424 



somewhat irregularly shaped, shining, corneous-looking margin, 

 and behind bya transversely rugulose integument, from the middle 

 of the posterior margin of which a small point projects into the 

 anterior portion of the cavity. In the form of the genital 

 aperture, as well as in many other respects, it bears considerable 

 resemblance to Drassus troglodytes, C. L. Koch (p. 17), but tho 

 "small point," just now mentioned as projecting into the cavity 

 of the genital aperture, is (in Drassus troglodytes) a projection of 

 large size, and covers the greater portion of the cavity. 



It is just possible that Drassus criminalis may be merely the not 

 quite fully developed form of Drassus infuscatus ; though its 

 genital aperture has the appearance of maturity. Future 

 researches will probably make this more certain, while at present 

 (and not knowing the males of either), I consider the two 

 spiders to belong to distinct species. 



An adult female of Drassus infuscatus was found by myself 

 among dead leaves on the ground in a wood at Bloxworth on the 

 10th of September, 1877. It is found also in Sweden, Germany, 

 Belgium and France, but appears to be everywhere exceedingly 

 rare. 



DRASSUS MINOR. 



Drassus minor, Camir., Ann. and Mag. N. H., 1879, part, iv., 

 ser. 5, p. 192, pi. xii., fig. 



Cephalo-thorax elongate-oval ; the lateral marginal constric- 

 tions at the caput are slight ; the profile line forming an even, 

 but not strong, curve. The clypeus does not exceed 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 closoly grouped, in the ordinary two 

 curved transverse lines. They are not very different in size ; 

 the hind central pair are of an oblique-oval form, their most 

 proximate points separated from each other by loss than their 

 narrowest diameter, and from the hind laterals by only a very 

 slightly greater interval. Fore central pair large, and separated 



