STALK-EYED CRUSTACEA 425 



pendages is slender and filamentous ; the three following 

 pairs are broad, and are fringed with ciliated hairs. 



The gills spring from the membranous articulation 

 between the body and the first joint of the legs — ten 

 pairs. There is a branchial plate on first maxillipede. 



Range. — Atlantic and Pacific Oceans. 



Synopsis of the Species. 



A. The lower margin of the fourth joint of the large 

 leg is compressed into a thin convex plate serrated 

 posteriorly. — (C. occidentalism 



B. The fourth joint of the large leg is armed with a 

 strong tooth. — {C. major.) 



I. Callianassa occidentalis. 



Callianassa occidentalis . . Spence Bate. 



The large hand is smooth, longer than broad, and 

 broader than the fifth joint, which is also longer than the 

 palm. The fourth joint is as long as the fifth ; the lower 

 margin is compressed to a thin convex plate, which is 

 serrated posteriorly. 



Range.— West Indies; in deep water. 



2. Callianassa major. 



Callianassa major . . Say, H. Milne Edwards. 



The fifth joint of the large leg has granulations. The 

 fourth joint is armed with a strong tooth. 

 Range. — West Indies, Florida. 



2. Cheramus. 



Cherannis .... Spence Bate. 



Resembles Callia)iassa, only the external maxillipedes 

 have their joints more or less rounded and are pediform. 



