260 NEW (JENKKA ANT) SPECIES OF CRABS RATlllUIN. 



I<tl>r<l, tlir ni(Mli;in lolx's roiiiidt'd iiiid iiicoiispicnoiis, wiid s('|»;ir;itrd by 

 sliidlow uolclics Irom (lie liioad l;dci;d lolics. 'I'lic upper iiiwi'uiu (d' (lie 

 oiltil bt'Mis (wo (ri;iii,i;nl;ir t«'('lli ; MuMuilcr ;iii.i;I(' is sliiiip ;iiid iniirli 

 |ti(»diic(Ml. Ill ;iddi(i(tii llicic arc' ( wo Mciilc ;iiitci«» lidcrnl (im'IIi pro 

 jccliii";' liltlc beyond llie iiiaiuiiial line, (lie outer edjuc <»r (lie tcelh 

 nearly s(iaij;li(. The pos(erior ma ruin cd" (lie s])eeiiiieii is iiiiililaled, bii( 

 (lu're can be dis<*eriied near the iiiarjiin a (ransverse line nl' se\('ii thin 

 eloin;a(ed (nbertdes; (he inar.uin i(s«'IC is vei>' iiiinidely t^rannlate, and 

 between i( and \\\v (iibereles (he snrlaee is jiraiin]a(e. The lower or- 

 bital border has two (issures and (lie inner lobe is two lobed at the 

 sninuiit. liasal antennal joint li(tle advanced. 8(eninin and al)donien 

 liiiely pubesceni ; a (rans\«>rse lidiiO on the lildi sternal se^uieid ; ab- 

 domen ol" male more tapcMinn than in /ndjU'ts: niariiin (»l" penultimate 

 seuniont with ail obtuse anv,le; (eiiiiinal se.i;nieii( longer than broad, 

 rounded, reaeliing" (he inner margin oC the. ischium of the maxilliiicds. 

 Clielipeds (the iij;ht one only is preserved) weak, tuberculate, jMibes- 

 ceid; carpus armed wi(li many iirey,ular sharp edited tubercles; hand 

 broader than iii /'r<((/ili,s, tubercles arrani;-ed lon<iituilinally, the t^yo 

 rows on (he upper surCace (he lar.nest. Ambulatory lej>s of moderate 

 leuiidi; lirst three i)airs with a prominent tootii at the upper distal end 

 oi'the meral joint; second and (hird pairs \\i(li a (oo(h near the ui)per 

 distal end of (he cari)al joiid ; the nieral rid^'cs are formed by sjiiny 

 fiiberides; the carpal rid^'cs are thin, promineid, and limdy denticulate. 



The vspecinien in alcohol is dark colored and mottled, and the legs 

 have broad, transverse bands of dark and li^ld. 



Length,!); width, lO.o; leiigtli of (irst ambulatory leg, about 11; of 

 sectmd, 18; offourdi, about 7.5 millimeters. 



(',ulf of California, la(. 21^ of >^., hmg. 110^ oO' W., 10 fathoms, sand, 

 broken shells, temi)era(ure (14'^, station L*!M)8: V. !S. Fish Commission 

 yteamer Albatrotis, 1889; one male (17181). 



