DANAIA. 67 



A M PHI POD A . STEQOCEPHA L IDE*. 



NATATORJA. 



Genus DANAIA. 



Danaia, SPENCE BATE, in Ann. Nat. Hist. 1857, xix. p. 137. 



Generic character. Antennae subequal. Superior antenna? "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. 



. 



