1 921 1 Schmitt: The Marine Decapod Crustacea of California 265 



of the preceding species, is about halfway between Angel Island and 

 the Southampton Shoal light, where three of the hauls lie in close 

 proximity to one another (D 5706, 5718, 5825). At one of these 

 (D 5825) as well as at its only upper (D 5715) and lower bay (D 

 5723) stations, it was taken in company with P. franciscana and like 

 it was found on bottom of the same general character ; and it appar- 

 ently has the same habits, for at two of the stations numerous worm 

 tubes were brought up. The annual mean temperature and salinities, 

 which range respectively from 12.7° to 13.3° C, and from 25.3 to 29.6, 

 correspond very closely to those given for P. franciscana. 



Pinnixa hiatus Eathbun 



Plate 43, figures 1, 2, 3, and 4 



Pinnixa hiatus Eathbun, Bull. U. S. Nat. Mus., 97, 164, text fig. 102, pi. 36, 

 figs. 1-4, 1918. 



Original Description of Female. — Carapace very wide, narrowed at sides, 

 anterolateral margin arcuate without a definite angle and marked by a raised 

 and finely granulate edge up to hepatic region; posterior margin very long and 

 straight ; front advanced, widely emarginate in dorsal view. Surface smooth, 

 sparingly punctate, a groove behind gastric region. Subhepatic region prom- 

 inent. Orbits oval, filled by eyes. 



Palm suboblong, upper margin convex, lower margin of palm and thumb 

 sinuous, a granulated ridge on distal half just above lower edge. A correspond- 

 ing ridge on dactylus. Thumb definitely shorter than dactylus and curving up 

 toward it, extremity obliquely notched by means of a tuberculiform tooth. 

 Dactylus curved, a tooth just behind middle; a wide gape when fingers are 

 closed. 



Merus of first [ambulatory] leg slender, of other legs narrowed at distal 

 end; carpus of all legs longer than propodus; propodus tapering distally, but 

 wider at end than adjoining end of dactyl; dactyls styliform, more slender in 

 first and second pairs; in third pair, the anterior edge of merus and posterior 

 edge of propodus is finely saw-toothed, posterior edge of merus more coarsely 

 granulate, anterior edge of dactylus spinulous. Posterior margin of merus of 

 second leg finely granulate. Posterior margin of third leg and both margins 

 of last leg fringed with hair (Eathbun). 



Dimensions. — Type, female: length of carapace 3.6 mm., width 7.7 mm. 



Type Locality. — Off Santa Catalina Island, California; 50 fathoms; known 

 only from a single female specimen. 



Pinnixa tubicola Holmes 



Plate 43, figures 5, 6, 7, and 8 



Pinnixa tubicola Holmes, Proc. Calif. Acad. Sci., (2), 4, 569, pi. 20, figs. 

 17-18, 1894 (1895) ; Occas. Papers Calif. Acad. Sci., 7, 91, 1900; Eath- 

 bun, H. A. E., 10, 187, 1904; Weymouth, Stanford Univ. Publ., Univ. 

 Ser., no. 4, 57, text fig. 4, 1910; Way, Puget Sd. Mar. Sta. Publ., 1, 

 361, fig. 13, 1917; Eathbun, Bull. U. S. Nat. Mus., 97, 165, fig. 103, 

 pi. 36, figs. 5-8, 1918. 

 Characters. — General form subcylindrical. Carapace about two and one-half 

 times as wide as long in the female, and twice as broad as long in the male; 

 a shallow, transverse depression behind the gastric region which is a convex 



