WALCKEN AER A. 
295 
Walckenaera fuscipes. PI. XX, fig. 209. 
Walckenaera fuscipes, Blackw., Lond. and Edinb. Phil. Mag., third series, vol. viii, 
p. 481. 
— — Blaclcw., Annals and Mag. of Nat. Hist., second series, vol. ix, 
p. 273. 
Length of the male, #h of an inch; length of the cephalo-thorax, ^th, breadth, g ' 5 th; 
breadth of the abdomen, ^nd; length of an anterior leg, ^th ; length of a leg of the third 
pair, ^th. 
The cephalo-thorax is oval, convex, glossy, with a slight indentation in the medial line ; 
the anterior part, which is prominent and acute, is compressed, and deeply indented on the 
sides, and has a slight indentation above; in front it is divided into two segments by a trans¬ 
verse groove; the falces are conical, armed with teeth on the inner surface, and inclined 
towards the sternum, which is broad and heart-shaped; the legs are provided with hairs; the 
two superior tarsal claws are curved and pectinated, and the inferior one is inflected near its 
base. These parts, with the maxillae and lip, are of a brown colour. The eyes are distributed 
in pairs on the anterior prominence of the cephalo-thorax; one pair is situated on the summit 
of its superior segment, and another on a small protuberance on the upper part of the inferior 
segment, in front; these eyes describe a narrow trapezoid, whose anterior side is the shortest; 
the two other pairs are seated on the sides of the frontal prominence, and the eyes constituting 
each are contiguous. The palpi have a brown tint, the radial and digital joints being much 
the darkest; the radial joint terminates in two apophyses; one, which is large, depressed, and 
hairy, overlaps the base of the digital joint, and the other, which is small, projects on the inner 
side; the digital joint is oval, convex and hairy externally, concave within, comprising the 
palpal organs, which are highly developed, not very complex in structure, and of a brown 
colour, tinged with red. The abdomen is oviform, convex above, and projects over the base 
of the cephalo-thorax; it is thinly clothed with hairs, glossy, and of a brownish-black hue; 
that of the branchial opercula being pale-yellow. 
Adult males of this species were found under stones at Oakland, in March, 1835. 
Walckenaera punctata. PI. XX, fig. 210. 
TValckena'era punctata, Blackw., Linn. Trans., vol. xviii, p. 629. 
_ — Blackw., Annals and Mag. of Nat. Hist., second series, vol. ix, 
p. 274. 
Argus trapezo'ides, Walck., Hist. Nat. des Insect. Apt., tom. iv, p. 503. 
Length of the female, Tg th of an inch; length of the cephalo-thorax, 5 ' 5 th, breadth, ®th; 
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