COMPLETE HAIG: EASTERN PACIFIC PORCELLANIDAE 29 



34a. Outer orbital angle not produced ; pubescence in gape of fin- 

 gers produced into a short tuft; merus of walking legs naked 

 cinctipes 



34b. Outer orbital angle produced; pubescence in gape of fingers 

 not produced into a tuft ; merus of walking legs with a fringe 

 of plumose hairs 35 



35a. Carapace nearly smooth; front with a shallow median sulcus; 

 flagellum with long hairs; outer half of dorsal surface of 

 manus with a short pubescence laevigatus 



35b. Carapace with distinct granulations, some of them transversely 

 elongate; front with a deep median groove; flagellum naked 

 or with vestigial hairs; outer half of dorsal surface of manus 

 naked granulosus 



36a. Front distinctly trilobate; manus not swollen, its outer edge 



thin; gape of fingers without a thick tuft of pubescence. . 37 



36b. Front sinuously triangular; manus somewhat swollen on dor- 

 sal surface, its outer margin with a crest; gape of fingers 

 with pubescence produced into a thick tuft 38 



37a. Carapace and chelipeds naked or with traces of pubescence; 

 lateral lobes of front narrower than median lobe; carpus un- 

 armed, its margins slightly converging distally. tridentatus 



37b. Entire crab covered with a short, fine tomentum, produced 

 into a long fringe on outer margin of manus; frontal lobes 

 about equal in breadth; anterior margin of carpus with a 

 strong proximal lobe, anterior and posterior margins converg- 

 ing distally from its highest point. . . . holotrichus 



38a. Entire carapace rough and uneven ; carpus unarmed ; merus 

 of walking leg 3 broad, inflated. . . . platymerus 



38b. Carapace nearly smooth anteriorly; anterior margin of car- 

 pus with enlarged granules or spinules; merus of leg 3 not 

 inflated 39 



39a. Entire carapace finely and evenly granulate; crest on outer 

 margin of manus defined by a distinct groove. . schmitti 



39b. Carapace with low, large, rough granules posterior to cervi- 

 cal groove, nearly smooth anteriorly; crest on outer margin 

 of manus not defined by a distinct groove. . brachycarpus 



