156 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



Abdomen as long as carapace, membranous, terga membranous, not 

 in contact with one another; caudal shield calcified, suture flexible, 

 anterior tergum longitudinally and transversely convex, smooth, polished, 

 posterolateral corners produced slightly, posterior tergum slightly 

 smaller. 



Telson symmetrical, posterior margin with wide, shallow "V"- 

 shaped notch, with flattened, acute, downward-curving teeth of varying 

 size, restricted to notch area; uropods larger on left side, anterior blade 

 with rasp over most of outer surface, posterior blade much reduced, 

 completely covered by rasp. 



Distribution: Off Cape San Lucas, Gulf of California (Benedict), 

 Arena Bank, Gulf of California, 30 to 50 fathoms (Glassell). 



Specimens in the Hancock collections are from San Pedro Nolasco 

 Island, Angel de la Guardia Island, and San Ignacio Bay, Sinaloa, Gulf 

 of California, Mexico. The list of stations is as follows : 



544-36 4 708-37 1 1054-40 1 1084-40 1 



546-36 2 735-37 1 1055-40 3 1725-49 1 



549-36 1 742-37 14 1080-40 5 1726-49 16 



The bathymetric range was from 30 to 110 fathoms. 



Remarks: The carcinoecium is usually a gastropod shell completely 

 overgrown with hydrocoral as in P. varians. 



Pylopagurus longimanus Faxon 



1893 Pylopagurus longimanus Faxon, Bull. Mus. Comp. Zool. 24 p. 



168. 

 1895 Pylopagurus longimanus Faxon, Mem. Mus. Comp. Zool. 18 p. 

 61, PI. 12, figs. 1-le. 



Type : Five male syntypes in the Museum of Comparative Zoology, 

 Harvard University, from Cocos Island, Costa Rica, Albatross station 

 number 3368, in 66 fathoms (Faxon 1895). 



Description: Chelipeds dissimilar and unequal, the right much 

 larger, longer than entire body in older specimens; merus compressed, 

 lateral surface smooth, polished, lower and medial surfaces granulate, 

 dorsal surface with slightly larger granules; carpus equaling combined 

 length of all three preceding segments, longitudinally convex dorsal 

 surface with pointed granules between well defined lateral margins of 

 larger teeth; hand slightly longer than carpus, irregularly oval, small 

 denticles along entire margin of opercular surface, posterior margin 

 falling just short of carpus, basal angle quite small; entire surface of 



