1 to 2 
60 (Wilson) 
220 (Sars) 
67 (Hoek in 
MS.). 
Shore; ‘ ma- 
jores etiam 
in profundo” 
(Oth. Fabr. 
Fauna 
Groenl) 
50,20 to 100 
(Wilson) 
83 (Chal- 
lenger). 
540 (“Knight | 
Errant”. | 
THE VOYAGE OF H.M.S. CHALLENGER. 
Name. 
*Nymphon fuscum, n. sp. This species too seems to be 
closely allied to V. gracilipes, Miers. 
*Nymphon longicollum, n. sp. The only specimen of this 
true deep-sea species shows very characteristic fea- 
tures. 
Nymphon gracile, Leach, Zool. Mise., vol., i. p. 45, 1814. 
N. gracile, Leach, Johnston, An Attempt, &ec., in Mag. 
of Zool., 1837. WN. gracile, Leach, Hoek, Ueber 
Pyenogoniden, Nied. Arch. f. Zool., iii, 1877. It 
has been suggested by Kroyer that it might be the 
same as N. grossipes, O. 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 JN. grossipes, O. Fabr., as de- 
seribed by Kroyer. 
Nymphon megalops, G. O. Sars (Prodromus descriptio- 
nis, &e., Arch. f. Math. og Naturvid., ii. 366, 1877). 
Not figured. Prof. Sars kindly sent me a pencil- 
drawing, and from this drawing and his Latin diagnosis 
I believe the species is nearly related to NV. gracilipes, 
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 
NV. mixtum, Kr., that it may, perhaps, be only a variety 
of that species, andin that case, of course, of J. 
grossipes, O. Fabr.; however Wilson (Pycnogonida 
of New England, Trans. Connect. Acad., vol. v. 
p. 19, 1880) believes it a good species, 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, Oth. Fabr. (sp.), 1780. Pyeno- 
gonum grossipes, Oth. Fabr., Fauna Groenlandica, p. 
229, 1780. (3) Phalangium grossipes, Linn., Syst. 
Nature, xii. 1027, 1766 (2). (?) Mymphon grossipes, 
Fabr., Entom. System. emendata et aucta, tom. iv. 
p. 417, 1794 (%). MN. grossipes, Oth. Fabr., Kréyer, 
Bidrag till Kundskab, Nat. Tidskr., N. R., i. 108, 
1845, NV. grossipes, Oth. Fabr., Wilson, Pyenogon. 
of New England, Trans. Connect. Acad., v. 21, 1580. 
The species is best known from the descriptions 
of Kroyer and Wilson. Three specimens were ob- 
tained during the Challenger Expedition, and a single 
Geographical Distribution. 
Kerguelen. 
Off Coast of Chili (Station 298, 
Challenger Expedition). 
British Seas every where (Leach), 
Dutch Coast (Texel) (Hoek). 
Lat. 63° 10’ 2” N., long. 4° 59’ 
6” EF. Lat. 64° 36’ N., long. 
10° 21’ 5” EB. 
Between Celebes and Halma- 
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, Pyenogoniden 
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- 
