192 Rev. O. P. Cambridge on some 



being adult, its best specific characters are not developed, I 

 have ventured to describe it as a new species ; it is, at any 

 rate, distinct from G. anglica, Cambr., and G. luguhris, C. L. 

 Koch, the only other British forms of the genus yet dis- 

 covered. 



Genus Drassus. 



Drassus minor, sp. n. (PI. XII. fig. 1.) 



Adult female, length 2 lines. 



Cephalothorax elongate- oval ; lateral constrictions at caput 

 slight ; the profile line forms an even, but not strong, curve ; 

 clypeus not exceeding in height the diameter of the fore- 

 central eyes. Colour pale dull yellow-brown, some dark 

 veinings indicating the normal indentations. 



Eyes rather large and closely grouped, in the ordinary two 

 curved transverse lines, but not very different in size ; the hind- 

 central pair oval and oblique, their most proximate points sepa- 

 rated from each other by less than their narrowest diameter, 

 and each is separated by only a very slightly greater interval 

 from the hind-lateral next to it. Fore-central pair large, 

 separated by a very small interval, and about equally distant 

 from the fore laterals. 



Legs not very long, but strong; relative length 4, 1, 2, 3, 

 rather paler in colour than the cephalothorax, and furnished 

 with a few spines, chiefly on the tibiae and metatarsi of the 

 third and fourth pairs of legs. 



Falces moderately long, tolerably strong, and rather darker 

 in hue than the legs. 



Maxilla) strong, of ordinary form, curved and inclined 

 towards the labium, but with a very slight impression across 

 the middle ; colour darker than that of the cephalothorax. 



Labium oblong-oval, longer than broad, apex rather 

 rounded, and rather darker than the maxillae. 



Abdomen elongate-oval, rather truncate before ; colour dull 

 sooty brown, with a somewhat deeper longitudinal central 

 stripe on the fore half of the upperside ; on each side of this 

 are faintly visible the usual three elongate pale spots in a 

 curved longitudinal line, followed by a very faint indication 

 of the usual transverse angular lines. The underside is 

 paler than the upper, and the whole is clothed with very short 

 pale hairs. The genital aperture is tolerably large, of cha- 

 racteristic and distinctive form, with a red-brown corneous 

 margin ; and immediately behind it are two red-brown, shining, 

 circular, convex spots close to each other in a transverse line. 

 The whole is surrounded by coarse, dark, converging hairs. 

 An adult and two immature females of this species were 



