1921 ] Schmitt: The Marine Decapod Crustacea of California 257 



ii. Chela with immovable finger not deflexed. 



a. Immovable finger straight or nearly so; lower margin of 



palm not convex. Carapace about twice as wide as 

 long. (Known only from San Francisco Bay.) 



franciscana, p. 263. 



b. Immovable finger curved upward distally; lower margin 



of palm convex. 

 i. Carapace more than twice as wide as long; male not 

 known. (Known only from off Catalina Island.) 



hiatus, p. 265. 

 ii. Carapace less than twice as wide as long. 



* Carapace laterally tapering, about one and three- 

 fourths times, more or less, as wide as long. 

 Sides of male abdomen convex. (Not known 

 south of San Francisco Bay.) 



schmitti, p. 2C4. 



** Carapace laterally subtruneate; about one and two- 

 thirds times as wide as long. Sides of male abdo- 

 men more or less straight, not convex, first seg- 

 ment very wide at base. (Known only from 



Monterey Bay.) nn „ 



weymouthi, p. 266. 



Pinnixa longipes (Lockington) 



Tubicola longipes Lockington, Proe. Calif. Acad. Sci., 7, 55, 1876 (1877). 



Pinnixa longipes Holmes, Proc. Calif. Acad. Sci., (2), 4, 573, pi. 20, 

 figs. 19-20, 1894 (1895); Occas. Papers Calif. Acad. Sci., 7, 92, 1900; 

 Eathbun, H. A. E., 10, 188, 1904; Weymouth, Stanford Univ. Publ., 

 Univ. Ser., no. 4, 58, text fig. 6, 1910; Eathbun, Bull. U. S. Nat. Mus., 

 97, 137, figs. 80, 81, 1918; Nininger, Jour. Ent. Zool., Pomona Coll., 10, 

 41, fig. 31, 1918. 



Fig. 152. Pinnixa longipes (after Holmes). 



Characters. — Carapace considerably more than twice as wide as long, some- 

 what flattened above, and furnished with a transverse depression behind the gastric 

 area. Chelipeds small, short, hairy; chelae stout, oblong, compressed. First two 

 pairs of ambulatory legs slender, and furnished with slender, nearly straight dac- 

 tyls which are about equal to the propodi in length; second pair slightly larger 

 than the first; third pair of ambulatory legs enormously developed; merus with 

 a kind of flange on the posterior margin, dactyl stout, somewhat curved, much 



