COPEPODS OF THE WOODS HOLE REGION 



171 



(Bourne) ; Shetland Islands (Norman) ; Bouloojne (Canii) ; Narra- 

 gansett Bay (Williams) ; Woods Hole Harbor (Fish). 



Color. — Body yellowish gray, the cephalothorax and the sides of 

 the metasome with a decided greenish tinge; caudal setae and the 

 large spines on the elongated second legs dark cinnamon-brown ; eye 

 ruby red. 



Female. — Metasome strongly compressed and of nearly uniform 

 width, urosome tapering posteriorly; body segments with smooth 

 posterior margins; caudal rami a little longer than wide, divergent, 

 the apical setae spread- 

 ing considerably. 

 Rami of first four 

 pairs of legs 3-seg- 

 mented, spines on first 

 exopod slender and 

 elongate, the one on 

 the second segment 

 turned backward; dis- 

 tal segment of second 

 endopods nearly three 

 times as long as the 

 first and second seg- 

 ments combined ; dis- 

 tal segment of fifth legs 

 with transverse rows 

 of slender spinules on 

 the anterior surface 

 near its base. Total 

 length, 1.2-1.3 mm. 



Mate. — Smaller than female, the urosome 5-segmented; first an- 

 tennae terminating in a swollen, clawed hand; first four pairs of 

 legs like those of female; distal segment of fifth legs armed with 

 seven slender setae, without the terminal spine; inner expansion of 

 basal segment with a single straight seta. Genital segment showing 

 p. rudimentary sixth pair of legs at its posterior corners, each made 

 up of a small lamina armed with two setae and two spines. Total 

 length, 1-1.1 mm. 



Remarks. — This copepod can be recognized at once by the elon- 

 gated second endopods and the peculiar form of the fifth legs. It 

 sticks rather closely to the bottom, where the long second legs assist 

 it in locomotion. 



Genus CANUELLA T. Scott, 1893 



Body nearly cylindrical; head separated from first segment; ros- 

 trum narrow and tongue-shaped; urosome of female 4-segmented, of 



Figure 116. — Lonffipedia coronata: a. Female, dorsal 

 (after Sars) ; b, o, male, fifth and sixth legs, re- 

 spectively ; d, female, fifth leg 



