20 



THE VOYAGE OF H.M.S. CHALLENGER. 



Depth in Fathoms. 



120 

 2225 



1 to 2 



229 ; 417 



Name. 



Geographical Distribution. 



825 



GO (Wilson) 



220 (Saiv) 



67 (Hoek in 



MS.). 



Shore; " ma- 

 jores etiam 

 in prof undo" 

 (Otli. Fabr. 

 Fauna 

 Groenl) 



50,20 to 100 

 (Wil.?on) 

 83 (Clial- 

 lenger). 



540 ("Knight 

 Errant". 



'■-Nynqyhon fnsnim, n. sp. This species too seems to be 



closely allied to N. gracilipes, Miers. 

 *N'//mpJion longicoUum, n. sp. The only specimen of tliis 

 true deep-sea species shows very characteristic fea- 

 tures. 

 Niimplion gracile, Leach, Zool. Misc., vol., i. p. 45, 1814. 

 N. gracile, Leach, Johnston, An Attempt, &c., in Mag. 

 of Zool., 1837. N. gracile. Leach, Hoek, Ueber 

 Pycnogoniden, Nied. Arch. f. Zool., iii., 1877. It 

 has been suggested by Kroyer that it might be the 

 same as N. grossiiies, 0. Fabr., but I prefer to retain 

 the name of Leach for the species as known by the 

 description and figures of Mr Johnston and myself, 

 which is distinct from N. grossipes, O. Fabr., as de- 

 scribed by Kroyer. 

 Nymphon megalops, G. 0. Sars (Prodromus descriptio- 

 nis, &c.. Arch. f. Math, og Katurvid., ii. 366, 1877). 

 Not figured. Prof. Sars kindly sent me a pencil- 

 drawing, and from this drawing and liis Latin diagnosis 

 I believe the species is nearly related to N. gracilijies, 

 Miers. 

 * Nymphon perlucidum, n. sp. A very well-characterised 

 species, of which, unfortunately, only one specimen was 

 dredged by the Challenger. 

 Nymphon longitarse, Kr., Bidrag till Kundskab, Natur. 

 Tidskr. N. R, i. 112, 1845, is so nearly related to 

 N. mixtum, Kr., that it may, perhaps, be only a variety 

 of that species, andin that case, of course, of N. 

 grossipes, 0. Fabr. ; however Wilson (Pycnogonida 

 of New England, Trans. Connect. Acad., vol. v. 

 p. 19, 1880) believes it a good spciues, readily dis- 

 tinguished by its extremely attenuated appearance. 

 From the Barents Sea I got some specimens, which 

 unquestionably belong to the form described by 

 Kroyer. 

 *Nymphon grossipes, 0th. Fabr. (sp.), 1780. Pijcno- 

 gonum grossipes, 0th. Fabr., Fauna Groenlandica, p. 

 229, 1780. (?) Phalangium grossipes, Linn., Syst. 

 Natura, xii. 1027, 1766 (?). (?) Nymphon grossipes, 

 Fabr., Entom. System, emendata et aucta, tom. iv. 

 p. 417, 1794 (?). N. grossipes, 0th. Fabr., Kroyer, 

 Bidrag till Kundskab, Nat. Tidskr., N. R., i. 108, 

 1845. N. grossipes, 0th. Fabr., Wilson, Pycnogon. 

 of New England, Trans. Connect. Acad., v. 21, 1880. 

 The species is best known from the descriptions 

 of Kroyer and Wilson. Three specimens were ob- 

 tained during the Challenger Expedition, and a single 



Kerguelen. 



Off Coast of Chili (Station 298, 

 Challenger Expedition). 



British Seas everywhere (Leach), 

 Dutch Coast (Texel) (Hoek). 



Lat. 63° 10' 2" N., long. 4° 59' 

 6"E. Lat. 64° 36' N., long. 

 10° 21' 5" E. 



Between Celebes and Haluia- 

 hera. 



Coast of Greenland and West 

 Norway ; off Halifax, St 

 George's Banks, lat. 61° 47' 

 2" N., long. 3° 18' 5" E. 

 Barents Sea (Hoek in MS.). 



North Sea (Bohm, Pycnogoniden 

 des Museums zu Berlin, 

 Monatsber. der K. Akad, 

 d. Wiss. zu Berlin, 1879); 

 Coast of Norway (Kroyer), 

 Barents Sea (Hoek in MS.), 

 Northern part of the North 

 Atlantic ("Knight Errant," 

 1880) ; East Coast of Green- 

 land (Fabricius, Buchholz) ; 

 North Georgian Islands 

 (Sabine, Suppl. to the Ap- 



