THE GEAPSOID CRABS OF AMERICA. 



137 



PIN NIX A LONGIPES (Lockington). 



Tubicola longipes LOCKINGTON, Proc. California Acad. Sci., vol. 7, 1876 

 (1877), p. 55 [1] (type-locality, Tomales Bay, California, in tube of 

 annelid; type not extant). 



Pinnixa lonyipcs LOCKINGTON, Proc. California Acad. Sci., vol. 7, 1876 

 (1S77), p. 15G [12]. STREETS and KINCSLEY, Bull. Essex Inst., vol. 9, 

 1877, p. 107. HOLMES, Proc. California Acad. Sci., ser. 2, vol. 4, 1894, 

 p. 573, pi. 20, figs. 19 and 20; Occas. Papers California Acad. Sci., vol. 

 7, 1900, p. 92. RATHUUN, Harriman Alaska Exped., vol. 10, 1904, p. 

 1SS. WEYMOUTH, Leland Stanford Jr. Univ. Publ., Univ. Ser. No. 3, 

 1910, p. 58, text-fig. 6 (part; not 2 young specimens from Monterey 

 Bay). 



Diagnosis. Carapace nearly three times as wide as long. Third 

 leg vastly larger than the others; fourth leg not reaching beyond 

 merus of third. 



Fio. 80. PINNIXA LONGIPES, COTYPE, GENERAL OUTLINE, ENLAUGED. (AFTER HOLMES.) 



Description. Carapace more than 2 times as wide as long, some- 

 what flattened above, a depression behind the gastric region. A 

 transverse groove just behind margin of front. 



Chelipeds small, short, hairy; chelae ovate-oblong, distally taper- 

 ing, upper margin convex, lower margin 

 nearly straight, distally granulate; fin- 

 gers subequal, subacute, fitting close to- 

 gether, a subbasal tooth on dactylus, a 

 median tooth on thumb, and a subtermi- 

 nal notch into which the point of the 

 dactylus fits. 



First two legs slender and similar, 

 with slender dactyli, the first leg the 

 smaller. Third leg enormously devel- 



FIO. 81.-PIXXIXA Losers, co- P ed > longer than width of carapace, 

 Tvi-E, OOTEK UAXILLH-KD, EN- merus thick, flat, and with a kind of 



flange on posterior margin; dactyl short, 



thick, curved, and shorter than the tapering propoclus. Fourth leg 

 shortest of all, not reaching beyond merus of third, broad, fringed 

 with long hair, dactylus less curved than that of third leg and 

 shorter than propodus. 



