524 



line of the abdomen, above, marking the position of the retracted 

 process. 



The vulva in A. lobata, viewed directly from below, appears to 

 be a large, deep, at the sides much rounded, for the most part 

 black, double-fovea, the anterior, in front light-brown border of 

 which is drawn out into an oblong, flattened, almost tongue-like, 

 in the middle slightly broader, light-brown process curved and di- 

 rected backwards, the breadth of which is about 1 / 3 of that of the 

 vulva, and which with its apex reaches to the hinder edge of the 

 latter: this process is however not free, but united with the bottom 

 of the vulva by a perpendicular, thin lamina, which divides the whole 

 into two large, deep, rounded, posteriorly open fovese, one on each 

 side of this septum. The posterior margin of the vulva exhibits in 

 the midst a more pale-coloured protuberance, bounded by two de- 

 pressions. The male is very unlike the female, many times smaller, 

 its cephalothorax only about 2'/ 2 millim. long; the dark rings on 

 the legs are indistinct, the abdomen elongated and narrow, with the 

 sides straight, not at all festooned; the cephalothorax is without the 

 transverse dark patch at the hinder extremity. The tibial joint of 

 the palpus is extremely short and on the inner side drawn out into 

 a rather short lobe, which is almost triangular, and blunt at the 

 apex; the lamina (which is turned inwards) is at the very base on 

 the outer side produced into a blunt, outward-directed, downward 

 curved, stout, dark process; the bulbus is very large and compli- 

 cated, and has on the under and hinder side an upward curved spine, 

 which is long, tapering to a fine point, very thick at the base, 

 and there armed with a tooth pointing downwards: the point of this 

 spine rises behind the outward-folded border of a very large, up- 

 ward and somewhat outward directed, almost mussle-shaped appen- 

 dage on the outer side of the bulbus, near its base: from a protu- 

 berance on the under and outer side of the base of the bulbus, 

 which protuberance is dentated on its upper margin, proceeds ano- 

 ther finer and shorter spine or coarse bristle, the point of which is 

 directed towards the inner side of the above-mentioned large process. 



(Pag. 509.) Arctosa singoriensis. 



Trochosa singoriensis (Laxm.) 1770. 



Syn.: 1770. Abanka singoriensis Laxm., Nov. Ins. spec, in Nov. Comment. 



Acad. Scient. Petrop., XIV, I, p. 602, Tab. 

 XXIV, fig. 12. 



