310 
LINYPIIIIDiE. 
breadth of the abdomen, ^th; length of an anterior leg, T ' 0 th; length of a leg of the third 
pair, T ’ T th. 
The cephalo-thorax is oval, convex, glossy, prominent before, with a minute indentation 
in the medial line; the sternum is broad and heart-shaped; the falces are moderately strong, 
conical, vertical, and armed with teeth on the inner surface. These parts, with the maxillae 
and lip, have a brownish-black tint, the maxillae being the brownest. The legs are of a red- 
brown colour; the anterior and posterior pairs, which are the longest, are equal in length, 
and the third pair is the shortest; 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 
abdomen is oviform, convex above, projecting over the base of the cephalo-thorax; it is 
sparingly clothed with hairs, glossy, and of a black hue, that of the branchial opercula and 
spinners being dull, yellowish-brown. 
In external structure the male differs from the female in several particulars; its posterior 
is longer than its anterior pair of legs, and the anterior prominence of its cephalo-thorax, 
which is more elevated, is divided into two segments at its summit by a deep, transverse 
groove, each segment being surmounted by a tuft of fine hairs inclined towards the groove 
and forming a crest. One pair of eyes is seated on the hinder part of the posterior segment, 
near its summit, and another pair is situated near the summit of the anterior segment, in 
front, describing with the former an elongated trapezoid, whose shortest side is before; the 
other eyes are disposed in pairs on the sides of the frontal prominence, and are contiguous ; 
the eyes of each lateral pair are the largest, and those of the anterior pair of the trapezoid are 
the smallest of the eight. The cubital joint of the palpi is clavate, and the radial joint has 
two apophyses at its extremity; the larger terminates in a point curved outwards in front of 
the digital joint, and the smaller projects underneath; the digital joint is oval, convex and 
hairy externally, concave within, comprising the palpal organs, which are highly developed, 
with several curved, spine-like processes, and are of a dark, red-brown colour. 
Mr. Thomas Blackwall discovered this species in October, 1832, under stones and on 
rails in the neighbourhood of Manchester. It has since been met with in similar situations 
near Llanrwst, and has also been taken near Bradford in Yorkshire by Mr. R. H. Meade. 
Walckenaera antica. PI. XXI, fig. 225. 
Walckenaera antica, Blackw., Annals and Mag. of Nat. Hist., second series, vol. ix, 
p. 465. 
— apicata, Blackw., Linn. Trans., vol. xviii, p. 637. 
Theridion anticum, Wider, Museum Senckenb., Band i, p. 331, taf. 15, fig. 1. 
Micryphantes tibialis, Koch, Die Arachn., Band iii, p. 47, tab. 89, fig. 303; and 
Band viii, p. 107, tab. 383, fig. 675. 
Argus anticus, Walek., Hist. Nat. des Insect. Apt., tom. ii, p. 357. 
— apicatus, Walek., Ibid., tom. iv, p. 509. 
Length of the female, T \>th of an inch; length of the cephalo-thorax, ^th, breadth, ^nd, 
