132 BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



Description. — Near E. magdalenensis . Carapace broader than 

 long. Surface covered with large globular granules, in large part 

 separated. Frontal margin divided by a short impressed line into 

 two shallow blunt teeth. Branchial elevation larger than in E. 

 magdalenensis; its anterior, highest portion has finer, closer granules. 

 The anterolateral depression is restricted by a hepatic elevation; 

 behind this the anterolateral margin of the carapace is plainly indi- 

 cated; just below it, a rectangular pterygostomian tooth, behind 

 which are two triangular spines, the hinder pair at the widest pa.rt of 

 the carapace, the beginning of the lateral margin of the branchial 

 region which is bordered with flat spinules. Posterior lobes broad, 

 arcuate and very shallow. Subhepatic region acutely pointed. 

 Chelipeds and legs very rough; a triangular tooth on upper base of 

 movable finger; manus much swollen laterally. 



Measurements. — Female holotype, extreme length of carapace 7.2, 

 width 8 mm. 



Range. — Mexico; Galapagos Islands. 



Material examined. — See table 41, page 133. 



EBALIA CLARIONENSIS Rathbun 



Plate 82, Figures 3, 4 

 Ehalia clarionensis Rathbun, Proc. Biol. Soc. Washington, vol. 48, p. 2, 1935. 



Type locality. — Sulphur Bay, Clarion Island, Mexico; 32 fathoms; 

 nullipores; January 5, 1935, no. 136; Hancock Galapagos Expedition; 

 1 male (U. S. N. M. no. 69343). 



Diagnosis. — Surface covered with crowded punctae. No marginal 

 teeth at widest part of carapace. A small median hollow on cardiac 

 region. 



Description. — In general shape resembling E. hancocTci. Carapace 

 narrower, more octagonal. Front more advanced but less elevated. 

 Subhepatic tooth obtuse-angled. Posterolateral angles thickened and 

 rounded. Posterior lobes very shallow, separated by a broad and very 

 slight indentation. Cardiac region with a small hollow in a circular 

 rim, facing obliquely backward. Chela less swollen than in hancocTci. 



Measurements. — Male holotype, length of carapace 6.3, width 6.7 

 mm. 



Range. — Known only from the unique specimen. 



EBALIA CRIST ATA Rathbnn 



Figure 35; Plate 35, Figures 8, 9 



Nursia tuherculata Rathbun, Proc. U. S. Nat. Mus., vol. 16, p. 257, 1893 (type 



locality, Gulf of California; type, U.S.N.M. no. 17503); not E. tuherculata 



Miers, 1881. 

 Ehalia cristata Rathbun, Proc. U. S. Nat. Mus., vol. 21, p. 612, pi. 44, fig. 5, 



1898 (type locality, off Abreojos Point, Lower California; type, U.S.N.M. 



no. 21599). 



