DANAIA. 
67 
AMP H IP OR A. 
NAT ATOM A. 
STEGOCEPHA PIPES . 
Genus— DANAIA. 
Danaia, Spence Bate, in Ann. Nat. Hist. 1857, xix. p. 137. 
Generic character. Antennae subequal. Superior antennae with 
out secondary appendage. Mandibles destitute of a palpiform 
appendage. First pair of gnathopoda simple. Second sub- 
chelate. Telson single. 
The superior antennae are without a secondary ap- 
pendage. The mandibles have no appendage. The first 
pair of limbs are slender, and terminate in a straight, 
sharp finger, which does not impinge against the under- 
side of the preceding joint. The second pair of limbs 
are larger than the first, and have a subchelate hand. The 
coxa of the first pair of limbs is hidden by that of the 
second, which, as well as that belonging to the third 
pair of limbs, is largely developed. The coxa of the 
fourth pair of limbs is not so largely developed as in 
Montagua , and moreover is excavated to receive the an- 
terior lobe of the coxa of the fifth pair of limbs, which 
is more developed than in Montagua , as is also the second 
joint of the same pair of legs. The posterior pair of 
caudal appendages are unibranched, and the telson is 
simply squamiform. 
This genus, of which we know only a single species, 
has received its name in honour of Professor Dana, whose 
work on the Crustacea has been of great assistance to us 
in our labour. 
