128 BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



EBALIA MAGDALENENSIS Rathbun 



Figure 34; Plate 35, Figures 4, 5 



Ebalia magdalenensis Rathbun, in Glassell, Trans. San Diego Soc. Nat. Hist., 

 vol. 7, p. 334, pi. 22, 1933 (type locality, Magdalena Bay, Mexico; type, 

 U.S.N. M. no. 67429). 



Diagnosis. — Posterior lobes of carapace triangular, separated. 

 Posterolateral lobes similar, larger. Front slightly bidentate. He- 

 patic region not defined posteriorly by an impressed line. Lateral 

 angle of carapace obtuse; the border behind slightly convex. 



Description. — Shape resembling that of E. cariosa. Carapace 

 covered with much finer, crowded granules. Front with two shallow, 

 obtusangled lobes; orbits oblique, behind the front. Median carina 

 broad and blunt, concave in profile, narrowing toward middle of 

 carapace, indicating the mesogastric region. Hepatic prominence 

 very slightly produced; anterolateral cavity suboblong, granules 

 largest in the deepest part. The highest point of the branchial 

 region is at its inner anterior angle, from which a concave line trends 

 toward the lateral angle of the carapace. Beliind tliis, the surface 

 is convex and uneven, showing two low elevations. A right angled 

 tooth at posterolateral angle. A deep furrow either side of the cardiac 

 region surmounted by a blunt lobe. Intestinal lobes broad, trian- 

 gular, blunt. Subhepatic projection prominent, extendmg downward 

 and forward, tip lobiform. CheHpeds granulate, coarser on merus, 

 becoming finer toward fingers; three lobes on posterior cristate 

 margin of merus, manus coarsely granulate above, fingers slender, 

 hairy on prehensile edge. Ambulatory legs with acornlike granules, 

 one row on merus, two rows above on carpus and propodus, one row 

 below on propodus. 



Color. — Preserved specimens show four red dots in a square on the 

 female abdomen, and red color on distal half of fingers. 



Measurements. — Female holotype, length of carapace on median 

 line 11, length to tip of intestinal lobe 11.7, width 11.3 mm. 



Range. — Mexico to Ecuador; 2 to 18 fathoms. 



Material examined. — See table 40, page 131. 



EBALIA HANCOCEI Rathbun 



Plate 36, Figures 6-8; Plate 82, Figures 1, 2 



Ebalia hancocki Rathbun, Proc. Biol. Soc. Washington, vol. 46, p. 183, 1933 

 (type locality, Charles Island, Galapagos; type, U. S. N. M. no. 67988). 



Diagnosis.— Coxa^SiCe broader than long. Posterior lobes extremely 

 shallow. Hepatic region elevated. An excrescence above base of 

 movable finger. 



