Mr. Blackwall's Descriptions of new Species of Spiders. 613 



longissimo, reliquis subsequalibus ; abdoinine saturate olivaceo-br mneo, 

 serie lateral! macularum albarum pilisque numerosis marginalibus albis 

 inunito. 



Length of the female ^th of an inch ; length of cep halo-thorax yo ; breadth ^s ; 

 breadth of abdomen yj ; length of a posterior leg -^ ; length of a leg of 

 the third pair j. 



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. Maxillae 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 tlie 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 



