COPEPODS OF THE WOODS HOLE REGION 83 



mented, end segment divided at the tip, endoped 1-segmented. Total 

 length, 1.85-2.15 mm. 



Remarks. — The distinguishing characters of this species are the 

 shovel-shaped protuberance on the genital segment of the female and 

 the form of the fifth legs in the male. This is a pelagic species and 

 stays in the open ocean, but may be found either at the surface or 

 near the bottom. In the female the eighth, ninth, tenth, and eleventh 

 segments of the first antennae are usually fused into one long 

 segment, which is quite conspicuous. 



Genus SCOLECITHRICELLA G. O. Sars, 1902 



Body comparatively short and stout ; head fused with the first seg- 

 ment, with or without a crest ; fourth and fifth segments fused with 

 rounded posterior corners; urosome 4-segmented in female, 5-seg- 

 mented in male; first antennae about as long as metasome; mouth 

 parts somewhat modified in the male ; exopods of first four pairs of 

 legs 3-segmented; first endopod 1-segmented, second endopod 2-seg- 

 mented, third and fourth endopods 3-segmented; fifth legs present 

 in both sexes, uniramose and lamellar in the female, one or both legs 

 biramose in the male. 



KEY TO THE SPECIES (FEMALES) 



3. Fifth legs symmetrical, 1-segmented, and lamellar minor (p. 83) 



Fifth legs sometimes asymmetrical, 3-segmented ovata (p. 84) 



SCOLECITHRICELLA MINOR (Brady) 



Figure 57 



Scolecithrix minor Brady, Voyage of H. M. S. Challenger, vol. 8, pt. 23, Cope- 



poda, p. 58, pi. 16, figs. 15, 16, pi. 18, figs. 1-5, 1883. 

 Scolecithricella minor Sars, Crustacea of Norway, vol. 4, p. 55, pis. 37, 38, 



1902. 



Occurrence. — Two females were taken in a vertical haul, Station 

 10295, Grampus, east of Georges Bank. 



Distribution. — ^Indian Ocean (Giesbrecht) ; Gulf of Guinea (T. 

 Scott) ; North Atlantic (Brady, Farran) ; Davis Strait, Greenland, 

 Iceland (With) ; South African coast (Cleve) ; Norwegian coast 

 (Sars) ; Arctic Ocean (Damas and Koefoed) ; Gulf of Maine 

 (Bigelow). 



Color. — Body colorless and very transparent, the swimming legs 

 with a faint wash of yellow and the eye ruby red. 



Female. — Metasome three times as long as wide and three times the 

 length of the urosome ; genital segment constricted at its base and not 

 protruding ventrally ; first antennae just reaching the posterior cor- 

 ners of the fifth segment ; second and third legs with scattered spines 



