64 
SALTlCIDiE. 
yellowish-white hairs; the fourth pair is the longest, then the first, and the second pair is the 
shortest; each tarsus has two curved, slightly pectinated claws at its extremity^ The palpi 
are short, and resemble the legs in colour. 
The male bears a general resemblance to the female, and the relative length of its legs is 
the same; but it is smaller, darker coloured, and the grayish band extending along the 
middle of the upper part of the abdomen is much less distinctly marked, and sometimes com¬ 
prises black, angular lines, whose vertices are directed forwards. The maxillae have a short, 
pointed process at the extremity, on the outer side. The palpi are short, strong, and of a 
very dark-brown colour; the humeral joint has an obtuse protuberance near its extremity, on 
the inner side, and the radial joint has a strong, curved, pointed apophysis at its extremity, 
on the outer side; the digital joint is broad, oval, convex and hairy externally, concave within, 
comprising the palpal organs, which are highly developed, complicated in structure, and very 
prominent, projecting at the base in a convexity extending upwards to the articulation of the 
cubital with the radial joint; they are somewhat pointed at the extremity, have two prominent, 
corneous, black processes at the base, towards the outer side, and are coloured with different 
shades of brown. 
In the summer of 1845, Miss Ellen Clayton, of Lancaster, captured specimens of 
Salticus tardigradus at Balham, in Surrey. A female, which was placed in a phial, spun a sac 
of fine, white silk in June, and attached to its inner surface a lenticular cocoon of delicate, 
white silk, of a loose texture, measuring one third of an inch in diameter, in which she 
deposited thirty-five spherical eggs, of a pale-yellow colour, not agglutinated together. 
M. Koch’s figure, number 1130, is stated to represent a female in the text, but a male is 
delineated in the plate. 
Salticus formicarius. PI. Ill, fig- 36. 
Salticus formicarius , Latr., Gen. Crust, et Insect., tom. i, p. 124. 
_ — Sund., Yet. Acad. Handl., 1832, p. 200. 
_ _ Koch, Die Arachn., Band xiii, p. 33, tab. 438, figs. 1101, 1102. 
_ _ Blackw., Annals and Mag. of Nat. Hist., second series, vol. vii, 
p. 448. 
Attus — Walck., Hist. Nat. des Insect. Apt., tom. i, p. 470. 
Length of the female, 1th of an inch. 
The cephalo-thorax is long, and slopes abruptly in the posterior region; it is of a 
brownish-red colour, the anterior and most elevated part being black. The falces, maxillae, 
lip, and sternum, are of a dark, reddish-brown hue. The legs have a reddish-brown colour, 
the thighs of the anterior pair being much the darkest, and are marked with longitudinal 
black lines; the fourth pair is the longest. The palpi, which are of a reddish-brown hue, 
have the digital joint somewhat dilated. The abdomen is of an oblong-oviform figure, and is 
divided into two nearly equal parts by an irregular, transverse, white line, whose continuity 
