THE GKAPSOID CEABS OF AMERICA. 71 



Bdbitat. — Commensal with oysters. 



Range. — Vera Cruz, Mexico ; Cuba ; Jamaica ? ; Porto Rico. 



Material examined. — 



Vera Cruz, Mexico; P. Geddes, collector; 1 female with ova, co- 

 type (out of 7 in Brit. Mus. ; loaned to U.S.N.M. through the courtesy 

 of Dr. Caiman). 



Cuba; in oysters; Andrea, collector; received from Copenhagen 

 Mus.; 2 females ovig. (23439). 



Sagua la Grande, Santa Clara Province, Cuba; M. S. Roig, coll.; 

 1 female ovig. (49252). 



Near Cabo Rojo, Mayaguez, Porto Rico; in oysters; Jan. 24, 1899; 

 steamer Fish Hawk; 2 females (1 ovig. is holotype of ostrearius) 

 (23767). 



PINNOTHERES POLITUS (Smith). 



Plate 159, fig. 5. 

 Ostracotheres politus Smith, Trans. Connecticut Acad. Arts and Sci., vol. 2, 

 1870, p. 169 (type-locality, Callao, Peru; type iu Peabody Mus. Yale 

 Univ.).— Lenz, Zool. .Tahrb., Suppl., vol. 5, 1902, p. 7.65, pi. 23, figs. 9, 

 9a.— Porter, Revista Chilena Hist. Nat., vol. 13, 1909, p. 249.— Rath- 

 bun, Proc. U. S. Nat. Mus., vol. 38, 1910, p. 545, text-fig. 3 (after Lenz). 



Fig. 33. — Pinnotheres politus, outer maxilliped of female (40448), X 50. 



Diagnosis. — Carapace wide, thin, flat. Last leg very slender, with 

 very long dactylus. Propodus of second and third legs distally ex- 

 panded. 



Description of female. — Carapace thin and yielding, naked, smooth 

 and shining, transversely oblong, a little wider posteriorly than an- 

 teriorly, dorsal surface flat, borders smoothly rounded; a short me- 

 dian sulcus on front, a slight U-shaped one from orbits to middle of 

 carapace. Front arcuate as seen from above, scarcely protuberant; 

 eyes small, partly visible in dorsal view. 



The second joint of the palp of the outer maxilliped is short and 

 broad, the terminal joint is minute and has not hitherto been dis- 

 covered. Because of its presence, the species is placed in Pinnotheres^ 



