306 
LINYPHIlDiE. 
Walckenaera depressa. PI. XXI, fig. 221. 
*■ ' ’ '' ‘ • - . ‘ ' • ■ " ■ ' t , • . • •• 
Walckenaera depressa, Blackw., Lond. and Edinb. Phil. Mag., third series, vol. viii, 
p. 482. 
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. ix, 
p. 465. 
Length of the female,_^th of an inch; length of the cephalo-thorax, Ath, breadth, ^nd ; 
breadth of the abdomen, 5 ' 5 th; length of an anterior leg, T ' B th; length of a leg of the third 
pair, ^th. 
The abdomen is broad and oviform, but depressed, and somewhat pointed at the spinners; 
it projects over the base of the cephalo-thorax, is thinly clothed with hairs, glossy, and of a 
brownish-black hue, that of the branchial opercula being dark-brown. The cephalo-thorax 
has a short oval form ; it is glossy, convex, prominent but obtuse before, where the eyes are 
situated, depressed in the posterior region, and without an indentation in the medial line; 
the falces are moderately strong, conical, and slightly inclined towards the sternum, which is 
broad and heart-shaped. These parts, with the maxillae, lip, legs, and palpi, are of a dark- 
brown colour, the cephalo-thorax, sternum, and lip being much the darkest, and the legs and 
palpi having a tinge of red. The two superior tarsal claws are curved and pectinated, and 
the inferior one is inflected near its base. The cephalo-thorax, sternum, and abdomen, are 
marked with minute punctures. 
The male is smaller than the female, but it closely resembles her in colour. The cubital 
and radial joints of its palpi are short; the latter is the larger, and has two small apophyses 
at its extremity, in front; the digital joint is oval, convex and hairy externally, concave 
within, comprising the palpal organs, which are highly developed, complicated in structure, 
with a curved process at the extremity projecting beyond the end of the joint, and are of a 
dark, red-brown colour. 
Adult males of Walckenaera depressa were detected under stones in a wood at Oakland 
in April, 1835, and in June, 1837, both sexes were procured in the same locality. It occurs 
also in Berwickshire, in which county Mr. J. Hardy took an adult female in 1858. 
Walckenaera pratensis. PI. XXI, fig. 222. 
Walckenaera pratensis, Blackw., Annals and Mag. of Nat. Hist., third series, vol. viii, 
p. 445. 
Length of the female, |th of an inch; length of the cephalo-thorax, T ' s th, breadth, ~th; 
breadth of the abdomen, ^th; length of a posterior leg, B th; length of a leg of the third 
pair, Jth. 
The eyes are disposed on the anterior part of the cephalo-thorax in two transverse rows; 
