1875.] 503 [Thorell. 



sulco longitudinali profundo notatam amplectentibus. — 9, ad. Long, 

 corp. 6 millim. 



Female. — Ceplialothorax shorter than tibia and patella of the 

 fourth pair, rather long and narrow, with the sides of the pars 

 cephalica almost perpendicular; brownish black, with three rather 

 narrow longitudinal bands covered with whitish hair, the middle one 

 reaching to the pars cephalica, truncated and gemmated anteriorly, 

 narrowing backwards, the lateral bands supra-marginal, continuous, 

 rather uneven in the upper margin. Sternum black, labium also 

 blackish, with pale, slightly rounded apex. The anterior row of eyes 

 but very slightly, scarcely perceptibly, 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. Mandibles narrow, but 

 slightly convex longitudinally; their length is greater than the height 

 of the face and the length of the patellae, their color a dull yellowish, 

 or ferruginous brown. Maxillae dark yellowish brown. Palpi of the 

 same color, the femoral joint with blackish longitudinal streaks and 

 spots. Legs of a dark and dull yellowish brown, the thighs with 

 dark streaks and spots above and on the sides, limiting above two 

 large, oblong, pale spots, divided longitudinally by a fine black line; 

 the patellae and tibiae have each three blackish longitudinal lines. 

 Seen from the under side, the anterior tibiae show four pairs of 

 spines, the third pair belonging to the sides of the joint. Abdomen 

 brownish, with traces of a short white band at the anterior margin of 

 the back. The vulva forms no deep fovea, as in L.fuscula, ex. gr. ; 

 the elevated ferruginous area vulvae shows, when the hair is rubbed 

 off, a system of short furrows and impressions rather difficult to de- 

 scribe, and forming a large, oblong figure, rather narrow in its ante- 

 rior 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 nar- 

 row interval between these furrows is pointed anteriorly, and has in 

 the middle a very fine longitudinal furrow. The posterior broad 

 part of the area vulvae shows on each side a deep, oblique, incurved, 

 crescent-formed fovea; the space between these foveae is triangular, 

 with the apex directed backward, and divided by a deep middle lon- 

 gitudinal furrow. Mamillae blackish. 



A male, which I think belongs to this species, differs by the cephalo- 



