122 Bulletin Vanderbilt Marine Miiseum, Vol. VI 



its widest point ; the dactyl is 0.5 mm, long, very curved, tapered, 

 unispinose. 



The fourth and fifth pairs of legs are similar to the third pair 

 but are successively shorter by about the length of a dactyl. 



References: Athanas djihoutensis^ Coutiere, H., Bull. Mus. 

 d'Hist. Nat. Paris, t. Ill, 1897, art. 6, p. 233 ; Ann. Sci. Nat., 

 ser. 8E, t. IX, 1899, pp. 62, 177, fig. 4 on p. 207 ; Fauna and 

 Geogr. Maldive and Laccadive Arch., vol. II, pt. 4, 1905, art. 6, 

 p. 856, fig. 129. — NOBILI, G., Mem. Torino R. Ace. Sci., ser. 2, 

 t. LVII, 1907, p. 353. 



Athanas sulcatipes, Borradaile, L. A., Proc. Zool. Soc. London, 

 1907, p. 1011, pi. 65, fig. 9. 



Athanas gracilis new species 



Plate 32 



Type : The type and only specimen known was taken in coral 

 at Teviatoa Reef, Raiatea Island, Society Islands, August 21, 1931, 

 by the "Alva." 



Distribution : Restricted to the type locality. 



Technical description: Carapace about 15 mm. long, glab- 

 rous, very finely punctate, with the rostrum, viewed dorsally, a 

 proximally wide triangle, only microscopically separated from 

 the supraorbital tooth and with the rostral apex acuminate, pro- 

 jecting beyond the margin as far as the distal margin of the sec- 

 ond peduncular article of the antennulae ; viewed in profile, the 

 rostrum is seen to be concave ventrally with the extreme apex 

 tapered from both dorsal and ventral-lateral margins to a point. 

 The supracorneal spine is rudimentary. The infracorneal spine is 

 represented by the distinct, acuminate apex of the closely ap- 

 pressed inferior corneal angle of the frontal margin of carapace. 

 The spine apex is about midway the longitudinal diameter of the 

 black cornea and is distinctly weaker than that figured for Athanas 

 nitescens Leach, by Heller and Bate, respectively, and the frontal 

 margin of A. gracilis between the infracorneal spine and antenna! 

 angle is scarcely concave at all, while that of A. nitescens is fig- 

 ured as decidedly concave ; also the antennal angle is bluntly trun- 

 cated, not pointed. The small, supracorneal tooth is closely ap- 

 pressed to the orbital border, the apex reaching almost midway 



