44 



BULLETIN 97, UNITED STATES NATIONAL MUSEUM, 



The second segment of the abdomen leaves exposed a large i)iece 

 of the sternum on either side ; third to fifth segments fused. 



In the female there are only two antero-lateral teeth, and the 

 merus of the legs is not spined above but granulous. 



Measurements. — Male holotype, length of carapace, 33.3; width 

 of same, 46.1; fronto-orbital width, 24.7; width of front, 12.9; 

 length of propodus of right cheliped 39; length of merus of third 

 ambulatory leg, 2G.5 mm. 



Range. — Dominica ; Martinique. To 100 fathoms. 



Material examined. — 



Souf riere Bay, Dominica ; 100 fathoms ; A. H. Verrill ; 1 male holo- 

 type (32G90). 



Martinique; 1 male, 2 females (Paris Mus.). 



Genus OEDIPLAX Rathbun, 



CEdiplax RATnnuN, Proc. U. S. Nat Mus., vol. IG, 1893, p. 241; type, O. 

 granulatus Ilatlibun. 



Nearly related to PseiidorhomMla, but more xanthoid in aspect, 

 the antero-lateral margin being longer and the posterior convergence 



Fig. 19. — Oediplax guaxclata, female holotype. a, Axtexxal and buccal segion. 



X 2J ; b, RIGHT CHELA, OUTER VIEW, X IJ. 



greater, and the wrist not obliquely quadrilateral. The regions are 

 well separated, the front is less than one-fourth as wide as the cara- 

 pace, and the buccal cavern does not widen anteriorly. The male is 

 not known, but it is probable that, as in the female, the third seg- 

 ment of the abdomen does not cover the sternum between the last 

 pair of legs. 



Only the type species is known. 



OEDIPLAX GRANULATA Rathbun. 



Plate 13, figs. 1 and 2. 



(Ediplan- granulatus Rathbun, Proc. U. S. Nat. Mus., vol. 16, 1S93, p. 242 

 (type-locality. Gulf of California, 33 fathoms; holotype female. Cat. 

 No. 174G5, U.S.N.M.). 



Diagnosis. — Antero-lateral margins strongly dentate. Wrist not 

 subrectangular. Abdomen of male not covering sternum at third 

 segment. 



