STALK-EYED CRUSTACEA 97 



tubercles. The arm has spines in front and behind, and 

 slightly tuberculous above. The walking legs are very 

 long, spiny, and slightly hairy. 



Range. — Guiana, Bermuda, Bahia. 



14. Mithrax (Mithrax) nudus. 



MitJirax nudus .... Miers. 

 MitJiracuhis nudus . . A. Milne Edwards. 



The carapace is much wider than long ; the antero- 

 lateral borders have four obtuse prominences, of which 

 the second and third are largest ; the fourth is small. 

 There are some round prominences on the branchial 

 regions, but the surface of the carapace is smooth. In 

 young specimens these projections are more marked, and 

 the prominences of the lateral borders are sharper. The 

 front is straight, little advanced. The rostrum is formed 

 of two round tubercles, behind which are two small 

 projections. The basal joint of external antennae is wide, 

 and has outside two round projections, of which one con- 

 stitutes the anterior angle. The external maxillipedes are 

 wide; the fourth joint is slightly dilated outside; not 

 notched on the inside. The first pair of legs of the male 

 is long and strong. The hand is smooth, slightly swollen, 

 rounded above. The movable finger has one strong, 

 pointed tooth situated on about the first one-third of its 

 cutting edge. The fixed finger has only fine teeth at its 

 extremity. The forearm is smooth. The arm has nodes 

 above, and in front a thick and wide projection. In young 

 specimens there are only some pointed tubercles. The 

 walking legs are strong, spiny, and hairy. 



The sternal plastron is rounded, and the abdomen of 

 the male is narrow. 



Range. — Guadaloupe. 

 7 



