172 BULLETIN 129, UNITED STATES NATIONAL MUSEUM 



California: Dr. T. B. Wilson; 1 small male (Mus. Phila. Acad.); 

 "^E. sayanus White." E. Samuels; 1 male (53046); from Boston 

 Soc. Nat. Hist. 



LOWER CALIFORNIA, MEXICO 



Rosalia Bay; August 22, 1896; A. W. Anthony; 1 young (19519). 



PUGETTIA GRACILIS Dana 



GRACEFUL KELP CRAB 



Plate 58 



Pugettia gracilis Dana, Amer. Journ. Sci., ser. 2, vol. II, 1851, p. 268 (type- 

 locality, Puget Sound; cotypes, Cat. No. 1237, M. C. Z.); U. S. Expl. 

 Exped., vol. 13, Crust., pt. 1, 1852, pi. 4, fig. 3a-c. — Stimpson, Boston 

 Journ. Nat. Hist., vol. 6, 1857, p. 456. — Lockington, Proc. California 

 Acad. Sci., vol. 7, 1876 (1877), p. 76 [14]. — Miers, Journ. Linn. Soc. 

 London, vol. 14, 1879, p. 650; Challenger Kept., Zool., vol. 17, 1886, p. 

 40. — Rathbun, Proc. U. S. Nat. Mus., vol. 17, 1894, p. 69; Harriman 

 Alaska Exped., vol. 10, 1904, p. 173. — Holmes, Occas. Papers California 

 Acad. Sci., vol. 7, 1900, p. 25.— Lenz, Zool. Jahrb., vol. 14, Syst., 1901, 

 p. 452.— Weymouth, Stanford Univ. Publ., Univ. Ser., No. 4, 1910, 

 p. 29, pi. 4, fig. 10.— Way, Puget Sd. Mar. Sta. Publ., vol. 1, 1917, p. 370, 

 pi. 82, fig. 21.— ScHMiTT, Univ. California Publ. Zool., vol. 23, 1921, p. 

 206, pi. 33, fig. 7, text-fig. 128. 



Pugettia lordii Spence Bate, Proc. Zool. Soc. London, 1864, p. 662 (type- 

 locality, Esquimau Harbour, B. C; type in Brit. Mus.); Lord's Nat. in 

 Brit. Columbia, vol. 1, 1866, p. 265. 



Pugettia quadridens, var. gracilis Ortmann, Zool. Jahrb., vol. 7, Syst., 1893, 

 p. 43. 



Diagnosis. — Hepatic expansion very wide, the triangular postocular 

 tooth and first antero-lateral tooth united by a leaflike expansion of 

 the carapace. Merus of chelipeds with a prominent, irregularly dentate 

 carina on the upper side; carpus cristate. Ambulatory legs with 

 merus and propodus more or less carinate above. Ischium of max- 

 illipeds with a longitudinal groove, exognath also grooved. 



Description. — Carapace lyrate to broadly ovate, tuberculate; four 

 median tubercles, of which two are gastric (the anterior one small), 

 one cardiac and one intestinal; two large branchial tubercles, and 

 one protogastric tubercle. A tuft of setae proceeds from each tubercle; 

 from the protogastric pair two rows of curled setae run forward and 

 inward; upper surface and margins of rostrum, as also the sub- 

 branchial regions setiferous. Lateral projections broad, the anterior 

 one large and winglike, its antero-external angle advanced in a tooth, 

 its posterior margin nearly longitudinal; the posterior projection is 

 smaller, posterior end spiniform, anterior end lobiform. Postorbital 

 tooth broad, separated from the broad supraocular eave by a narrow 

 fissure. Outer margins of rostral horns subparallel, convex near tips; 

 inner margins concave. 



