legs in colour, and have a curved, pectinated claw at their extremity. The eyes are arranged
on the anterior part of the cephalo-thorax in the form of a crescent, those constituting its
cusps, which are seated on small tubercles, being the largest.
In summer, when the sun shines brightly, this species may be seen on rails and gates in
the neighbourhood of Llanrwst. Early in June the female constructs a lenticular cocoon of
white silk, of a slight texture, measuring one third of an inch in diameter, in which she
deposits about sixty-four spherical eggs of a pale-yellow colour, not agglutinated together.
Philodromus mistus.
Philodromus mistus, Blackw., Lond. and Edinb. PhiL Mag., third series, vol. x, p. 103.
__ _ Blackw., Annals and Mag. of Nat. Hist., second series, vol. viii,
p. 38.
Length of the female, £ths of an inch; length of the cephalo-thorax, lÿh, breadth, Ath;
breadth of the abdomen, ^,th ; length of a leg of the second pair, ^d ; length of a leg of the
fourth pair, Jfths.
The abdomen is oviform, hairy, convex above, and projects a little over the base of the
Cephalo-thorax ; the upper part is of a pale, yellowish-brown colour, mottled with reddish-
brown, an obscure, oblong-oval band of the latter hue extending from the anterior extremity
along the middle, nearly half of its length; it is encircled by an irregular band of a dark,
reddish-brown colour, from which some imperfectly defined streaks pass obliquely upwards,
particularly in the posterior region ; the sides and under part are of a dull, yellowish-white
hue, minutely spotted with reddish-brown, three red-brown bands extending along the middle
of the latter and meeting in a point near the spinners ; the sexual organs are of a very dark,
reddish-brown colour ; and the branchial opercula have a yellowish-brown hue. The cephalo-
thorax is short, broad, convex, hairy, slightly compressed before, and rounded on the sides ;
it is of a yellowish-brown colour, with a broad; longitudinal, dark-brown band on each side,
and narrow, pale, yellowish-white margins. The falces are conical, vertical* and armed with
one or two very small teeth on the inner surface ; the maxillæ are enlarged where the palpi
are inserted, and gibbous at the base; and the lip is triangular and rounded at the apex.
These parts are of a yellowish-brown colour, the base of the lip being dark-brown. The
sternum is heart-shaped, thinly covered with whitish hairs, and of a yellowish-brown hue,
freckled with minute, blackish spots, which are densest on the sides. The legs are long, provided
with hairs and sessile spines, and are of a pale, yellowish-brown colour, interspersed
with minute, blackish spots, which are scarcely perceptible without the aid of a magnifier ; the
second pair is the longest, then the'first, and the third pair is slightly longer than the fourth ;
each tarsus is terminated by two curved, deeply pectinated claws, and below them there is a
small scopula. The palpi resemble the legs in colour, and have a curved, pectinated claw at
their extremity. The eyes are disposed on the anterior part of the cephalo-thorax in the
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 s id e ; it is convex and hairy externally, concave within, comprising the palpal organs,
which are highly developed, not very complex in structure, with a fine 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 h u e ;
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 Philodromus 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. des Insect. Apt., tom. i, p. 556.
— — Sund., Vet. Acad. Handl., 1832, p. 223.
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. viii,
p. 38.
Thomisus — 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, Ath, breadth, Ath;
breadth of the abdomen, jth ; length of a leg of the second pair, fths ; length of a posterior
leg, S9#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 maxillæ are gibbous near the