82 T. THORELL, 
1866. Helophora MENGE, Preuss. Spinn., I, p. 126. 
11866. Stylophora ID., ibid., p. 128). 
1866. Lephthyphantes [Leptyphantes] ID., ibid., p. 131. 
1866. Bolyphantes ID., ibid., p. 134. 
1866. Stemonyphantes ID., ibid., p. 138. 
1866. Drapetisca ID., ibid., p. 140. 
Type: Linyphia triangularis (CLERCK). 
Now that SUNDEVALL has separated Pachygnatha, WESTRING Tapi- 
nopa, and SIMON Argyrodes from LATREILLE'S Linyphia, it appears to me 
that all the remaining European species referred by WALCKENAER to this 
genus, excepting only L. crypticolens WALCK. (Nesticus cellulanus (CLERCK) 
NOB.), may be retained under that generic name. C. KoCH has removed from 
it and made a separate genus of Bolyphantes, in which he at first also in- 
cluded a couple of species of the genus Chiracanthium, which he however 
since removed from that place. I cannot persuade myself that the genus 
Bolyphantes is sufficiently distinctly characterised to deserve to be retained, 
although it has been adopted by OHLERT and some others. The number of 
teeth on the palpal claw, on which OHLERT appears to lay the principal 
stress in determining the limits of Linyphia and Bolyphantes, affords a 
characteristic peculiar only to the female, and moreover that number is too 
different in the most nearly related species (8 in e. g. Bol. or Lin. alticeps, 
3 or 4 in Bol. alpestris or Lin. luteola BLACKW.) to be allowed any great 
importance; neither can I find in the position of the eyes any constant dif- 
ference between these two genera. 
BLACKWALL has combined certain species of WALCKENAERS Liny- 
phia with some forms of that writers Argus or WESTRING'S Erigone into a 
‘separate genus JVeriene, which appears to me to include elements to differ- 
ent to be natural. Even had it been natural, there was no occasion for a 
new name, for it contains species, which had already received from SAVIGNY 
and AUDOUIN the generic name of Ærigone. Judging from the characters 
assigned by BLACKWALL to Linyphia and Neriene, it would seem that the 
latter genus differs from the former principally in having the 1* and 4^ 
pairs of legs equally long or nearly so, whereas in Linyphia the 1* pair is 
longer than the rest. The maxillee are dilated at the extremity and inclined 
or curved towards the lip in Neriene, straight or slightly inclined towards 
the lip and somewhat quadrate in Linyphia. The genus Walckenaera, accor- 
ding to BLACKWALL, is distinguished from JVeriene by having the maxillæ 
1) Pedina Agass. [Echin.] 1840. — Stylophora Ros.-Desy. [Dipt.] 1830. 
