m. 
62 SALTlCIDiE. 
by a faint, red-brown, parallel line, and an obscure, whitish line bisects the angular space 
comprised between the diverging branches of the medial line ; on the under part there is an 
obscure, dark band, which tapers gradually from the sexual organs to the spinners ; and the 
branchial opercula have a pale-yellow hue. 
This addition to our indigenous Saltici has been made through the liberality of the 
Rev. Leonard Jenyns, M.A., F.L.S., from whom it was received in February, 1853, together 
with numerous specimens of spiders which had been captured in Cambridgeshire. 
Salticus Blackwallii. PI. Ill, fig. 34. 
Salticus Blackwalli, Clark, Annals and Mag. of Nat. Hist., second series, vol. xvi, 
p. 329. 
— — Blaekw., Annals and Mag. of Nat. Hist., second series, vol. xx, 
p. 498. 
Length of the female, Jd of an inch; length of the cephalo-thorax, jth, breadth, ^th; 
breadth of the abdomen, ^th; length of a posterior leg, gths; length of a leg of the second 
pair, 5 th. 
The cephalo-thorax is large, glossy, slightly pubescent, nearly quadrilateral, abruptly 
sloped behind and prominent before, projecting beyond the base of the falces; it is of a 
fulvous colour, with the entire space between the eyes, a line extending along the middle of 
its posterior half, numerous spots and several oblique lines in that region converging towards 
the centre, and the lateral and posterior margins of a black hue ; the frontal margin is densely 
covered with longish, pale-yellow hairs. The falces are small, subconical, vertical, and armed 
with a few teeth on their inner surface; the maxillae are short, straight, and enlarged, and 
rounded at the extremity; the lip and sternum are oval, the latter being narrower at its 
anterior than at its posterior extremity. These parts are of a yellowish-brown colour, a short 
streak on the outer side of the falces, a spot on the inner surface of the maxillae, the base and 
outer side of the lip, and the margin of the sternum, being black. The legs are robust, 
particularly those of the anterior pair, and are provided with hairs and sessile spines, two 
parallel rows of the latter occurring on the inferior surface of the tibiae and metatarsi of the 
first and second pairs; the fourth pair is the longest, the first pair rather surpasses the third, 
and the second pair is the shortest; their colour is yellowish-brown, with black spots on the 
upper part of the femora and tibiae, disposed in a longitudinal row; the anterior legs are 
marked with black spots on the sides, and those on the superior surface of their femora are 
confluent; each tarsus is terminated by two curved claws, and below them there is a small 
scopula. The palpi, which resemble the legs in colour, have a single, minute black spot on 
the inner surface of the cubital joint. The abdomen is of an oblong-oviform figure, convex 
above, projecting a little over the base of the cephalo-thorax; it is thinly clothed with hairs, 
and of a yellowish-brown colour; on each side of the medial line of the upper part there is a 
longitudinal band, composed of large, confluent, black spots; these bands converge to their 
