aw ~‘ww. w ae Now mish e ’ ta pir — , 5 DOB S tah. ud ae lase- ah See’ we hd o ad ws y Ah z, Ie SOG ee” bad vege oe ol > Sy ne oa cae « Seay, eH Any J we" “A h* oat) Ne na eh = esrmnmumeytoy vv Shine sdb berg, ve y' my: id) wer be Se ee Ne ~ Si + = = ~ Soe, fSUCe ES > ze al Ne ‘2 : he wVE > ay \ oe eee a ah ce, = as , 1 % oi a eb oe , 4 ae Dap ce re, 2 by. era jeg 09 me = cas en SS 4 ara . CIS ort wy ea we, we wre De a ™ “ ‘gf Nhat eS Hye | Pe Mons eer eS joke ery wee Wty Vt,” ne pv Aiea, section es Sa 1 A pw, 0h sn Doh st con, oe d: My? 4 \. al ‘ye w — wT ey tse ae otis 5 } » wit Mem aAan- ‘. Far wa . x oe L 56 Z3, Qe Ny E 5. a PO he bade | pp tet oad a Seen? vw “4. “eA Sonos NALS *~ re Ww hehbh git bhatt oad ee Sy, Oy COROT tte Moa 9 9 Se So % y PALI EI held a, wt ~~\ © Ru 4 oo sPepeetig De Re. wie ny ~ , — ‘ie ? ei > See ot wie | be L aN re 1 & . cc — eS an bene | ~~ i. 4 < os Dau ae oh = ee a ze ms oo ae on wie = ‘ one th ~, ti LA eas Ka oe cS es LA ad =e ty NAD a er _~ ee \p game re LE AA ares og a ah Ce X as INVERTEBRALL \ LOOLOGY \ Frustacta 244 TAG! arene Ge os ty From the Proceedings of the California Academy of Sciences, July 17th, 1876. Remarks on the Crustacea of the Pacific Coast of North America, including a Catalogue of the Species in the Museum of the California Academy of Sciences, San Francisco. BY W. N. LOCKINGTON. The collection of Crustacea belonging to this institution is tolerably com- plete as regards the species inhabiting the Pacific Coast from Cape St. Lucas northwards, and also includes many forms from Oceania andthe Indo-Pacific, but is deficient in Atlantic, African and Australian forms. The Pacific Island specimens are, for the most part, the gift of Andrew Garrett; while those from this coast, to which these remarks are confined, have been presented chiefly by W. J. Fisher, Hy. Hemphill, Hy. Edwards and W. G. W. Harford. MAIOIDEA, The want of a good scientific library on this coast is severely felt by any one who attempts to describe a new species, and I have never felt it more acutely than when endeavoring to marshal in their proper places the numer- ous novelties belonging to this group of Crustacea that have been brought from the Gulf of California by Mr. W. J. Fisher. 2 PROCEEDINGS OF THE CALIFORNIA Without type specimens of any of the European or Atlantic coast genera, with abridged descriptions of many geneva, and nothing but incidental al- lusions to others, coupled by a reference to works inacessible to me, the task of identification is a hard one, and I therefore crave indulgence if, in one or two cases, a new genus has been founded where an old one would have fitted, or a species has been described as new because I have not seen the descrip- tion. The total number of species of Maioid crabs now known upon this coast, including the Parihenopide, two or three forms that may possibly be synony- mous, and one, the locality of which is doubtful, is thirty-nine, of which nineteen only are included in Stimpson’s ‘‘ Crustacea and Echinodermata of the Pacific Coast N. A.,’’ published in 1857. Eleven new species are described in this paper. Family MAIIDA. Sub-fam. INACHINZE. 1. Mierorhynchus (Inachus) tuberculatus. Lockington. Proc. Cal. Acad. Sci. Feb. 7, 1876. The rostrum in this species is entire, whereas in Inachus scorpio it is emar- ginate and shorter; moreover, the proportionate lengths of the second pair and the carapax are rather those of Mcrorhynchus than of Inachus (as given by Dana.) The present species does not appear to be very abundant, as Mr. Fisher ob- tained only two specimens on the West coast of Lower California. No. 1. Two specimens, male and female, dried. San Diego. Hy. Hemp- hill. 2. Chionwcetes Behringianus. Stimpson. Crust. and Echinodermata Pac. Shores N. A., p. 8. At 80 fathoms, off Cape Romanoff. PISINA. 3... Hyas latifrons. Stimpson. Prod. Animal. Evert. Ocean, Pac. Septen., 24. Like H. coarctatus but with the body shorter, wider in front, less tuberculated above, and with obtuse angles; the rostram shorter and less acute, and the fissure of the superior margin of the orbit closed. Common in Behring’s Straits. The Cal. Acad. Sci. possesses a single specimen of this species. No. la. Alaska, dried. W.J. Fisher. 4. Hi. lyratus. Dana. Crust. U.S. Ex. Exp. 1, p. 86, plate 1, fig. 1. Stimpson. Crust. and Echi. Pac. Shores N. A., 10. Deep water on the coast of Oregon. ACADEMY OF SCIENCES. 3 5. H.coarctatus. Leach. Malac. Pod. Brit. pl. XXI, b. Milne Edwds. Hist. Nat. des Crust. 1, 312. Brandt. Sibirische Reise, 1, 79. Stimpson. Crust. and Echi. Pac. Shores N. A., 10. Behring’s Straits. Herbstia parvifrons. Randall. Jour. Acad. Nat. Sci. Phil., VIII, 109 Gibbes, Proc. Amer. Assoc. for Advancement Sci., 170. Stimpson. Cy HP aC NAY Dr. Randall’s description of this species is very imperfect. Stimpson and Gibbes give no description, but simply refer to the specimen in the Philadel- phia Cabinet. ‘‘ Western America, Nutlall.”’ It is not improbable that one of the species described further on may be identical with this. ! ae Thoe sulcata S* 7. Platypes edentata’ WLockington. Proc. Cal. Acad. Sci., March 20, 1876. La Paz, 3fms. Port Escondido, Mulege Bay. Mazatlan. By an error in my original description, the ‘‘manus”’ of the first pair of limbs was stated to be alveolate on its upper edge. It is the merus that is alveolate. The extremely broad depressed appearance of the four hinder pairs is mainly due to the abundant tomentosity of their anterior and posterior margins, yet the limbs themselves are considerably flattened. The first pair of limbs, in alcoholic specimens, are of a bright, shining cai- mine tint. The shape of the carapax is that of the Pisinw, but the bifid ros- trum renders its position doubtful. No. 12. Female a.d two young specimens, dried. Mazatlan. Hy. Ed” wards. No. 18. Male and female, in spirits. Gulf of California. Fisher and Lockington. 8. Loxorhynchus grandis. Stimpson. Crust. and Echi. Pac. 8. N. A., 12. Stimpson says of this species, ‘‘ taken off the coast of California, near San Francisco.” I have never heard of this crab in this locality, and it is never brought to market. The Museum of the Cal. Acad. Sci. possesses two dried specimens, one, a male, from Santa Barbara, the other, a female, from Santa Catalina Island. No. 10. Male. Santa Barbara. Mr. Lorquin. No. 11. Female. Santa Catalina Island. 9. Loxorhynchus crispatus. Stimpson. Crust. and Echino. P.S. N. A., 13. I have not seen this species. 10. Homalacantha hirsuta. Hale Streets. Proc. Acad. Nat. Sci. Phil., 1871, 238. Panama. Ala,__nov-gen. Rostrum bifid to base, deflected downwards; fixed joint of outer antenne broad, the outer apex continued into a long spine in the same plane with the 4 PROCEEDINGS OF THE CALIFORNIA rostrum. Antero-lateral teeth triangular, the two posterior forming a broad wing-like expansion. The proper place of this genus is evidently among the Pisin, and its affin- ities with Rhodia (Bell) and Herbstia (Edwards), but the form of the carapax and of the first joint of outer antennz does not agree with either, while from the former it differs in having the first pair sightly longer than the second; and from the latter (at least from H. cordyliata,) in the presence of a pre-or- bital spine. ae a RS aT RO @ Le 11. Ala spinosa. novesp.— Widen oe UULUS - Carapax with broad lateral expansions rendering it wider than long. Ros- trum, bifid, shorter than the base of the external antenne. Movable basal points of antennz short. A long spine, exterior to the antennal base, pro- jecting nearly as far forward as the rostrum. An acute spine on the upper anterior margin of orbit, and a much smaller post-orbital. Antero-lateral spines three, beside the post orbital; the second and third forming the wing- likeexpansions of the carapax. Of these, the second is the largest, and the third is short anteriorly, but has a long thin posterior border. Upper sur- face of rostrum with two rows of hairs. Ten tufts of hairs on the gastric and intestinal regions, corresponding to the tubercles of those surfaces. Postero- lateral and posterior margins of carapax with a row of tufts of hairs. Chel- ipeds of equal proportions in both sexes, very slightly longer than the second pair; arm tubercular above, carpus ditto, manus smooth and slender; dactyli in contact, in female, gaping in male; the parts in contact serrated on inner edge, extremities pointed. Hinder pairs beset with spines, each spine ter- minating in a bunch of hairs. Abdomen of female surrounded by a fringe of hairs. Localities: La Paz, San José Island, Port Escondido, Gulf of California. eh, ae MeV ets Of CALAP AX elec ioyesala: co PROCEEDINGS OF THE CALIFORNIA I have lately found among the crustacea collected by Mr Fisher, two fine specimens of a Libinia, from San Bartolomé Bay, Lower California. They are much larger than the specimens described by Randall, and without tuber- cles interspersed among the spines. The species consist of a central dorsal row of eight, the first of which is the central one of a transverse row of three on the anterior portion of the gastric region. Two of the dorsal row belong to the cardiac, and one to the intestinal region. Nearly in a direct transverse line with the first cardiac spine are two others on each branchial region; and in a direct transverse line with the second cardiac spine are a blunt spine or tubercle and two spines on each branchial region, thus forming a row of seven. Right and left of the intestinal spine is a small one on the posterior part of each branchial region. Rostrum but slightly cleft, setose at extremity and on upper surface, not at all deflected; ante-orbital spine much smaller than post-orbital, which is broad and curved posteriorly; two spines on each antero-lateral margin, and two smaller ones near together on each hepatic re- gion, in a line between the anterior antero-lateral spine and the transverse row on the stomach. ‘The outermost spine of the transverse row of seven is the largest. The feet are without spines or tubercles. The largest specimen measures as follows: M.M Ben Ob hv Ol CAAA Kan ccc we seen os ctnor UMeEMe Te ores eaniascite epegevarci atetetaun. a cies oe Width of carapax, without measuring the spines.................. 39 Both the specimens are female. I have never seen a specimen of ZL. canaliculata, nor Randall’s specimen of L. afinis, but it is unusual to find an Atlantic species existing unaltered at such a point as San Bartolomé Bay, remote both from the Isthmus of Panama and from Behring’s Straits, and for this reason I should not be surprised if it should prove distinct, in which case I propose for it the specific name setosa, on account of its setose rostrum. : F This truce Soitstauls as Asetvsa sockt™, « remecds hras sriice closer beets f as MWICIPPINE. Le Seruigzariale 15, Micippa ovata. nex=sp. — Oro mila Pictcte De Saussure Carapax ovate, truncate in front, front narrower than in M. hirtipes, Dana. Post-orbital spine in the same line with pre-orbital, the two separated by a triangular notch. Antero-latéral margin with five sharp spines directed for- wards, excluding the post-orbital, the lateral edge of which is elongated. Upper surface of carapax arched transversely, almost semicircular in section; tubercles numerous, but without spines. Chelipeds short, smooth, fingers serrate at tip. Hairs sparsely scattered on hinder feet and carapax, rostrum pilose, especially round the margin. Localities: Port Escondido, Mulege Bay, Los Angeles Bay, San José Isl- and, La Paz. M.M. M.M. Mien ethiof CRUAPAX eis ck were ero k Cnn sisas S sea ee 21 19 Width of carapax at third antero-lateral spine ...... ee aoe 18 16 engthvot Grst pairs ce ere setweley ae eee ayers oeinis 24 A or oie 12.5 ACADEMY OF SCIENCES. ‘ Var. levis. Rostrum, orbits, antero-lateral spines, and limbs exactly as previously de- scribed, but the carapax more broadly ovate, and without tubercles, and the chelipeds much larger in the male. M.M IU yera¥eqrl step tele 42) oe) ee AB eRe oe On eae c or ec Coombe cea eon ace 21 Greatest width at fourth antero lateral spine............ ao repegee 19.5 Benet hrOtstivs tepals emer ois cease «. eeeeehe ney etol alse Pie ieee 3 This is a well-marked species, and exceedingly elegant in appearance. The male which I have described as var. /evis is the largest among several from various localities. The smooth carapax and large chelipeds render it con- spicuous among the others, yet I am inclined to believe these characters only varietal, and not improbably only individual. or No. 20. Male and female, in spirits. Gulf of California. Fisher and Lockington. CHORININZS. 16. Chorilia longipes. Dana. U.S. Ex. Exp., 1, p. 81, pl.1, fig. 5. Stimp- son, Crust. and Echi. Pac. S. N. A., 14. 17. Scyra acutifrons. Dana, U. S. Ex. Exp ., vol. I, p. 95, pl. 11, f. 2 Stimpson, Crust. and Echi. P. 8. N. A., 15. No. 7. A single dried specimen from San Diego, by Henry Hemphill, caught between tides. Chorilibinia. nov. gen. Rostrum long, broad, and emarginate at tip asin Libinia, but the eyes con- cealed beneath it as in Chorinus and its allies. Pre- and post-orbital spines acute, separated above and below by an acute fissure, and together constituting the orbit. Carapax triangular. 18. Chorilibinia angustus. nov. sp. Carapax triangular, narrowing gradually to the region of the eyes, the or- bits of which are salient. Rostrum long, emarginate at tip, the bifurcation divergent, extending only one-third the length of rostrum. Fixed joint of external antenne terminating outwardly in a long spine which precedes the pre-orbital when looked at from above. Pre-orbital spine large, acute, sep- arated from the acute post-orbital by an acute fissure, both above and below. Antero-lateral margin with three spines beside the post-orbital, the largest spine at the angle between antero- and postero-lateral margins. Tubercles of carapax prominent, each culminating in a single spine. A tubercle with spine on the posterior angle. Movable basal joints of outer antenn setose, slender, cylindrical. Chelipeds slender, about the same length as second pair; merus (arm) with four tubercles above; manus smooth, slender; dactyli small, slender, in contact most of their length, serrate on inner border. Four hinder pairs rounded, slender, second much the largest; claws sharp. ~~ 8 * PROCEEDINGS OF THE CALIFORNIA The whole of the upper and under surface, except the inner side of the hand and upper surface of the rostrum, tomentose, with longer hairs at inter- vals, and a row of the latter on each side of the rostrum. Locality, Gulf of California. Se we M. M. M. M. en SthWOLmcarapAxis-ae so. ee eee tect GER ees Gon anaes 20 23 Greatest width of carapax ..............-+-. Be es Sein. oe Ab 15 Out of the three specimens in my possession the female is the largest, but has the rostrum shorter than the males. 19. MITHRACID®, . =a Herbst (etla cam ptacantha 20. Mithrax armatus? De Saussure, Revue et Magasin de Zoologie, V, 335, ple EIT te Either this species or the succeeding is most probably the JZ. armatus of De Sanssure, but for the reasons given more fully under the next species, I cannot be certain of its identity, and therefore subjoin a description. Rostrum bifid, the horns not lamellate; carapax broadly pyriform; verrucose throughout its upper surface, the verruce becoming spinose on the poster- ior portion of the carapace. Exterior side of the fixed joint of outer an- tenn with a long spine at the extremity, followed by a shorter. A short pre- orbital spine, separated by a deep notch from the post-orbital. Margin of carapace with five large spines besides the post-orbital, four upon the antero- lateral, the fifth upon the postero-lateral margin. A second row of smaller spines upon the sub-branchial region. First pair of limbs short; dactyli not tapering, obtuse and imperfectly spoon-shaped at end; propodus oblong, more than twice as long as wide, smooth; carpus and merus spinose above, but without the smaller tubercles found on the carapax. Four hinder pairs slender, cylindrical; merus and carpus spinose above like those of first pair; propodus slightly hirsute, smooth; terminal joint (dactylus, tarsus) hirsute, ending in a recurved claw of an orange color, Abdomen six-jointed in the female. The whole of the upper surface of carapax and limbs, between the spines and tubercles, is finely punctate; and the whole of the lower surfaces tomentose. A single female from Mazatlan, presented by Hy. Edwards, is the only specimen I have seen of the species. M. M. Length of carapax to, tip of TOStrUM! .. oe P lee w.6 oe cee ee aes ae sie 32 Width of carapax from tip to tip of fourth marginal spine........... 30 Ibevaegdaltoye hbys{n MUS a eMoEC on cad bab aacigdae coGmoGs sGanus5 SpOCaC 28 en eth Of Seco Malic ie. ieleinictetecis eney= saltvaya etal Oateas te ie eae neo 32 Color of the specimen a light flesh tint. No. 3. Female, dry. Mazatlan. Hy. Edwards. Tc has = ‘ pws ‘a ® /hes SP Crnmre i PAG amptacanth @ atete a K larger tran ts . Antes Tr na pubesen e an the Carapax, an | the stad ) Gi (CTU IMOce \ Ovsceave t lre t CHe ney CRIWET At y l rh ave APVAL clescaibes. . [he post ra-ladernad spines” arte anty Very Theveisne toath my thecent a Sr the cCacty lak the hi Le pre pls - gis, M ] thisrs con Fined tu the mate beac les Aare er pusl as 2) tuber ACADEMY OF SCIENCES. 8) / ey eee ary nl Gar ae 21. Mthrax areolatus. nov. sp. /g Che N]. aA tio tlie The only species of Mithracine that have been, to my knowledge, previously described from this coast are the Mithrax armatus of De Saussure, and the Mithraculus coronatus of White and Stimpson. De Saussure’s description is not accessible to me, and the only mention I have of the species is in Stimpson’s Crust. and Echi. Pac. Shores N. A., where the reference is given, and the locality (Mazatlan) of the specimen in the Mus. Phil. Acad. Mithraculus coronatus finds a place in the ‘‘ Catalogue of Crustacea from the Isthmus of Panama, collected by J. A. McNeil,’ by T. Hale Streets, but that author does not state from which side of the Isthmus his specimens came. I find the same species in 8. I. Smith’s “ Brazilian Crustacea,’’ from which I infer that it is not unlikely McNeil’s specimens were from Aspinwall. Dana says of Mithrax: ‘‘ Articulus antennarum externorum Imus apice externo, duabus spinis longis armatus,’’ but the antennal spines in M. dichotomus of the Mediterranean are very short, as they are in the present form. Mithraculus, however, is stated by Dana to be without long antennal spines. As the antennal spines in this species are evident, but are rather teeth or lobes than spines, I assume that I have before me either De Saussure’s Mth- rax armdtus or a new species—most probably the latter, more especially as, besides the doubtful locality, the proportions of the carapax given by S. I. Smith for his specimens of Mithraculus coronatus, do not agree with the present species, which has the length and breadth more nearly equal. I subjoin a short description: : Carapax almost orbicular, slightly wider than long; front four-lobed, the pre-orbital teeth projecting almost level with the two central lobes which con- stitute the rostrum. Fixed joint of outer antennze with two obtuse teeth on its outer apex. Antero-lateral margin with five teeth, including the post- orbital, third tooth largest. Regions of carapax very distinct and subdivided into areolets answering to - those of the Xanthine and Chlorodine; areolets with punctate surface, without spines or teeth, and almost free from hair. Merus and carpus of first pair with spinose tubercles, hand smooth, cristate above. Those of female similar but smaller. Posterior feet beset with spines on their exposed surfaces, and densely pilose. IDS OO CRAES eso bn casa = oo eau Ss osbeoeenoneas coe , 16 13 Breadthyotidittors ssc eae ae ci. RPMs cat ts ox Sree nan aikors ate 18.5 15 Locualities—Port Escondido, San José Island, Gulf of California. Found at low tide under stones and coral. Color, in spirits, light red. If this species should prove to be new, I propose to name it Mithrax areo- latus. The females, when collected in the month of August, were loaded with ova. No. 13. Male and female, in spirits. Gulf of California. Fisher and Lock- ington. a ~ 10 PROCEEDINGS OF THE CALIFORNIA Fisheria, nov--ger. Ma 7 Op } ) YS M. Felwv cls Carapax orbiculo-ovate, depressed, with short preorbital and post-orbital spines. First joint of outer antenne wide, terminating outwardly in a long spine, which is followed by three others, which form the inferior margin of the orbit. Chelipeds of male, 21% times the length of carapax; those of fe- male shorter than the second pair. Fingers serrate, obtuse and imperfectly spoon-shaped at tip. This genus is evidently nearly allied to Mithraxr, but the great length of the first and second pairs of limbs in the male, as compared with the carapax, and the row of teeth on the external margin of the fixed antennal joint, appear to necessitate its separation. ‘lhe general aspect of the single species here de- seribed is totally different from that of WW. dichotomus or M. asper, which are the only two species I have seen figured. Micrnaphrys 22. Fisher depress. Aov.sp Male—Carapax depressed, widely pyriform, the regions marked by slight elevations granulated on the summit, the margins and spaces between the ele- vations somewhat tomentose. Rostrum bifid, short, reaching to the centre of the terminal joint at base of outer antennze. A long spine at the external an- _ gle of the fixed joint of outer antennze, succeeded by three smaller spines. Movable base of outer antennz as long as flagellum, second joint largest, sec- ond and third joints slender, cylindrical. Upper surface of carapax almost spineless, margins and orbits spinous. Or- bit with two teeth above and four acute spines below, the two anterior of which belong to the fixed joint of antenne. A row of teeth on the hepatic re- gion, continued outwards from the maxillipeds. ae Chelipeds of male enormously long, ischium produced into an acute spine on its anterior border; meros rounded, as long as post-rostral portion of cara- pax, beset with acute spines on its upper surface; carpus short, tuberculated; manus slightly longer than entire length of carapax (measuring to the end of the fixed finger); entirely smooth, compressed and broad, with rounded upper and lower edges; dactyli gaping, their obtuse ends imperfectly spoon-shaped and serrated, movable finger with a tubercle at half its length on inner border. Second pair 144 times as long as carapax, meros similar to that of first pair, with a row of about ten long spines on its upper surface, and a single spine on the distal extremity of its lower; carpus with a few spines; propodus very slender, entirely unarmed. Three hinder pairs similar to second pair, all with a single spine at distal end of underside of meros. Four hinder pairs sparsely hirsute above. M. M. Ihenothyomcarapax aniston ess... Weer erect eee eee eres = OU ETH NEC CU), Oe PE EAA asa Ris nc ocuhrh feat an cls me eee . 24 J byera¥eqilal hi Sab jOpNReA Damp eMOA GES EeO OEE 16 cooo sOCmdGr Soar Gee OS Wenethrotemanug.olmGithonic.ose.ccas Meer ora Crettereemne ere 33 Wena thro fisecondegpaitinsse:.eceis aos een) iat One a renee 42 onothy Of A titmmanne ss cre Gs. creo Sa ats, eeu tee seteceeiee cra einai es 33 These measurements are taken from the largest of six male specimens from Port Escondido, Lower California. ACADEMY OF SCIENCES. 1] Female—Carapax asin male. Chelipeds shorter than second pair, fingers less widely gaping, no tooth on movable finger. In other respects as in male. M.M Ten ethVoiCarapaxu nyse” cus cleiciere) oc <0) eer PRU sera aos soni as 21 Whrclitink@ fa clibto tenes eres ae eeerenere tat -.2y- jl. 1 Sa ay pects Soe ny eveg ctokey 18 Length of first pair....... Fenton inet 5 Got yey voter ees ate 24 Meno thyotiseconaspaltpy re cmidcractrtesa | ae eee ee enero sincera 29 These dimensions are taken from the largest of eight specimens from Port Escondido and San José Island, Gulf of California. Color, in spirits, bright red, the smooth manus, undersides of legs, and buccal apparatus especially bright. No. 21. Male and female, in spirits. Fisher and Lockington. 23. Mithraculus triangulatus. nov. sp. Carapax as broad aslong: in form an acute isosceles triangle truncated in front; regions prominent, antero-lateral margin with three lobes. Rostrum very short, bifid, scarcely projecting beyond the line of the fixed joint of the outer antenne, which terminates in a blunt tooth, followed by a second tooth or rather lobe, forming part of the lower margin of the orbit. Outer antenne ciliate, movable basal joints cylindrical, short; second joint considerably stouter than the third. Lower margin of orbit formed by the teeth belonging to the fixed antennal joint, followed by a small tooth intervening between them and the post-orbital. Pre-orbital tooth scarcely evident, forming the ob- tuse termination of the elevated orbital region. Chelipeds stout, longer than the second pair by almost the length of the hand, arm tubercular above, hand and carpus smooth, the former broad and heavy, stouter than the arm; dactyli obtuse and spoon-shaped at end, the movable one with a single tubercle on the inner margin. Hinder limbs tubercular on upper surface; carapax and chelipeds without tomentosity, but a few hairs scattered on the hinder limbs. Females much smaller than males; the chelipeds small, about equal in length to the second pair. Locality—Gulf of California. Cy ie M.M. M.M. WMenpiuhiomCarapaxee.s vais ae) Bel ss - ce PAleisisles , creates 16 15.5 Tuenpthyot first pair.:... ...... reas § 2 soaeron A acter eee . 27 11.5 Length of second pair. ett ds Sin 5 +5 ieee eee REE FI 15 12 Width of carapax across he POM or portion, where widest... 14 12 The areolets of the carapax are prominent, but without spines; but the two largest posterior lobes of the antero-lateral margin are tubercular, and there are a few small tubercles on each postero-lateral margin. Color, in spirits, uniform reddish. No. 15. Several specimens, both sexes, in spirits. Fisher and Lockington. 24. Mithraculus coronatus. Stimpson. Amer. Jour. Sci., second ser., XXIX, 1860, p. 182; Am. Lye. Nat. Hist., New York, VII, p. 186; White (?), List. Crust. Brit. Mus., p. 7; T. Hale Streets, Proc. Acad. Nat. Sci., Phil., Dec. 5, 1871, p. 239. 12 PROCEEDINGS OF THE CALIFORNIA This species is mentioned by Hale Streets in his ‘‘ Catalogue of Crustacea from the Isthmus of Panama, collected by J. A. McNeil,’”? but that author does not state whether the specimens were from the Pacific or Atlantic shore of the Isthmus. It is found at Aspinwall and along the Brazilian coast. TYCHIDH. TK F /: f I ne = hae ane 7 lve poe P 25. Tyche brevipostris. Nov. sp. EM Nf ee eed TS) Be li. Carapax an elongated rectangle with sinuate sides; rostrum short, depressed; _ laminate; pre-orbital spine long, elevated, produced almost as far forwards teu sulesas the rostrum when viewed from above. A thin broad lobe behind the pre- cofth acl orbital spine, concealing the elongated eyes except at the tip. _ Fixed joint of 9". outer antenne narrow, and boldly relieved from the surrounding parts, sec- Koo tubered a ond and third joints cylindrical. Peduncles of eyes inserted level with the ve i fixed joint of antennew. Anterior portion of carapax bent downwards, poste-¢),. i. wende4 rior portion shield-shaped, the lateral and posterior margins overhanging, they 4. biva tlobe, latter thin. First pair of limbs shorter than second, scarcely projecting be- tlie anterior a a . é Not tprweuw 6 yond the carapax. Second pair about as long as carapax, slender; succeeding i ey a teed rLaNG A { pairs similar. M. M. AMEND OL CRVADA Ka. ole a «ere eicselegtinls Mates seas fo el = S30 UR BH ROOD Come 17 TVG oy debtn tole Bee oeOb docs sgub es ccoustnd ~soonc2pOUaunagoaD 11 A single female specimen from Port Escondido, Gulf of California. The general aspect of this little crab is that of a dried leaf; the anterior portion, deflected and somewhat pilose, does not attract the eye, while the shield-shaped posterior portion is very conspicuous. From the cential tuber- cle of the gastric region, which is the most elevated portion of the carapax, a ridge is continued outwards on each side to the margin of the carapax, the surface of which is increased by expansions with sinuate edges. The whole of this leaf-like posterior surface is inclined in the opposite direction to the frontal portion. ‘The pre-orbital spines project like a pair of horns immedi- ately in front of the eye-shields, each of which is an obtuse isosceles triangle with its apex directed laterally. As the specimen is a female it is impossible to be certain whether the small chelipeds are characteristic of the species, or of the sex only. I have placed this species in the genus Tyche of Bell, with which it has the following char- acters in common: Eyes without orbits, hiding below the carapax, which is oblong, wide in front and broad across the orbits, depressed, without post-or- bital spines, and with pre-orbital spines produced to a line with the rostrum ; first joint of external antenne long, unarmed. This form differs, however, from the generic description as given by Dana, in the shortness of the rostrum, which is bent downwards, but not more so than the anterior portion of the carapax. EURYPODIDA. 26. Oregonia gracilis. Dana. U.S. Ex. Exp., I, 106, pl. III, f. 2. Stimp- son,- Grust and Echi. Pac.-S-N. A., 16. - oe = eee ACADEMY OF SCIENCES, iS 27. Oregonia hirta, Dana. U. 8S. Ex. Exp., I, 107, pl. III, f. 3. Stimp- son. Crust. and Echi. Pac. S. N. A. Both the Oregonie are found in deep water. Locality, Puget Sound. I have not seen either of these species. 28. Leptopodia debilis. S. I. Smith. Rep. Peabody Acad. Sci., 1869. Panama, Pearl Islands. A single specimen of this species was found in Mr. Fisher’s collection, from the Gulf Coast of Lower California. 29. Inachoides (Microrhynchus) Hemphillii. Lockington. Proc. Cal. Acad. Sci., February 7, 1876. I have been in some doubt whether to refer this species to Inachoides or Microrhynchus, but as the eyes are tolerat ly elongated and do not appear to be retractile within the small orbits, I prefer the former. On the other hand, it differs from both genera in the absence of a post-orbital spine, unless a single spine on the antero-lateral margin, situated almost the length of the rostrum behind the eyes, can have a right to that name. The rostrum is one-fourth - the length-of the posterior portion of the carapax. The want of a post-orbital Merve rsa spine scarcely warrants the establishment of a new genus, but the definition’? \\ 222: of the genus Invchoides must, to admit it, be altered slightly, thus— oe beaed P er \e Inachoides. Edwds and Lucas. Carapax valde gibbosus rostro longiusculo, © , pie b acuto, spina post-orbitalt parva aut nulla. Pedes 8, postici sat longi, gracillimi,!/ eo Dn Articulus antennarum externarum Imus angustus. | The words aut nulla admit the present species. Localities—San Diego, San Luis Obispo, both in Upper California; La Paz, where it has been dredged from a bottom of sand and mud; San José Island; Amortigaado Bay; Port Escondido; Mulege Bay— all in the Gulf of California. The largest specimen I have seen, a male, exceeds in size the type in the possession of the Acad- emy. The dimensions are as follows: M. Length of carapax, including rostrum. 2.02: ..0<<0..<.««-cssleeeee 34 Greatest width of ditto............ BS RSD Pee RA Ae et Oe ape 13 Tienes throistiest pair peeun is Lemire.) «iseeeAo ath aa ied cao nist ee cls toc 40 Bien sib gotgseCOnd spats tel stit rit siecs- < < vee Teas ep Sic ascra ote a ee 70 One of the largest females measures 15 M. Mm. in length and 8 in width. The carapax of this species is free from the parasitic growth, often so abundant on maioid crabs. No. 2. Male, San Diego, 7 fms. Hy. Hemphill. 30. Inachoides brevirostrum. nov. sp. Carapax pyriform, the regions in the central line of the body more elevated . a j than the lateral regions. Rostrum short, simple, eonsisting-of—the-spinous Aya sute ene ee et eee ee an antenne, Qp- the imargind 14 PROCEEDINGS OF THE CALIFORNIA teenissonrewhat afd. Eyes long, not retractile. A small pre-orbital spine. Fixed joint of external antenne prolonged externally into a short but acute spine; movable joints not concealed under the rostrum. First pair of feet shorter than the second in the male, than the third in the female; slender, cylindrical, the dactyli straight, in contact throughout their whole length, and almost equal in length to the manus. Four hinder pairs slender, cylindrical, the second rather more than 124 times the entire length of the carapax. Car- apax and abdomen tomentose, chelipeds tomentose, four hinder pairs ciliate, sides of rostrum ditto. Locality, Magdalena Bay, L. C.; dredged at a depth of three fathoms. Four females and one male. ‘of M. M. Menpiniot CALA paxsneris emir sei eck sien nice oe cian tie 9.5 Wircdthvohidittor, msc at actia rita. csleenres Shc Cea Ocenia Py ee 6. The females are wider in proportion than the males. Notwithstanding the comparative shortness of the rostrum, and also of the carapax, the characters of the eyes and antenne prove this species to De an Znachoides. PERICERID. ‘ PERICERINA. 31. Pugettia gracilis. Dana. U.S. Ex. Exp., I, 117, pl. IV, f. 3. Stimp- son. Crust. and Echi. Pac. S. N. A., 16. Localities—Puget Sound, Vancouver’s Island; Mutiny Bay, Alaska; San Luis Obispo. No. —. Male, in spirits, Vancouver’s Island. No. 19. Female, in spirits, Mutiny’ Bay, Alaska. Presented by Alaska Commercial Company. 32. Pugeltia Richit. Dana. U.S. Ex. Hxp.) ly Liv LVnfp4.) otimp= son. Crust. and Echi. Pac. S. N. A., 17. The only locality at present certainly known for this crustacean is San Di- ego. Dana says of his specimen, ‘‘ From California.”’ No. 9. Several dried specimens from San Diego. Henry Hemphill. 33. Pellinia longioculis. nov. sp. Posterior portion of carapax broadly triangular, post-orbital spine expanded, trans-orbital width rather less than half the greatest width; rostrum short, stout, bifid. Stomachal region prominent. Fixed joint of external antenne elmarginate at apex, the outer tooth acute, not longer than the inner. Pedun- cles of eyes about equal in length to the distance between the eyes. First pair of feet about equal in length to the second and to the length of the body; meros tuberculate; hand thin, broad, smooth, marbled; fingers touching at the extreme tip only; a tooth on the inside of the movable finger near its base- Poe eI : .- 0 /s tArs YE cere taps CHacrsry Mie Anace 7 It agree pret 4 evell evrth SE rclese hp tron of Che re nralk ria Wes he Be Bey SP Wit 21) le ope , &. Luofth his tts eee aes Ach e that of A Wrra| de JEU aps a angele 3 ope ACADEMY OF SCIENCES. Id Four hinder pairs short, slender, cylindrical, setose, except the tarsus, which is smooth and shining, like the manus of the first pair. Carapax and abdomen tomentose above and below. A single specimen, male, found among a num- ber of another species from different localities, so that its locality is uncertain, further than that it is from Lower California. Length and breadth nearly equal, about eight millimetres. This species differs from Peltinia, Dana, in the length of the eyes. The an- tenn are not hidden by the rostrum, so that it is impossible to place it among the Epialtine. It appears to me to be in its characters intermediate between Acanthonyx and Epialtus, and therefore should find a place in Peltinia, but to accommodite it the character, ‘‘ Eyes not retractile, short,’? must be changed to ‘‘ Eyes not retractile, of variable length.”’ EPIALTIN#E. 34. pialtus produclus. Randall. J. A. N.S. Phil., VIII, 110, Gibbes. Proc. Am. Asso., 1850, p. 173. Dana. U. S. Ex. Exp., I, 133, pl. Vile atin re The figure in Dana’s work represents the female, which differs sc much from the male that it might easily be mistaken for a distinct species. The largest specimen in this collection is a male from Santa Rosa Island, Cal., collected and presented by W. G. W. Harford. This specimen displays well the differences between the sexes. It is armed with a large pair of chelipeds, the hand and fingers of which equal in length the breadth of the carapax. The four hinder pairs of legs are long and slender, and the carapax in all its dimensions greatly exceeds that of the female. No. 4. Male, fine specimen, dried. Santa Barbara. W.G. W. Harford. No. 5. Female, dried. Donor unknown. 35. Epialtus Nutlallii. Randall. loc. cit., VIII, 109, pl. III. Gibbes. Joc. Qh pela: It is rather strange that this crustacean should not have found its way into our collection. Randall gives ‘“ Upper California ’’ as its locality. 36. Epialtus minimus. Lockington. nov. sp. Rostrum larger than usual in the genus, the emarginated extremities diver- gent. Trans-orbital width small. No pre-orbital or post-orbital spine. An- tero-lateral margin with two triangular teeth, the anterior much the largest, their front margin at right angles to the carapax. Without the anterior of the teeth, the form of the carapax would be triangular. Distance from the anterior line of the first teeth to tip of rostrum about equal to the poste- rior portion of the carapax. First pair of feet in the male longer than the second, fingers obtuse and imperfectly spoon-shaped at their tips. Eight pos- terior feet slender, cylindrical, naked, except terminal joint, which is fringed below with short setae. Penultimate joint with one or two small spines on 16 PROCEEDINGS OF -:THE CALIFORNIA the under side. Localities—Port Escondido, San Jose Island, both in the Gulf of California. Found at low tide under stones and in coral. M.M. M.M Wen gth i ofiCarapekemney tic:n:< ve cistee stale c(e cs ods oie stelle was oiis a6 14 14 Widthyoitdtuto re mmrrenie tec ctcisetrrver co.) =.2 cle sos ers esleipiauyoiets 11 12 Men gig otetirs ty Bit. eys crete oy eeeretsetetetetste la so: so: l= oe oKolens: Selagee ect 18 The carapax of the largest female is stouter and broader than that of the largest male, but the latter more than makes up for this deficiency by the ex- tra length of his chelipeds. In some of the females the manus is tubercu- lated, but is smooth in the males and in other females. No. 17. Male and female, in spivits. Fisher and Lockington. PARTHENOPIDS. 37. Parthenope (Lambrus) punctatissima. Owen. Zool. Beechey’s Voyage, 81, pl XXIV, f.4. Stimpson, Crust. and Echi. Pac. 8. N. A., 18. 38. Lambrus frons-acutis. Lockington. Proc. Cal. Acad. Sci., Feb. 7th, 1876. From Boca de Los Piedras, Sinaloa, Mr. W. J. Fisher brought two small specimens. No.8. Santa Catalina Island. Hy. Hemphill (dried). 39. Cryptopodia occidentalis, Dana, Am. Jour. Sci., 2d ser., XVIIT, 430. Gibbes. Proc. Elliott Soc. Nat. Hist., Charleston, 8. C. Stimpson, Crust. and Echi. Pac. S. N. A., 18. * ‘ain a. oa eee Wye \ yw ~, Aa aa hAe aes NIN OANA Ld aay pat 7 NA aa NO ae mM 1) i YTV IV Ww OW; : enaeaa ann A= aRAA aa ar aena Nat f : : af _AaAF rete eo tM be eg mo m = 2 mana hd 1" 6 ee aassss> “yy senaaesy Ss ~ SS aw ADA 443° ~* NN . 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