NO. 1168. FBE8H-WATE11 CRABS OF AMERICA— ItATHBUN, 511 



1'^'. Aniltulatory lojifs of moderafco width. A well-miirked outer orhil.al 



iiotoh htiuvUrl 



\)'. MoruH of iuaxilli]>(Ml with oiitor iiuirji;iii coiivox, I'oniiiii^' a Hinglo ciirvo 

 to i\w iiiH^i'tioii of tho |)a.l|iuH. 

 E. Kxojjnatli r«Mlii((((l (.o a Htiiriiii. 

 F. Hu|M)rior Ciontal maifiin iiiiilobiito. Modiaii Hiitiiro altHoiil. (ir faintly 

 iiidicat<Ml. 



O. Cervical HiitiiroH N(raij{ht. Carapac.o (iiuily {jraiiulato ilcnlicnlata 



Q'. Oervical HntiireH curved, arching toward each (»th(M'. ('arapacc* 



(^oa,rH(dy granulate ut/amihH 



F'. (Superior I'ronta! margin hilohate. A median Huture proHOut . . ./«H«or 

 E'. Kxiiguath not n^duced to a Htuni)). 

 F. Inferior margin of front eonvex. 



G. Cervical Hiiture markedly HinuouH dilalalti 



G'. ('ervieal Huture n<iarly Htraight Nitlcifronn 



F'. Inferior margin (if front not cojivex, hut NinuouH or straight. 



G. Amhulatory legs slender. Carapace smooth to the naked oy<\ 



hiHiilnrallH 

 G'. Amhulatory legs not sleiulor. Carapace graiinhite to the naked 



<\V<' xantUHi 



B^ Superior margin of front keeled. 



C. A tuherele on outer Nurface of manns at hane of ling<^rH. 



I>. MeruH of uuixiiliped tiarrow, outer uuugiu very ohliijue. Dactylus of 



larger <'helip<t(l wiile througliout its length ronradi 



D'. McruH of maxllliped hroa«l, the external and antero-exterual margin 

 very arcuate. 



K. lOxognatli icMinccd to a. Htumjt i/annuni 



J'j'. i'lxognuilh not r<iduc<)d to a stump. 



F. Orhit morj) than twice tiie depth of the eyo maijiHi 



V, Orliili h^HH than twic(« tlui dcjith of the «»ye tHheitiilata 



C. No tubercle on outer Hurfa(;r of manuH at liase of fingi^rs. 



1). Kxogualh redneed to a Ntiimp, less than one-thir<l th(^ length of tln^ 

 ischium of tho endognath. 



10. (!ervical Huture straight dun lata 



IV. Cervical suture arching forward in anterior half aJflniH 



D'. Kxognatli at hiast one-third the length of the isohium of the emlognath. 

 Vj. Maxlllipeds much wldcu- than tho buccal cavity, nearly covering the 



J ugal area, maxiUipcH 



VJ . MaxilliiK'dH only a little wider than tho buccal c^avity. 

 ]"'. CarajUKie very c(uivex hmgitudinaily. 

 G. Lateral margins of fourth to sixth segments of ulidomeu of male 

 not arcMniie. Kxognath reaching distal third of ischinm. 



eonrv.xa 



G'. Lateral uuirgins of lourth to sixth segments of abdonu^n of nnile 



arcuate, i'lxognalh not reaching tlistal third of ischium. 



iu\lUix\j'ronH 

 V . Carai)aco IlatteiuMl or slightly convex longitudinally. 

 O. Cervical suture straight or nearly so. Lateral margin armed with 

 rathei' large (for the genus) separat(Ml teeth. ..riohmoiidi 

 G'. Cervical suture curved. 



M. Carai»ace very wide, more than Iji times as wide* as long. 



vohniibiana 

 H'. Carapa(',(» narrower, less than Ijj tinuw as wide as hmg. 

 J. Carapa.co (iuely grunulale. 



K. A Huiall spe(!ics, less than HO nun. wide. Lower nuirgin of 

 front tubcrculato jntUvri 



