176 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
ONISCIDX 
Philoscia culebrae, new species. 
Body elongate-oval, about 2.5 times as long as broad; head about twice as broad as long, front 
somewhat recurved between sides and middle, producing the appearance of a small lobe in front of 
each eye, sides and posterior margin rounded; first segment of thorax longest, its anterior and poste- 
rior margins strongly curved, anterior angle rounded and projecting somewhat beyond sides of head ; 
next six segments subequal in length, second, third, and fourth widest, the last three successively 
narrower; posterior angles of last four segments produced, successively increasing in length, that of last 
reaching almost to posterior border of third abdominal segment; abdomen almost as long as last three 
segments of thorax, gradually decreasing in width posteriorly; segments subequal in length, the sides 
of the first, more or less concealed by the lateral angle of the last thoracic segment; telson, short, 
hardly longer than other segments, produced to a blunt point in median line posteriorly. 
Eyes moderate (for the genus); first antennas minute, second antennae when laid against sides 
of body extending to about end of second thoracic segment, spinose; peduncle, 5-jointed; first joint, 
short; second and third, equal; fourth, longer; fifth, longest, equal to third and fourth combined; 
flagellum 3-jointed, about equal to last joint of peduncle. Mandible with narrow 4 or 5 dentate tip, 
at the base of which are two plumulose setae, and lower down a brush of fine setae; no palp. First 
maxillae with inner plate furnished with several small spines; outer plate with many. 
The legs increase slightly in length from before backward and are furnished with long, acute 
spines. The uropods are broken off. 
From Culebra. Two specimens, under drift on shore, 4.2 by 1.6 mm. 
