CALIFORNIA STALK-EYED CRUSTACEA. 91 



Pinnixa tubicola Holmes. 



Pinnixa tubicola HOLMES, Proc. Cal. Acad. Sci., 2d Ser., Vol. IV, 1895, p. 

 569, PI. XX, figs. 17 and 18. 



General form subcylindrical. Carapace about two and one-half times- 

 as long as wide, strongly curved downward towards the anterior margin 

 and at the sides. A shallow, transverse depression behind the gastric 

 area, behind which is a convex (not crested) transverse intumescence, 

 from which the carapace curves sharply downwards towards the broad, 

 slightly concave posterior margin. Front short, deflexed, not projecting 

 beyond the general contour of the carapace. Outer portion of the antero- 

 lateral margins defined by a ridge. The last joint of the palp of the 

 maxillipeds is spatulate and joined near the base of, and extending con- 

 siderably beyond the preceding one. Chelipeds rather small; hand oblong, 

 longer than the preceding joints combined; fingers hooked at the tips, 

 their inner margins meeting when closed. First pair of ambulatory legs 

 slender, with slender dactyls which about equal the length of the propodi;. 

 second pair much longer and stouter than the first, the dactyls relatively 

 stouter than in the first pair and a little shorter than the propodi; third 

 pair stouter and a little longer than the second and furnished with shorter 

 and stouter dactyls, which are markedly shorter than the propodi; fourth 

 pair similar to but much shorter than the third. 



Length of carapace, 4 mm.; width, 10 mm. 



Puget Sound! Trinidad! Cape Mendocino! Bodega 

 Bay! San Pedro! San Diego! 



Pinnixa littoralis Holmes. 



Pinnixa littoralis HOLMES, Proc. Cal. Acad. Sci., 2d Ser., Vol. IV, 1895 r 

 p. 571, PI. XX, figs. 14-16. 



Carapace naked, flattened above; a transverse depression behind the 

 median region followed by a transverse intumescence. The front is not 

 strongly depressed and projects beyond the general outline of the cara- 

 pace; it is anteriorly truncated and furnished with a median groove. 

 Maxillipeds similar to those of tubicola; the terminal joint extends only a 

 short distance beyond the preceding one. Chelipeds large, smooth; hand 

 large, compressed, oblong, but widening slightly distally; pollex short, 

 directed obliquely downwards and furnished at the tip with a notch, into 

 which the point of the dactyl closes; dactyl curved, and when closed 

 against the pollex, a large rounded space is left between them. Ambula- 

 tory legs almost entirely naked, more slender than in tubicola, first pair 

 but little shorter than the second, which is but little shorter than the 



