THE SPIDER CRABS OF AMERICA 167 



Genus PUGETTIA Dana 



Pugettia Dana, Amer. Journ. Sci., ser. 2, vol. 11, 1851, pp. 268 and 433; 

 type, P. gracilis Dana; U. S. Expl. Exped., vol. 13, Crust., pt. 1, 1852, 

 pp. 84 and 116; pt. 2, 1853, p. 1421. — Holmes, Occas. Papers California 

 Acad. Sci., vol. 7, 1900, p. 24.— Stimpson, Smithson. Misc. Coll., vol. 49, 

 1907, p. 24.— ScHMiTT, Univ. California Publ. Zool., vol. 23, 1921, p. 205. 



Epialtus of authors (part). 



Carapace suboblong or ovate-oblong, tuberculate or uneven, with 

 two prominent, angular, lateral projections, separated by a concave 

 interspace. Supra-orbital eave well developed, advanced to form a 

 preocular tooth; postorbital tooth commonly formed by the anterior 

 angle of the hepatic expansion. Rostrum bifid. Antennae visible 

 at sides of rostrum, basal article rather broad, next two articles 

 flattened. Merus of maxillipeds broad, antero-extemal angle dilated, 

 antero-intcrnal angle notched for the insertion of the palpus. Cheli- 

 peds of male well developed, merus trigonal, palm dilated and com- 

 pressed, fingers usually gaping at base. Ambulatory legs sub- 

 cylindrical, the penultimate article not dilated and compressed. 

 Abdomen composed of seven segments in both sexes. 



Inhabits both sides of the North Pacific Ocean, also the East 

 Indian Islands and Australia. 



KEY TO THE AMERICAN 3PECIES OF THE GENUS PUGETTIA 



A'. No small spine between the postocular tooth or lobe and the larger hepatic 

 projection. 

 B'. Postorbital projection a triangular tooth. 



C. Hepatic expansion very wide (postorbital tooth and first antero-lateral 



tooth united by a leaflike expansion of the carapace). 



D'. Carapace constricted behind the hepatic expansions.. -gracilis, p. 172. 



D^. Carapace scarcely constricted behind the hepatic expansions, the 



outer (or posterior) margins of these expansions being subparallel. 



producta, p. 167. 

 C^. Hepatic expansion narrow, transverse (postorbital tooth and first 



antero-lateral tooth acute and distinct) richii, p. 176. 



B^. Postorbital projection an oval, obtuse lobe dalU, p. 178. 



A^. A small spine between the postocular tooth or spine and the larger hepatic 

 proj ection venetiae, p. 180. 



PUGETTIA PRODUCTA (Randall) 



KELP CRAB 



Plates 56 and 57 



Epialtus productus Randall, Journ. Acad. Nat. Sci. Philadelphia, vol. 8, 

 1839 (1840), p. 110 (type-locality. Upper California; type not extant). — 

 GiBBES, Proc. Amer. Assoc. Adv. Sci., 3rd meeting, 1850, p. 173. — Dana, 

 U. S. Expl. Exped., vol. 13, Crust., pt. 1, 1852, p. 133; atlas, 1855, pi. 6, 

 fig. 2a and b. — Stimpson, Proc. Acad. Nat. Sci. Philadelphia, vol. 9, 1857, 

 p. 219; Boston Journ. Nat. Hist., vol. 6, 1857, p. 457 [17].— Lockington, 

 Proc. California Acad. Sci., vol. 7, 1876 (1877), p. 77 [15].— R. Rathbun, 

 Fisheries Industries of U. S., sec. 1, 1884, p. 778, pi. 268.— Newcombe, 



