490 Mr. Blackwall on undescribed Species of Araneidze. 
tx; breadth of the abdomen +; length of a leg of the second pair 4; 
length of a leg of the third pair 4. 
I discovered the female of this species, which seems to belong to the 
section Cancroides, in September 1834, in the woods at Oakland, on the 
trunks of trees which had been felled. In July it constructs a lenticular 
cocoon of white silk, of a compact texture, measuring about 4th of an inch 
in diameter, in which it deposits between 80 and 90 spherical eggs, of a 
pale yellowish white colour, not agglutinated together. The cocoon is 
often placed between two leaves connected by a slight tissue of silk, form- 
ing a kind of sack, usually containing the female, which sits upon the 
cocoon and is greatly attached to it. 
Tribe, CITIGRADZ, Lege 
Genus, Lycosa, 
Lycosa exigua. 
Cephalothorax large, hairy, somewhat oval, compressed before, with de- 
pressed, sloping sides, and a narrow indentation in the medial line of the 
posterior region; its colour is dark brown, with three longitudinal bands 
of a pale yellowish brown tint, one extending along each side, and the 
third occupying the carina. Mandibles strong, conical, armed with a few 
teeth on the inner surface, reddish brown, and inclined towards the pectus, 
which is heart-shaped, of a very dark brown colour, approaching to 
black, and is thinly covered with whitish hairs. Maxillz short, powerful, 
straight, enlarged and rounded at the extremity, and of a pale reddish 
brown colour. Lip quadrate, and of a dark, dull brown colour, being palest 
at the apex. Eyes unequal in size; four, which are minute, form a row 
in front, the two exterior ones being the smallest; the other four are 
placed on the sides of the anterior part of the cephalothorax, and form a 
square nearly, the anterior pair being the largest of the eight. Legs and 
palpi long, moderately robust, and provided with hairs and strong spines ; 
they are of a pale reddish brown colour, with spots and longitudinal streaks 
of a brownish black hue on the upper part and sides; these spots and 
streaks are most conspicuous on the thighs, and on the second joint of the 
palpi. The palpal claw is curved and pectinated. Each tarsus has two 
curved, deeply pectinated claws at its extremity. Abdomen oval, hairy, 
convex above, projecting over the base of the cephalothorax ; it is dark 
brown on the upper side, with three yellowish white spots in front, the 
intermediate one, which is the largest, and is faintly bordered with brownish 
black, extending backwards nearly half the length of the abdomen; on 
each side of the medial line, on the posterior half of the abdomen, occurs 
a series of alternate blackish and white spots, the latter being much the 
smaller; the two series, which are rather obscure in some specimens, con- 
verge to the spinners, where they meet; the sides are yellowish brown, 
spotted with dark brown; the under side is pale yellowish, or reddish 
brown. Plates of the spiracles very dark brown. 
Length, from the anterior part of the cephalothorax to the extremity of 
the abdomen, 1th of an inch; length of the cephalothorax 4; breadth 5; ; 
breadth of the abdomen +',; length of a posterior leg 44.; length of a leg 
of the third pair 53,. 
The male is rather smaller than the female, and darker coloured, but the 
relative length of its legs is the same. The third and fourth joints of the 
palpi are short, the latter being the stronger of the two: the fifth joint is 
oval and pointed at the extremity, which is armed with a small claw; it is 
convex and hairy externally, concave within, except at the end, which 
is solid, and comprises the palpal organs; they are highly developed, com- 
