COPEPODS OP THE WOODS HOLE REGION 471 



first antenna. The description given above is the first for the male 

 of the species ; it is the only male of the genus thus far found in the 

 area. 



EUDACTYLINODES NIGRA (Wilson) 



Plate 35, n 



Eudactylina nigra Wilson, Proc. U. S. Nat. Mus., vol. 60, art. 5, p. 67, pis. 11, 12, 

 1922. 



Occurrence. — Females in considerable abundance were found on the 

 gills of sand sharks captured in the fish nets on Marthas Vineyard, 

 July, 1902 and 1904. 



Distribution. — Not found outside the present area. 



Color. — Body yellowish white, the long and irregular ovaries and 

 oviducts brownish, the contents of the digestive tract black; eggs 

 dark brown. 



Female. — Carapace somewhat quadrilateral, with a convex frontal 

 margin, a concave posterior margin, and nearly straight sides; each 

 posterior corner carries a stout spine directed diagonally inward and 

 backward. The four free thorax segments increase in length and 

 diminish in width backward; the fifth segment is twice as long and 

 half as wide as the second segment; genital segment a little longer 

 than wide; abdomen 2-segmented, anal segment twice the length of 

 the basal segment. First antennae 8-segmented, the two basal seg- 

 ments enlarged and together fully half the length of the antenna, 

 both segments with a row of spines along the anterior border on the 

 ventral surface, and on the dorsal surface the second segment ends 

 in two claws ; second antenna uncinate. Maxillipeds similar to those 

 of the preceding species, the basal segment stout and tapered dis- 

 tally, the terminal portion much longer and strongly curved. End 

 segment tipped with a knob, two claws, and a lamina, subchelate. 

 Eami of first three pairs of legs 3-segmented; fourth exopods 3-seg- 

 mented, endopods 2-segmented; segmentation in all of the exopods 

 indistinct. Each fifth leg a small process tipped with a single seta ; 

 sixth-leg rudiments on the genital segment. Total length, 2.25- 

 2.5 mm. 



Mde. — Unknown. 



Remarks. — This species may be recognized by the spines at the 

 posterior corners of the carapace and by the huge maxillipeds, which 

 project nearly their entire length beyond the margin of the carapace. 



EUDACTYLINELLA, new genus 



Female. — Head fused with first segment, carapace with a small 

 rostrum at the center of the anterior margin; second, third, fourth, 

 and fifth segments diminishing in width and without dorsal plates; 

 genital segment much narrower than fifth segment; abdomen 2-seg- 



