294 
LINYPHIIDiE. 
abdomen is oviform, glossy, sparingly clothed with hairs, moderately convex above, projecting 
over the base of the cephalo-thorax, and has a brown-black hue, that of the branchial opercula 
and spinners being yellowish-white. 
This species, which is closely allied to Walckenaera ciispidata and Walckenaera monoceros, 
was taken at Lyndhurst, by the Rev. O. P. Cambridge, in the summer of 1860. 
Walckenaera obtusa. PL XX, fig. 208. 
Walckenaera obtusa, Blackw., Lond. and Edinb. Phil. Mag., third series, vol. viii, 
p. 482. 
_ — Blackw., Annals and Mag. of Nat. Hist., second series, vol. ix, 
p. 273. 
Length of the male, -1th of an inch; length of the cephalo-thorax, ^th, breadth, 5 gth; 
breadth of the abdomen, ^th; length of an anterior leg, *ths; length of a leg of the third 
pair, |th. 
The cephalo-thorax is oval, convex, glossy, with a slight indentation in the medial line, 
and the sternum is oblong heart-shaped. These parts, with the falces, maxillae, and lip, have 
a dark,brownish-black hue. The legs are hairy, and have a bright-rufous tint; the two 
superior tarsal claws are curved and pectinated, and the inferior one is inflected near its base. 
The palpi resemble the legs in colour; the cubital joint is clavate, and the radial joint, which 
is short, terminates in three apophyses; the largest curves outwards before the digital joint, 
the next in size is exterior to this, and has a small, pointed process at its base, in front, and 
the smallest is situated underneath; the digital joint is somewhat oval, convex and hairy 
externally, concave within, comprising the palpal organs, which are highly developed, compli¬ 
cated in structure, with a strong spine on the outer side, curved in a circular form, and are of 
a brownish-black colour, tinged with red. The abdomen is oviform, convex above, and pro¬ 
jects over the base of the cephalo-thorax; it is sparingly clothed with hairs, glossy, and of a 
deep-black hue. 
A few males of Walckenaera obtusa, in a state of maturity, were discovered under stones 
at Oakland in February, 1835. Between the male of this species and the male of Walckenaera 
cuspidata there is a striking resemblance ; but the smaller size of the latter, the comparative 
shortness of its sternum, differences in the structure of its palpi, and especially the acute, 
conical prominence situated within the trapezoid formed by the four intermediate eyes, effec¬ 
tually serve to distinguish it from the former. 
