646 Mr. Blackwall s Descriptions nf new Species of Spiders, 



Tlie spicter from which the foregoing' description was made was found run- 

 ning on a footpath at Oakland, near Llanrwst, in May 1838. 



32. Neriëne pidla. Maris cephalo-thorace saturate brunneo ; mandibuhfe 

 maxillis labioque saturate rufo-brunneo ; sterno brunneo, punctis satura- 

 tioribus ; pedibus palpisque rufescenti-brunneis, nisi in iiorum articulo 

 terminali saturate brunneo; abdomine flavescenti-brunnco, punctis nume- 

 rosis strigisque tenuibus saturatioribus. 



Length of the male ^th of an incli ; length of cephalo-thorax ^ij ; breadth -^; 

 breadth of abdomen -r^; length of an anterior leg \; length of a leg of 

 the third pair ^. 



Cephalo-thorax oval, convex above, glossy, with slight furrows on the sides, 

 and an indentation in the medial line of the posterior region ; its colour 

 is daik brown. Mandibles strong, conical, armed with a few teeth on the 

 inner surface, and inclined a little towards the sternum. Maxillœ power- 

 ful, and inclined towards the lip, which is quadrate. These parts are of 

 a dark reddish brown colour. Sternum heart-sliaped, glossy and brown, 

 with very minute spots of a darker liue. Legs reddish brown; first and 

 fourth pairs the longest and equal in length, third pair the shortest. 

 Second joint of the palpi curved towards the cephalo-thorax ; third and 

 fourth joints short, the latter having a large process, rounded at the ex- 

 tremity, on the outer side, and a smaller one on tlie inner side; these 

 joints are of a red-brown colour; fifth joint dark brown, oval, hairy and 

 very convex externally, concave within, comprising the palpal organs, 

 which are highly developed, complicated in structure, and red-brown. 

 Abdomen oviform, convex above, projecting over the base of the cephalo- 

 thorax ; it is thinly clad with hairs, and of a yellowish brown colour, with 

 numerous minute spots and fine streaks of a darker hue. Plates of the 

 spiracles pale yellow. 



Males of tliis species, witli the palpi fully developed, were taken in June 

 1836, on rails near Llanrwst. 



33, Neriëne gracilis. Nigricans; pedibus pallidè rufescenti-brunneis ; palpis 

 saturate viridibus. 



