52 



than the other 2 combined, last joint armed with 4 spines, the innermost rather 

 slender. Last pair of legs very small. 



Colour gray, with a slight yellowish green tinge. 



Length of adult female 1.23 mm., of male 1.33 mm. 



Remarks. This form was figured, but not described, by Kroyer in the 

 Atlas to Gaimard's well-known work "Voyage en Scandinavie". It is much the 

 largest of our Harpactici, and is moreover easily recognizable by its comparatively 

 broad, sub-depressed body. The Harpacticus nordlandicus of Boeck is unquestio- 

 nably identical with this species; and the form recorded by Mr. S. A. Poppe as 

 Harpacticus chelifer, var. arctica, is also referable to the same species. 



Occurrence. I have met with this form rather frequently along the whole 

 Norwegian coast, from the Christiania Fjord to Vadso. It is not, however, like 

 the preceding species, a littoral form, but is only found in depths ranging from 

 20 to 100 fathoms, muddy bottom. 



Distribution. Behring Sea (Poppe), Bear Islands, Spitsbergen (Scott). 



34. Harpactieus graeilis, Glaus. 



(PI. XXX, fig. 1). 

 Harpacticus graeilis, Glaus, Die freilebenden Copepoden, p. 135, PI. XIX, fig. 20. 



Syn: Harpacticus elongatus, Boeck. 

 chelifer, Giesbrecht (not Miiller). 



Specific Characters. Female. Body rather slender, with the anterior 

 division slightly depressed, the posterior considerably narrower. Rostrum rather 

 prominent. Caudal rami very short, not nearly as long as they are broad, apical 

 setae slender and divergent. Anterior antennae rather elongated, attaining the 

 length of the cephalic segment, 9-articulate, terminal part scarcely exceeding in 

 length l / 3 of the proximal part. Posterior antennae with the outer ramus normal. 

 Posterior maxillipeds resembling in shape those in H. uniremis. First pair of 

 legs comparatively more slender than in the 2 preceding species, with the distal 

 joint of the outer ramus shorter than the proximal one; inner ramus with the 

 outer 2 joints confluent. Last pair of legs with the distal joint oblong in form; 

 inner expansion of proximal joint well developed, though less broad than in H. 

 uniremis, marginal spines of both joints rather slender, setiform. 



Male exhibiting the usual differences from the female. Outer ramus of 

 3rd pair of legs considerably incurved, last joint with 3 thickish spines and a 

 long ciliated seta at the inner corner. Last pair of legs very small, with the 

 distal joint somewhat club-shaped, the 2 outermost setae spiniform. 



