18 
LYCOSIDiE. 
brown hue, with a longitudinal septum in the middle ; and the colour of the branchial opercula 
is dull yellow. On the anterior part of each side of this species, and of many of its congeners, 
there is a minute oblong orifice. 
The male is smaller and darker coloured than the female, and the tibiae and metatarsi of 
its anterior pair of legs are of a very dark-brown colour, but that of the tarsi is red-brown. 
The cubital and radial joints of the palpi are short, and the digital joint is of an oblong, oval 
form, being convex and hairy externally, and concave within, at the base; this concavity 
comprises the palpal organs, which are neither highly developed nor very complicated in 
structure, and are of a dark, red-brown colour. 
Lycosa agretyca occurs in old pastures and on heaths in various parts of the kingdom. 
It pairs early in spring, and in June the female excavates an elliptical cavity in the earth 
beneath stones, or selects one suitable for her purpose, into which she retires with her cocoon, 
which is globular, composed of fine white silk, of a compact texture, and is encircled by a 
narrow zone of a slighter fabric; it measures one fourth of an inch in diameter, and contains 
about 110 spherical eggs, of a pale-yellow colour, not agglutinated together. Influenced by 
those instinctive impulses which regulate the economy of the Lycosa, the female attaches the 
cocoon to her spinners by short lines of silk, and the young, when they quit it, mount upon 
her body, and so accompany her in all her movements. This species frequently passes the 
winter in a torpid or semi-torpid state, in cavities in the earth, under stones. 
An adult female Lycosa agretyca , taken in the spring of 1849, was destitute of the posterior 
eye on the right side. 
The genus Trochosa, which M. Koch has proposed to found upon this and some other 
species of Lycosa, is based on specific characters solely. 
Lycosa agretyca has been captured in Scotland by Mr. James Hardy, and in Ireland by 
Mr. Robert Templeton. 
Lycosa campestris. PI. I, fig. 3. 
Lycosa campestris, Walck., Hist. Nat. des Insect. Apt., tom. i, p. 309. 
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. vii, 
p. 257. 
— ruricola, Hahn, Die Arachn., Band i, p. 103, tab. 26, fig. 77 (misnumbered 76 
in the text). 
— — Koch, Uebersicht des Arachn. Syst. erstes Heft, p. 21. 
Trochosa — Koch, Die Arachn., Band xiv, p. 138, tab. 491, figs. 1369, 1370. 
Titulus, 26, Lister, Hist. Animal. Angl. De Aran., p. 78, tab. 1, fig. 26. 
Length of the female, # 5 ths of an inch; length of the cephalo-thorax, 1th, breadth, ^ths; 
breadth of the abdomen, 1th ; length of a posterior leg, ^ths; length of a leg of the third 
pair, Atlis. 
