86 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 24 



shore; February 10, 1933; collected during Allan Hancock Pacific 

 Expedition of 1933 at Velero III station 68-33. Paratypes: 178 speci- 

 mens from the same and 16 other stations (see Table 24). 



Diagnosis: Carapace subquadrate, its margins subparallel posterior 

 to epibranchial angle, nearly smooth ; no epibranchial spine ; front 

 narrow, triangular; carpus one and a half to two times as long as wide, 

 proximal two-thirds of anterior margin with a strong lobe, distal third 

 subparallel with posterior margin; manus with a low, slightly rounded 

 crest on outer margin ; fingers blunt, sometimes short and stubby ; 

 merus of walking legs unarmed, that of leg 3 inflated. 



Description: Carapace about as broad as long, subquadrate, lateral 

 margins nearly parallel behind epibranchial angle; nearly smooth, cov- 

 ered anteriorly with fine granules and posteriorly with light plications; 

 grooves marking the various regions distinct. Frontal region deflexed ; 

 front strongly produced, narrow, triangular, with a deep median groove 

 extending to between protogastric lobes; no supraocular spine; inner 

 orbital angle usually not produced, but in some specimens slightly pro- 

 duced, making the front appear sinuously triangular or, in frontal view, 

 somewhat trilobate. Orbits rather shallow; outer orbital angle produced 

 into a small, narrow tooth. No epibranchial spine. Carapace naked. 



First movable segment of antenna faintly granular, with a low crest 

 on anterior margin; second and third faintly granular, without an- 

 terior projections; flagellum with short, close-set hairs, many long hairs 

 interspersed with them. Outer maxillipeds smooth or lightly punctate. 



Chelipeds naked, covered with small flattened granules on dorsal 

 surface, smooth ventrally. Merus with a small granular lobe on anterior 

 margin. Carpus one and a half to two times as long as wide, the gran- 

 ules on its surface often a little larger than those on rest of cheliped; 

 a strong lobe occupying about proximal two-thirds of anterior margin, 

 anterior and posterior margins converging to this point, subparallel in 

 distal third; a broad, shallow longitudinal groove on dorsal surface 

 near posterior margin, defining a low marginal crest, the latter scarcely 

 produced distally; anterior to this groove a faint swelling or crest, often 

 obsolescent. Manus highest near inner side, outer edge thin but slightly 

 rounded into a low, smooth crest extending onto pollex. Fingers blunt, 

 curved at tips, cutting edges without teeth ; dactylus a little shorter 

 than pollex; fingers usually meeting for entire length, but in some 

 specimens short, stubby, and gaping in one cheliped. Gape with a short, 

 thick, fine pubescence extending nearly to tips of fingers. 



