464 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Martinique; specimens in Paris Museum. 



Barbados: Barbados- Antigua Expedition, State University of Iowa, 

 1918: Okra Reef; May 13; 2 males, 2 females (Mus. S. U. I.). One 

 male S. of station 19, off Needham Point; 84 fathoms; rky.; station 20; 

 1 male (Mus. S. U. I.). Barbados: May 15, 3 males, 7 females (1 

 ovigerous), 2 young (Mus. S. U. I.); in coral heads, 1 male (Mus. 

 S. U. I.), 2 males, 3 females (57992). 



CURACAO.— 1884; Albatross; 1 female (17815). 



Genus XANTHIAS Rathbun 



Xanthodes Dana, Proc. Acad. Nat. Sci. Philadelphia, vol. 6, May, 1852, p. 73; 



type, A', granosomanus Dana, 1852 = Xantho lamarckii Milne Edwards, 1834. 



Name preoccupied by Gu6nee, Jan., 1852, for a genus of Lepidoptera. 

 Xanihias Rathbun (part), Proc. Biol. Soc. Washington, vol. 11, 1897, p. 165; 



substituted for Xanthodes. — Odhner, Goteborg's K. Vet. Handl., Fjarde 



Foljden, vol. 29, No. 1, 1925, p. 84. 



Carapace thick, somewhat depressed posteriorly, inclined down- 

 ward anteriorly, moderately broad, suboval, regions delimited and to 

 a certain extent areolated in anterior two-thirds. Fronto-orbital 

 border half or more than half greatest width of carapace; front 

 strongly produced, convex, bilobed, outer angles not set off from 

 orbital border by an emargination. Antero-lateral margin cut into 

 four lobes or teeth besides the orbital angle. The three grooves of the 

 orbital margin either fairly distinct or quite indistinct. Basal anten- 

 nal article broad and very short; the flagellum, about as long as the 

 greatest width of the orbit, is lodged in the orbital hiatus. 



Chelipeds equal or nearly so in both sexes; hands stout; fingers 

 slender, little curved, tips acute. Legs stoutish, usually more or less 

 hairy and granulate or rough along upper border. Abdomen of male 

 with third to fifth segments entirely or partially fused. 



As restricted by Odhner this genus inhabits chiefly the Indo-Pacific 

 region. Only one American species belongs here, 



XANTHIAS INORNATUS (Rathbun), new combination 



Plate 187 



Adaea inornata Rathbun, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 583, pi. 42, 



fig. 3 (type-locality, off Cape St. Roque, Brazil, 20 fathoms, station 2758 



[Albatross]; type, Cat. No. 21579, U. S. N. M.). 

 Xanthias vestitus Rathbun, Proc. Biol. Soc. Washington, vol. 35, 1922, p. 103 



(type-locality, Spanish Harbor, Curagao; type in Amsterdam Museum) ; 



Bijdragen tot de Dierkunde, Amsterdam, vol. 23, 1924, p. 15, pi. 3, figs. 4-6. 



Diagnosis. — Size small. Covered with short felt. Carapace gran- 

 ulate near margins. Wrist and hand granulate. Fingers light 

 colored. 



Description. — Entire animal except extremities of fingers covered 

 with a very short feltlike pubescence which conceals granules and 

 other inequalities and obscures the antero-lateral teeth. Carapace 



I 



