4 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



Ampelisca cristata forma microdentata J. L. Barnard 

 (Plate 1, figs. A-G) 



Ampelisca cristata forma microdentata Barnard, 1954, Allan Hancock 

 Pacific Expeds., vol. 18, no. 1, pp. 28-29, pis. 17, 18. 



Remarks. — In the accompanying figures are shown variations in the 

 shape of the carina on pleon segment 4 and the third pleonal epimera. The 

 third uropods of specimens from A24-39 were stouter than in other 

 Caribbean specimens examined. 



Material examined.— AU-39 (2 and frags.), A15-39 (2), A18-39 

 (5), A24-39 (12), A32-39 (2), A42-39 (1), A44-39 (1). 



Distribution. — One mi southwest of Cape la Vela, Colombia, 10-13 

 fms; 2 mi oH Bahia Honda, Colombia, 9-10 fms; 8 mi southwest of San 

 Nicolaas Bay, Aruba, 23-24 fms; Cubagua Island, Venezuela, 2-5 fms; 

 3 mi north of Coche Island, Venezuela, 19-33 fms; 7 mi north of Mar- 

 garita Island, Venezuela, 21-22 fms; 4 mi north of Tortuga Island, 

 Venezuela, 21-22 fms. 



Ampelisca cristoidcs J. L. Barnard 

 (Plate 1, figs. H-J) 



Ampelisca cristoides Barnard, 1954, Allan Hancock Pacific Expeds., vol. 

 18, no. 1, pp. 29-31, pis. 19, 20. 



Remarks. — Several variations in the keel-like carina of the fourth 

 pleonal segment are shown in the figures. Otherwise, the specimens cor- 

 respond with the type material of the species. 



Material examined.— A\3-39 (4), A 14-39 (5), A32-39 (1). 



Distribution. — One mi southwest of Cape la Vela, Colombia, 10-13 

 fms; 2 mi southwest of Cape la Vela, Colombia, 21-22 fms; 3 mi north- 

 west of Coche Island, Colombia, 19-33 fms. 



