PYCNOGONIDA. 



35 



e. e. The claws long, thin. 



f. The fingers of the chelae short. 



f. f. The fingers of the chelae long. 



a. a. The trunk hairy. 



g. The fingers of the chelae dentate. 

 (The auxiliary claws well developed), 

 h. The hair-covering spread, fine. 



h. h. The hair-covering dense, coarse. 



g. g. The fingers of the chelae simple, strongly arcuate. 

 (The auxiliary claws rudimentary). 



9. N. longitarse Kr. 



10. N. Groenlandicum n. sp. 



11. N. elegans Hans. 



12. N. leptocheles G. O. Sars. 



13. N. macrum Wils. 



14. N. macronyx G. O. Sars. 



15. N. spinosum Goods. 



16. N. tenellum G. O. Sars. 



17. N. robusturn Bell. 



i. Nymphon grossipes Fabr. 



Pycnogonum grossipes O. Fabricius, Faun. Groenl., 1870, p. 229. 

 Nymphon grossipes Kroyer, Kundsk. Pycnog., 1844, p. 108. 



Idem, Gaimard, Voy. Scand. Lappon., 1849, pi. 36. Fig. i, a-h. 

 Wilson, Syn. Pycnog. New-Engl., 1878, p. 20. PI. VII. Fig. i, a-q. 

 Hansen, Kara-Hav. Pycnog., 1886, p. 16. Tav. XVIII. Fig. 8, 8 a. 

 Sars, Pycnogonidea, 1891, p. 65. PI. VI. Fig. 2, 2 a-i. 

 Nymphon mixtum Kroyer, Kundsk. Pycnog., 1844, p. no. 



Idem, Gaimard, Voy. Scand. Lapp., 1849, PI. 35. Fig. 2, a-f. 

 Hansen, Fortegn. dansk. Pycnog., 1884, p. 649. 

 Idem, Zool. Dan., 1885, p. 128. Tab. VII. Fig. 19. 

 Sars, Pycnogonidea, 1891, p. 68. PL VI. Fig. 3, 3 a-i. 



I cannot side with Sars in considering the ./V. mixtum of Kroyer as a good species, but 

 must agree with Wilson in uniting N. grossipes and N. mixtum; perhaps I may also be allowed to 

 point out that Hansen in his list of Danish Pycnogonida seems inclined to approve of such a union. 



Occurrence. The Ingolf-stations 2, 31, 87, 95, 127 state it to be taken in the Davis Strait, 

 the Denmark Strait, as well midway between Greenland and Iceland as nearer to the latter island, 

 in the mouth of Bredebugt; further also in the Greenland Sea, and finally as far south as the 

 boundary of the Norwegian Sea midway between the Faroe Islands and Iceland. The depths were from 

 50 752 fathoms (Danish). 



Further it is found at the Zoological Museum from many localities. When it has been called 



by other names than that of N. grossipes, the name in question has been added in a parenthesis. 



5* 



