1921 3 Schmitt: The Marine Decapod Crustacea of California 191 



end; superior crest more or less hairy, armed with six teeth; there is a granulated 

 ridge on the lower side of hand; immovable finger short, subtriangular, flattened, 

 depressed; outer margin of movable finger prominent, granulated, when closed is 

 at right angles to the palm. 



Dimensions. — Type: length 76.2 mm.; of specimen examined by Holmes: 

 length of carapace 41 mm., width between tips of lateral spines 79 mm., length 

 of lateral spine 12 mm. 



Color. — Beddish (Milne Edwards). 



Type Locality. — Coast of Chile. 



Distribution. — From the Farallon Islands, California, to Chile; 26 to 218 

 fathoms. 



Subtribe BRACHYGNATHA 



Key to the Supeefamilies of the Brachygnatha 



I. Fore part of body narrow, usually forming a distinct pointed or spined 



rostrum; carapace more or less triangular, branchial region inflated, hepatic 



small. Orbits usually incomplete. 



Oxyrhyncha, p. 191. 



II. Fore part of body broad; rostrum usually reduced or wanting; carapace 



usually wide, oval, round or square, never with hepatic region greatly 



reduced. Orbits nearly always well enclosed. 



Brachyrhyncha; p. 216. 



Super-family Oxyrhyncha 



Key to the California Families of the Oxyrhyncha 



I. Chelipeds rarely much greater than other legs, very mobile. Basal joint of 



antennae well developed, usually fused with epistome and often with the 



front. Orbits usually more or less incomplete. 



InacJiidae, p. 192. 



II. Chelipeds very much longer and heavier than other legs, not especially mobile. 



Basal joint of antennae small, short, and not fused with epistome or front. 



Orbits well formed, complete. (Not known north of the Gulf of the 



Farallones.) 



Parthenopidae, p. 191. 



Family Parthenopidae 



Basal joint of antennae (more correctly the coalesced second and third joints) 

 small and short, not fused with the epistome or front, imbedded with the next 

 joint in the narrow hiatus between the front and the inner suborbital angle; infra- 

 ocular space is mainly occupied by the lower wall of the orbit. Orbits well formed, 

 complete. Chelipeds much longer and heavier than other legs, not especially 

 mobile. 



Genus Heterocrypta Stimpson 



Carapace triangular, transverse, lateral margins greatly produced and con- 

 cealing the ambulatory legs; a conspicuous depression separating gastric from 

 cardiac and branchial regions; rostrum simple; pterygostomian region with a 

 strongly marked ridge. Chelipeds greatly developed, trigonal. 



