24 PROCEEDINGS OF THE NATIONAL. MUSEUM vol.68 



joint not expanded below as in B, catharinensis, hind margin straight 

 and bearing a row of plumose setae, no lobe at lower hind corner, rest 

 of limb normal. Peraeopod 4, side-plate as in B. catharinensis, 

 second joint widest through the lower part, hind margin evenly con- 

 vex, rest of limb normal. Peraeopod 5, nearly as in B. catharinensis, 

 but second joint proportionately a little shorter. The seventh tho- 

 racic and the first tw^o abdominal segments are produced dorsaliy 

 into prominent, sharp, backward-pointing processes. The lower lat- 

 eral margin of the third abdominal segment with 11 upward- 

 pointing teeth at the base of each of which is a setule. Uropod 1, 

 outer edge of peduncle provided with a row of short, closely-set 

 spines. Uropod 3, outer ramus slightly shorter than inner, both rami 

 provided on their edges with a row of short spines and long plumose 

 setae, each ramus ending in a long, slender, transparent point, at 

 the base of which is a prominent lobe. Telson with sides convex 

 at base then straight and converging, each side bearing two plumose 

 setae at center, cleft not reaching middle, lobes with inside margins 

 concave, apices pointed and each bearing a setule near the end. 



Length. — 5 mm. 



Locality. — Between Water Island and Saint Thomas, Virgin Is- 

 lands of the United States, June 28, 1915, 2-5 fathoms, collected 

 by Clarence R. Shoemaker. 



Type. — United States National Museum, catalogue number 52295. 



Female. — Very much like the male but not quite so slender. 

 Rostrum narrower and sharper than- in male. Gnathopod 1 a little 

 stouter than in male. Gnathopod 2 as in male but with the second 

 joint longer than side-plate, and third joint three-fourths the length 

 of second. 



There are in the collection of the United States National Museum 

 the following specimens : 7 specimens collected in shallow water 

 about the Island of Saint Thomas, Virgin Islands of the United 

 States, by Clarence R. Shoemaker during the summer of 1915; 

 1 specimen collected off the west coast of Florida by the steamer 

 Albatross, between station numbers 23G9-74, February 7, 1885, 

 depth 64 fathoms; 1 specimen probably collected at Porto Rico, 

 collector and date unknown. 



CARINOBATEA CARINATA. new species 



(Figure 16) 



This species closely resembles Carinohatea cuspidata but differs 

 in the following characters. Rostrum a little longer, narrower, and 

 more acutely pointed than in C. cuspidata. Gnathopod 2, second 

 joint as long as or a little longer than side-plate, third joint less 

 than one-third the length of second, fifth and sixth proportionately 



