78 Mr. J. Blackwall on new species of 



of a dark brown colour and is provided with hoary hairs^ which 

 form a hne 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: maxillae 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 maxillae 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 ^ t*^®- '^^^ palpi are short ; 

 the anterior extremity of the cubital joint is provided on the 



