COPEPODS OF THE WOODS HOLE REGION 



67 



dactylus or third segment also short, with a tuft of hairs on the 

 inner margin near the tip. Total length, 6.5-7.5 mm. 



Remarks. — This large and beautiful copepod appears to be quite 

 a common calanid in the Woods Hole region. Bigelow obtained it 

 in the Gulf of Maine in only two or three surface hauls, but in the 

 contents of the vertical net at nearly 40 stations. This would seem 

 to show that it prefers the deeper water Avhen fully grown, and the 

 size of the specimens obtained at the surface indicates that they are 

 young and undeveloped. 



PARAEUCHAETA BARBATA (Brady) 



Figure 44 



Eiichacta harMta Brady, Voyage of H. M. S. Challenger, vol. 8, pt. 23, Cope- 

 poda, p. 66, pi. 22, figs. 6-12, 1883.— Sars, Crustacea of Norway, vol. 4, 

 p. 41, pi. 28, 1901. 



Paraeuchaeta iarbata A. Scott, /S'(7>o^o-Expeditie, 29a, Copepoda, pt. 1, p. 70, 

 pi. 18, figs. 1-8, 1909. 



Occui'rence. — A single female from the trawl wings, Station 2236, 

 Alhatross, off Marthas Vineyard. 



Distribution. — South Atlantic (Brady) ; Norwegian coast (Sars) ; 

 North Atlantic (Farran, Pearson, With) ; tropical Pacific (A. 

 Scott) ; North Sea (van Breemen), 



Color. — Body a uniform bright red 

 and quite opaque. 



Female. — Head wholly fused with 

 the first segment; posterior corners of 

 fifth segment fringed with long hairs ; 

 ventral protuberance of genital seg- 

 ment smaller than in the preceding 

 species, its apical lobules very unequal, 

 the anterior one much the larger and 

 curved backward like a beak; caudal 

 rami hairy on both margins ; appendic- 

 ular bristles longer than the body and 

 distinctly geniculate at the base. Total 

 length, 10-12 mm. 



Male. — Body shorter and more 

 slender than that of the female ; thumb 

 of the chela at the tip of the left fifth 

 leg coarsely toothed on its inner mar- 

 gin, two of the teeth near the tip larger than the others; finger 

 curved and a little longer than the thumb ; appendicular lobe cylin- 

 drical, with a curved claw at the distal end. Total length, 8-10 mm. 



Figure 44. — Paraeuchaeta iarbata: 

 a. Female, lateral (after Sars) ; 

 h, male, end segments of left fifth 

 leg (after Sars) 



