THE GKAPSOID CBABS OP AMERICA. 



133 



Range. Panama (Faxon) to Punta Arenas, Patagonia (Lenz). 



Material examined. 



Panama; Mar. 12, 1891; steamer Albatross; 1 male, 4 females 

 ovig., cotypes (20625). 



Peru ; near northeast side of San Lorenzo Island ; in piece of tube 

 resembling that of Chaetopterus; 2^ fathoms; R. E. Coker; 1 female 

 ovig. (40446). 



PINNIXA FAXONI, 1 new species. 

 Plate 29, figs. 4-7. 



Type-locality. Trinidad; Albatross; male holotype; Cat. No. 7639, 

 U.S.N.M. 



a b 



FIG. 77. PIKXIXA FAXONI (7639), X 131. a, ABDOMEN OP MALE; 6, OUTER MAXILLIPED. 



Diagnosis. Blunt ridge entirely across hinder part of carapace. 

 Ultimate segment of maxilliped much longer than penultimate. 

 Fingers gaping. Extremity of male abdomen much enlarged, last 

 segment subtriangtilar. 



Description of male. Near transversalis, but much shaggier on all 

 margins, especially on posterior margin of carapace and across distal 

 end of second abdominal somite and thence in a straight line across 

 sternum. Ridge across carapace at cardiac region not sharp, but 

 bluntly rounded. Front more horizontal and advanced. Eyes and 

 orbits shorter and wider. 



Chelipeds similar, but palm more oblong, not narrowing distally; 

 thumb rather short, tip upcurved; dactylus curved obliquely down, 

 leaving a triangular gape when closed ; a line of hair on lower edge 

 of propodus, another a little above margin and continued on thumb, 

 a third at middle of palm, upper portion densely hairy and granulate. 



Legs similar, but a little shorter and wider, especially noticeable 

 in merus of last two legs. Abdomen wider, fourth, fifth, and sixth 



1 For Dr. Walter Faxon, carcinologlst of the Museum of Comparative Zoology, Cam- 

 bridge, Mass. 



