- il — 



the band minutely shagreened, wtìat I have not been able to find in 

 the above specimen, but there is some minute and disperseti granula- 

 tion on the inner side of femur. This is a very rare species, previously 

 found only in the Grotta d'Oliero, near Bassano, in the North of Italy. 



Chthonius C. L. Koch. 

 Subgenus Chtlionius s. s. with 4 eyes. 



Chtbonius tenui» L. Koch. 



1873. Chthonius tenuis L. Koch. Darst. europ. Chern , p. 51. 



1875. » tenuis L. Koch, Stecker, Chernet. Bòhmens, p 14. 



1879. » tenuis L Koch, E. Simon. Arachn. Frauce, VII, p. 72. 



1892 » tenuis L. Koch, Cambridge, Brit. False-Scorp . p. 211, pi. A, f. 17. 



Two eyes on each side, the anterior one scarcely one diameter 

 from the front margin, the posterior one a little more than a diameter 

 from the former, stili the distance may differ. The anterior eye is 

 always developed with distinct cornea, the posterior eye is often in- 

 distinct, sometimes even being covered by skin, distinctly shagreened 

 like the rest of the surface of cephalothorax, there is, however, always 

 seen a shining spot. 



Colour: on larger specimens cephalothorax and the somites of ab- 

 domen are dark brown, palps more palish brown, uniformly coloured, 

 on smaller specimens cephalothorax and somites are often olivaceous 

 brown and the hand of the palps darker than the rest of the palps. 

 Abdomen has often numerous, round, whitish spots. 



Cephalothorax: length about equal to breadth in front, somewhat 

 attenuated backwards with the lateral margins a little convex, the 

 proportional between the width in front and behind being about 1,3 

 (this proportional in a specimen of Chth. Rari being ca. 1,5), front 

 margin nearly straight, only a little rounded at the lateral corners, 

 the centrai part straight and provided with numerous, minute teeth ; 

 minutely shagreened and glossy. The hairs strong, pointed, situateti 

 especially along the front and the lateral margins. 



Abdomen: tergites and sternites distinctly and transversally striped, 

 glossy, with hairs like those of cephalothorax. 



Palps glossy, shagreened above and below, excepting trochanter 

 auti the lower surface of femur, being smooth; the inner side of femur 

 provided with long hairs, the outer side with shorter ones, the other 

 hairs of the palps about equal. — Trochanter with a very short stalk, 

 the inner side strongly convex, the outer side very concave. Femur 



