30 
LYCOSIDiE. 
Length of the female, |th of an inch; length of the cephalo-thorax, |th; breadth, T ' T th; 
breadth of the abdomen, T ' 5 th; length of a posterior leg, Mths; length of a leg of the third 
pair, T 3 B ths. 
The lateral eyes of the four forming the anterior row are smaller than the intermediate 
ones. The cephalo-thorax is large, hairy, and of a dark-brown colour; a narrow, pale, 
yellowish-brown band extends along its middle, and two parallel lines of the same hue occur 
above each lateral margin. The falces are conical, armed with a few teeth on the inner 
surface, and have a reddish-brown hue. The sternum is heart-shaped, of a very dark-brown 
colour, approaching to black, and is sparingly covered with whitish hairs. The maxillee have 
a pale, reddish-brown hue ; and that of the lip is dark-brown, being palest at the extremity. 
The legs and palpi are long, and are provided with hairs and strong spines; their colour is 
pale-reddish or yellowish-brown, with spots and longitudinal streaks of a brownish- 
black hue on the upper part and sides, which are most conspicuous on the thighs and on the 
humeral joint of the palpi. The abdomen is oviform, hairy, convex above, projecting over 
the base of the cephalo-thorax; the colour of the upper part is dark-brown; a large, black, 
angular mark occurs at its anterior extremity, and within the vertex of the angle and on 
each side of it there is a small tuft of yellowish-white hairs; to this mark succeeds an 
oblong-oval band, of a pale, yellowish-brown colour, faintly bordered with black, which 
extends rather more than a third of its length, and on each side of the posterior half of the 
medial line there is a series of black and white spots disposed alternately, the latter being 
much the smaller; the two series, which in some individuals are rather obscure, converge to 
the spinners, where they meet; the colour of the sides is yellowish-brown, spotted with dark- 
brown, and the under part has a pale-reddish, or yellowish-brown tint; the sexual organs, 
which have a longitudinal septum in the middle, are of a red-brown colour; and that of the 
branchial opercula is very dark-brown. 
The male is rather smaller and darker coloured than the female. The base of the 
humeral joint and the entire digital joint of the palpi are of a brownish-black hue; the cubital 
and radial joints are short, the latter being the larger, and the digital joint, which is oval, 
is terminated by a small, curved claw; it is convex and hairy externally, concave within, 
except at the extremity, which is compact, and comprises the palpal organs ; they are highly 
developed, complex, with corneous processes, and are of a very dark, reddish-brown colour. 
Heaths and pastures are the localities most frequented by this species, which is often 
plentiful in such situations. In June the female constructs a lenticular cocoon, of compact, 
yellowish, or greenish-brown silk, encircled by a whitish zone of a slighter texture; it 
measures one sixth of an inch in diameter, and contains between fifty and sixty yellowish- 
white eggs, of a spherical figure. 
Both immature and adult individuals of this spider, which is nearly allied to the Lycosa 
(. Pcirdosa ) monticola of M. Koch (‘Die Arachn./ Band xv, p. 42, tab. 515, figs. 1445-1447, 
and tab. 516, figs. 1448, 1449), employ their silken lines to effect aerial excursions, ascending 
currents of rarefied air, frequently acting on the lines with sufficient force to raise the adven¬ 
turous aeronauts into the atmosphere. 
Inhabits Scotland. 
