LYCOSA. 
33 
black spots of both series are connected by obscure, black, angular lines, each comprising a 
white spot within its vertex; the sides are mottled with dull olive-brown, vellowish- 
brown, and white ; and the under part has a yellowish-brown tint; the sexual organs, which 
have a longitudinal septum in the middle, are of a red-brown colour; and that of the spinners 
is dark-brown. 
The male is smaller and paler than the female; but it resembles her in the general 
distribution of its colours. The base of the thigh of each anterior leg is black. The axillary 
and humeral joints of the palpi have a dark-brown hue ; the colour of the cubital and radial 
joints, which are short, is yellowish-brown; and the digital joint has a dark, reddish-brown 
tint. This last joint is of a slender, elongated, oval form, convex and hairy externally, and 
concave underneath, near the base; this concavity comprises the palpal organs, which are 
slightly developed, and of a dark, reddish-brown colour. 
Adult males and females of this handsome spider were taken on swampv ground in 
woods at Oakland, near Llanrwst, in May, 1839. The decidedly curved form of the maxillm, 
an approximation to which may be observed in Lycosa campestris, Lycosa allodroma, and some 
other species, has not been considered of sufficient importance to require its separation from 
the genus Lycosa , with the semi-aquatic species of which genus it is very closely allied by its 
general organization, habits, and colours. 
In July and August, the female deposits between sixty and seventy spherical eggs of a 
yellow colour, in a globular cocoon of compact, white silk, which is encircled by a narrow zone 
of a slighter texture, and measures one fifth of an inch in diameter. 
A deficiency of the right intermediate eye of the anterior row has been observed in an 
adult male of this spider. 
M. Walckenaer is certainly mistaken in supposing that Lycosa cambrica is identical with 
Lycosa allodroma (‘Hist. Nat. des Insect. Apt.,’tom. iv, p. 395), for it is not only much 
smaller than that species, but its colours, which are dissimilar, constitute by their arrange¬ 
ment a different design both on the cephalo-thorax and abdomen ; there is some diversity also 
in the structure of its palpal organs, and in the relative size of the four minute eyes forming 
the transverse frontal row. 
Lycosa latitans. PI. II, fig. 15. 
Lycosa latitans, Blackw., Linn. Trans., vol. xviii, p. 612. 
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. vii, p. 397. 
— ( Potamia ) palustris, Koch, Die Arachn., Band xv, p. 4, tab. 505, figs. 1415 and 
1416. 
Length of the female, fill of an inch; length of the cephalo-thorax, T ' 5 th, breadth, J,th; 
breadth of the abdomen, £th; length of a posterior leg, 5 fihs; length of a leg of the third 
pair, 1th. 
5 
