612 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



139. OSACHILA LEVIS, new species. 



Shape resemhling O. taberosa; surface smooth. 



The shape of the carapace is almost exactly like that of 0. tuberosa 

 Stimpsou. The character of the surface is, however, strikingly differ- 

 ent. While the protuberances of the carapace are placed similarly to 

 those of taherosa, their surface is entirely smooth and punctate, with- 

 out suggestion of tuberculation or erosion as in tuberosa. The lateral 

 angle of the carapace is farther back in levis than in tuberosa, the 

 I)osterolateral margin is less concave, and the posterior portion of the 

 carapace wider. The protuberances of the dorsal surface are also 

 more deiiressed, especially noticeable in those of the gastric region. 

 The inferior surface is roughened as in tuberosa, although the tuber- 

 cles are less confluent than in that species. The same is true of the 

 outer surface of the chelipeds. The ambulatory legs are shorter than 

 in tuberosa. 



JDimensions. — Female: Median length, 19.1 mm.; width, 21.4 mm. 



Type.—^o. 21508, U.S.X.M. One female with eggs. Off Cape St. 

 Lucas, 31 fathoms, station 2829. 



LEUCOSIIDxE. 



140. SPELCEOPHORUS ELEVATUS Rathbun. 



Sjielaophorns elecatiis Rathbun, Bull. Labor. Nat. Hist. State Univ. Iowa, 1898, 

 IV, p. 290, pi. Ill, fig. 1. 



Off Cape St. Eoque, Brazil, 20 fathoms, station 2758. 



141. EBALIA CRISTATA, new species. 

 (Plate XLIV, fig. 5.) 



Carapace octagonal, tuberculate, posteriorly bilobed; front entire; 

 chelipeds cristate; third to fifth segments of abdomen coalesced; penul- 

 timate segment spined. 



Carapace thick, octagonal; length and breadth subequal. A median 

 ridge extends from the front backward to the intestinal region. Front 

 truncate. Anterolateral margin with two shallow lobes; below the 

 margin are two teeth, one pterygostomian, the other branchial. Lateral 

 angle of the carapace acute; from this point the jiostero-lateral margin 

 is straight for half its length, the straight portion terminating in an 

 acute angle. From this angle to the posterior margin the postero- 

 lateral margin is concave. Posterior margin distinctly bilobed. In a 

 side view the intestinal region is seen to have a perpendicular posterior 

 margin. Anterior third of the caraj^ace depressed. From the median 

 gastric ridge an elevated area extends obliquely toward the anterior 

 half of the posterolateral margin ; this is irregularly tumid. The entire 

 surface of the body and legs is covered with tubercles. The third, 

 fourth, and fifth segments of the abdomen of the male are coalesced. 

 The sixth segment has parallel sides and is longer than wide, and 



