SEARLE: ISOPODA. 3/1 
ous, composed of only a few articles, and not visible in a dorsal view. 
The tips of the mandibles project from the apex of the oral cone. 
The first segment of the thorax is coalesced with the head and bears 
the first pair of legs. The following five segments are more or less sub- 
equal in length, but increase gradually in width to the fourth free 
segment. The last thoracic segment is longer than any of the preceding 
segments and is posteriorly rounded. Each thoracic segment bears a 
pair of prehensile legs, there being seven pairs altogether". 
The abdomen is inserted beneath the last thoracic segment, is coni- 
cally tapered, unsegmented, and devoid of appendages. 
Locality One specimen. Station 4621. Lat. 6° 36’ N. long. 81° 
44’ W. off Mariato Point. 
Type.— Cat. No. 46,433, U. S. N. M. 
1 In the specimen the third leg on the right side is broken off about the middle 
