COPEPODS OF THE WOODS HOLE REGION" 



529 



Male. — Head as long as the rest of the body, its dorsal swellings 

 not very prominent ; thoracic segments increasing in diameter poste- 

 riorly. First antennae 3-segmented; second antennae 4-segmented, 

 the rudimentary endoped given off near the base of the second seg- 

 ment; basipod segments of maxillipeds completely fused, first free 

 segment armed with three short spines on its inner margin, the two 

 proximal ones so close together as to touch at their bases. Total 

 length, 3 mm. 



10 mm. 



\ *■ 



a 



10 mm. 



Figure 313. — Rebelula iouvieri: a. Female, 

 ventral ; i, male, lateral 



Figure 314. — Reielu- 

 la gracilis: Female, 

 ventral 



Remarks. — This parasite is buried in the flesh of its host near the 

 dorsal fin, with only the trunk and egg strings visible. A dense cyst 

 is usually formed around the head and neck of the copepod and 

 often proves difficult to remove without injury to the copepod. 



REBELULA GRACILIS Wilson 

 FiGUEE 314 



Rebelula gracilis Wilson, Proc. U, S. Nat. Mus., vol. 55, p. 585, pis. 53, 54, 1919. 



Occurrence. — Two females were taken from the flesh of the long- 

 nosed eel {Synaphobranchus pinnatus), captured off Marthas Vine- 

 yard by the Alhatross in 1882. 



DistHbution. — Off the coast of New Jersey (Wilson). 



Color. — Body of preserved specimens yellowish white, neck and 

 trunk brownish, ovisacs a deep orange. 



