nent but obtuse, with a large indentation immediately behind each lateral pair of eyes ; the
falces are moderately strong, conical, armed with teeth on the inner .surface, and inclined
towards the sternum, which is broad and heart-shaped ; the maxillae are inclined towards the
lip, which is semicircular and prominent at the apex. These parts are glossy, and have a
brownish-black hue, the falces and maxillae being the palest. The legs are provided with
hairs, and are of a red-brown colour ; the fourth pair is rather the longest, then the first, and
the third pair is the shortest; the two superior tarsal claws are curved and pectinated, and
the inferior one is inflected near its base. The eyes are disposed on the frontal prominence
of the cephalo-thorax ; one pair is seated on the anterior part of its summit, and another,
situated lower down, in front, describes with the former a trapezoid whose inferior side is the
shortest ; the eyes of each lateral pair are contiguous, and the two lower ones of the trapezoid
are the smallest of the eight. The palpi have a brown tint ; the radial joint is much larger
than the cubital, and its extremity, which is greatly produced, tapers to a point curved outwards
in front of the digital joint ; the digital joint is oval, convex and hairy externally,
concave within, comprising the palpal organs ; they are highly developed, complicated in
structure, with a short, curved, pointed, black spine at the extremity, and are of a reddish-
brown colour. The abdomen is oviform, convex above, projecting over the base of the cephalo-
thorax ; it is thinly clothed with hairs, glossy, and of a brownish-black hue, that of the
branchial opercula being brown.
A specimen of Walclcenaëra p icin a , captured in the neighbourhood of Manchester, was
received from Mr. T. Glover, in June, 1838 ; and in the following month another specimen
was taken near Llanrwst. Both individuals were adult males.
Walckenaëra fastigata. PI. XXIf,fig. 229.
Theridion acuminatum, Wider, Museum Senckenb., Band i, p. 232, taf. 15, fig. 11.
Micryphantes acuminatus, Koch, Die Arachn., Baud iv, p. 130, tab. 143, figs. 332, 333.
Argus — Walck., Hist. Nat. des Insect. Apt., tom. ii, p. 370.
Length of the male, ^th of an inch ; length of the cephalo-thorax, ^th, breadth, ^th ;
breadth of the abdomen, ^th ; length of a posterior leg, |th ; length of a leg of the third
pair, ^th.
The cephalo-thorax is large, oval, convex, glossy, depressed at the base, with a broad,
shallow indentation in the medial line ; the anterior part, which is very prominent, has a
large indentation on each side, and is divided into two lobes by a deep, transverse groove in
front ; the summit of the superior lobe is rounded, with a slight depression in the middle, and
has some short hairs in front ; the inferior lobe, which is much the larger, is very convex ;
the falces are small, conical, and vertical; the maxillæ are powerful, and inclined towards the
lip, which is semicircular and prominent at the apex ; and the sternum is broad, heart-shaped,
convex, and glossy. These parts are of a very dark-brown colour, the base of the cephalo-
thorax being the palest. The eyes are nearly equal in size, and are disposed on the anterior
prominence of the cephalo-thorax; two are seated transversely on the summit of the superior
lobes, and the other six on the summit of the inferior lobe, high above the frontal margin ; the
four intermediate eyes form a long, narrow trapezoid whose anterior side is the shortest, and
those of each lateral pair are placed obliquely on a minute tubercle. The legs are slender,
provided with hairs, and of a yellowish-red hue; the fourth pair is the longest, then the first,
and the third pair is the shortest; each tarsus is terminated by three claws; the two superior
ones are curved and pectinated, and the inferior one is inflected near its base. The palpi
resemble the legs in colour, with the exception of the digital joint, which has a brown h u e ;
the radial is shorter than the cubital joint, and is produced and pointed at its extremity, in
front; the digital joint is oval, convex and hairy externally, concave within, comprising the
palpal organs, which are highly developed, prominent, complex in structure, and of a dark-
brown colour. The abdomen is oviform, sparingly clothed with hairs, glossy, convex above,
projecting over the base of the cephalo-thorax, and has a brown-black hue.
The trivial name “ 'acuminated' having been given to the typical species of the genus
Walclcenaera, the specific name conferred upon this spider by M. Wider has been changed to
fa stig a ta . The specimen from which the description was made was found among moss, at
Southport, in June, 1859, by the Rev. O. P. Cambridge, and possesses the essential characters
of a Walckenaera in a high state of development.
W alckenaera n em o r a l is . PI. XXII, fig. 230.
Walckenaera nemoralis, Blackw., Linn. Trans., vol. xviii, p. 641.
— Blackw., Annals and Mag. of Nat. Hist., second series, vol. ix,
p. 466.
Argus nemoralis, Walck., Hist. Nat. des Insect. Apt., tom. iv. p. 507.
Length of the male, ^th of an in ch ; length of the cephalo-thorax, ^nd, breadth, ^th;
breadth of the abdomen, ^ n d ; length of a posterior leg, [jtb ; length of a leg of the third
pair, ^th.
The legs are robust and provided with hairs; the fourth pair is the longest, then the
first, and the third pair is the shortest; the two superior tarsal claws are curved and pectinated,
and the inferior one is inflected near its base; the cephalo-thorax has no indentation
in the medial lin e ; the anterior part is prominent but obtuse, with a transverse groove in
front, which divides it into two segments; one pair of eyes is'seated on the upper segment,
near its anterior margin,' and’ the rest are distributed on the lower segment, one pair being
placed on each side, and the other in front; the eyes of the last pair are the smallest of the
eight, and, with those on the upper segment, form a long trapezoid, whose shortest side is
before; the falces are moderately strong, conical, armed with teeth on the inner surface, and
inclined towards the sternum, which is broad, convex, and heart-shaped. These parts, with
the maxillae, lip, and palpi, are of a brown colour, the legs being the palest, and the lip,
anterior part of the cephalo-thorax, and digital joint of the palpi the darkest. The radial