures, the interstices confusedly closely - and not very finely punctured, the punctures nearly as coarse as those of the strix, towards the sides and at the apex with fine irregular transverse wrinkles. Length 9-104 millim. Hab. Guatemata, Chinautla, Duefias (Salvin), Capetillo, Duefias, San Gerénimo (Champion); Costa Rica (coll. F. Bates). This species may be known by its brassy colour and the confused punctuation of the elytra. 4. Schenicus viridis. Oblong ovate, convex, rather dull, greenish or dark bronze, somewhat variable in colour. Head closely and rather coarsely punctured, epistoma a little produced triangularly and deflexed in front; prothorax about as long as broad, convex, the sides straight at the base and narrowed and rounded in front, broadest behind, anterior angles obtuse, hind angles rectangular, the base strongly bisinuate, closely evenly and rather coarsely punctured, sometimes with a smooth indistinct central line; elytra wider than the thorax, with irregular rows of coarsish punctures, the interstices each with one or two rows of finer punctures, the base and suture more finely and not so regularly punctured, finely wrinkled transversely at the sides. Length 9-11 millim. Hab. Mexico (coll. F. Bates), Yolos, Oaxaca (Sallé), Esperanza, Oaxaca (Hége) ; GuaTEMALA, Tocoy (Champion). Pretty common in Mexico and in most collections. 5. Schenicus rufipes. Epitragus rufipes, Haag in litt. Oblong ovate, convex, dark sneous, sometimes with a greenish tinge, when fresh covered with ashy efflorescence. DD 2 20 HETEROMERA. Head closely and somewhat coarsely punctured, the epistoma produced and a little deflexed and rounded in front; prothorax long, about as long as broad, convex, widest at the base, sides straight behind, rounded and narrowed in front, anterior angles obtuse not prominent, hind angles rectangular, anterior margin nearly straight, the base strongly bisinuate, very closely evenly and somewhat coarsely punctured ; elytra a little wider than the thorax, convex, with not very regular rows of coarsish punctures distinct to the apex, the interstices with finer scattered punctures and towards the sides and at the apex with some very fine indistinct transverse wrinkles. Legs red or reddish brown; the femora paler, and in some examples bright red. Length 83-10 millim. Hab. Nicaracua (Sallé), Chontales (Belt, Janson). I have only seen this species from Nicaragua. Closely allied to S. wridis, and with the sides of the thorax straight behind as in that species; but comparatively narrower, the rows of elytral punctures more regular and better defined, and the legs red. 6. Schenicus impressus. Oblong oval, convex, greenish bronze, shining. Head closely and rather coarsely punctured ; prothorax a little broader than long, the sides straight behind, rounded and narrowed in front to the obtuse anterior angles, hind angles rectangular, the base bisinuate, closely and rather coarsely punctured, the punctuation closer, finer, and somewhat confluent at the sides, shallowly impressed on each side near the margin a little in front of the hind angles, with an indistinct smooth central line; elytra wider than the thorax, convex, with regular rows of coarse punctures, the interstices with one or two rows of finer punctures, the base and suture more closely and finely punctured, finely wrinkled transversely at the sides. Length 93 millim. Hab. Costa Rica (Van Patten). One example. Very near S. viridis, but smoother, narrower, more shining, not quite so convex, and the rows of elytral punctures more distinct. 7. Schenicus chalybeus. (Tab. I. fig. 16.) Epitragus chalybeus, Deyr. in litt. Oblong ovate, convex, dark greenish bronze, sometimes bronze with a bluish tint, rather shining. Head coarsely and closely punctured; prothorax transverse, strongly convex, rounded at the sides, widest a little before the base, scarcely narrowed behind, narrowed in front, the angles obtuse not prominent, closely, evenly, and very coarsely punctured, the base strongly bisinuate; elytra wider than the thorax, with regular rows of moderately coarse punctures, the interstices each with one or two rows of finer punctures, more finely and closely punctured along the suture and at the base. Length 8-9 millim. Hab. Muxtco (coll. F. Bates), Esperanza, Oaxaca (Hoge), El Camaron (Sallé). Sent by Hoge in some numbers. Near S. viridis, but more shining, the thorax shorter, the sides more rounded and not straight behind; the punctuation of the thorax coarser, and of the elytra coarser, more regular, and less confused. 8. Scheenicus difficilis. Epitragus difficilis, Boucard in litt. Oblong ovate, convex, greenish bronze. Head coarsely and closely punctured; prothorax of the same form as . SCHGENICUS. 21 in S. chalybeus, very closely, evenly, and rather coarsely punctured; elytra wider than the thorax, con- fusedly, rather finely, and not very closely punctured, without any rows of coarse punctures. Length 9-10 millim. Hab. Mexico (coll. &. Bates), El Camaron (Saldé). Four examples, apparently all females. Very close to S. chalybeus and sent from the same locality. The elytra, however, are so differently punctured that it seems scarcely possible to unite them; the thorax is also more closely and finely punctured. Labelled £. punctatissimus, Chev., in the Sallé collection. 9. Schenicus basalis. Oblong oval, rather broad, convex, dark greenish bronze, dull. Head coarsely and closely punctured; pro- thorax scarcely broader than long, convex, widest at the base, the sides nearly straight towards the base, rounded and narrowed in front, the anterior angles not prominent, the hind angles rectangular, the base strongly bisinuate, very closely and coarsely punctured, the punctures a little confluent, rounded and shallow; elytra comparatively broad, rounded at the sides, wider than the thorax, closely finely and shallowly punctured, the punctures indistinctly arranged in rows, finely and shallowly wrinkled trans- versely towards the sides, the base more closely and confusedly punctured. Beneath dull, very closely and shallowly punctured. Length 9-94 millim. fab. Mexico, Almolonga (Hége). Two examples. Duller and broader than its allies, the elytra with rounded, very shallow punctures; the thorax very closely almost confluently punctured. 10. Schenicus niger. Oblong ovate, convex, dull bronze-black. Head closely and finely punctured; prothorax a little broader than long, convex, widest behind, the sides rounded and narrowed in front, feebly rounded and almost straight behind, the lateral margins a little thickened, the anterior angles obtuse, the hind angles scarcely promi- nent, subrectangular, the base strongly bisinuate, closely evenly and coarsely punctured, with an indistinct or obsolete smooth central line; elytra rather long, convex, somewhat pointed behind, wider than the thorax, with irregular rows of coarsish punctures, the interstices confusedly and sparingly punctured, the punctures scarcely finer than those of the strie, indistinctly wrinkled transversely at the sides. Length 9-93 millim. Hab. Guatemata (Sallé), San Joaquin (Champion). Two examples. Labelled Hpitragus niger, Haag, in the Sallé collection. Narrower, smaller, and more convex than S. viridis; the elytra somewhat pointed behind, almost black in colour, and more sparingly punctured. Sect. 2. Prosternum a little produced behind, horizontal. 11. Schenicus pectoralis. (Tab. I. fig. 17.) Oblong ovate, convex, bright cupreous or greenish bronze. Head closely and coarsely punctured, the eyes carinated within ; prothorax scarcely broader than long, widest at the base, the sides rounded and nar- rowing to the front, feebly sinuate before the rather prominent outwardly directed hind angles, the anterior angles a little produced, obtuse, the base bisinuate, closely and rather coarsely punctured, a little more finely and closely at the sides; elytra wider than the thorax, sides rounded, widest about the 22 - HETEROMERA. middle, rather coarsely, closely, and confusedly punctured, usual rows. of punctures obsolete ; legs rather long ; prosternum deflexed behind and slightly produced into a short, broad, horizontal projection trun- cated at the apex; mesosternum thickened into a rounded smooth elevation between the intermediate cox; ventral segments very finely and confusedly punctured towards the apex, the first segment smooth with scattered punctures. Length 114-123 millim. Hab. Mexico, Puebla (coll. F. Bates), Izucar and Puebla (Sailé). Four examples. This species may be known by the differently shaped prosternum. 12. Schenicus vestitus. Oblong ovate, convex, dull dark bronze, covered with scattered short appressed cinereous hairs, when fresh completely clothed with a yellowish-white mealy efflorescence. Head closely and finely punctured, the epistoma not produced and feebly rounded and emarginate in front, the labrum in consequence appearing very prominent; prothorax broader than long, convex, widest at the base, the sides rounded and narrowing from the base, the hind angles rectangular, front angles obtuse not prominent, the base bisinuate, a shallow impression in the middle behind in front of the scutellum, closely and rather coarsely punctured, the punctuation closer and finer at the sides; elytra broader than the thorax, rather closely confusedly and somewhat coarsely punctured, and with shallow dorsal grooves, in each of which is an indistinct or interrupted row of coarser punctures; prosternum horizontal, a little concave, produced behind into a thin short lobe rounded at the apex; mesosternum a little thickened between the intermediate coxe, in some examples slightly concave in front and with a short indistinct blunt tubercle on each side. Length 9-11 millim. Hab. Mexico, Vera Cruz (Sallé), Oaxaca (Hoge). Found by Hége in some numbers. This species might be placed either in Schenicus or Epitragus, having some of the characters of both. 18. Schenicus yucatanensis. Epitragus yucatecus, Deyr. in litt. Oblong obovate, convex, dark reddish brown, with fine scattered yellowish pubescence. Head closely and rather coarsely punctured, the epistoma emarginate in front; prothorax a little broader than long, convex in front, widest at the base, the sides rounded and narrowing from the base, hind angles subacute not prominent, anterior angles not prominent, the base bisinuate, very closely equally and rather coarsely punctured ; elytra wider than the thorax, widest behind the middle, with rows of shallow grooves obsolete at the apex, the interstices closely finely and confusedly punctured, the dorsal grooves each with an irregular row of slightly coarser impressions; the prosternum horizontal, a little produced behind, the apex rounded; the mesosternum rounded and declivous in front, not ridged or formed to receive the prosternum. Length 10 millim. Hab. Mexico (coll. F. Bates). One example. The structure of the pro- and mesosternum in this species is the same as in S. vestitus, from which, and from Epitragus emarginatus and E. salle (apart from the differently formed mesosternum), it may be known by its almost obovate form. _ EPITRAGUS. 23 EPITRAGUS. Epitragus, Latreille, Hist. Nat. Crust. et Ins. x. p. 822 (1804) ; Lec. Class. Col. N. A. part i. p. 215 (1862) ; Horn, Rev. Ten. N. A. p. 263 (1870) ; Lec. & Horn, Class. Col. N. A. p. 363 (1883). This New-World genus, as here understood, ranges from the Southern United States to the Argentine Republic, occurring also in the Sandwich Islands and in the West Indies. Most of the Peruvian and all the Chilian species at present referred to Epi- tragus will probably have to be placed in other genera. All the species here referred to it have a prominent prosternal process received by the mesosternum, which is furnished with a strong V-shaped elevation, concave within. The genus is readily divided into two sections—one with the middle lobe of the epistoma emarginate in front, EL. fuscus, Latr., from Cayenne, and the type of the genus, belongs to this group, which ranges from Mexico to Buenos Ayres; the other, with the epistoma produced and rounded in front (the anterior margin of the head appearing trilobed), of wider and more northern distribution. Numerous large metallic brassy or bronze species of the second group are peculiar to the Southern States, Mexico, and Guatemala. The females (not the males, as stated by Leconte) of some of the species found in the Southern States and Mexico have the disc of the thorax flattened and with a promi- nent elevation on each side, often excavated within and enclosing a scutiform or triangular excavation. Some allied genera (Nyctopetus and Geoborus) are peculiar to Chili and Peru, and Chilometopon, Horn, to California. But few of the South-American species have been described as yet, though numerous in collections. pitragus is well represented in Central America by upwards of thirty species. ‘The different species are found upon leaves and herbage, and, unlike the allied groups, seem to like the sun. One species has been bred from cocoons found in the earth. These insects when freshly emerged are, in addition to the usual pubescence, densely covered with a sort of mealy efflorescence, which soon wears off. Sect. 1. Epistoma emarginate in front. 1. Epitragus aurulentus. (Tab. I. fig. 19.) Epitragus aurulentus, Kirsch, Berl. Zeit. 1866, p. 189°. Epitragus denticulatus, Maklin in litt. Hab. Mexico?; Costa Rica (coll. F. Bates, Van Patten), Irazu (Rogers); Panama, Volcan de Chiriqui, La Caldera, David, Bugaba, Tolé (Champion).—CoLomBia, Bogota !; Jamaica; BRraziu? This is a common species in the State of Panama. It may be known from the others of the section, in which the epistoma is emarginate in front, by the variegated golden pubescence of the thorax; the thorax is wider behind, the hind angles more acute and the punctuation closer and finer, and the rows of elytral punctures deeper and stronger 94 HETEROMERA. (especially behind) than in the allied species. The long series of examples before me vary in size from 93-14 millim. In Mr. F. Bates’s collection there is an example of this species labelled as from Mexico, and another Brazil (2); both localities require, I think, confirmation. Some allied undescribed species from Venezuela, Colombia, and Brazil exist in collections. 2. Epitragus sallei. Epitragus sallei, Haag in litt. Oblong ovate, convex, reddish brown or piceous, shining, with very short scattered appressed yellow hairs, when fresh densely clothed with yellowish-white mealy efflorescence. Head closely and rather coarsely punctured, the epistoma rounded emarginate in front; prothorax broader than long, convex in front, widest at the base, the sides nearly straight behind, rounded and narrowing in front, hind angles subacute not prominent, anterior angles obtuse, the base bisinuate and with a shallow oblique impression on each side near the middle, closely and unequally punctured, the punctures fine and crowded at the sides and coarser and more scattered along the middle, and with a smooth central line; elytra wider than the thorax, convex, with rows of shallow grooves, in each of which are some scattered coarse punctures, the interstices very closely finely and confusedly punctured. Length 94-134 millim. Hab. Mexico (coll. F. Bates), Vera Cruz, Campeachy in Yucatan (Sallé); GuaTeMaLa, San Gerénimo, Paso Antonio (Champion); Nicaragua, Chinandega (Sallé).—Sovutu America, Peruvian Andes (coll. P. Bates). Narrower and a little more convex than LH. aurulentus; the thorax more convex, more rounded at the sides, the hind angles less acute, the punctuation unequal, and the pubescence less distinct. In some examples the thorax is a little narrower and more rounded at the sides than in others. 3. Epitragus emarginatus. Closely allied to E. salle, and differing as follows :—The thorax is more equally and finely punctured, more rounded at the sides, nearly as wide at the base as the elytra, the punctures along the middle closer and finer, the basal impression on each side shallower and less distinct; the elytral grooves deeper, the inter- stices more finely and closely punctured. Length 9-11 millim. Hab. Panama, Volcan de Chiriqui, David (Champion). Fight examples. From EF. aurulentus it may be known by the thinner and less varie- gated pubescence of the upper surface, the narrower and more convex form, and the thorax less finely punctured and more rounded at the sides, with the hind angles more obtuse. An allied species from Carthagena is labelled E. lebasii, Dej., in Mr. F. Bates’s collection; E. fuscipes, Latr., from Colombia, must also be allied to this species. 4. Epitragus nigricans. (Tab. I. fig. 18.) Ovate, rather broad, convex, blackish bronze, clothed with very fine, short, scattered appressed cinereous hairs. Head with the anterior margin and the vertex very finely and closely, and the space between the eyes EPITRAGUS. 25 rather coarsely punctured, the epistoma emarginate in front and not produced ; prothorax almost as long as broad, convex, widest at the base, the sides rounded and strongly narrowed in front, the hind angles not acute, the front angles obtuse, finely, very closely, and equally punctured, with a smooth narrow central line, and a shallow transverse impression near the base in front of the scutellum; elytra a little broader than the thorax at the base, rather short, and strongly convex, with regular rows of coarsish punctures, the interstices very closely, finely, and confusedly punctured. Length 10 millim. Hab. Panama, Tolé (Champion).—Cotomsta, Carthagena (coll. F. Bates). One example from each locality. This species may be known by its short, broad, convex form, its dark colour, and the very fine close punctuation of the thorax and of the interstices of the elytra. Sect. 2. Epistoma produced and rounded in front. a, Sexes dissimilar ; the disc of the thorax in the female flattened or excavated, and often with a ridge on each side. 5. Epitragus bicarinatus. (Tab. I. figg. 212, 22 4.) Oblong ovate, rather broad, brassy with a cupreous tinge, somewhat densely clothed with yellowish pubescence. Head long, closely and finely punctured, the epistoma produced and rounded in front,—in the female trans- versely impressed behind the eyes, the vertex raised in the middle and longitudinally convex, and the eyes feebly carinated within; prothorax—in the female smooth, shining, scarcely pubescent, very sparingly - and finely punctured, broader than long, narrowing from the base forwards, the lateral margins thickened and reflexed and a little sinuate towards the front, the anterior angles very prominent, acute and parallel, the hind angles acute, prominent, and outwardly directed, the base bisinuate, the disc with a prominent oblique ridge on each side extending to the anterior margin and enclosing a long scutiform depression, on each side, a little before the middle, between the elevations and the lateral margin a deep rounded impression, the anterior margin a little raised and emarginate between the elevations,—in the male closely and finely punctured, not smoother or less pubescent than the elytra, about as long as broad, the lateral margins not thickened, the angles acute and prominent, with an indistinct central channel, the disc flattened in front, and with a shallow impression at the base in front of the scutellum ; elytra broader than the thorax, scarcely narrowing behind, very closely and finely punctured. Length 124-133 millim. (¢ 9.) Hab. Mexico, Vera Cruz (Sallé), Almolonga and Jalapa (Hége). Sent in plenty by Hége, and labelled E. dicarinatus, Chev., in the Sallé collection. The sexes of this species are so dissimilar, that I, at first, felt some hesitation in considering them as of one species; Hége sent numbers of each from both localities. I have dissected a large number of examples, and find that those with the thorax ridged are females, and those with the thorax simple males. The males of the allied E. acutus, Lec., E. arundinis, Lec., and E. canaliculatus, Say, are stated by Leconte to have the thorax ridged; but in the allied Central-American species I find the reverse to be the case. The female of EZ. dicarinatus may be known at once from its allies by the structure of the long exserted head, and by the smooth, shining, acute-angled and ridged thorax. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, August 1884. EE 26 HETEROMERA. 6. Epitragus ornatus. (Tab. I. fig. 20.) Oblong ovate, rather broad, brassy seneous, clothed with cinereous pubescence. Head rather short, closely and finely punctured, epistoma produced and rounded in front; prothorax—in the female broader than long, narrowing from the base forwards, the lateral margins sinuate (not straight) thickened and reflexed and abruptly narrowing in front, the base bisinuate, the disc with an oblique ridge on each side extending to the anterior margin (which is a little raised and feebly emarginate between) and enclosing a large flattened shield-shaped impression, the elevations a little thinner in front and each with a tuft of yellowish decumbent hair, the anterior angles acute, prominent, and parallel, the hind angles thickened and subacute, with a deep rounded excavation on each side near the base, smooth, shining, very finely and sparingly punctured, sparingly pubescent,—in the male about as long as broad, very slightly rounded at the sides, closely and finely punctured, with a smooth central line, and the base with a feeble oblique impression on each side just within the margin; elytra short, broader than the thorax, scarcely narrowing behind, very closely, finely, and equally punctured. Length 12-123 millim. (¢ 9.) Hab. Mexico, Matamoras, Puebla (coll. F. Bates), Izucar, Guanajuato (Sal/é). Six examples. I have seen this species labelled E. acutus, Lec. ‘The female of E. ornatus may be known at once by the tufts of yellow hair on the front of the thorax. 7. Epitragus hogei. Oblong ovate, brassy with a cupreous tinge, clothed with yellowish or cinereous pubescence. Head closely and finely punctured, the vertex in the female with two broad shallow longitudinal impressions separated in the middle by a fine indistinct ridge, the epistoma produced and rounded in front; prothorax—in the female transverse, the sides straight, narrowing from the base forwards, the lateral margins a little thickened and reflexed, the front angles rather prominent, acute, and directed a little inwards, the hind angles acute but not very prominent, the base feebly bisinuate, with a smooth shallow central line or channel, the disc raised towards the front, flattened and excavated within, enclosing a shallow triangular impression, closely, finely, and equally punctured, rather shining,—in the male less transverse, more closely and distinctly punctured, the disc very slightly flattened [not excavated], and the prominent anterior angles broader and triangular; elytra wider than the thorax, very closely and finely punctured, with indistinct traces of shallow fine grooves. Length 12-123 millim. (¢ 2.) Hab. Mexico, Misantla, Jalapa, Cerro de Plumas (Hoge). Nine examples, of which seven are females. The male of this species may be known from that sex of FE. bicarinatus by the thorax being less widened at the base, the front angles broad and triangular, and the hind angles less acute and not produced; the female is abundantly distinct. 8. Epitragus angusticollis. Oblong ovate, brassy neous, somewhat densely clothed with cinereous pubescence. Head closely and finely punctured, the epistoma produced and rounded in front; prothorax broader than long, comparatively narrow, Widening but little behind, the lateral margins equally thickened and reflexed from base to apex, almost straight, the anterior angles are much produced, very prominent and acute and directed a little outwards, the hind angles obtuse not prominent, the base feebly bisinuate, with a smooth central line, the disc raised in front and with a rounded elevation on each side, shallowly impressed at the base and near the anterior margin, closely and finely punctured; elytra much wider than the thorax, closely and very EPITRAGUS. 27 finely punctured, with shallow grooves (in which the punctures are a little coarser) distinct towards the suture and obsolete at the sides, and near the apex a few small raised points. Length 123 millim. (9.) Hab. Mexico, Presidio (Forrer). One female example. Near E£. héget (2), but with the thorax proportionately narrower, more closely and distinctly punctured, the lateral margins more strongly thickened, the anterior angles longer and more prominent, and the hind angles obtuse, the vertex not impressed, &c. 9. Epitragus littoralis. Oblong ovate, rather broad, dull obscure eneous, clothed with short cinereous pubescence. Head exceedingly closely and finely punctured, the epistoma produced and rounded in front; prothorax in the female about as long as broad; the sides sinuate and narrowing from the base forwards, the lateral margins reflexed and thickened, the anterior angles acute, thin, straight, and not very prominent, the hind angles thickened, subacute, and not prominent, the disc with a very prominent, thick, longitudinal (not oblique) elevation on each side, starting from near the base and reaching the anterior margin (which is not raised between), the elevations rounded in front, the base very feebly bisinuate, finely and very sparingly punc- tured, almost smooth,—in the male broader and more convex, the sides rounded, the base more strongly bisinuate, extremely finely and closely punctured, and with a smooth central line; elytra wider than the thorax, rather broad, scarcely narrowing behind, exceedingly finely and closely punctured. Length 13 millim. (¢ @.) Hab. Mexico, San Blas and Mazatlan (Forrer). Two examples. In the female of this species the thoracic elevations are very prominent and subparallel, not oblique; the punctuation of the elytra is exceedingly fine and close. The male is from Mazatlan, and the female from San Blas; and though differing considerably, I believe they belong to one and the same species, an ally of H. arundinis, Lec. 10. Epitragus acutus. Epitragus acutus, Lec., new sp., 373, p. 108 (1866)*; Horn, Rev. Ten. N. A. p. 264 (1870)’. Hab. Nortu America, Kansas and Texas! 2.—Mexico 12, Monclova in Coahuila, and Minas viejas (Dr. Palmer). I refer with some doubt three examples to this species. 11. Epitragus rorulentus. Oblong ovate, dull neous, clothed with very fine scattered cinereous pubescence. Head closely and finely punctured ; prothorax broader than long, narrowing from the base, the sides a little rounded (and sinuous near the front angles), the angles acute, but not very prominent, the base bisinuate, with a smooth central line (sometimes a little impressed, sometimes obsolete), closely and finely punctured,—the disc in the female raised and flattened in front, and with an elevation on each side extending to the anterior margin, enclosing a long scutiform excavation, and the lateral margins raised and thickened; elytra wider than EE 2 28 HETEROMERA. the thorax, rather broad, very closely and finely punctured, with some indistinct shallow grooves towards the suture. Length 11-12 millim. (¢ 9.) Hab. Mexico, Monclova, Parras, and Saltillo in Coahuila (Dr. Palmer), Guanajuato (Sallé). Seven examples, of which four are males. The sides of the thorax in the female of this species are not straight, but a little rounded (especially in front), and scarcely straighter than in the male; the angles, though somewhat acute, are not very pro- minent. Allied to E. canaliculatus, Say. | 12. Epitragus incisus. Oblong ovate, broad, obscure brass with a cupreous tinge, somewhat densely clothed with short cinereous pubescence. Head closely and finely punctured, epistoma produced and rounded in front, with a short, indistinct, longitudinal elevation; prothorax a little broader than long, the sides almost straight from the middle nearly to the base, slightly rounded and narrowing in front, the lateral margins reflexed and thin, the front angles a little prominent and acute, the hind angles scarcely prominent and subacute, the base strongly bisinuate and on each side from the central lobe to the angles straight, very finely and sparingly punctured, with a deep, broad, central channel from base to apex, the disc a little raised near the anterior margin on each side of the central groove; elytra wider than the thorax, comparatively broad and short, narrowing but little towards the apex, very finely and sparingly punctured, and with shallow grooves. Length 134-15} millim. (.) Hab. Mzxtco, Tres Marias Islands (forrer). Three examples. This species may be known by its comparatively broad form, and canaliculated thorax; the elytra are much broader than the thorax. 13. Epitragus canaliculatus. Epitragus canaliculatus, Say, Long’s 2nd Exped. p. 281 (1824)’; Leconte, New Sp. p. 109 (1866) ; Horn, Revis. Ten. N. A. p. 264 (1870). Hab. Norta America, Pennsylvania, Missouri, and Southern States’, Colorado, New Mexico, and Arizona 2,—Mexico, Northern Sonora (Morrison), Chihuahua (Buchan- Hepburn). I have not seen North-American examples of this species; the determination is, in consequence, a little doubtful. 14. Epitragus scutatus. Oblong ovate, rather broad, dull eneous, with fine scattered cinereous pubescence. Head rather smooth, closely and very finely punctured, the eyes with a fine supraorbital carina above, the epistoma produced and rounded in front; prothorax broader than long, narrowing from the base, the lateral margins thickened, slightly rounded at the sides, and a little sinuate before the thickened, prominent, and acute front angles, the hind angles thickened and somewhat obtuse, not prominent, the base strongly bisinuate, the disc raised and flattened in front, and with a short elevation on each side enclosing a shallow scutiform excavation the anterior margin between the elevations slightly raised and feebly emarginate, with an indistinct smooth EPITRAGUS. 29 central line, and a shallow transverse impression at the base, the disc sparingly, and the sides closely and finely punctured ; elytra wider than the thorax, rather short, closely, finely, and equally punctured. Length 12 millim. (9.) Hab, Muxico, Guanajuato (Sal/é). One female example. Near E. rorulentus; the head with a fine supraorbital carina, the hind angles of the thorax obtuse, and the anterior angles thickened and very prominent. | 15. Epitragus foveatus. Ovate, rather broad, obscure bronze, thinly clothed with short, fine, cinereous pubescence. Head closely and finely punctured, the epistoma produced and rounded in front, the eyes carinated within; prothorax broader than long, narrowing from the base forwards, the sides almost straight, or rounded a little in front, the base bisinuate,—in the female the lateral margins are thickened and slightly reflexed, the disc with an oblique elevation on each side extending to and connected in front by an elevation of the anterior margin, the elevations enclosing a shield-shaped flattened space, which is sometimes feebly carinated in the middle, the raised part of the anterior margin feebly rounded, emarginate, closely and very finely punctured, the front angles a little prominent, subacute, the hind angles not prominent, subacute,—in the male the thorax is a little more rounded at the sides in front, the front angles a little more acute and prominent, the lateral margins not thickened, the elevations almost or quite obsolete, and the punctuation is more distinct; elytra broader than the thorax, rather short, and narrowing but little behind, with in- distinct rows of fine punctures towards the suture, the interstices very finely and closely punctured, and with large scattered angular, or transverse, shallow, irregular wrinkles at the sides. Length 91-12} millim. (¢ 2.) Hab. Mexico, Parada, Las Peras, Yolos (Sallé), Cerro de Plumas, Jalapa, Oaxaca (Hoge). Fourteen examples, of which ten are females. This species is allied to H. acutus, Lec., and others; from the species with similarly formed thorax, it may be known by the elytra being irregularly and strongly wrinkled towards the sides. 16. Epitragus metallicus. Oblong ovate, convex, very variable in colour, metallic brass, seneous, or bronze, often tinged with blue, green, or cupreous, shining, clothed with ashy pubescence. Head somewhat coarsely and closely punctured, the epistoma rather convex, produced, and rounded in front, the lateral lobes a little prominent and divergent, and separated from the central lobe by a rather deep impression ; prothorax in the male about as long as broad, in the female transverse and broader in front, narrowing from the base, the sides a little rounded, and often a little sinuate near the angles, the base bisinuate, the lateral margins very slightly thickened, the angles a little prominent (rarely produced) and subacute, sparingly and rather finely punctured (the disc sometimes almost smooth) in the male, more closely and coarsely punctured in the female, the female with a more or less distinct central channel and the disc flattened in front (sometimes with a feeble elevation on each side); elytra wider than the thorax, closely, distinctly, and rather coarsely punctured, with shallow grooves, which are sometimes obsolete. Length 9-123 millim. (¢ 2.) Hab. Mexico, Puebla, Toluca, Cuernavaca (coll. F. Bates), Cerro de Plumas, Jalapa, Mexico city, Misantla, Almolonga, Oaxaca (Hoge), Izucar, Yolos, Juquila, Chiapas, Oaxaca, Cordova, Cuernavaca, Capulalpam, Puebla, Toluca, Orizaba, Totosinapan, 30 HETEROMERA. Guanajuato (Sallé), Mexico city, San Luis Potosi, Queretaro (Dr. Palmer) ; GuatE- MALA, near the city (Salvin), Ostuncalco, Quezaltenango 7800 feet, Duefias (Champion) ; Costa Rica (Van Patten, coll. F. Bates). Common and widely distributed in Mexico, becoming rarer southwards. The examination of a large number of specimens of both sexes from many localities has convinced me that they should all be referred to one and the same species. Narrower and more shining than E. acutus, E. canaliculatus, &c.; the disc of the thorax in the female only slightly flattened, and with a very feeble elevation (often quite obsolete) on each side; the lateral lobes of the front are slightly divergent, and separated by a distinct impression from the rather convex epistoma; the prevailing colour is bright metallic brass, varying to dark bluish bronze; in some examples the thoracic angles are more acute than in others, and the punctuation of the upper surface varies a good deal. A pair from Toluca have a distinct impression in the centre of the anterior margin of the thorax, and another impression midway between the eyes. Specimens of the dark forms denuded of pubescence are very puzzling. In Mr. F. Bates’s collection there is an example of this species from Missouri, labelled £. canaliculatus, Say; it is possible, however, that there is some mistake about the locality, or that two species are confounded under this name by American entomologists. Labelled in the Sallé and other collections under the MS. names of EH. juvencus, Dej., conicicollis, Chev., plumbeus, Dej., niger, Sturm, angustatus, Chev., thoracicus, Sturm, angulatus, Chev., metallicus, Haag, ahenus, Sturm, cupreus, Dej., candezet, Mak., chalybeus, Chev., &c. 17. Epitragus chevrolati. Ovate convex, bright brass with a cupreous tinge, densely clothed with yellowish-brown scales or hairs, and the head and thorax, in addition, with decumbent matted hair. Head convex above, coarsely and some- what closely punctured, the epistoma convex, broad, produced and rounded in front, the pubescence long and matted, the labrum prominent and excavated within; prothorax broader than long, narrowing from the base, convex in front, the sides a little rounded, the angles not very prominent and subacute, finely and rather closely punctured, with a smooth central raised line slightly impressed at the base, and the disc in the female with a large, shallow, rounded impression before the middle, the base strongly bisinuate, the pubescence rather long and matted, and transversely arranged ; elytra broad, convex, exceedingly finely and closely punctured, with shallow indistinct grooves, which are often obsolete, the apices rather blunt, and with a short marginal tooth on each side near the suture, the base slightly flattened in the middle. Length 13-15 millim. (¢ 9.) Hab. Mexico (coll. F. Bates), Cuernavaca, Puebla, Guanajuato (Sallé), Jalapa, Misantla (Hége), Ventanas (Forrer); Guatema.a, near the city (Salvin); Nicaracua, Chontales (Belt). Rather common in Mexico, and labelled EF. chevrolati, Bouc., in Mr. F. Bates’s collection. A broad, convex, large species, bright metallic brass in colour, and very pubescent; the elytra bluntly toothed on each side near the apex. The Chontales specimen has the thorax more finely and closely punctured, though agreeing in other respects. EPITRAGUS. 3l b. Thorax similar in both sexes. 18. Epitragus grandis. Oblong ovate, dull brass, often with a cupreous tinge, somewhat densely clothed with fine cinereous pubescence, when fresh covered with a white mealy efflorescence. Head closely and finely punctured, the epistoma broad and convex, produced and rounded in front, the lateral lobes divergent and prominent; prothorax transverse, narrowing from the base, the sides a little rounded, the anterior margin nearly straight, the anterior angles obtuse and not produced, the hind angles acute and not very prominent, finely and closely punctured, with a smooth central line a little impressed at the base, the base bisinuate, and slightly im- pressed obliquely on each side, just within the margin; elytra broader than the thorax, rather long, finely, confusedly, and rather closely punctured, with shallow grooves, the apices feebly mucronate; the prosternal process longitudinally impressed in the middle, between the coxw; the anterior tibie widened at the apex, and the outer angles bluntly toothed. Length 15-18 millim. (¢ 92.) Hab. Mexico, Oaxaca (coll. Ff. Bates), Vera Cruz, Ktla, Puebla (Sadlé), Misantla, Jalapa, Almolonga (Hége), Ventanas, Presidio (forrer). This is the largest species of the group known to me. Labelled £. pruinosus, Chev., in the Sallé collection, a name used by Horn for another species. 19. Epitragus acutangulus. Oblong ovate, convex, dark reddish-brown, inclining to bronze, sparingly clothed with fine cinereous pubescence. Head closely punctured (the vertex rather coarsely, the front finely and more closely), the epistoma pro- duced and rounded in front, with a fine supraorbital carina; prothorax a little broader than long, convex, narrowing from the base, the sides rounded, the front angles acute and prominent, the hind angles acute, very prominent, and outwardly directed, finely, equally, and not very closely punctured, with a central line or groove [obsolete in front, distinct near the base], the base bisinuate, with an indistinct oblique impression on each side just within the margin; elytra wider than the thorax, narrowing a little towards the apex, closely and finely punctured, with shallow grooves. Length 14} millim. Hab. Guatmmaa, Paraiso (Champion). Near £. grandis, but smaller, the thoracic angles more acute and prominent, the lateral lobes of the front not divergent, the thorax more sparingly punctured, &c. One example. 20. Epitragus plicatus. (Tab. I. fig. 23.) Ovate, broad, strongly convex, bright brass with a cupreous tinge, rarely dark bronze, shining, somewhat densely clothed with yellowish appressed hairs. Head convex, with some coarse scattered punctures between the eyes, the anterior margin and vertex closely and more finely punctured, the epistoma broad, convex, produced and rounded in front; prothorax broader than long, wide at the base, narrow in front, the sides scarcely rounded, nearly straight, convex in front, the front angles a little produced and obtuse, the hind angles acute, closely and finely punctured, the punctures more scattered on the disc, with a smooth central line, and a shallow transverse impression near the base in front of the scutellum; elytra broader than the thorax, rather short, convex in front, depressed in the middle at the base, the sides sinuate, very finely and closely punctured, with large, scattered, subtriangular, shallow depressions or wrinkles behind the middle and along the sides, near the apex on each side, a little distant from the 32 HETEROMERA. tion forming the termination of the marginal carina, which suture, a short, prominent, rounded eleva th very closely and finely punctured. turns inwards.a little before the apex. Benea Length 121-14 millim. (¢ 9.) Hab. Mexico (coll. F. Bates), Capulalpam, Las Peras, Juquila (Sallé), Almolonga, Misantla, Jalapa, and Mexico city (Hoge). This is one of the most distinct species of the genus, and known by its short, broad, convex form, bright metallic colour, and the strongly wrinkled elytra, the apices of which are apparently emarginate. In most collections, and often labelled E. plicatus, Dej., and £. apicalis, St.; it seems to be not uncommon in Mexico. £. rugosus, Cast., from Brazil, to judge from the description, must be allied to this. 21. Epitragus inzequalis. Oblong ovate, convex, brassy with a cupreous tinge, clothed with short, scattered, cinereous appressed hairs. Head finely, closely, and equally punctured, epistoma a little produced triangularly in front; prothorax a little broader than long, the sides almost straight, obliquely narrowing from the base, the front angles acute and prominent and directed forwards, the hind angles acute, the base bisinuate, and with a shallow impression in front of the scutellum, and a short transverse impression in the middle on each side just within the margin, the disc with a shallow sinuous impression on each side near the middle, very finely and sparingly punctured; elytra convex, a little broader than the thorax, closely and finely punctured, the sides and apical half with large irregular transverse or oblique shallow triangular impressions or wrinkles, and near the apex on each side, a little distant from the suture, a short sinuous elevation, the space between which and the suture concave. Length 11-12 millim. Hab. Mexico, Misantla and Almolonga (Hoge). Two examples. Allied to £. plicatus, but narrower, and the margin of the elytra not toothed near the apex. 92. Epitragus micans. Oblong ovate, convex, bright metallic brass, the thorax cupreous, clothed with coarse, scattered, ashy pubescence. Head closely and rather coarsely punctured, the epistoma convex, and produced and rounded in front; prothorax transverse, convex in front, slightly rounded at the sides, narrowing from the base, the anterior angles not prominent, obtuse, the hind angles not produced, slightly pointed, the base strongly bisinuate, closely and somewhat coarsely punctured, with a slightly raised smooth central line, and a short longi- tudinal impression in the middle at the base; elytra a little broader than the thorax, short, rather broad behind, sparingly, distinctly, and somewhat coarsely punctured. Length 12 millim. Hab. Mexico, Chiapas (Sal/é). One example. Of the size and general form of H. plicatus. Broader and more convex than E. metallicus ( 2 ), the pubescence coarser and more scattered, the anterior angles of the thorax obtuse and not prominent, &c. 23. Epitragus guatemalensis. Oblong ovate, convex, bright brassy «neous, clothed with scattered, coarsish, ashy pubescence. Head broad, convex, closely and rather coarsely punctured, the epistoma broad, convex, produced and rounded in front ; EPITRAGUS. 33 prothorax transverse, convex in front, narrowing from the base, the sides a little rounded, the angles a little prominent and subacute, the base strongly bisinuate, closely and somewhat coarsely punctured, with a smooth, slightly raised, central line, which is slightly impressed before the base, the base with an indistinct oblique impression (sometimes obsolete) on each side just within the margin; elytra wider than the thorax, somewhat parallel, the sides but little rounded, finely, distinctly, but not very closely punctured, with shallow, indistinct grooves, more distinct towards the apex than at the base. Length 114-121 millim. Hab. British Honpuras, Rio Sarstoon (Blancaneaux) ; Guatemata (Sallé), Chinautla, Aceituno, Guatemala city (Salvin), Duefias, Cerro Zunil, Ostuncalco, Capetillo, Quezaltenango, Totonicapam (Champion); Costa Rica (Van Patten). A common species in Guatemala. Labelled EL. chevrolati, Haag, in the Sallé collec- tion. ‘This species may be known by its bright metallic brassy colour, coarse scattered pubescence, the short transverse thorax, the elytra but little rounded at the sides, and the distinct punctuation. In some examples the elytra are smoother and more sparingly punctured than in others. 24, Epitragus aurichalceus. Ovate, bright brass with a cupreous tinge, densely clothed with brownish-yellow pubescence. Head very closely and finely punctured (the space between the eyes smoother), the epistoma produced and rounded in front; prothorax transverse, narrowing from the base, the sides a little sinuate and almost straight, the anterior angles obtuse and not produced, the anterior margin almost straight, the hind angles not very prominent, subacute, the base bisinuate, closely but not very finely punctured, with a smooth central line; elytra much broader than the thorax, rather short, very finely and closely punctured, the apices rounded, slightly flattened in the middle near the base. Length 114 millim. ( 9.) Hab. Mexico, Guanajuato, Oaxaca (Sallé). Two examples. Labelled EZ. mus, Haag, in the Sallé collection. Allied to H. chev- rolati, but smaller, the head smaller and more finely punctured, the epistoma less convex, the thorax comparatively narrower, the apices of the elytra rounded. In the example from Guanajuato (a female) the elytra are more sparingly punctured and shallowly grooved, and the thorax is impressed in the middle at the base. 25. Epitragus eratus. Oblong ovate, brassy with a cupreous tinge, rather dull, somewhat densely clothed with fine yellowish-brown pubescence. Head very closely, finely, and confusedly punctured, the epistoma produced and rounded in front; prothorax transverse, not very convex, the sides rounded and narrowing in front, widest a little before the base, anterior margin almost straight, anterior angles subacute and scarcely produced, hind angles rectangular, the base bisinuate, very closely, finely, and confusedly punctured, almost rugulose ; elytra wider than the thorax, rather broad behind, very closely and finely punctured, the base, sides, and apex still more closely and confusedly punctured, towards the apex with some fine raised points or granules. Length 11 millim. Hab. Mexico, Jalapa (Hoge). One example. Near £. aurichalceus, but with the thorax more transverse, rounded at the sides, and more closely punctured (almost rugulose). BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, August 1884. FF 34 HETEROMERA. 26. Epitragus parviceps. Oblong ovate, convex, bright brassy neous, densely clothed with fine cinereous pubescence. Head small, finely and closely punctured, the epistoma produced and rounded in front 5 prothorax a little broader than long, narrowing from the base, the sides slightly rounded, the anterior angles produced though scarcely acute, hind angles not prominent, subrectangular, the base feebly bisinuate, feebly and very closely punctured, with a fine smooth central line which is obsolete in front; elytra a little broader than the thorax, convex, a little rounded at the sides, finely, evenly, and very closely punctured, with indistinct . traces of shallow dorsal grooves. Length 10 millim. Hab. Mexico, Oaxaca (Sai/é). One example. Resembling a small male £. metallicus, but more finely and closely punctured, the head smaller, and the lateral lobes not prominent, the angles of the thorax less prominent, &c.; narrower than E. aurichalceus, the elytra proportionately much narrower. 27. Epitragus canus. Oblong ovate, light «neous, densely clothed with fine cinereous pubescence. Head very closely and somewhat coarsely punctured, the epistoma produced and rounded in front, the vertex with some coarse long hairs ; prothorax a little broader than long, narrowing from the base, the sides nearly straight, the angles rather prominent and subacute, the base strongly bisinuate, and the margin interrupted on each side about the middle by an oblique impression, finely and rather closely punctured, with a smooth, distinct, central line ; elytra broader than the thorax, extremely finely and closely punctured; the outer apical angle of the anterior tibiee produced into a short blunt tooth. Length 124 millim. Hab. Mexico (Sallé, ex. coll. Sturm). One example. Labelled E. canus, Haag (plumbeus, Dej.), in the Sallé collection. 28. Epitragus pilosus. Oblong ovate, very convex, reddish brown with a greenish tint, densely clothed with rather long, cinereous, appressed hairs. Head sparingly and coarsely punctured, the epistoma convex, rounded and produced in front; prothorax transverse, convex, widest about the middle, the sides nearly straight behind and rounded in front, the angles not prominent, though acute, rather coarsely and. closely punctured, with a smooth central line which is slightly impressed before the base, the base bisinuate, and with a slight oblique impression on each side just within the margin ; elytra broader than the thorax, convex, rounded at the sides, closely and rather coarsely punctured, the apices somewhat pointed, the pubescence arranged in indistinct rows. Length 12 millim. Hab. Mexico, Vera Cruz (Sail/é). One example. Labelled E. pilosus, Chev., in the Sallé collection. Not very closely allied to any of the other species here recorded, and known by its convex form, and densely pubescent surface; and the pubescence of the elytra arranged in rows. 29. Epitragus cupreus. (Tab. I. fig. 24.)] Oblong ovate, convex, varying in colour from bright brassy eneous to dark bronze, when fresh covered with fine, scattered, cinereous pubescence. Head closely and finely punctured, the epistoma rather convex, and produced and rounded in front; the labrum long and prominent, excavated within; prothorax a little EPITRAGUS. 35 broader than long, convex in front, narrowing from the base, the sides rounded and a little sinuate towards the angles, the anterior angles acute, though not prominent, the hind angles prominent and acute, some- what coarsely and closely punctured, with a smooth central line which is slightly impressed at the base, the base strongly bisinuate; elytra rather long and convex, somewhat pointed behind, a little wider than the thorax, closely, confusedly, and rather coarsely punctured, with indistinct rows of coarser impressions, the apices slightly mucronate ; femora and tibie red or reddish brown, the knees and tarsi darker, in some examples the femora are bright red. Length 12-15 millim. Hab. Guatema.a, Tocoy, Cerro Zunil, San Gerdénimo, Zapote, San Isidro, Duehas, El Reposo, Volcan de Atitlan (Champion); Nicaragua (Sallé), Chontales (Belz) ; Costa Rica (Van Patten), San Francisco (Rogers). A common species in Guatemala, becoming rarer southwards. Larger and longer than EL. guatemalensis ; the thorax longer, more convex, more rounded at the sides, and more closely and coarsely punctured; the elytra somewhat pointed behind, and the legs red. Dark varieties occur in which the punctuation of the thorax and elytra is finer and more scattered. Labelled EH. cupreus, Dej., in the Sallé collection. 30. Epitragus lucidus. Oblong ovate, convex, bright brassy neous, sparingly clothed with fine cinereous pubescence. Head finely and very closely punctured, almost rugulose, the epistoma produced and rounded in front; prothorax broad, a little broader than long, very convex, strongly rounded at the sides, widest a little before the base, narrowing a little in front, the anterior angles slightly produced, triangular, and scarcely acute, the hind angles not produced, straight, and subacute, the base strongly bisinuate, closely and finely punctured, with a fine, smooth, central line which is slightly impressed before the base; elytra broader than the thorax, rather short, rounded at the sides, somewhat pointed behind, very closely, finely, and confusedly punctured, with indistinct shallow dorsal grooves. Length 12-123 millim. Hab. Mexico, Ventanas, Presidio (forrer). Two examples. This species may be known by its comparatively broad convex thorax, the sides of which are strongly rounded. Allied to i. cupreus, plumbeus, &c. 31. Epitragus obovatus. Reversed ovate, convex, dark greenish bronze, rather dull. Head very closely and rather coarsely punctured, almost rugulose, the epistoma convex, produced and rounded in front, the eyes with a fine supraorbital carina, the labrum prominent, excavated within; prothorax a little broader than long, convex in front, the sides rounded and narrowing from the base, the front angles not prominent, obtuse, the hind angles rectangular, the base bisinuate, and with a feeble oblique impression on each side just within the margin, closely and rather coarsely punctured, almost rugulose, with a smooth central line; elytra broader than the thorax, broadest behind the middle, closely and rather coarsely punctured, the punctuation finer and more scattered towards the apex, with shallow grooves. Length 144 millim. Hab. Mexico, Tehuantepec (Sallé). One example. A large convex species, greenish bronze in colour, almost obovate in form; the upper surface comparatively coarsely punctured, and scarcely pubescent. FF 2 36 HETEROMERA. 32. Epitragus pruinosus. Epitragus pruinosus, Horn, Revis. Ten. N. A. p. 264 (1870) ”. Hab. Norra America, Owen’s Valley in California 1, Arizona .—Mexico, Northern Sonora (Morrison). 33. Epitragus plumbeus. | Epitragus plumbeus, Lec. New Sp. 375, p. 109’; Horn, Revis. Ten. N. A. p. 270 (1870)?. Hab. Nortu AMERICA, Kansas }, Trans-Mississippi region 2 Mexico, Northern Sonora (Morrison). 34. Epitragus godmani. (Tab. I. fig. 25.) Oblong ovate, convex, brownish bronze, shining, scarcely pubescent. Head somewhat coarsely and sparingly punctured, the eyes carinated within, the epistoma a little produced and rounded in front, the lateral lobes a little divergent and prominent; the labrum long, not transverse, prominent, concave within ; prothorax transverse, the sides rounded, a little sinuate before the angles, and narrowing a little from the base, the angles acute though not prominent, the base bisinuate, sparingly, equally, and rather coarsely punctured; elytra long, convex, somewhat pointed behind, wider than the thorax, with regular rows of coarsish punctures, the interstices finely, confusedly, and not very closely punctured, the apices a little divergent and mucronate. Beneath shining; the prosternal process pointed at apex, the sides of which (between the coxe) are raised. Length 10-12} millim. Hab. Panama, Bugaba, La Caldera, Volcan de Chiriqui (Champion). A common species in Chiriqui, and known by its shining almost glabrous surface. Allied species occur in Colombia and Brazil. 35. Epitragus communis. Oblong ovate, rather narrow and convex, dark brownish bronze, rather shining, with fine, scattered, cinereous pubescence. Head with the front and vertex closely and finely, the space between the eyes sparingly and coarsely, punctured, the epistoma produced and rounded in front, the lateral lobes divergent ; prothorax broader than long, convex in front, the sides rounded and narrowing from the base, the anterior angles not prominent, obtuse, the hind angles acute and outwardly directed, coarsely and not very closely punctured ; elytra long, convex, somewhat pointed behind, the apices slightly divergent and pointed, with regular rows of coarsish punctures, the interstices rather coarsely and closely punctured; prosternal process impressed on each side, the apex rounded. Length 10-114 millim. Hab. Mexico (coll. F. Bates), Playa Vicente, Cordova (Sallé), Oaxaca, Jalapa, Cerro de Plumas (Hége); Britisa Honpuras, Rio Hondo (Blancaneaur), Belize (coll. F. Bates); Guatemaa, Teleman (Champion). This appears to be a widely distributed species, and common in Mexico. It may be known from E. godmant, by the thorax being more rounded at the sides and more coarsely punctured, and by the rather more pubescent surface. Labelled E. communis, Chev., in the Sallé collection. TYDEOLUS. 37 TYDEOLUS. Tydeolus, ¥. Bates in litt. Closely allied to Schanicus. Head broad, short, the eyes not carinated within, front feebly trilobed, the epistoma a litttle produced and rounded in front, labrum almost hidden; prothorax strongly rounded at the sides, narrowed in front and behind ; elytra rather short, convex, rounded at the sides, a little more than twice the length of the thorax; anterior tibie a little curved, widened on the inner side from the apex to beyond the middle, then suddenly narrowed to the base, the outer apical angle not acute, almost rounded ; legs rather short; tarsi with short spiny hairs beneath; prosternum rounded and declivous behind ; mesosternum simple. Three Mexican species at present constitute this genus. Of a different facies from any of the Epitraginee known to me. May be known from Schenicus by the structure of the anterior tibie, the strongly rounded sides of the thorax, broader head, shorter form, and black colour; the anterior tibiz are apparently thickened in both sexes. 1. Tydeolus atratis. Tydeolus mexicanus, F. Bates in litt. Oblong ovate, convex, black. Head coarsely and closely punctured; prothorax transverse, convex, strongly rounded at the sides, narrowed in front and behind, widest about the middle, front angles obtuse and not produced, almost rounded, feebly sinuate at the sides just before the subacute hind angles, base strongly bisinuate, very closely, evenly, and finely punctured ; elytra convex, a little wider than the thorax, rounded at the sides, the shoulders rounded, closely, evenly, and rather coarsely punctured, with scarcely any trace of strie. Length 73-83 millim. Hab. Mexico (coll. F. Bates), Puebla (Sal/é). Four examples. 2, Tydeolus tibialis. Oblong ovate, rather convex, black with an sneous tinge. Head coarsely and closely punctured; prothorax transverse, convex, rounded at the sides, narrowed in front and behind, widest in the middle, anterior angles obtuse and almost rounded, sides nearly straight (not sinuate just before the base), hind angles rectangular, base strongly bisinuate, anterior margin almost straight, very closely, evenly, and finely punctured; elytra wider than the thorax, rather convex, rounded at the sides, closely, evenly, and rather coarsely punctured, with indications of obsolete strie. Length 8-9 millim. Hab. Mexico (coll. F. Bates). Three examples. Closely allied to 7. atratus, but not so black, the thorax less rounded at the sides and not sinuate just before the base, and the elytra a little more closely punctured. 8. Tydeolus singularis. | Oblong ovate, convex, pitchy black with an eneous tinge. Head coarsely and closely punctured ; prothorax broad, transverse, convex, strongly rounded at the sides, narrowed in front and behind, widest in the middle, anterior angles obtuse and almost rounded, the sides feebly sinuate before the rectangular slightly prominent hind angles, base bisinuate, very closely, evenly, and finely punctured ; elytra a little broader 38 HETEROMERA. than the thorax, convex, rounded at the sides, closely, evenly, and rather coarsely punctured, with shallow but distinct grooves, the punctures not arranged in rows. Length 94 millim. Hab. Mexico, Tehuacan (ége). One example. Larger, broader, and more convex than either 7. atratus or T. tibialis, a Group ZOPHERIDES. Two genera (Zopherus and Nosoderma) represent this group in Central America; the former is peculiar to the New World, and has no very near ally; the latter is perhaps restricted to the Neotropical Region. ZOPHERUS. Zopherus, Castelnau, Hist. Nat. ii. p. 205 (1840) ; Sol. Ann. Soc. Ent. Fr. 1841, p. 39; Lac. Gen. Col. v. p. 91; Horn, Trans. Ent. Soc. Phil. (1867) p. 159. This genus has its head quarters in Central America, and most of the finest species are peculiar to that country; one (Z. chiliensis) extends from Yucatan into South America—to Colombia and Venezuela; several small black species (Z. tristis, concolor, guttulatus, opacus, and gracilis) are found in New Mexico, Arizona, Texas, &c.; one (Z. haldemanni, Horn) in Texas and Northern Mexico; and one (Z. elegans) of which the locality was not mentioned by the describer. Some of the North-American species may eventually be found in Northern Mexico. The different species frequent dry elevated districts, and desert regions, and are found under loose bark, logs, fallen trunks of cacti, &c. ; and sometimes crawling on stumps in the dry season. One species is known to the natives of Guatemala by the name of “cameleon.” They are said to live a very long time without food, and living examples have been exhibited at the meetings of the Entomological Society in London, and also in Paris. The species are difficult to separate, and one or two have been described on insufficient material, upon single examples; abraded or greasy individuals are rather deceptive ; the number and arrange- ment of the tubercles of the elytra and thorax is subject to variation, and often different on one side from the other. Sect. 1. Elytra bituberculate at the apex. 1. Zopherus chiliensis. Zopherus chiliensis, Gray, Griff. Anim. Kingd. p. 796, t. 124. f. 3 (1832) ’. Zopherus bremei, Guer. Rev. Zool. 1844, p.18; Bréme, Ann. Soc. Ent. Fr. 1844, p. 807, t. 9. f. 2”. Hab. Mexico’, Yucatan (coll. F. Bates), Progreso in Yucatan (Hoge), Valladolid in Yucatan (Gaumer); GuateMaua ; Satvapor; NICARAGUA (Sallé), Chontales (Belt, Janson). —CoLomBIA?; VENEZUELA (coll. F. Bates). ZOPHERUS. 39 This, the finest species of the genus, is found in dry elevated districts; it has not yet been received from Costa Rica, or the State of Panama, nor has it ever been taken in Chili. 2. Zopherus mexicanus. Zopherus mexicanus, Sol. Ann. Ent. Soc. Fr. x. p. 44 (1841)'; Gray, Griff. Anim. Kingdom, Append. p. 796, t. 50. f. 5 (1832)?; Hope, Dej. Cat. 3rd ed. p. 207 (descr. nulla) *. Zopherus jourdani, Sallé, Ann. Ent. Soc. Fr. 1849, p. 301, t. 8. f. 4°. Hab. Mexico ! 23 (coll. F. Bates), Chiapas (Sallé); British Honpuras, Rio Sarstoon (Blancaneaux); Guatemata (Sallé)4, Aceituno (Salvin), Panajachel, Godines, Calderas, Capetillo (Champion); Nicaragua (Sallé). This is a pretty common species in the drier parts of the highlands of Guatemala, and found under loose bark, &c., and often crawling on stumps during the dry season. I adopt the name of Z. mexicanus, Sol.; the description of Z. mexicanus, Gray, would apply equally well to any of the black and white species. Z. jourdani, Sallé, is identical with this, and is indeed so labelled in the Sallé collection. Mexican specimens some- times differ a little from those from Guatemala in having the rows of tubercles on the elytra larger and more irregular; but in a long series of specimens intermediate forms will be found. 3. Zopherus jansoni. (Tab. II. fig. 2.) Zopherus jansoni, F. Bates in litt. Head dull black, with a large triangular white patch extending nearly to the anterior margin and spotted with black in the middle; prothorax convex, sides strongly trisinuate and crenulate towards the base, base subtruncate, yellowish white spotted with black, the spots larger and often confluent on the disc and smaller and more distinct towards the sides, with a large oblique black spot at the base on each side; elytra moderately convex, base deeply emarginate and with the margin raised, shoulders produced in front and the angles raised, yellowish white, with rows of large smooth flattened black elevations or spots arranged thus—a row of about four or five very large and subtriangular in shape, a row similar of three or four, a row (often obsolete) of two or three smaller, and a marginal row small of about five, the spaces between the spots with scattered smaller irregular elevations, the spots along the suture more regularly arranged and increasing in size towards the base, the large spots of the first two rows more or less connected by a longitudinal white line or band, apex bituberculate. Beneath dull black; margins of the head, thorax, meso- and metasternum, and ventral segments broadly marked with yellowish white spotted with black; ventral segments with a few scattered shallow punctures, ventral callosity but little promi- nent, the anterior margin of which bisinuate, flanks of the prothorax with a few small scattered tubercles. Length 21-25 millim. Hab. Nicaracva, Chontales (Belt, Janson); Costa Rica (Van Patten), Irazu (Rogers). This species is allied to Z. meaicanus, Sol., but is smaller, narrower, and not so convex; it is more densely clothed with white (especially beneath) than its allies; the elytra have only two distinct rows of large spots, which are usually placed upon [or connected by] longitudinal white lines or bands, the base is strongly emarginate, and the shoulders very prominent. 40 HETEROMERA. 4. Zopherus costaricensis. (Tab. II. fig. 1.) Head dull black, with a few scattered punctures, and marked with white along the sides and between the eyes ; prothorax convex, sides strongly bisinuate and crenulate before the base, base subtruncate, yellowish white, the disc darker, the sides sparingly, and the disc closely, covered with small flattened black tubercles or spots, with an interrupted central white line, and the disc with a transverse or rounded spot on each side before the middle, the anterior margin in the middle marked with black, and the base with:a large oblique black spot on each side; elytra long, convex, base emarginate and the margin raised near the shoulders which are a little produced, yellowish white, with rows of flattened black tubercles or spots arranged thus—a sutural row small and pretty regular, a row of four or five rounded large and prominent, a row of three or four similar wider apart, and a marginal row smaller of five to seven, between the rows of large spots are rows of smaller ones closely crowded together, the spots in the second and third rows connected by a longitudinal white band, apex bituberculate. Beneath black, slightly shining; margins of the head, thorax, meso- and metasternum, and ventral segments marked with yellowish white spotted with black; flanks of the thorax with numerous rounded tubercles; ventral segments with scattered punctures; the whole of the under surface with small scattered indistinct raised spots or tubercles ; ventral callosity prominent, emarginate, and with a protuberance in the centre in front. Length 27-34 millim. Hab. Costa Rica (Sallé, Van Patten), Ivazu, Cache, Rio Sucio, San Francisco 4500 feet (Rogers). I have only seen this species as yet from Costa Rica. Larger than Z. jansoni, the under surface and the thorax above not so smooth and more tuberculate, the shoulders of the elytra not so prominent or produced, more convex, the longitudinal white bands (connecting the rows of large tubercles) on the elytra more distinct, the sutural row of elevations stronger, the flanks of the thorax much more closely and coarsely tuberculate. From Z. mexicanus it may be known by the different arrangement of the elevations or spots of the elytra, those of the second and third rows are stronger and less numerous, and of the interstices smaller and more crowded and collectively arranged in three broad rows, which are separated one from the other by the broadish white bands upon which the larger prominent elevations are placed. 5. Zopherus levicollis. Zopherus levicollis, Sol. Ann. Soc. Ent. Fr. (1841) p. 46°. Hab. Mzxico! (coll. F. Bates), Mexico city (Hoge), San Antonio de Arriba (Sallé), San Miguelito (Dr. Palmer). Var. Venosus. Head black, slightly shining, with scattered rather coarse punctures, and a small triangular white occipital spot; prothorax broad, convex, sides trisinuate and crenulate before the base, white, with small flattened black tubercles or spots, the disc with a black patch about the middle and towards the anterior margin bare and shining leaving a broad black transverse patch in front, the base subtruncate and with a large triangular black spot on each side, with a few scattered impressions closer and more distinct near the anterior margin; elytra convex, base slightly emarginate, shoulders distinct, white, with rows of flattened black tubercles arranged thus—a sutural row of about fifteen to eighteen small and rather recular, a row large and rounded of about eight, a row similar of about seven, a row alittle smaller and wider saat a about six, and a marginal row smaller of six or seven, between the rows are scattered smaller spots, apex ZOPHERUS. 4] ‘bituberculate. Beneath black, shining, with scattered coarsish punctures, which are finer and closer together towards the last ventral segments, ventral callosity emarginate and with a large rounded swelling in the centre in front; flanks of the thorax with a few large coarse impressions. Length 17-23 millim. Hab. Mexico (coll. F. Bates), Juquila, Parada, Capulalpam (Sallé), Mexico city (Hage). This is probably not distinct from Z. levicollis, a species described by Solier from a single worn example. The description is from a beautiful fresh specimen, in the Sallé collection, from Juquila; others from Parada, Capulalpam, and Mexico city are inter- mediate and with the tubercles of the elytra more irregular, but arranged in more or less distinct rows; the sculpture of the upper surface of the thorax varies a great deal, and cannot be relied upon as a specific character; the ventral tubercle is trilobed in front in all the specimens I have examined. The examples I refer ta Z. levicollis are much abraded (apparently), and almost entirely black and shining; the thorax in some specimens is smooth, in others with small flattened tubercles and a few scattered impressions ; the elytra with coarse irregular elevations, often more or less confluent, or in the form of transverse wrinkles. In the long series of specimens before me intermediate forms are to be found. 6. Zopherus tuberculatus. (Tab. II. fig. 3.) Head dull black, with a triangular white occipital patch ; prothorax convex, the sides very feebly trisinuate (almost rounded before the middle) and finely crenulate towards the base, white, the disc with a broad black patch extending from the base to the anterior margin [the white colour extending a little inwards about the middle], and some scattered black spots towards the sides, almost smooth except for a few indistinct flattened tubercles on the disc and some scattered fine punctures, base subtruncate and the margin punctured; elytra of an elliptic form, convex, white, with five regular rows of flattened black tubercles arranged thus—a sutural row small running one into the other towards the base, separate at apex, a row of about eight larger and almost touching the sutural row, a row of about seven the same size, a row similar, and a marginal row small of about eight or nine, the third and fourth rows with the spots wider apart and more distinct one from the other, the spaces between the tubercles with small black spots, the shoulders prominent, apex bituberculate and the tubercles flattened and not very prominent. Beneath black, slightly shining, with scattered punctures finer towards the last ventral segment, ventral callosity produced in the centre of the anterior margin. Length 20 millim. Hab. Mexico, Tehuantepec (Sal/é). One example. Allied to Z levicollis, but longer, not so convex, thorax proportion- ately broader at the base; the tubercles are flatter and less raised, though prominent, than in the allied species. 7. Zopherus maculatus. Head dull black, with a triangular white spot between the eyes; prothorax convex, sides trisinuate and crenulate towards the base, white, with scattered small black spots and with four ill-defined larger ones on the disc—one at the base extending forwards, one near the anterior margin, and one on each side near the middle; elytra rather convex, shoulders prominent, white, with rows of black tubercles arranged thus—a BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, August 1884. GG 42 HETEROMERA. sutural row small and crowded and distinct only towards the base, a row much larger of threo or four, a row similar, and a marginal row small of about six pretty regular, the spots in the second and third rows irregularly arranged, a few scattered small black spots between the larger ones, apex bituberculate, Beneath dull black, not shining, hind margin of the ventral segments indistinctly marked with white on each side and the surface with a few fino punctures equally distributed, ventral tubercle feebly bisinuate in front. Length 17-18 millim. Hab. Mexico (coll. F. Bates). Two examples. Allied to Z. venosus and levicollis, but shorter and more convex, the arrangement of the tubercles of the elytra is rather different from any of the allied species, the sutural row is distinct only in the basal half, the two rows of large tubercles approach the suture behind, and the inner one almost takes the place of the sutural row; the ventral tubercle (though scarcely to be depended on as a character) is not trilobed in front as in the allied species. 8. Zopherus angulicollis. (Tab. II. fig. 6.) Black, subopaque. Head very sparingly punctured ; thorax with fine widely scattered punctures, moderately convex, rather depressed, with an indistinct central channel, sides trisinuate and widened out a little before the middle into a distinct blunt tooth, midway between which and the base crenulate, narrowed behind, base much narrower than the apex and subtruncate ; elytra oval, convex, much narrowed at base, shoulders rather prominent, base slightly emarginate, with scattercd irregular small conical shining tubercles more distinct at the sides and apex than at the base and an indistinct row of flattened tubercles along the suture, the space between the tubercles dull and opaque, apex bituberculate and with the tubercles very large and flattened. Beneath dull black, ventral segments with scattered fine punctures, the last with a prominent transverse callosity the anterior margin of which slightly produced in the centre; mentum with a deep transverse impression. Length 17 millim. Hab. Mexico, Pinos Altos in Chihuahua (Buchan-Hepburn). One example only. Allied to Z. guttwlatus, Horn. Sect. 2. Elytra 4-tuberculate at the apex. 9. Zopherus nodulosus. Zopherus nodulosus, Sol. Ann. Soc. Ent. Fr. (1841) p. 43°. Zopherus variolosus, Sturm, Cat. 1843, p. 349, t. 5. f.2; Hald. Stansb. Expl. p. 376 (1852). Hab. Mexico’, Jalapa, Orizaba (Sal/é), Juquila, Jalapa (Hoge), Oaxaca (coll. F. Bates). Var. sallei. Zopherus sallei, Deyr. in litt. Proportionately a little shorter and more convex than Z. nodulosus; the elytra more rounded at the sides, the clevations more numerous and crowded, and towards the suture only separated by thin white lines. Length 14-27 millim. Hab, Mexico (coll. F. Bates), Orizaba, Capulalpam, Oaxaca (Sailé). This is the commonest Zopherus in Mexico, and peculiar to that country; it has -ZOPHERUS. 43 been recorded from Texas, but in mistake; Texan specimens are referable to Z. halde- manni, Sallé, as pointed out by Dr. Horn (Rev. Ten. N. A. p. 27). The type of Z. variolosus, Sturm, contained in the Sallé collection, is identical with this species. The var. sall@i is not, I think, really distinct from Z. nodulosus; intermediate forms occur. 10. Zopherus haldemanni. Zopherus haldemanni, Sallé in litt.; Horn, Ten. N. A. p. 271". Hab. Nortn America, Texas}. Var. verrucosus. (Tab. II. fig. 5.) Differs from Z. haldemanni in having the thoracic discal patch larger, not so well defined, and with ramifica- tions extending in the middle nearly to the lateral margins; the clevations of the elytra less regularly arranged, a little larger, and occupying more of the white ground-colour. Hab. Muxtco (coll. F. Bates), Cuernavaca (Sailé). Almost intermediate between Z. nodulosus and haldemannt. 11. Zopherus nervosus. Zopherus nervosus, Sol. Ann. Soc. Ent. Fr. (1841) t. 2. f, 8-15". Zopherus pectoralis, Lec. Ann. Lyc. New York, v. 1851, p. 180, nota. Zopherus mexicanus, Buquet in litt. Hab. Mexico 1, Tepansacualco, Orizaba, Las Peras, Cumbre del Pelado, Totosinapan (Sallé), Oaxaca (coll. F. Bates). Var.? reticulatus, Sallé in litt. Closely allied to Z. nervosus, Sol., but having the spots or tubercles of the elytra less crowded, more distinct one from the other, larger, oblong in form, less numerous, and arranged thus—a sutural row small, a row of about five very large, a row of four about same size, a row of three smaller, and a marginal row of five or six, scattered between these are irregular small black spots, smaller than those of the sutural row ; the white ground-colour occupying a larger space, and the tubercules, which are oblong in form, standing out more clearly ; beneath a little smoother and more shining. Hab. Mexico, Juquila (Salié). A very variable species, though it may be known from its allies in the second section, except the following (compactus, Sallé), by the flanks of the prothorax being covered with distinct rounded tubercles; the whole of the underside (ventral segments excepted), and the flanks of the elytra beneath, is more or less tuberculate; the shoulders are but little prominent; varies very much in size (18-30 millim.), some specimens are shorter and more convex than others. 12. Zopherus compactus. (Tab. II. fig. 4.) Broad, very convex. Head black, dull, with a few scattered fine punctures, and a yellowish-white triangular occipital spot more or less spotted with black ; prothorax very convex, nearly as broad as long, margins GG 2 44. HETEROMERA. strongly crenulate near the base, closely tuberculate above, the tubercles eblaretae sea sta se separated by fine yellowish-white veins or lines, the posterior angles and re e i. oo saree with yellowish white; elytra short and very convex, rounded at the sides, ¢ osely men ius black tubercles arranged thus—a sutural row regular small, a row smaller irregu ar, ne rows very large, a row a little smaller, and a marginal row about same size, between these irregular rows are numerous other small tubercles of the size of those of the sutural row, the spaces between the tubercles filled up with a fine network of yellowish-white colour, shoulders not very prominent, apex quadrituber- culate. Beneath black, margins of thorax, meso- and metasternum, and second and third ventral segments marked with yellowish white, flanks of prothorax and elytra closely and coarsely tuberculate, the rest (ventral segments excepted) more or less rough or tuberculate, ventral callosity deeply emarginate in front. Length 18-27 millim. Hab. Mexico, Parada, Las Peras (Sallé), Oaxaca (coll. F. Bates). Closely allied to, and probably only a form of, the preceding species (Z. nervosus, Sol.); shorter and more convex, the thorax and elytra more closely tuberculate, and the tubercles, though more numerous, more distinct one from another. This species bears the name of compactus, Sallé, in the Sallé collection, the name I have adopted. NOSODERMA. Nosoderma, Solier, Ann. Soc, Ent. Fr. x. p. 31, t. 2. f. 1-3 (1841). Homaloderes, Sol. loc. cit. iti. p. 502, nota. This genus is probably confined to the Neotropical Region, ranging from Mexico to Brazil, and occurring also in the West Indies; it is well represented in Central America, whence three or four species have been described; one species is found in Brazil, one in Colombia, and one in Cuba; a number of additional species (about half of which are known in collections) are described here. Nosoderma, like Zopherus, has its head quarters in Central America, though not occurring north of Mexico, where it is replaced by the closely allied genera Phellopsis, Noserus, and Phiwodes. Allied forms, probably generically distinct, are found in Japan, Siberia, and East Africa; and also (Zopherosis) in New South Wales. ‘These insects are difficult to describe in a satisfactory manner; like certain Aside the depressions of the upper surface are often filled up with earthy matter, thus disguising the sculpture, and good differential external sexual characters are apparently wanting. The different species are found under loose bark in the forests, usually at high elevations, and often in very dark damp places; also upon fungoid growths attached to the bark of old stumps or dead standing trees, upon which they remain apparently immovable, and so much do they assimilate the surface upon which they are resting that it is often very difficult to distinguish them. 1. Nosoderma quale. (Tab. II. fig. 14.) Elongate, depressed, dull black. Head almost smooth; prothorax much longer than broad, widest about the middle, sides rounded and very slightly narrowed at base and in front, base truncate, and as wide as the NOSODERMA. 45 elytra, hind angles almost rectangular, finely and equally granulated, with a distinct shallow central channel from base to apex; elytra subtruncate at base, humeral angles rounded and not prominent, sides almost straight to behind the middle, finely and equally granulated without any appearance of raised lines or tubercles, with four or five indistinct rows of shallow impressions towards the base, apices a little produced, equally rounded, and not separate at the suture. Legs black; antenne pitchy, submoniliform, the apical joint enclosed by the tenth, which is very large and truncate at apex; last joints of palpi red. Length 20 millim. Hab. Mexico, Parada (Saidé). One example. This species has quite a different facies from any of the Vosodermata known to me. 2. Nosoderma asperatum. (Tab. II. fig. 9.) Elongate, rather convex, black, densely clothed with dull brown scales. Head almost impunctate; prothorax coarsely crenulate at the sides, longer than broad, base produced into a broad lohe, between which and the obtuse hind angles strongly emarginate, anterior angles rounded and prominent, the disc with a prominent sinuous ridge on each side, the ridges sharply defined outwardly by a deep excavation, with scattered, shining black granules; elytra with irregular rows of very prominent scattered elevations, which are conical in form towards the apex, and in the form of short ridges towards the base, the margins and spaces between the elevations with scattered rounded tubercles, the margins much interrupted and with the tubercles angular towards the apex, shoulders obliquely truncate, apices divergent, and each with a prominent tubercle. Beneath with scattered granules or elevations. Antenne with intermediate joints submoniliform. Length 12-14 millim. Hab. Muxico (Sallé, coll. F. Bates). Four examples. Allied to V. scabrosum, but shorter in form, a little more convex, the lateral margins of the thorax scarcely sinuous and very coarsely crenulate, the elytral tubercles more conical; the spaces between the larger elevations with scattered, small rounded tubercles. 3. Nosoderma scabrosum. Nosoderma scabrosum, Sol. Ann. Soc. Ent. Fr. x. p. 36° (1841). Nosoderma lacordairei, De Bréme in litt. Hab. Mexico}, Orizaba (Sallé), Jalapa (Hoge), Oaxaca (coll. F. Bates). 4, Nosoderma denticulatum. Nosoderma denticulatum, Sol. Ann. Soc. Ent. Fr. x. p. 33, t. 2. f. 7 (1841)". Hab. Mexico}. I cannot satisfactorily identify this species amongst the very large number of Mexican Nosodermata contained in the Sallé and other collections; it is probable that one of the species here described will prove eventually to be identical with it. 5. Nosoderma venustum. (Tab. II. fig. 7.) Elongate, dull black, the dense scaly clothing above dull brown with darker brown spots or markings. Head with the lateral margins swollen and raised ; prothorax much longer than broad, narrowed towards the 46 HETEROMERA. base, front angles produced and rounded, hind angles obtuse, base a little produced and slightly rounded, the dise with a prominent sinuous ridge on each side, the ridges. sharply defined outwardly by a deep impression extending to the lateral margin, the surface with fine scattered granules; elytra abruptly narrowed and declivous behind, and the apex produced, the base deeply rounded emarginate, the shoulders prominent, with rows of short elevations towards the base, and some large prominent tubercles towards the apex, the elevations arranged thus—a sutural row indistinct, a row starting from near the shoulder continuing to beyond the middle and ending abruptly in a large rounded prominence, a short interrupted row scarcely reaching the base, and a marginal row ending like the second, but beyond it, in a large rounded prominence, beyond the termination of the second row but nearer the suture is another still more prominent but less rounded prominence, the apices somewhat broadly truncate with a large rounded tubercle on each side distant from the suture, between the elevations are irregular rows of depressions, the surface with fine scattered shining black granules. Beneath light brown, with dark spots or markings. and scattered granules. Antenne stout, with intermediate joints slightly transverse. Length 20-24 miilim. Hab. Guatemata, Zapote, Volcan de Atitlan (Champion). Two examples. This is perhaps the finest and most distinct species of all the Central- American Nosodermata. 6. Nosoderma lutosum. (Tab. II. fig. 8.) Elongate, flat and depressed, dull black, densely clothed with brown earthy-looking scales. Head with the lateral margins slightly raised; prothorax flattened, longer than broad, wide in front, narrowed and sinuate at the sides from the middle to the base, front angles very prominent and broadly rounded, hind angles obtuse, the base slightly rounded, with two short ridges at the base, and two similar ridges near the anterior margin, divided by a smooth, shallow, central line or channel, the disc with a strong curved elevation on each side well defined externally by a deep impression, the surface and lateral margins with small, widely scattered, rounded elevations, the margins appearing coarsely crenulate; elytra for more than half their width and for about two thirds of their length flattened and slightly concave, abruptly declivous behind, and the apex produced, with irregular rows of elevations and depressions, a sinuous row of larger elevations starting from the shoulder and ending some distance before the apex ina rough prominent tubercle, and a marginal row similar, but ending before it, the apices broadly truncate, and each with two rounded tubercles—one near the suture and the other on the margin. Beneath brown with paler markings and some scattered shallow impressions ; ventral segments broadly flattened.and slightly concave down the middle. Antennz with intermediate joints almost transverse. Length 16-19 millim. Hab. Mexico (coll. F. Bates), Orizaba (Sallé), Jalapa (Hoge). 7. Nosoderma zunilense. (Tab. II. fig. 10.) Elongate, depressed, dull black, densely clothed with dark brown scales. Head with lateral margins raised and prominent; prothorax much longer than broad, broad in front, narrowed from about the middle to the base, the sides bisinuate, base broadly but feebly rounded, rather flattened, the disc longitudinall convex and with a not very prominent sinuons ridge (sharply defined externally by a deep icopression} Bs each side near the middle, the surface with fine scattered granules; elytra flattened for about two thirds of their width to some distance beyond the middle, then abruptly declivous to the apex, with rows of long deep impressions, and two interrupted raised lines or elevations—the first represented d 7 a short pountled elevation at the base and becoming obsolete beyond the middle, the second not side the base and terminating some distance before the apex in a very prominent rounded elevation a little beyond the elevation terminating the second row, but on the lateral margin, is another large sisientitnn subtcancel r elevation, shoulders obliquely truncate, apices a little produced and separately ounded the surf. a ith small scattered granules a little more prominent than on the thorax. Beneath dull black peal? 3 NOSODERMA. 47 clothed with dark brown scales, and with scattered rather coarse granules; the ventral segments more finely and sparingly granulate. Antenne with intermediate joints submoniliform. Length 18-22 millim. Hab. Guatemaua, El Tumbador, Cerro Zunil (Champion). Four examples. 8. Nosoderma guatemalense. (Tab. II. fig. 11.) Moderately elongate, depressed, dull black, clothed with dark brown scales, the surface, except the head, with scattered shining granules. Head with the lateral margins a little raised and rounded; prothorax a little longer than broad, widest about the middle, a little narrowed in front and behind, anterior angles not very prominent and broadly rounded, hind angles obtuse, base subtruncate, depressed towards the sides, the disc longitudinally convex, in some examples with a sinuous transverse elevation on each side starting from about the middle and extending to the lateral margins, and often well defined behind by a large, deep, triangular impression ; clytra flattened for about two thirds of their width to some distance beyond the middle, with a series of ridges ending in more or less prominent rounded elevations towards the apex, the ridges arranged thus—one sutural extending to the apex, one indistinct prominent only at the base, one more distinct than the others starting from near the shoulder and ending abruptly in a rounded elevation, one short not reaching the base, and one marginal, much interrupted, starting from the shoulder and ending a little beyond the termination of the third in a rounded elevation, between these ridges are rows of long deep impressions, the apices a little produced, almust equally rounded, and slightly divergent at the suture, shoulders feebly truncated and almost rounded. Beneath sparingly clothed with dark brown scales, somewhat closely and coarsely granulate. Antenne with intermediate joints submoniliform. Length 16-17 millim. Hab. British Honpvras, Rio Sarstoon (Blancaneaux); GuaTemaa (Sallé), Totoni- capam, Purula, Chilasco, Calderas, Volcan de Fuego 6500 feet, San Gerénimo, Duefias (Champion). This species is not uncommon in Guatemala under loose bark of fallen timber in the forests at elevations of from 4000 to 10,000 feet ; it is allied to Y. zunzlense, but shorter, the thorax shorter and narrower in front, the apices of the elytra almost equally rounded and very slightly produced, and the tubercles not nearly so prominent, &c. WV. zunilense and guatemalense have a different facies from the other Central-American species; they are flatter and squarer in form, and have four prominent tubercles only on the elytra towards the apex—one on each side on the margin, and the other a little above nearer the suture; the rows of impressions on the elytra are deeper, and the marginal elevation before the apex prominent; the disc of the thorax is longitudinally convex in both species. 9. Nosoderma interruptum. Moderately elongate, rather depressed, dull black, densely clothed with dark brown earthy-looking scales. Head almost smooth; prothorax longer than broad, almost as broad behind as in the middle, a little sinuous before the prominent hind angles, base a little produced and subtruncate, the disc with a promi- nent, interrupted sinuous elevation on each side, the surface with widely scattered coarse granules; elytra with rows of shallow impressions and sinuous or curved ridges or elevations, the elevations arranged thus—an irregular and interrupted row formed of three short ridges (one starting from the base and curving inwards, followed by another curving outwards, and another shorter and stouter also curving 48 HETEROMERA. outwards), a little beyond the termination of this row, but nearer the suture, is a rounded prominent elevation, and a short interrupted marginal ridge distinct only near the base, in addition to these there are towards the sides and apex a few other indistinct or less prominent elevations, the margins from the middle to the apex somewhat coarsely but widely denticulate, apices a little produced and swollen, divergent at the suture, and separately rounded. Antenne with intermediate joints broader than long. Length 18-19 millim. Hab. Mexico, Las Vigas (Hége). Allied to NV. morbillosum, Sol. 10. Nosoderma insigne. (Tab. II. fig. 13.) Moderately elongate, depressed, dull black, densely clothed with brown scales. Head impunctate ; prothorax a little longer than broad, slightly narrowed in front and behind, feebly sinuate at the sides before the prominent obtuse hind angles, the base a little produced and subtruncate, the disc with a not very promi- nent sinuous ridge on each side, with a central smooth line slightly impressed at the base, the surface with scattered shining granules which are coarser and more numerous near the anterior margin, the space between the ridges smoother and less closely but more coarsely granulate ; elytra rather smooth, with some irregular shallow impressions, and a row of short prominent elevations starting from near the shoulder and ending before the apex, and consisting of—a ridge curving inwards starting from the base, another shorter curving outwards, another similar curving inwards, and lastly a small rounded elevation, with a short marginal elevation at the base, and the surface with scattered very fine granules, the base broadly but feebly emar- ginate, the shoulders rounded, the apices almost rounded and scarcely divergent at the suture. Length 17 millim. Hab. Mexico, Capulalpam (Sal/é). Two examples. This is allied to NV. interruptum, and with the elevations of the elytra arranged in the same manner, but is much smoother, the elytral depressions shallower, the elevations shorter and less connected, and the apices almost equally rounded. 11. Nosoderma morbillosum. Nosoderma morbillosum, Sol. Ann. Soc. Ent. Fr. x. (1841) p. 877. Nosoderma inequale, De}. in litt. Nosoderma regale, Klug in litt. Nosoderma vicinum, Sol. loc. cit. p. 887. Hab. Mexico (Lruqui, coll. F. Bates), Jacale, Las Vigas, Parada, Yolotepec, Orizaba (Sallé), Jalapa, Mexico city, Las Vigas (Hége), Ciudad in Durango 8100 feet (forrer) ; tGuatemata (Sallé). This is a common species in Mexico, where Hoge found it in great plenty; one specimen only in the Sallé collection is labelled Guatemala, perhaps erroneously. ‘The N. vicinum, Sol., is a small and narrow form of this species. 12. Nosoderma carinatum. Moderately elongate, rather depressed, dull black, clothed with dark brown scales. Head rather smooth; prothorax longer than broad, narrowed in front and behind, sides slightly sinuate before the base, hind angles prominent and obtuse, the disc with a sinuous prominent elevation on each side, the surface with NOSODERMA. 49 coarse, shining, black granules, crowded on the elevations and at the sides and in front, the space between the elevations usually clearer, with a central smooth line distinct at the base, the base slightly produced, subtruncate; elytra with prominent raised lines and elevations, and rows of shallow impressions, the raised lines arranged thus—a line distinct only towards the apex, starting from the base and ending abruptly beyond the middle in a long, rounded elevation, a line slightly sinuous, prominent, and uninter- rupted throughout, starting from the base and ending short of the first, a short line obsolete in front and — not reaching the base, and a short marginal line starting from the shoulder and not reaching the middle, some distance beyond the termination of the second line, but nearer the first, is an isolated rounded elevation, sometimes with one or two other smaller elevations a little before the apex, base broadly emarginate, shoulders rounded, the margins closely crenulate, apices rounded, and very slightly divergent at the suture, the surface with coarse scattered granules. Antenne with intermediate joints longer than broad and submoniliform. Beneath closely and coarsely granulate, fifth ventral segment smoother. Length 15-20 millim. Hab. Mexico (coll. F. Bates), Orizaba, Jacale (Sallé), Las Vigas, Jalapa (Hoge). This species is labelled WV. papulosum, Chev., in the Sallé collection, and is rather common in Mexico. Hoge found it in numbers at Jalapa. Allied to NW. exsculptum, but with the rows of elevations on the elytra more prominent and less interrupted, the thorax comparatively a little broader behind, and the hind angles more prominent and less obtuse. 13. Nosoderma exsculptum. Elongate, rather narrow and depressed, dull black, clothed with dark brown scales. Head rather smooth; prothorax much longer than broad, narrowed and sinuate behind, hind angles obtuse, and almost rounded, base a little produced and subtruncate, with a more or less distinct, smooth, central line or channel from base to apex, and the disc with a sinuous (sometimes not very prominent) elevation on each side, the elevations well defined externally by a deep impression, and internally by a smooth sinuous space, the surface with scattered, rather coarse, smooth, black granules, the granules crowded along each side of the central line and on the elevations; elytra with interrupted raised lines or ridges, and some rounded elevations towards the apex, and the intervals with irregular rows of shallow impressions, the elevations arranged thus—an indistinct ridge (more or less interrupted or obsolete towards the base) starting from the base and ending some distance before the apex in a rounded elevation, a ridge (much interrupted behind, but distinct towards the base) starting from near the shoulder and ending before the first in a similar rounded elevation, a short interrupted ridge not reaching the base and ending in a line with the first, and a marginal ridge indistinct, a little beyond the termination of the ridges and in a line with them are one or two rounded elevations, the surface with scattered granules arranged in rows on the elevations, less numerous and irregularly placed in the depressions, the margins towards the apex somewhat coarsely denticulate, the base feebly emarginate, shoulders rounded, slightly impressed transversely before the middle, the apices slightly divergent at suture and separately rounded. Antenne with intermediate joints submoniliform. Length 12-21 millim. Hab. Mexico (coll. F. Bates), Jalapa (Hoge), San Antonio de Arriba, Jacale, Durasnal (Sallé). This is the commonest species of Nosoderma in Mexico. Hoge captured it in great abundance at Jalapa. Some very small examples (12 millim. in length) from Durasnal, San Antonio, and Jalapa have the elevations of the elytra more interrupted and prominent, especially towards the apex. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, August 1884. HH 50 HETEROMERA. 14. Nosoderma anceps. Closely allied to WV. exsculptum, but comparatively shorter and broader; the thorax shorter, less narrowed towards the base, and the elevations stronger; the margins of the elytra more closely denticulate. Length 15-22 millim. Hab. Mexico, Jalapa, Mexico city (Hoge). Probably not distinct from WV. exsculptum, and taken by Hoge at the same locality. 15. Nosoderma impressum. Allied to WV. ewsculptum, but broader; the thorax wider in front, more narrowed and sinuous behind, the elevations stronger, the hind angles a little more prominent, the granules coarser, more scattered, and less regularly arranged; the elytra strongly and broadly impressed on each side before the middle, the elevations more interrupted and irregular, those towards the apex stouter and stronger, those towards the base curving inwardly and interrupted by the impressions, the shoulders are slightly truncated obliquely, the apices a little divergent at the suture and separately rounded, the margins towards the apex some- what coarsely denticulate, the granules a little coarser and more scattered. Antenne with the intermediate joints longer than the rest and obconic. Length 17-20 millim. Hab. Mexico (coll. F. Bates), Jacale (Sallé). Five examples. Sometimes labelled WV. denticulatum, Sol.,in collections; it does not agree, however, with the description or figure of that species; it is perhaps a form of N. exsculptum. 16. Nosoderma sparsum. (Tab. II. fig. 12.) Elongate, narrow and rather depressed, dull black, sparsely clothed with dark brown scales, the surface (except the head) with scattered, shining, rather coarse granules. Head smooth; prothorax much longer than broad, a little narrowed towards the base, the anterior angles broadly rounded and produced, hind angles slightly prominent and obtuse, base a little produced and subtruncate, the disc with a long sinuous ridge on each side, between which and the lateral margins there is a large shallow impression, the granules on the disc larger, coarser, and more scattered than on the ridges and at the sides, with a smooth central line distinct from the middle to the base, obsolete in front; elytra broadly flattened, the suture raised and with interrupted ridges, only one of which is at all distinct, this starting from the middle of the hase ends some distance before the apex in a rounded but not very prominent elevation, the margins a little raised and with a short rounded elevation a little beyond the termination of the dorsal ridge, between the eleva- tions are irregular rows of smooth, shallow impressions, the elevations with fine shining granules closer and more crowded along the suture than towards the sides, shoulders rounded and not prominent, base broadly and feebly emarginate, apices not divergent at the suture, but equally rounded. Antenne with the ninth joint much broader than the eighth, last joints very broad and rounded at the apex. The thorax beneath coarsely, the meso- and metasternum and ventral segments more finely and closely, granulate; fifth ventral segment smooth, and with a few fine raised points towards the hind margin, Length 16-19 millim. 80 of Hab. Guatemaua, Desconsuelo, Pachoc, Totonicapam (Champion). This species is pretty common under loose bark of fallen pines at elevations of from 00 to 11,000 feet. Proportionately longer and narrower than any of the allied species, and the elevations the elytra less prominent. ARZOSCHIZUS.—DACODERUS. 51 Group STENOSIDES. A few genera of this group are found in Chili, and one in North America; the remainder in the Old World, many species occurring in the south of Europe. ARZZOSCHIZUS. Areoschizus, Leconte, Ann. Lyc. New York, v. p. 188; Horn, Revis. Ten. N. A. Trans. Am. Phil. Soc. xiv. p. 274; Lec. & Horn, Class. Col. N. A. p. 866 (1883). This genus, recorded from California and New Mexico, has lately been received from the north of Mexico just within our boundary; the four recorded species are stated to occur beneath stones in hot, dry, desert regions. 1. Arzoschizus costipennis. Areoschizus costipennis, Lec. Ann. Lyc. New York, v. p. 188*; Horn, Revis. Ten. N. A. Trans. Am. Phil. Soe. xiv. p. 274°. Hab. Nort America! ?.—Mexico, Northern Sonora (Morrison). Group DACODERIDES. This group consists of a genus peculiar to the Southern United States and to the West Indies. DACODERUS. Dacoderus, Leconte, Proc. Acad. Phil. 1858, p. 74; Class. Col. N. A. 1862, p. 216; Horn, Revis. Ten. N. A. p. 275 (1870); Lec. & Horn, Class. Col. N. A. p. 365 (1883). Two species only are known of this genus—one found in North America, from California to the Gila river, and just within our limits; the other in the island of Santo Domingo. These insects greatly resemble Rhyssodes; they are stated to occur beneath stones, or under bark, in very dry places, and to feign death very persistently. 1. Dacoderus striaticeps. Dacoderus striaticeps, Lec. Proc. Acad. Phil. 1858, p. 74°; Thoms. Arcana, i. t. 12. f.6; Horn, Revis. Ten. N. A. p. 2767; Lec. & Horn, Class. Col. N. A. p. 365°. Hab. Nortu America, Fort Yuma}, Vallecito in California to Fort Grant in Arizona?, junction of the Colorado and Gila rivers a, This species is found just on our northern boundary. Subfam. ASIDIN. This subfamily, as understood here, will include those species placed in it by Horn and Leconte, Nyctelia and allies so numerous in South America, and others. Nearly HH 2 52 HETEROMERA. all the species have the intermediate coxal cavities open externally, and the trochantin visible and usually very prominent; in Astrotus, however, the cavities are almost closed, and the trochantin scarcely visible; the third and fourth ventral segments without a coriaceous hind margin. Exceedingly few species of Asidinee are found in our country south of Mexico. Group ASIDIDES, The species of this group are numerous in Mexico and the Southern States of North America; none have yet been received from south of Mexico. Two or three new genera described here are perhaps best placed in this group. ASIDA. Asida, Latreille, Hist. nat. Crust. et Ins. x. p. 269 (1804) ; Lac. Gen. Col. v. p. 160 (1859) ; All. Abeille, vi. p. 159 (1869); Horn, Revis. Ten. N. A. p. 286 (1870) ; Lec. & Horn, Class. Col. N. A. p. 370 (1883). Stenomorpha, Sol. Ann. Soc. Ent. Fr. v. p. 487, t. 12. f. 9-14 (1836). Pelecyphorus, Sol. loc. cit. p. 467; Lac. Gen. Col. v. p. 159; Lec. Class. Col. N. A. part 1, p. 221 (1862). Euschides, Lec. Ann. Lyc. New York, v. p. 127 (1852); Journ. Ac. Phil. iv. p. 19 (1858); Lac. Gen. Col. v. p. 162 (1859). Philolithus, Lac. Gen. Col. v. p. 157 (1859). I have not retained Pelecyphorus, Philolithus, or Euschides as distinct from Asida; it appears impossible to separate them satisfactorily. The New-World Astd@ are probably confined to the southern parts of North America and to Mexico. The North-American forms are mostly well known, but of the Mexican species few have been described till now, though existing in many collections. The species are numerous in Mexico, though none have yet been received from south of that country; it is possible one or two may occur in Guatemala. The Asida tropica, Kirsch, from Bogota, judging from the description, appears to have little to do with Asida, the length given is 43 millim.; the locality, Chili, given by Solier for A. asidoides is probably in error for Mexico. Some species of Asida, as A. marginata, lirata, polita, convera, convexicollis, &c., found in Arizona and the country adjacent to our northern limit, may yet occur in Northern Mexico. Certain of the Huschides group have a very different facies from Asida, several super- ficially resembling Eleodes, but species occur intermediate which might be placed in either. Huschides is well represented in Mexico, and the species numbered 24-35 belong to it; one or two species (A. villosa and subpilosa) are covered with long, erect or decumbent, hairs. The different species are found beneath stones in dry arid districts. ASIDA. 53 1. Asida mexicana. Pelecyphorus mexicanus, Sol. Ann. Soc. Ent. Fr. 1836, p. 469, t. 11. f. 11-16"; Dupont, Dej. Cat. ord ed. p. 207. Pelecyphorus pistrinarius, Chev. Dej. Cat. 3rd ed. p. 207. Hab. Mexico! (coll. F. Bates), Tehuacan (Sailé, Hoge). Apparently a common species, and sent by Hoge in large numbers. 2. Asida rugosissima. (Tab. III. fig. 1.) Broad, convex, black, the depressions of the surface usually filled with earthy matter. Head dull, finely but not very closely punctured; prothorax very coarsely and closely punctured, rugulose, strongly transverse, rounded at the sides, a little broader behind than in front, base bisinuate, hind angles broad and promi- nent and a little produced behind; elytra short, dilated, strongly rounded at the sides, widest about the middle, narrowed suddenly and emarginate at the shoulders just before the base, the sharply toothed humeral angles hidden beneath the thorax, with two very prominent transversely wrinkled dorsal ridges confluent behind before the apex, a sharp marginal ridge and a row of flattened transverse elevations along the suture, the intervals very coarsely and transversely wrinkled; antenne with intermediate joints scarcely longer than broad; the outer apical angle of the anterior tibiz with a short, blunt tooth. Beneath dull, closely and finely punctured. Length 15-20 millim. Hab. Mexico, Hacienda de San Miguelito, Saltillo in Coahuila (Dr. Palmer). Four examples. Allied to Asida sordida, Lec., from New Mexico, but broader and shorter, the elytra more coarsely wrinkled, &c. 3. Asida interrupta. Broad, convex, a little flattened above, black, the depressions usually filled with earthy matter. Prothorax rugulose, transverse, sides rounded, a little wider at the base than at the apex, hind angles acute and pro- duced behind, base bisinuate ; elytra short, rounded at the sides, widening a little from the base to about the middle, emarginate at the shoulders, humeral angles acutely toothed and hidden beneath the base of the thorax, with two transversely wrinkled dorsal ridges confluent before the apex, a sharp marginal ridge, and the suture a little raised and wrinkled, the intervals strongly wrinkled transversely; anterior tibiz with the outer apical angle produced into a blunt tooth. Beneath finely but not very closely punctured. Length 17 millim. Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). One example. Allied to A. rugosissima, but smoother and flatter, the elytra less narrowed towards the base, the hind angles of the thorax produced and more acute, &c.: shorter and flatter than A. sordida and its varieties. “3 4, Asida funesta. Oblong oval, convex, a little depressed above, black, slightly shining. Head transversely impressed in front; prothorax coarsely and closely punctured, rugulose, transversely rugulose along the lateral margins, rounded at the sides, narrowed in front, the anterior angles produced, narrowed and sinuate behind, the hind angles produced and prominent, though not acute, and slightly overlapping the elytra, base bisinuate ; elytra somewhat dilated, widened from the base to beyond the middle, rather suddenly narrowed behind, and the apex a little produced, humeral angles rounded, with a very prominent dorsal ridge starting from 54 HETEROMERA. the base and obsolete before the apex, and a sharply defined marginal ridge, midway between the marginal and dorsal ridges there is [in some specimens] another ridge not reaching the base, the suture is indistinctly raised and slightly punctured, the ridges are connected by raised, prominent, transverse, sinuous wrinkles, the wrinkles finer and more numerous along the margin; outer apical angle of anterior tibiz with a sharp tooth. Beneath with scattered, coarse punctures and short longitudinal wrinkles; epipleurse with coarse, scattered punctures, vertical. Length 15-19 millim. Hab. Mexico (coll. F. Bates), Puebla (Sadié). Six examples. 5. Asida clathrata. (Tab. III. fig. 2.) Pelecyphorus clathratus, Sallé in litt. Oblong oval, convex, depressed above, black with an wneous tinge, rather shining. Head transversely impressed in front; prothorax coarsely rugulose, the disc with a more or less smooth sinuous ridge on each side, and two rounded impressions near the centre, the ridges defined externally by an impression not reaching the base, rounded at the sides, a little broader than long, narrowed and sinuate behind, hind angles produced and prominent, though not acute, and overlapping the base of the elytra, narrowed in front with the angles produced and prominent, base bisinuate; elytra flattened, dilated, widened from the base to beyond the middle, with two flattened interrupted dorsal ridges, obsolete before the apex, and the outer of which often indistinct and not reaching the base, a marginal ridge sharply defined and slightly reflexed, the suture a little raised, flattened, and finely transversely strigose, the marginal and dorsal ridges and the suture are connected by transverse wrinkles, leaving each interstice with a series of oblong impressions, the whole surface with fine scattered punctures, humeral angles rounded; epipleure vertical, with scattered punctures ; a sharp spine at outer apical angle of the anterior tibia. Beneath with widely scattered fine punctures. Length 14-17 millim. (2 9.) Hab. Mexico (coll. F. Bates), Oaxaca (Hoge), Tehuacan, Cuernavaca (Sallé). This fine species is not. very closely allied to any other known to me. 6. Asida morbillosa. Pelecyphorus morbillosus, Lec. Proc. Acad. Phil. ix. p. 74 (1858) *. Philolithus morbillosus, Lac. Gen. Col. v. p. 725. Asida morbillosa, Horn, Revis. Ten. N. A. p. 2847. Hab. Nortu America, Lower California ?.—Mextico, Sonora (Morrison). 7. Asida asidoides. Pelecyphorus asidoides, Sol. Ann. Ent. Soc. Fr. 1836, p. 471, t. 11. f. 177. Asida asidoides, Lac. Gen. Col. v. p. 161, nota. Hab. Mexico (ex coll. Sturm).—? Cutt 1. Three examples. This species is labelled Asida asidoides in the Sallé collection, and agrees fairly well with Solier’s description. The locality given, Chili, is probably a mistake. ASIDA. 55 8. Asida forreri. (Tab. III. fig. 3.) Broad, depressed, dull black, with scattered: brown scaly hairs. Prothorax transverse, rugulose, closely and rather coarsely punctured, with a few, small, indistinct, smooth elevations, lateral margins thin and expanded, wider behind than in front, rounded at the sides, narrowed and sinuate behind before the outwardly directed subacute hind angles, narrowed and very feebly sinuate in front, the anterior angles produced and prominent, base bisinuate; elytra broad, flattened, broader than the thorax at the base, a little widened to about the middle, somewhat abruptly narrowed behind, and the apex a little produced, shoulders raised and the angles obtuse, with an acute distinct marginal ridge obsolete before the apex, and three irregular rows of large shallow impressions, the impressions separated one from another by transverse wrinkles and some indistinct longitudinal elevations; outer apical angle of anterior tibise with a sharp tooth, femora and tibie coarsely punctured. Beneath smooth, with a few exceedingly fine punctures or scratches. Length 13 millim. Hab. Mexico, Ventanas (Forrer). One example. Allied to the North-American Asida opaca and A. mancipata, Horn’ 9. Asida foveolata. Pelecyphorus foveolatus, Sol. Ann. Soc. Ent. Fr. 1836, p. 472°. Pelecyphorus porcatus, De}. in litt. Hab. Mexico! (coll. F. Bates), Capulalpam, Yolos, Peras (Sallé), Jalapa, Oaxaca (Hoge). 10. Asida tristis. Broad, short, slightly depressed, black, scarcely shining. Prothorax transverse, very coarsely and closely punctured, rugulose, rounded at the sides, a little narrowed and sinuate behind before the not very prominent hind angles, base bisinuate, with an indistinct (sometimes obsolete) smooth central line; elytra short, dilated, rounded at the sides, widest about the middle, a little broader at the base than the thorax, humeral angles rounded, with three fine dorsal ridges (the outer not reaching the base) obsolete behind, the suture a little raised, and a sharp well-defined marginal ridge, the interstices finely and irregularly wrinkled transversely and with scattered fine punctures; outer apical angle of anterior tibie with a short tooth; legs short, femora and tibie coarsely rugulose. Beneath with scattered rather coarse punctures, the ventral segments smoother with scattered punctures and indistinct longitudinal scratches. Length 12-14 millim. Hab. Mexico (coll. F. Bates), San Antonio de Arriba (Sad/é), Las Vigas (Sallé, Hoge). Labelled Asida (Pelecyphorus) tristis in the Sallé collection, the name I have adopted. Sent in some numbers by Hoge. 11. Asida suturalis. (Tab. III. fig. 4.) Oblong oval, rather convex, black, sometimes with an seneous tinge, with scattered light-brown scale-like hairs, slightly shining. Head slightly impressed in front; prothorax coarsely and closely punctured, rugulose, scarcely broader than long, slightly rounded at the sides, narrowed and feebly sinuate before the base, the hind angles straight much produced and overlapping the elytra, a little narrowed towards tho front, the anterior angles prominent, with a smooth raised central line and two or three indistinct smooth irregular elevations on each side, base bisinuate ; elytra slightly rounded at the sides, widest about the middle, but little narrowed towards the base, the base broader than the thorax, humeral angles raised and almost rounded, with two (rarely three) indistinct interrupted flattened dorsal ridges (often obsolete) and a sharp marginal ridge almost reaching the apex, the interstices with scattered shallow feeble longi- 56 HETEROMERA. tudinal impressions towards the suture and fine transverse wrinkles towards the margins, the entire surface sometimes with a few scattered indistinct punctures, the suture 1s depressed and flattened through- out its entire length; outer apical angle of the anterior tibie with a short blunt tooth. Beneath shining, with fine widely scattered punctures, the punctures a little coarser and closer along the sides and on the last ventral segments. Length 13-15 millim. (¢ 9.) Hab. Mexico (coll. F. Bates, Sallé), Oaxaca, Almolonga (Hége). Nine examples. 12. Asida longipennis. (Tab. III. fig. 5, ¢ -) Elongate, rather convex, black, sparsely clothed with brown scales, Head impressed in front, and with an indistinct impression between the eyes; prothorax scarcely broader than long, closely and coarsely punc- tured, rugulose, rounded at the sides, the lateral margins slightly reflexed, slightly narrowed and sinuate behind before the rectangular hind angles, narrowed in front, the anterior angles prominent and slightly pointed, with a smooth central line, the disc with two rounded impressions on each side—one near the middle and another a little behind and nearer the lateral margin, base feebly bisinuate almost truncate ; elytra long, somewhat parallel, a little widened from the base to beyond the middle, narrowed rather suddenly behind with the apex a little produced, a little wider at the base than the thorax, with three well-defined smooth dorsal ridges (the outer short, not reaching the base) confluent behind the middle, a marginal ridge nearly reaching the apex and connected behind by a spur from the first dorsal ridge, the suture raised for its entire length, the interstices with scattered punctures ; antenne thin, intermediate joints long and obovate; outer apical angle of the anterior tibia with a long sharp spine, femora and tibie coarsely punctured. Beneath densely but not coarsely punctured. Length 13-15 millim. (¢ @.) Hab. Mexico, San Antonio de Arriba, San Andres (Salé). Two examples. Labelled Pelecyphorus longipennis, Chev., in the Sallé collection. 13. Asida induta. (Tab. III. fig. 6.) Oblong oval, dull black, clothed with ferruginous scale-like hairs. Head with a rounded impression between the eyes, transversely impressed in front, finely and somewhat closely punctured ; prothorax transverse, rounded at the sides, closely and rather finely punctured, margins a little raised and expanded, narrowed and sinuate behind, the hind angles almost rectangular and not produced, narrowed and feebly sinuate in front, the anterior angles produced and pointed, the base almost truncate; elytra rounded at the sides, the humeral angles rounded, a little broader at the base than the thorax, widest about the middle, with three not very prominent dorsal ridges—the first distinct only at the base, obsolete behind, the second confluent before the apex with a marginal ridge and enclosing the shorter third dorsal ridge, interstices with a few scattered shallow punctures, the entire surface densely clothed with scales; outer apical angle of anterior tibia with a sharp tooth; femora and tibis coarsely punctured. Beneath coarsely and densely punctured. Length 12 millim. Hab. Mexico (coll. F. Bates). One example. I know of no near ally to this species. 14. Asida guanajuatensis. Oblong oval, rather convex, somewhat densely clothed with light brown or ferruginous scale-like hairs. Pro- thorax a little broader than long, closely and coarsely punctured, rugulose, the disc with two rounded ASIDA. 57 impressions on each side towards the base and an indistinct central groove, rounded at the sides, narrowed and sinuate towards the base, the hind angles produced and overlapping the elytra, narrowed in front and the anterior angles somewhat prominent, base bisinuate; elytra broader than the thorax at the base, rather short and dilated, widest behind the middle, rounded at the sides, humeral angles obtuse, with a network of raised lines which enclose a series of three or four interrupted rows of shallow depressions, the depressions usually filled with the scale-like hairs; antennze short, stout ; outer apical angle of the anterior tibize with a sharp tooth. Beneath slightly shining, coarsely but not very closely punctured. Length 12-15 millim. Hab. Mexico (coll. F. Bates), Guanajuato (Sallé). Six examples. Labelled Ologlyptus guanajuatensis, Dugés, in the Sallé collection. 15. Asida scutellaris. (Tab. III. fig. 9, 3.) Oblong oval, rather convex, black, somewhat densely clothed with ferruginous or brown scales. Head trans- versely impressed in front, finely punctured; prothorax broader than long, closely and rather coarsely punctured, rugulose, with a distinct smooth central raised line, and an indistinct oblique impression on each side towards the base, rounded at the sides, narrowed and sinuate behind, hind angles very promi- nent, produced and overlapping the elytra, narrowed in front, the anterior angles a little prominent and rounded, base slightly produced in the middle and almost rounded ; elytra broader than the thorax at the base, sides rounded, short and dilated about the middle (?) or longer and slightly widened (3), with three prominent rounded smooth shining ridges—the first two confluent behind, and the third not reaching the base, and a sharp marginal ridge confluent just before the apex with the united first and second, the suture raised and prominent, the intervals with matted light brown appressed scaly hairs and in the centre of each a more or less distinct line dividing the scales into two rows; anterior tibiee toothed at outer apical angle; prosternum prominent behind, scarcely declivous; scutellum with a smooth central keel. Beneath sparingly but rather coarsely punctured. Length 14-18 millim. (¢ @.) Hab. Mexico (coll. F. Bates), Puebla (Sallé), Almolonga, Jalapa, Oaxaca (Hége). 16. Asida fallax. (Tab. III. fig. 8.) Oblong oval, rather convex, black, sparingly clothed with brown scaly hairs. Head transversely impressed in front; prothorax broader than long, closely and rather coarsely punctured, rugulose, with a smooth central raised line, rounded at the sides, narrowed in front and behind, slightly sinuate before the base, _ the base almost rounded in the middle, hind angles produced and overlapping the elytra; elytra broader than the thorax at the base, rounded at the sides, widest about the middle, humeral angles obtuse and raised, with three fine ridges—the first two confluent behind, the third not reaching the base, and a marginal ridge confluent just before the apex with the united first and second, the suture raised and pro- minent, the second, third, and marginal ridges sometimes connected by one or two transverse raised lines, the interstices with matted dark-brown scaly hairs and in the centre of each indications of a darker central band; anterior tibiee with a sharp spur at the outer apical angle; scutellum with a central keel. Beneath with coarse or fine scattered punctures, prosternum a little prominent raised and rounded behind. Length 15 millim. (¢ 2.) Hab. Mexico, Guanajuato, Toluca (Sallé), Mexico city (Dr. Palmer). Five examples. Closely allied to A. scutellaris, but with the ridges of the elytra much finer and less prominent &c. Labelled Asida fallax, Chev., in the Sallé collection. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, October 1884. II 58 HETEROMERA. 17. Asida laticollis. (Tab. III. fig. 7.) : Oblong oval, rather convex, dull black, densely clothed with brown scaly hairs. Head transversely me ie in front; prothorax finely and very densely punctured, rugulose, with a smooth indistinct centra raised line, broad, transverse, rounded at the sides, very feebly sinuate and scarcely narrowed behind, hind angles produced, prominent, straight, and overlapping the elytra, narrowed in front, the anterior angles prominent and obtuse, base feebly bisinuate and subtruncate in middle; elytra as wide as or a little wider than the thorax at the base, rounded at the sides, broadest about the middle, humeral angles obtuse, with three fine ridges—the first two confluent behind, the third not reaching the base, and a marginal ridge confluent just before the apex with the united first and second, the suture raised and prominent, the two outer dorsal and the marginal ridges sometimes connected by one or two transverse raised lines, the interstices with matted dark-brown scaly hairs and in the centre of each a darker line dividing the lighter scales into two rows; anterior tibie with a sharp tooth at outer apical angle ; scutellum with a central keel. Beneath finely and closely punctured ; prosternum produced behind and rounded, subhorizontal. Length 17-18 millim. Hab. Mexico (coll. F. Bates), Guanajuato (Salle). Four examples. Closely allied to A. fallax, from which it differs in being larger, broader, and longer, the thorax broader and more strongly transverse, more finely and closely punctured, with the hind angles straighter and more produced, and the base straighter; the head smoother, the antenne a little shorter, &c. 18. Asida favosa. Oblong oval, rather convex, dull black, clothed with dark-brown scaly hairs. Head broad, transversely impressed in front, finely and sparingly punctured ; prothorax finely and very densely punctured, rugulose, with a smooth shining central raised line, transverse, narrowed and feebly sinuate behind, hind angles produced, prominent, and overlapping the elytra, narrowed in front with the angles prominent but not acute, base bisinuate and the central lobe a little produced and subtruncate; elytra broader than the thorax at the base, sides rounded, somewhat dilated from the base to a little beyond the middle, humeral angles a little raised and obtuse, with three smooth fine interrupted ridges (the outer not reaching the base) and a sharp marginal ridge, these ridges unite before the apex and are more or less connected by a few raised transverse lines, the suture raised and smooth, the interstices densely clothed with dark brown scales; anterior tibie truncated at apex, bluntly toothed at outer apical angle; scutellum with a central keel; antenn rather stout, intermediate joints scarcely longer than broad. Beneath slightly shining, ventral segments sparingly and finely punctured; prosternum prominent behind, rounded at apex, subhorizontal. Length 17 millim. ( @.) Hab. Mexico, Guanajuato (Sal/é). One example. Closely resembling A. /aticollis and A. fallax, and perhaps a variety of the latter. 19. Asida similata. Oblong ovate, rather convex, dull black, clothed with dark-brown scales. Head transversely impressed in front; prothorax rugulose, somewhat coarsely, closely, and irregularly punctured, with a smooth central raised line, lateral margins rather strongly rounded, a little swollen and reflexed, and sinuate and narrowed behind, hind angles produced, outwardly directed, and overlapping the elytra, narrowed and rounded towards the front, the anterior angles prominent and rounded, base bisinuate, the central lobe subtruncate; elytra a little broader than the thorax at the base, strongly rounded at the sides, widest about the middle, humeral angles obtuse and hidden by the hind angles of the thorax, with three fine ridges (the outer not ASIDA. 59 reaching the base), the suture raised and smooth, and a marginal ridge, the dorsal and marginal ridges confluent behind and the two outer and the marginal connected by one or two raised transverse lines, the interstices with densely matted dark-brown scaly hairs; anterior tibiz with outer apical angle sharply toothed; scutellum with a central keel; antenne short and stout. Beneath slightly shining, ventral segments sparingly and finely punctured ; prosternum prominent behind, rounded at apex. Length 18 millim. (?.) | Hab. Mexico (coll. F. Bates). One example. Closely allied to A. favosa, &c., but with the margins of the thorax swollen and slightly reflexed, more strongly sinuate before the base, and the hind angles outwardly directed. Of the five closely allied species here described it is not unlikely that A. similata, A. fallax, and A. favosa may eventually prove to be forms of one species; but A. scutellaris and A. laticollis seem distinct enough—the former by its thickened prominent elytral ridges, and the latter by its very broad transverse thorax. 20. Asida dissimilis. (Tab. III. fig. 10, ¢.) Oblong oval, a little depressed above, dark reddish brown, densely clothed with brown scaly hairs. Head deeply impressed in front; prothorax transverse (@), or about as long as broad (¢), closely and finely punc- tured, rugulose, with a smooth raised central line, the disc with a rounded impression on each side near the middle and an oblique impression on each side at the base, rounded at the sides, narrowed and sinuate behind, the acute hind angles slightly overlapping the elytra, narrowed in front and the angles a little prominent, the lateral margins raised and slightly reflexed, base strongly bisinuate ; elytra a little wider than the thorax at the base, rounded at the sides and a little dilated about the middle ( @ ), subparallel and scarcely widening from the base (