THE GRAPSOID CRABS OP AMERICA. 



83 



Color. Outer surface of palm brownish with light-colored reticu- 

 lations. 



Measurements. Female holotype, length of carapace 10, width 

 of same 10.5; length of first leg 9.5, of last leg 10.5 mm. (Holmes). 



Habitat. Live in tunicates. 



Range. Departure Bay, British Columbia; Puget Sound. 



Material examined. Has all been dried. Departure Bay, British 

 Columbia: George W. Taylor, collector; two females, larger one in 

 tunicate, smaller one free (39131). 1908; Geological Survey of 

 Canada, donor; two females, in hairy tunicate (40396). 



PINNOTHERES NUDUS Holmes. 



Pinnotheres nudus HOLMES, Proc. California Acad. Sci., ser. 2, vol. 4, 1S94, 

 p. 5G3, pi. 20, figs. 1-5 (type-locality, Santa Cruz; type destroyed in 

 San Francisco fire) ; Occas. Papers California Acad. Sci., vol. 7, 1900. 

 p. 86. Not P. nudus Weymouth, Leland Stanford Jr. Univ. Publ., 

 Univ. Ser. No. 4, 1910, p. 53, text-fig. 1, except synonymy. 



Diagnosis. Carapace subquadrate with corners rounded ; no in- 

 dication of regions. Chela widest immediately behind fingers. 

 Dactyli of legs nearly straight, longest and most slender in fourth 

 pair. 



Description. Carapace a little broader than long, subquadrate 

 with corners rounded, the anterior half nearly same shape and size 



a 



FIG. 40. PINNOTHERES NDDUS, FEMALE HOLOTYPE. a, CARAPACE, SLIGHTLY ENLARGED; 



ft, ABDOMEN ; C, OUTEK MAXILLIFED J d, LEFT CHELII'ED ; C, FIRST LEO. (AFTER HOLMES.) 



as posterior half; surface curving downward toward all margins, 

 smooth and naked; regions not defined. Front not protruding. 

 Orbits ovate. 



Chelipeds smooth, hands rather thick, widest immediately behind 

 articulation of dactyl; fingers nearly or quite as long as palm, sub- 

 conical, not conspicuously dentate on inner margins, partly covered 

 by a very short, dense pubescence. 



Three anterior legs subequal, fourth smaller ; all are smooth, little 

 compressed, and have acute, nearly straight tarsi, those of fourth 

 pair being relatively longer and more slender than those preceding. 



