RICHARDSON] TERRESTRIAL ISOPODS OF FAMILY EUBELID.E 247 



underside and extend along the entire length of the lateral margin 

 in the form of wide plates, narrower anteriorly than posteriorly. 

 They extend considerably beyond the post-lateral angles of the 

 segment and are rounded posteriorly. A deep fissure separates them 

 posteriorly from the post-lateral angles of the segment, the inner 

 portion being much larger than the outer portion. The lateral 

 margins of the second and third segments are drawn out on either 

 side in a small, triangular lobe, on the underside of which the cox- 

 opodite appears in the form of a sharp tooth on the second seg- 

 ment and in the form of a low ridge on the third segment. 



The first two segments of the abdomen are covered laterally by 

 the seventh thoracic segment. The lateral parts of the three follow- 

 ing segments are well developed and are produced backward. The 

 first five segments are subequal in length. The sixth or terminal 

 segment is triangular at the base, with the apex produced in a 

 triangular process, with sides converging gradually to a rounded 

 extremity. The basal article of the uropoda is quadrangular and 

 occupies all the space between the produced lateral parts of the 

 fifth abdominal segment and the apical process of the sixth seg- 

 ment. It extends to the extremity of the lateral parts of the fifth 

 segment, but not quite to the apex of the sixth segment. There is 

 a deep excavation in the middle of the posterior margin, in which 

 the outer branch is placed, and the outer post-lateral angle of the 

 basal article extends back of the branch. The outer branch ex- 

 tends but little beyond the post-lateral angles of the basal article. 

 The inner branch does not reach the extremity of the terminal ab- 

 dominal segment, but attains the tip of the inner post-lateral angle 

 of the basal article of the uropoda. All the legs are ambulatory. 



Only one specimen was collected by Dr. O. F. Cook at Mt. Coffee. 

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



