NO. 3 AMPHIPODA OF CUBA — SHOEMAKER 9 



second urosome segment. Between the teeth of the metasome seg- 

 ments and those of the first urosome segment there is a seta, but be- 

 tween the teeth of the second urosome segment there are no setae. 



Uropod 3 with rami rather broad, outer ramus bearing groups of 

 stout spines on outer margin and a few spines on distal half of inner 

 margin ; inner ramus with spines on both margins. Telson not reach- 

 ing to end of peduncle of uropod 3, deeply cleft, bearing three distal 

 spines on each lobe, and two plumose setules or hairs on the lateral 

 margins. Length of male from front of head to end of uropod 3, 

 14 mm. 



Female. — The female does not ditTer materially from the male; 

 even the gnathopods being like those of the male. The right and left 

 gnathopods are alike in both sexes. The length is 14 mm. 



Type.— A male, U.S.N. M. No. 81564, taken by Dr. Paul Bartsch 

 at station 169 (2i°57'i5" N., 82°32'45" W.), April 15, 1937. 



In many characters this species agrees with riibromaculatus, but 

 disagrees in others. The lower posterior corner of the third, fourth, 

 and fifth peraeopods is not produced angularly downward, but is 

 evenly rounding. The palm of the second gnathopod is quite different, 

 as is seen by comparison with Sheard's figure 2 F. The first and 

 second urosome segments are not evenly dentate. The telson bears 

 on each lobe three distal spines, the outer one of which is the longest 

 and the inner one the shortest. 



The male which I have figured was taken by the Albatross at station 

 2365, just north of Yucatan, in 24 fathoms. It has been taken also 

 on the west coast of Florida, and at Albatross station 2369-74 in the 

 northeastern part of the Gulf of Mexico, in 26 fathoms. 



CERADOCUS sp. 



Station 169, i specimen. 



This specimen, an ovigerous female measuring about 10 mm., re- 

 sembles Ceradocus cliiltoni Sheard in several characters, but differs in 

 others. The second gnathopods, the right and left of which are alike, 

 very much resemble those of C. cliiltoni, though the sixth joint is pro- 

 portionally a little longer and narrower. The palm is toothed as shown 

 by Sheard's figure 7 A, but the prominent defining angle bears two 

 stout spines instead of one as shown in his figure. The lower posterior 

 corner of the second joint of peraeopods 3 to 5 is produced angularly 

 downward. The teeth of the first and second urosome segments vary 

 greatly in size, some of them being long and upward-cur\-cd. The 



