448 REV. O. P. CAMBRIDGE ON BRITISH SPIDERS. 
as observable as the former. The only British examples which I have seen, are two cap- 
tured by myself at Bloxworth, one received some years ago from North Wales, from Mr. 
Blackwall, and one lately received among examples of the three other species above men- 
tioned, from Mr. Meade, of Bradford, Yorkshire; all these agree (but not exactly) with 
the typical examples of E. longipalpis, Westr., received from Sweden from Dr. Thorell: 
Compare the figures given in Pl. XXXIV., no. 24 being Dr. Thorell's type, no. 23 from 
an English example. 
NERIENE DENTIPALPIS. (Pl. XXXIV. no. 21.) 
Theridion dentipalpe, Reuss- Wider, Mus. Senck. i. p. 248, t. 17. fig. 1. 
Erigone dentipalpis, Westr. Ar. Suec. p. 199; Koch, Die Arachn. viii. p. 90, t. 278. figs. 659, 660. 
Neriene dentipalpis, Bl. Ann. & Mag. Nat. Hist. for Oct. 1863; Cambr. Zoologist, 1863, p. 8598. 
This species may be distinguished from the foregoing (N. longipalpis, Sund., Westr.) 
by a small sharp tooth-like spine beneath the radial joint of the palpus, as well as by the 
form of the upper extremity of that joint: this is produced, rather on the outer side, into 
a strong, prominent, and rather spreading lobe, giving the extremity of the joint a 
strongly emarginate appearance, and forming two terminal limbs, of which the outer 
limb, though shorter than the inner one, is broad, obtuse, and spreading. It is a 
common species at Bloxworth, and appears to be generally distributed throughout 
England. Mr. Blackwall (by whom it was first recorded as British) has also found it 
not uncommonly in North Wales. ; 
NERIENE ATRA. (Pl. XXXIV. no. 22.) 
Linyphia longipalpis, Sund. Vet.-Akad. Handl. f. 1829, p. 212, var. £. 
Erigone atra, Bl. Edinb. Philos. Mag. vol. iii. no. 15, p. 195. 
vagabunda, Westr. Ar. Suec. p. 597. 
Neriene longipalpis, Bl. Brit. and Ir. Spid. p. 274, pl. xix. fig. 188, and pl. xxii. fig. C. 
Closely allied to both the foregoing, this species may be distinguished from W. denti- 
palpis by the spine beneath the radial joint of the palpus being generally obsolete; in a 
few instances only that have come under my notice has this spine been visible, and 
then quite rudimentary. The form also of the fore extremity on the upperside of the 
radial joint differs from that of both N. dentipalpis and N. longipalpis (Sund., West.) ; 
in N. atra it is produced rather on its inner half into a broad, obtuse (but not prominent 
nor spreading) prolongation or lobe, having a slight direction towards the outer side, 
whereas in N. dentipalpis the outer extremity of the upperside of the radial joint is pro- 
duced and prominent, and spreading; and in N. longipalpis (Sund., Westr.) the whole 
upper fore extremity of that joint is produced and has a pointed termination. 
This is certainly the species figured * in Bl. Brit. and Ir. Spid. as W. longipalpis, and 
* Dr. Thorell (Synonyms of Europ. Spid. p. 99, just published) says that fig. 188, pl. xix. (Bl. Brit. and Ir. 
Spid.), represents E. dentipalpis (Westr.); but the examples of the palpus there figured were from a specimen fur- 
nished to the artist by myself, an undoubted E. vagabunda (Westr.), with the rudimentary spine beneath the radial 
joint visible; this spine has been exaggerated by the artist, and probably led Dr. Thorell to consider the figure to be 
that of E. dentipalpis. 
