138 BULKETIN 15 8, UNITED STATES NATIONAL MUSEUM 



Family CANDACIIDAE 



Genus CANDACIA Dana, 1846 



Head separated from first segment and rectangular in shape; 

 fourth and fifth segments fused and produced asymmetrically at the 

 posterior corners; urosome 3-segmented in female, 5-segmented in 

 male, often asymmetrical; endopods of first four pairs of legs, 

 2-segmented, exopods 3-segmented, their outer margins toothed; 

 fifth legs uniramose, rudimentary, armed only with spines, or naked 

 setae. 



KEY TO THE SPECIES 



FEMALES 



1. End segments of fifth legs with 2 large apical spines, 3 smaller 



spines on outer, 3 setae on inner, margin norvegica (p. 138) 



End segment of fifth legs with 1 apical spine, 3 spinules on outer 

 margin, inner margin naked armata (p. 139) 



End segment of fifth legs with 3 stout apical spines, 1 outer 



spine and 3 inner setae pachydactyla (p. 141) 



MALES 



1. Projection on right side of genital segment large and irregularly- 

 tubercular at tip norvegica (p. 138) 



Projection on right side of genital segment small and acuminate ; 

 both corners of fifth segment reaching abdomen armata (p. 139) 



Projection on right side of genital segment fingerlike and blunt; 



right corner only of fifth segment reaching abdomen, pachydactyla (p. 141) 



CANDACIA NORVEGICA (Boeck) 



Figure 94 



Candace norvegica Boeck, Forh. Vid.-Selsk. Christiania, 1864, p. 235. 



Candacia norvegica Sars, Crustacea of Norway, vol. 4, p. 134, pis. 89, 90, 1902. 



* 



Occurrence. — Two males and 1 female in a vertical haul, Station 



20129, Gramjpus, southeast of Nantucket. 



Distribution. — Norwegian coast (Boeck, Sars) ; Gulf of Maine 

 (Bigelow). 



Color. — Body highly transparent and practically colorless. 



Female. — Metasome three times as long as wide ; posterior corners 

 of fifth segment pointing outward and acute; urosome perfectly 

 symmetrical and one-third as long as metasome; genital segment 

 armed on either lateral margin with a small spine, pointing diago- 

 nally backward; end segment of fifth legs much longer than the 

 two basal segments combined, tipped with two stout, unequal spines, 

 three shorter spines on the outside, three spinelike setae inside. 

 Total length, 3-3.35 mm. 



