Cltsbiona holosericea. PI. VII, fig. 75.
Clubiona holosericea, Walck., Hist. Nat. des Insect. Apt., tom. i, p. 590.
— — Latr., Gen. Crust, et Insect., tom. i, p. 91.
— — Sund., Vet. Acad. Hand!., 1831, p. 142.
— — Hahn, Die Arachn., Band i, p. 112, tab. 29, fig. 84.
__ — Koeh, Uebere. des Arachn. Syst., erstes Heft, p. 19.
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. viii,
p. 42.
Length of the female, &ths of an inch; length of the cephalo-thorax, gth, breadth, jth ;
breadth of the abdomen, ^ths; length of a posterior leg, 1 ; length of a leg of the third
pair, |ths.
The eyes form two transverse rows on the anterior part of the cephalo-thorax; the
posterior row is the longer, and the interval between the intermediate eyes is greater than the
space which separates them from the lateral ones of the same row; the anterior row is
situated very near to the frontal margin, and the intermediate, eyes are the largest of the
eight. The cephalo-thorax is somewhat oval, convex, broadly rounded in front, thinly
covered with short, silky, grayish hairs, and is of a pale, greenish-brown colour, obscurely
veined with black; the anterior part is the brownest, and the lateral margins are black. The
falces are strong, prominent, subcorneal, and armed with teeth on the inner surface; the
maxillae are long, straight, powerful, enlarged where the palpi are inserted, and at the
extremity; the lip is long, somewhat oval, and slightly hollowed at the apex ; the sternum is
oval, with small eminences on the sides, opposite to the insertion o f the legs, and is supplied
with long, gray hairs. These parts are black, tinged with brown. The legs are robust,
.provided with hairs and sessile spines, and are of a reddish-brown colour, with longitudinal
streaks of a lighter shade; the fourth pair is the longest, then the second, and the third pair
is the shortest; each tarsus is terminated by two curved, pectinated claws, below which there
is a small scopula. The palpi resemble the legs in colour, but are darker at the extremity of
the digital joint, which is armed with a curved claw. The abdomen is of an oblong-oviform
figure, projecting a little over the base of the cephalo-thorax, and is densely covered with
short, silky, gray hairs; the sexual organs are of a dark, reddish-brown colour, and the
branchial opercula have a dull-yellow hue.
The abdomen of the male differs from that of the female in being slenderer. The radial
joint of the palpi is rather shorter than the cubital, and projects a large, crescent-shaped
apophy sis from its extremity, on the outer side, which has an obtuse process on the outer side
of its superior limb; the digital joint is oval, convex and hairy externally, concave within,
comprising the palpal organs; these organs are highly developed, not complicated in structure,
with a short, curved, pointed process at their extremity, and are of a very dark-brown
colour.
Clubiona holosericea, in common with other species of the genus, can run securely on the
perpendicular surfaces of dry, polished bodies, by means of an adhesive secretion emitted
from its scopulse. It is most abundant in well-wooded districts, constructing a cell of white
silk, which serves it for a domicile, on the under side of leaves or behind the exfoliating bark
of old trees. In June the female spins in this cell a lenticular cocoon of fine, white silk,
measuring one fourth of an inch in diameter, and deposits in it about 109 spherical eggs of a
yellowish-white colour, not agglutinated together. From this period she appears to direct her
attention exclusively to her progeny, constantly remaining on or near the cocoon.
Mr. J. Hardy has taken this species in Berwickshire.
Clubiona amarantha. PI. VII, fig. 76.
Clubiona amarantha, Walck., Hist. Nat. des Insect. Apt., tom. i, p. 591.
— —— Hahn, Die Arachn., Band i, p. 113, tab. 29, fig. 85.
— — Blackw., Annals and Mag. of Nat. Hist., second series, vol. viii,
p. 42.
Length of the female, ffcths of an inch; length of the cephalo-thorax, £th’ breadth, ^ th ;
breadth of the abdomen, £th; length of a posterior leg, 975th s ; length of a leg of the third
pair, ?gths.
The eyes are disposed on the anterior part of the cephalo-thorax in two transverse rows;
the posterior row is the longer, and the interval between the intermediate eyes is greater
than the space which separates them from the lateral ones of the same row; the anterior row
is situated very near, to the frontal margin, and the intermediate eyes, which,are rather the
smallest of the eight, form with those of the posterior row a trapezoid whose .shortest side is
before. The cephalo-thorax is somewhat oval, convex, broadly rounded in front, sparingly
covered with fine, silky .hairs, and is of a yellowish-browncolour, with a tinge of red on the
anterior parf, where the eyes are seated. The falces ire powerful, conical, rather prominent,
and provided, with long hairs and a few minute teeth on the inner surface; the maxillse are
long, straight, gibbous near the base, enlarged whe^p the palpi are inserted, and at the
extremity, which is obliquely truncated and fringed .with long hairs on the inner side; the lip
is moderately long, truncated at the apex, and slightly contracted at the base. These parts
have a dark-brown hue; the base of Jhe maxillae is the palest, and the falces are tinged with
red. The sternum is oval, glossy, thinly covered with long hairs, and has eminences on the
sides, apposite to the le g s ; it is of a pale, yellowish-brown colour, with minute, reddish-brown
spots on the lateral margins. The legs are provided with hairs and sessile spines, and are
of a pale, yellowish-brown colour; the fourth pair is the longest, then the second, and the
third pair is the shortest; each tarsus is terminated by two curved, pectinated claws, below
which there is a small scopula. The palpi are short, and resemble the legs in colour. The
abdomen is of an oblong-oviform figure, densely covered with short, silky hairs, and projects a
little over the base of the cephalo-thorax; %is of a brownish-red colour, the under part being
the palest, and has a band of a dark er hue extending from the anterior extremity, where there