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Stat. 98, 2 specimens. — Stat. 1 17% 1 specimen. — Stat. 124, 2 specimens. — Stat. 144, 

 3 specimens. — Stat. 157, 1 specimen. — Stat. 213, 4 specimens. 



This is the largest known member of the genus. The two sexes can easily be identified 

 by the structure of the fifth pair of feet. 



Pontellopsis regalis has a moderately wide distribution. It has been recorded from the 

 Atlantic, Indian and Pacific Oceans, and from the Mediterranean. 



5. Pontellopsis strenua (Dana). 



Pontella strenua Dana, 1849, p. 32. 



PoHtellina strenua Dana, 1852, p. 1158, pi. 8i. 



Monops strenuus Giesbrecht, 1893, p. 486, pis. 26 & 41. 



Monops grandis Claus, 1893 (pars), p. 277. 



Pontellopsis strenua Giesbrecht & Schmeil, 1898, p. 147. 



Monops strenuus Cleve, 1901, p. 7. 



Pontellopsis strenua Thompson & Scott, 1903, p. 253. 



Ten specimens were found in the plankton obtained from the following two stations. 



Stat. 96 (night), 4 specimens. — Stat. 117", 6 specimens. 



This species is closely related to Pontellopsis regalis, but it can easily be distinguished 

 by its smaller size, and by the structure of the fifth pair of feet of the two sexes. 



Pontellopsis strenua appears to be rather limited in its distribution. It has only been 

 recorded from the Indian and Pacific Oceans. 



The figures of Pontella strenua given by Professor Brady in the report on the 'Challenger' 

 Copepoda evidently represent two forms, but neither of them are identical with Dana's Pontella 

 strenua. Fig. 17, Plate XLV, seems to be identical with the male fifth pair of Pontella atlantica 

 (M. Edwards). Fig. 18, Plate XLV, appears to be the abdomen of the male of Pontellopsis regalis. 



6. Pontellopsis villosa Brady. 



Pontellopsis villosa Brady, 1883, p. 86, pis. XXXIV & XXXV. 



Monops pilosus Giesbrecht, 1889, p. 28. 



Monops villosus Giesbrecht, 1893, p. 486, pis. 26 & 41. 



Monops edwardsü Claus, 1893 (pars), p. 277. 



Pontellopsis villosa T. Scott, 1893, p. &J, pi. VI, figs. 29 — 34. 



Monops villosus Giesbrecht, 1894, p. 92. 



Pontellopsis villosa Giesbrecht & Schmeil, 1898, p. 148. 



Pontellopsis villosa Sars, 1905 (ó), p. 6. 



One female identical with the above species was found in the plankton collected at 

 Station 138. 



The female of this Pontellopsis is somewhat similar to Pontellopsis armata. The abdomen, 

 however, is composed of a single joint. The abdomen of the female of Pontellopsis armata 

 is two-jointed. 



Pontellopsis villosa has been recorded from the Atlantic and Pacific Oceans, and from 

 the Mediterranean. 



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