206 PROCEEDINGS OF THE ACADEMY OF [May, 



The anterior row of eyes but veiy slightly, scarcely j^erceptibly, 

 curved forwards, its central eyes of the same size as (at least not greater 

 than) the laterals, and somewhat more distant from each other than 

 from the lateral eyes ; eyes of the second series separated by an interval 

 not much (about one-fourth) greater than their diameter. 



Chelicerm narrow, but slightly convex longitudinally; their length 

 is greater than the height of the face and the length of tlie patellai. 

 Labium with slightly rounded apex. 



Seen from the under side the anterior tihice show four pairs of spines, 

 the third pair belonging to the sides of the joint. 



The e-pigynum forms no deep fovea, as in P. fuscula, ex.gr., the 

 elevated area shows, when the hair is rubbed off, a sj-^stem of short 

 furrows and impressions rather difficult to describe, and forming a 

 large oblong figure, rather narrow in its anterior half, then dilated 

 gradually with rounded sides, and truncated behind ; the anterior part, 

 which is divided from the posterior by a large but not deep transverse 

 depression, shows two longitudinal parallel furrows, the anterior 

 apices of which are rounded; the narrow interval between these fur- 

 rows is pointed anteriorly, and has in the middle a very fine longitudinal 

 furrow ; the posterior broad part of the epigynum shows on each side 

 a deep, oblique, incurved, crescent-formed fovea; the space between 

 these fovese is triangular, with the apex directed backward, and 

 divided by a deep middle longitudinal furrow. 



Total length, 6.5 mm. Length of cephalothorax, 3.25 mm.; width, 

 2.25 mm. 



Length of leg I, 8.75 mm. 



Length of leg II, 8 mm. 



Length of leg IV, 13 mm. ; tib. + pat., 3.75 mm. 



Male.— A male thought to belong to this species differs by the 

 cephalothorax being of a purer black, with the lateral bands less dis- 

 tinct. The legs, which have the same markings as in the female, are 

 of a clearer yellowish-brown color than in that sex, but darker at the 

 base; the coxae are black above and blackish beneath, the thighs also 

 blackish on the under side towards the base; the tarsi are yellowish 

 brown scarcely black at the extreme apex (as in the female). The 

 palpi are very dark yellowish brown (the tibial joint almost black) 

 with black lines, and the tarsal joint quite black; the tibial joint is 

 thickly clothed with black hair; also the other joints are black-haired. 

 The abdomen has a very distinct narrow band at base covered with 

 whitish hair; venter blackish. 



The patella of the palpus is somewhat longer than broad, cylindrical ; 



