78 Mr. J. Blackwall on new species of 
of a dark brown colour and is provided with hoary hairs, which 
form a line extending along each lateral margin, and a curved 
transverse one in front, passing between the two intermediate 
pairs of eyes. Mandibles powerful, conical, vertical, armed with 
two rows of teeth on the inner surface: maxille short, strong, 
enlarged and rounded at the extremity : lip semicircular, slightly 
pointed: sternum heart-shaped, with small eminences on the 
margins opposite to the articulation of the legs: these parts are 
of a dark brown colour, the extremities of the maxille and lip 
being yellowish brown. Legs long and robust, provided with 
hairs and spines ; they are of a yellow-brown colour, marked with 
dark brown annuli; each femur has a broad annulus at its extre- 
mity, that of the anterior ones extending over half the joint ; 
first pair of legs the longest, then the second, third pair the 
shortest. The palpi resemble the legs in colour. Eyes disposed 
in two transverse rows on the anterior part of the cephalo-thorax ; 
the four intermediate ones, which are seated on a prominence, 
form a square nearly, the eyes of the anterior pair being rather 
more distant from each other than those of the posterior pair, 
and the largest of the eight ; the eyes of each lateral pair are 
placed obliquely on a tubercle,but are not contiguous. Abdomen 
oviform, thinly clad with hairs, convex above, projecting over the 
base of the cephalo-thorax ; the upper part is yellowish brown, 
with a large, dark brown, festooned band, which tapers to the 
spinners, extending along the middle ; the anterior part of this 
band comprises a yellowish brown isosceles triangle including a 
dark brown triangle of the same form, both having their vertices 
directed forwards ; the posterior part of the band comprises a 
yellowish brown cross, the longitudinal portion of which tapers 
towards the spinners and includes a dark brown line, extending 
along the middle, which is broadest near its anterior extremity ; 
the transverse portion of the cross is somewhat curved, and its 
extremities usually break the continuity of the large, dark brown 
festooned band, whose posterior part is marked with some yel- 
lowish brown transverse lines; sides yellowish brown, with a 
broad, longitudinal, dark brown band, dentated at its superior 
margin, and mottled with yellowish brown ; middle of the under 
part brownish black, with a curved yellowish line on each side, 
which does not extend to the spinners. The sexual organs are 
reddish brown, and have a cylindrical membranous process di- 
rected backwards, connected with their anterior margin. Plates 
of the spiracles brown. 
The colours of the sexes are very similar, but the male is 
smaller and slenderer than the female and its legs are longer, an 
anterior one measuring 1 inch and ,°,ths. The palpi are short ; 
the anterior extremity of the cubital joint is provided on the 
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