PHILODROMUS. 
99 
form of a crescent, those constituting its cusps, which are seated on small tubercles, being 
the largest. 
The male is smaller than the female, and its cephalo-thorax is of a dark-brown colour, 
with a broad band of a paler hue extending along the middle, and narrow, yellowish-white 
margins. The falces, maxillae, lip, sternum, legs, and palpi are of a deep-brown 
colour, the digital joint of the palpi and the base of the lip being much the darkest, and the 
falces having a tinge of red. The radial joint of the palpi projects three apophyses from its 
extremity ; one, situated on the under side, is short, strong, and furnished with two pointed 
prominences ; another, which is longer and acute, occurs on the outer side ; and the third, 
which is very small, is in front; the digital joint is somewhat oval, but prominent on the 
outer side ; it is convex and hairy externally, concave within, comprising the palpal organs, 
which are highly developed, not very complex in structure, with a tine spine curved from the 
inner side round their extremity, and are of a very dark, reddish-brown colour. The 
prevailing hue of the abdomen is dark-brown, approaching to black; on the upper part it is 
freckled with white, and the oblong-oval band extending along the middle of its anterior half 
is imperfectly defined by an obscure border of whitish hairs; the sides have a brown hue ; 
and that of the branchial opercula is dark-brown. The hairs on the cephalo-thorax and 
abdomen of adult individuals of this sex reflect brilliant tints of green and purple, when viewed 
in a strong light. 
Affecting the same localities as Plrilodromus variatus, this spider pairs in May; and in 
June the female spins a cell of white silk, in which she constructs a lenticular cocoon of a slight 
texture, measuring one fourth of an inch in diameter, and deposits in it between sixty and 
seventy spherical eggs of a pale-yellow colour, not agglutinated together. A near resemblance 
may be traced between Philodromus mistus and Philodromus cespiticolis, Walck. 
Philodromus aureolus. PI. V, fig. 59. 
Philodromus aureolus, Walck., Hist. Nat. (les Insect. Apt., tom. i, p. 556. 
— — Sund., Yet. Acad. Handl., 1832, p. 223. 
—- — Blackw., Annals and Mag. of Nat. Hist., second series, vol. viii, 
p. 38. 
Thoniisus ■—- Hahn, Die Arachn., Band ii, p. 57, tab. 62, figs. 144, 145. 
Length of the female, ’th of an inch; length of the cephalo-thorax, T ' T th, breadth, T ' a th; 
breadth of the abdomen, jth; length of a leg of the second pair, |ths; length of a posterior 
leg, 3 3 ds. 
The eyes are disposed on the anterior part of the cephalo-thorax in the form of a 
crescent, those constituting each lateral pair being seated on distinct tubercles. The cephalo- 
thorax is broad, convex, slightly compressed before, rounded on the sides, and of a brownish- 
red colour, obscurely mottled with pale-yellow, a broad band of the latter hue extending along 
the middle. The falces are small, conical, and vertical; the maxillae are gibbous near the 
