416 REV. O. P. CAMBRIDGE ON NEW BRITISH SPIDERS. 
. smaller size, and in general by the greater distinctness of the abdominal pattern, which 
has also in many specimens a longitudinal central pale line on the fore half of its upper 
side, not existing, as far as I have observed, in 4. brunnea. The projection at the outer 
extremity of the radial joints of the palpi is also shorter, stouter, and straighter than in 
A. brunnea ; and the palpal organs also differ in their structure from those of that species. 
The present species is abundant at heath-roots and among grass and rubbish in 
hedges dc. at Bloxworth, while Agelena brunnea is very rare. Egg cocoons, resembling 
in form that figured in * British and Irish Spiders, parti. pl. xii. fig. 102, are also 
common in the same localities. I find them attached to the stems of grass and rushes, 
sometimes beautifully white and clean, but generally covered with a crust of mud. I 
have hatched young spiders from some of these cocoons, but have never succeeded in 
rearing them to a sufficiently mature state to be able to decide their species, though 
sufficiently so to see that their genus is the same as that of the species now in question. 
Dr. Koch, of Nuremberg, to whom I have submitted adult specimens of 4. proxima, 
agrees with me as to its distinctness from 4. brunnea (Agreca linotina, Koch), and says 
he has found the female lately near that city. The figures given will explain better than 
any lengthened description the differences above mentioned between the two species. 
Dr. Koch includes both these species in his genus Agræca of the family Drassides, in 
which I am inclined to agree; certainly they should be separated from the genus 
Agelena. x 
| Genus TEGENARIA. 
TEGENARIA INTRICATA. 
Tegenaria intricata, Koch, Die Arachn. Bd. viii. p. 29, pl. 261. figs. 610, 611. 
—— domestica, Blackw. Brit. € Ir. Spiders, p. 163, pl. xi. fig. 105. 
Upon a careful examination I am inclined to agree with Dr. L. Koch that the Tege- 
naria domestica, Koch, is the true T. domestica, Latr. Undoubtedly the British 
species known as T. domestica is the T. intricata of Koch (loc. cit. sup.), which latter 
name should therefore replace the specific name by which we have hitherto known it. 
Genus THERIDION. 
THERIDION INSTABILE, n. sp. (Pl. 55. no. 14.) 
Male adult, length 4; of an inch. 
Cephalothorax brightish yellow, with a broad longitudinal band of a blackish colour 
extending from the eyes to the hinder margin, towards which it narrows gradually. In 
some specimens it is slightly constricted at the junction of the caput and thorax. Caput 
well defined, rather elevated, projecting forwards, and with a few longish bristly hairs on 
its upperside directed forwards. The height of the clypeus exceeds the space between 
the central pairs of eyes of the front and hinder rows, and projects beyond the perpen- 
dicular line of the caput. 
Eyes eight, nearly equal in size, the foremost ones of the side pairs slightly the — 
smallest; the space between those of the central pair of the hinder row very little greater — 
than between each of these and the hinder eye of the lateral pair on its side; those of — 
