LEPTASPIDIA. 331 
ISOPODA. ASELLIDA. 
NORMALIA. 
Genus—LEPTASPIDIA. 
Generic character. Animal pear-shaped, flattened, ciliated 
along the margins; inner pair of antennze nearly one-third of 
the length of the outer pair; legs terminated by single acute 
dactylos ; pleon ovate, extremity entire; uropoda lateral; eyes 
obsolete. 
WE have established this genus for the reception 
of a minute animal, which differs in several of its 
characters from the rest of the family, but agrees 
with them in the dilated form of the body, with 
the margins of the segments ciliated, and the semi- 
circular form of the head, with the lateral posterior 
angles rounded. We have not observed the eyes in our 
unique specimen. The upper or inner antennz, which 
are most probably represented in our cut too wide apart, 
are nearly one-third of the length of the outer pair, 
which latter are about half the length of the animal, 
and appear to consist of three nearly equal-sized basal 
joints, and an articulated flagellum. The segments of 
the body are rounded and ciliated, gradually decreasing 
in width and length from the second joint. The legs 
are extremely short and slender, the anterior having the 
wrist and hand somewhat thickened, all terminating in a 
single slender and acute finger. The tail resembles that 
of the genus Munna, and is oval in shape, flattened and 
ciliated with a slight notch on each side beyond the 
middle, each impression bearing a small conical appen- 
dage (uropoda), the extremity being produced back- 
