THE GRAPSOID CRABS OF AMERICA, 97 



PINNOTHEBES TAYLORI. new cpecies. 



Plate 21, figs. 5-«. 



Type-locality. — Ucluelet, British Columbia; in transparent tuni- 

 cate; Geological Survey of Canada; female holotype (40397). 



Diagnosis. — Carapace in both sexes of subequal length and width. 

 Chela inflated. Fourth leg shorter than the others which are nearly 

 equal: dactyli slender, curved, similar; in male a fringe of long hair 

 on legs 2 and 3. Male hairy all over. 



Description of female. — Of small size. Carapace thin, but fairly 

 firm, of equal length and width, very convex, subhexagonal, the 

 side-margins parallel behind antero-lateral angles, the postlateral 

 portion of the branchial region forming a steep facet strongly in- 

 clined to remainder of dorsal surface ; cardiac region surmounted by 

 two small tubercles side by side ; cardiac and posterior gastric region 

 defined by shallow grooves; posterior 

 margin convex. In ventral view the 

 posterior line of the antennular cavi- 

 ties, of the minute, basal segment of the 

 antennae and the lower border of the 

 orbit form a single transverse line. 



Buccal cavity broadly hemispheri- 

 cal ; penult segment of outer maxilliped 

 broadly obliquely-truncate: last seg- fiq. 49. — pinnotheues taylobi. 

 ment small, attached near distal end of endognath of outer maxilliped 



,.' T ... OF MALE (40397), X 40. 



the preceding and not overreaching it. 



Chelipeds hairy inside; manus much inflated, upper and lower 

 margins convex; fingers equally stout, tips strongly hooked, a small 

 tooth near base of dactyl, a larger tooth or lobe near middle of im- 

 movable finger. The chelipeds are shaped much as in pugettensis 

 hut are much smaller, specimens of subequal size compared. 



Of the ambulatory legs, 1 and 4 are subequal, shorter than 2 and 

 3, which are subequal; propodi convex on anterior and straight on 

 posterior margin; dactyli shorter than propodi, curved and with 

 slender tips, that of first leg shorter then the others which are sub- 

 equal to one another ; propodi and dactyli hairy. 



Description of male. — A little smaller than female and hairy all 

 over; hair thick and matted on dorsal surface of carapace but not on 

 oblique branchial facets or on ventral surface. Carapace widest at 

 antero-lateral angles, the side margins converging slightly poster- 

 iorly ; cardiac region defined by a furrow. 



Chelipeds larger than in female and clothed with long hair ; manus 

 more inflated than in female. The legs of the first three pairs are 

 6586.3—17-^ — 7 



