AORA GRACILIS. 
281 
A M PH1P OB A . GA MM A RIDES. 
NAT A TORI A. 
AORA GRACILIS. 
Specific character. Basos of the first pair of gnathopoda having the 
anterior margin without a tooth. Finger with the internal margin serrated. 
Length | inch. 
Lonchomerus gracilis. Spence Bate, Rep. Brit. Assoc. 1855. Ann. 
Nat. Hist. 2 ser. xix. p. 148. White, Pop. 
Hist. Brit. Crust, p. 180. 
Lalaria gracilis. Spence Bate, Ann. Nat. Hist. 2 ser. xx. p. 525, 
1858. 
Aora gracilis. Spence Bate, Cat. Amph. Brit. Mus. p. 160, 
pi. xxix. f. 7. 
The body of the animal is long and slender. The 
eyes are small, round, and black. The superior antennae 
are more than half the length of the animal, the flagellum 
forming more than half of the organ : the secondary 
appendage is slender. The inferior antennae are scarcely 
more than half the length of the superior ; and the 
flagellum is very short, being scarcely half the length of 
the last joint of the peduncle of the inferior. The first 
pair of hands are very long and slender, having the 
second joint long, and unfurnished with a tooth-like 
process, thus differing from Aora typica , the South 
