118 TANAIDA. 
from the length of the antennz (nearly equal to that of 
the entire body), and to the greatly elongated anterior 
pair of legs (nearly twice that of the antenne). It 
is founded upon a minute species from the Feejee 
Islands, and was observed by Mr. Dana to be caprelloid 
in its habits, attaching itself by its hinder legs to sea- 
weeds, and reaching out the long arms in different 
directions as if in search of prey. In other respects 
the genus is closely allied to Tanais, T. Edwardsti of 
Kréyer, Tidssk. iv., 1842, pl. 2, figs. 13-19, being con- 
sidered by Dana to belong to the same genus. This 
is, however, doubtful, since, according to Fritz Miller, 
that species is the male of 7. Savignyi, and it is not 
improbable that the female of Leptochelia may also 
prove to be a true Zanais, in which genus it has, indeed, 
been placed by Lilljeborg in his recent memoir on this 
family. 
