Mr. BuiackwaLv's Descriptions of new Species of Spiders. 5 
longissimo, reliquis subæqualibus ; abdomine saturatè olivaceo-brun 160, 
serie laterali macularum albarum pilisque numerosis marginalibus albis 
munito. 
Length of the female th of an inch; length of cephalo-thorax 745; breadth ; 
breadth of abdomen yz; length of a posterior leg 3% ; length of a leg of 
the third pair 1. : | 
Anterior part of the cephalo-thorax compressed; sides depressed, marked 
with furrows diverging from the upper part to the margins; in the me- 
dial line of the posterior region there is a narrow indentation; colour 
dark brown, a few white hairs occurring on the lateral margins. Man- 
dibles powerful, conical, vertical, armed with a few teeth on the inner 
surface; they are brown, tinged with red. Maxillæ straight, enlarged 
and rounded at the extremity, similar in colour to the mandibles, but 
` paler. Lip nearly quadrate, rather broader at the base than the ex- 
tremity, dark brown, except the tip, which is reddish brown. Sternum 
heart-shaped, reddish brown, the margins being the darkest. Four eyes, 
much smaller than the rest, form a transverse row in front ; the other four, 
situated on the sides and anterior part of the cephalo-thorax, describe 
a quadrilateral, the anterior eyes of which are the largest of the eight ; 
lateral eyes of the frontal row rather smaller than the intermediate ones. 
Legs yellowish brown, with obscure bands of a darker hue; fourth pair 
the longest; the other three pairs equal in length, or very nearly so. 
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, and have a small, curved, pecti- 
nated claw at their extremity. Abdomen oviform, thickly covered with 
hairs, convex above, projecting over the base of the cephalo-thorax ; it is 
dark brown, with a tinge of olive; a row of minute, white spots extends 
along each side of the medial line of the upper part, and numerous whitish 
hairs occur on the sides and under part. Sexual organs black and glossy. 
Plates of the spiracles pale dull yellow. 
The male is rather smaller than the female, which it closely resembles 
in colour, and in the relative length of its legs. Palpi slender; fourth 
4L2 
