162 



BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



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Measurements. Female, holotype, length 

 of carapace 5.7, width of same 11, length of 

 third leg about 12 mm. 



Range. San Francisco Bay, California, 

 1-15 fathoms. 



Material examined. See table. 



PINNIXA SCHMITTV new species. 



Plate 35, figs. 6, 7, and 9. 



Pinnixa occidentalis RATHBUN, Harriman 

 Alaska Exped., vol. 10, 1904, p. 187 (part : 

 specimens from Cape Fox). 



Type - locality. Lower San Francisco 

 Bay, California; 9 to 11 fathoms; station 

 5723; Albatross; female holotype, Cat. No. 

 48441, U.S.N.M. 



Diagnosis. Palm stout, with convex mar- 

 gins. Thumb horizontal, long in female, 

 short in typical male. Dactyli of legs 

 nearly straight. Upper margin of leg 

 joints moderately curved. 



Description of female holotype. Like 

 franciscana, but carapace more oblong, as 

 sides are less pointed and antero-lateral 

 marginate crest is more prominent. Car- 

 diac ridge obsolescent, broad and smoothly 

 rounded; from a point behind each ex- 

 tremity, a smooth ridge curves forward to 

 the anterior branchial angle, widening dis- 

 tally. Palm swollen, upper and lower mar- 

 gins convex, the latter becoming slightly 

 concave under base of finger, which last in- 

 clines upward distally; outer and upper 

 surfaces granulate, granules thinnest in 

 middle, forming a line near lower edge, 

 especially of finger, but very different from 

 sharp, raised line in franciscana; prehensile 

 edges of fingers meeting, sinuous. Relative 

 lengths of legs much as in franciscana, but 

 merus of third leg less dilated, twice as long 

 as wide, margins granulate, as also of the 

 propodus. 



1 Named for Mr. Waldo L. Schmitt, scientific assistant 

 on the Albatross, 1911-14. 



