kichardson] TERRKSTRIAI, ISOPODS OF FAMILY KUBKLIDJ-; 245 



the space between the lateral angles of the fifth segment and the 

 apical process of the sixth segment. It extends to the extremity of 

 the lateral angles of the fifth segment as well as to the extremity of 

 the apical process of the sixth segment. There is a deep notch about 

 the middle of the posterior margin, on either side of which the 

 lateral angles are produced in the form of lobes. The outer branch 

 is inserted in the median posterior notch of the basal article and 

 does not extend beyond the lateral angles. The inner branch does 

 not reach by some distance the extremity of the apical process of 

 the sixth abdominal segment. All the legs are ambulatory. 



Only one specimen of this species was collected by Dr. O. F. Cook 

 at Mt. Coffee. The type is in the possession of Dr. O. F. Cook. 



Genus ETHELUMORIS, gen. nov. 



Second pair of antennae short. Flagellum composed of two 

 articles. 



First segment of thorax with the epimera or coxopodites arising 

 from the underside and extending in the form of wide plates along 

 the entire lateral margin. They are produced beyond the post- 

 lateral angles of the segment and are cleft posteriorly by a deep 

 fissure, which separates the large inner portion from the smaller 

 outer portion. Second and third thoracic segments produced later- 

 ally in a small, triangular lobe on either side, beneath which on 

 the underside the coxopodites are present in the form of a sharp 

 tooth on the second segment and a low ridge on the third segment. 



The sixth or terminal segment is triangular at the base, with the 

 apex produced in a triangular process, with sides converging gradu- 

 ally to a rounded extremity. The basal article of the uropoda is 

 quadrangular in shape, with the posterior margin excavated in the 

 middle, in which the outer branch is inserted. The outer post- 

 lateral lobe extends back of the outer branch. The inner branch 

 of the uropoda is not visible on the ventral side, but is hidden by the 

 apical process of the sixth abdominal segment. This branch arises 

 from the inner upper angle of the basal article and is conically pro- 

 duced. 



In the form of the coxopodites of the first thoracic segment, this 

 genus approaches SpJicrannadillo Richardson, but differs in the 

 form and position of the uropoda. 



The type is Bthelumoris parallel its. 



