REPOKT ON THE PYCNOGONIDA. 



21 



Depth in Fathoms. 



417 (Sars). 



Name. 



one during the cruise of the " Knight Errant " north 

 of Scotland. 



Geographical Distribution. 



(?) 



lGO(Hoekin 

 MS). 



146 to 180 



(G. 0. Sars). 



160(Hoekin 



MS.). 



(1) 25 to 35 



(t) Nijynphnn mixfum, Kr., Nat. Tid.-kr. N. E., i. p. 100. 

 1845. N. mixfum, Kr., Buchholz, Zweite Deutsche 

 Nordpolarfahrt, Crust., p. 397, 1874. N. mixtiim, Kr., 

 G. O. Sars, Prodromus (Archiv. f. Math, og Natur- 

 vid., ii. 366, 1877) = iV. grossipcs, 0. Fahr., Wilson, 

 Pycnogonida of New England, Trans. Connect. Acad., 

 voL V. p. 20, 1880. Wilson thinks the N. miffnm, 

 Kr., is undoubtedly a form of N. gross! pes, 0. Fabr. I 

 also believe it so nearly related to N. grossvpes, that it 

 may be only a variety. Buchholz writes (loc. cif., p. 

 397) : — "Doch muss ich es dahingestellt sein lassen, ob 

 die von Kroyer angegcbene auf dein Verhiiltniss der 

 Liinge des Tarsus zum Endglied beruhende Artunters- 

 cheidung ausreichend ist, um diese Art von der vorigen 

 (N. grossipes, 0. Fabr.) zu trennen." 

 (1) Nijmphon hrevitarse, Kr., Nat. Tidskr. N. E., i. 115, 

 1845. N. hirsutum, Kr., Gronlands Amfipoder, p. 92, 

 1838 (Autoritate, Kroyer) = iV. grossipes, 0. Fabr., 

 Wilson, Pycnogonida of Now England, Trans. Connect. 

 Acad., p. V. 20, 1880. In all probability Wilson is 

 right when he says N. hrevitarse is only a form of N. 

 gross ipiRS. 

 Nijmplwn sluiterii, Hoek, in MS., Pycnogonids of the 

 first two cruises of the W. Barents. A well-character- 

 ised arctic species, with extremely small auxiliary 

 claws, second joint of the palpus longer than third, 

 first tarsal joint longer than second, with a claw 

 at the end of the legs, which is not .shorter than 

 the last joint of the leg, and a truncate oculiferous 

 tubercle. 

 Nijmphon serratum G. 0. Sars, Crustacea et Pycnogonida 

 nova, Arch. f. jNIath. og Naturvid., iv., 471, 1879. An 

 extremely characteristic species, with a large spiue 

 dorsally on the first three segments of the trunk. 

 {VjNijrnphon brevirosfris, Hodge, Mennell, Eeport on Dredg- 

 ing off the Northumberland Coast and Doggerbank, 

 British Association Eeport, p. 119, 1862. A very 

 unsatisfactorily described species ; in all probability 

 the same as N. hrevitarse, Kr. = N. grossipes 

 0. Fabr. 



pendix, &c., p. ccxxv. 1824); 

 Coast of North America, from 

 the Gulf of St Lawrence, as 

 far south as Long Island 

 Sound (W^ilson), Challenger 

 Exped., Station 49, South of 

 Halifax, U. S. A. 

 Coast of West Norway (Kroyer), 

 lat. 63° 10' 2" W., long. 4° 

 59' 6" E. (Sars) ; East Coast 

 of Greenland, Spitzbergen 

 (Buchholz, loc cif.). 



Coast of Greenland. 



Barents Sea (Hoek in MS.). 



South of Spitzbergen, Barents 

 Sea (Hoek in MS.). 



(?) Northumberland Coast, Dog- 

 gerbank. 



