102 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



Coryrhynchus Kingsley, 1879b, p. 585 (name substituted for Podonema, 



preoccupied). 

 Ericerus Rathbun, 1893b, p. 223; type: E. latimanus Rathbun, 1893, by 



monotypy. 

 Ericerodes Rathbun, 1897, p. 164 (name substituted for Ericerus, pre- 

 occupied). 



Type: The Atlantic Podochela grossipes Stimpson, 1860, type of 

 Podochela Stimpson by subsequent designation of Miers (1879c, p. 643). 

 Description: Carapace depressed, elongate-triangular, strongly pro- 

 duced in front. Gastric region narrow, tumid. Rostrum short, entire, 

 triangular or arcuate. Eyes long, nonretractile, transversely projecting. 

 Basal antennal article narrow, longitudinally sulcate, apex narrow, non- 

 dentate; flagellum slender, bare. Merus of external maxillipeds much 

 shorter than ischium, apices obtuse or produced, internal apex more or 

 less incised, palp joined at summit of merus. Epistome very long. 

 Chelipeds of moderate size, merus curved, margins hairy. Legs very long, 

 subprehensile, often furnished with a more or less cheliform hand. 

 Dactyli of ambulatory legs of the first pair very slender and unhooked, 

 those of the remaining pairs falciform. Sternum of female deeply con- 

 cave, margin elevated, laminate, forming a capsule. First abdominal 

 segment rather large, second, third, and fourth very short; fifth, sixth, 

 and seventh segments coalesced. [Sternum of male either nearly smooth 

 or deeply channeled between segments. Male abdomen with sixth and 

 seventh segments coalesced.] (Stimpson, with additions to include the 

 male sex) 



The genus as characterized above at a time when but three Atlantic 

 species, Podochela grossipes, P. macrodera, and P. riisei, were known, 

 has been broadened by the inclusion of a large number of species, in- 

 dubitably related, among which are recognized forms having the rostrum 

 prolonged into a spine which may equal the postrostral length of the 

 carapace, forms having the basal antennal article convexly ridged, and 

 by one or more species in which the dactyl of the first, as well as of the 

 remainder of the walking legs, is curved and spinulous. The chelipeds 

 of the males of most species are known to become ponderously inflated ; 

 indeed it is possible that this is a trait common to all members of the 

 genus, were material available to show it. A postorbital lobe or granule, 

 which when present is located some distance from the eye, is a constant 

 and useful descriptive feature. 



Since no single character may be relied upon to distinguish one 

 species of Podochela from another, and since specimens examined are all 



