346 



BULLETIN Q1, UKITED STATES NATIONAL MUSEUM. 



Fic. 157. — Cauuisoma cuas- 



SUM, AI!DO.ME.N OP MALE 

 (4SS09), NATUKAL SIZE. 



Cristobal, Panama; 



stout, straight process, vphicli is soft and flexible, and clothed at the 

 extremity with hair. 



The legs are conspicuously hairy. 



Measurements. — Male (40501), length of 

 carapace 100, Avidth of same 128, length of 

 propodus of larger chela 142, height of same 

 72 mm. 



Range. — From San Jose and La Paz, 

 Lower California, to Peru. Alcock gives 

 " Chili " in the distribution of the genus 

 Cardisoma. If this be correct, it is probably 

 C. crassum that is found there. 

 Material examined. — 

 San Jose, Lower California (M. C. Z.). 

 La Paz, Lower California; L. Belding; 

 1 male, 1 female (4G5S). 



Cape St. Lucas, Lower California ; J. Xan- 

 tus; 2 males (2137). 



Acapulco, Mexico (M. C. Z.). 

 Panama Canal Zone; July 27, 1915; J. 

 Zetek; 1 male (48809). 



Mar. 13, 1912; Meek & Hildebrand, Smith- 

 sonian Biol. Survey of the Panama Canal; 1 female (4GG92). 



Darien; Dr. Enrico Festa, collector; received from Turin Mus.; 

 1 male (20072). 



Mouth of Eiver Tumbes, Peru; Feb. 12; R. E. Coker; received 

 from Peruvian Government; 1 male (40501). 



Genus UCIDES Rathbun. 



Vca Latreille, Nouv. Diet. Hist. Nat., vol. 35, 1S19. p. 9G; type, V. uca 



(Linnaeus, 17G7) =cor(/a/a (Linnaeus, 17G3). 

 Ucidcs Rathbun, Proc. Biol. Soc. Washington, vol. 11, June 9, 1897, p. 154; 



type, V. conlatus (Linnaeus). 

 (Ediplcnra Oktmann, Zool. .Talirb., Syst., vol. 10, 1897, p. 334; type, O. cor- 



data (Linnaeus). 



Carapace shaped much as in Cardisoma. Pterygostomian regions 

 for the most part naked. Fronto-orbital border somewhat more 

 than half, and the narrow, convex, deflexed front about one-sixth, the 

 greatest breadth of tlie carapace. Orbits deep, the outer angle in- 

 conspicuous, the inner angle remote from the front but not denti- 

 form. Orbits not very much larger than the eyes. 



Antennules oblique, partly hidden by the front; interantennular}' 

 septum rather narrow, triangular. The basal antennal joint is 

 longer than broad, and lies obliquely across the orbital hiatus; fla- 

 gellum short. 



