14 EDV. ELLINGSEN. 



whitish spots on the upper and lower sides of the abdomen in 

 the new species are entirely absent in the Norwegian species, 

 which is moreover on the whole, of a darker colour. The fin- 

 gers in this species are proportionally longer, the trochanter 

 somewhat longer and provided with a longer stalk; the stalk of 

 the femur passes moi-e gradually into the femur (particularly 

 on the outer side) than it does in the Japanese species, the stalk 

 being thus more pronounced in the latter. 



Genus Chthonius. 



Subgenus Chthonius, s. s. 

 Chthonius japonicus, nov. sp. 



Four eyes, two on each side, more than a diameter distant 

 from each other, the anterior one about one diameter from the 

 front margin; the anterior eye is well developed and elevated, 

 the posterior one sometimes less distinct and lower. 



Colour. Céphalothorax, mandibles, sclerites and palps (except 

 the hand) pale reddish brown, the hand dark olivaceous brown ; 

 legs and the interstitial parts whitish, as are also the two anterior 

 tergites. 



Céphalothorax about as long as it is wide in front, narrow- 

 ing considerably towards the back ; the lateral margins slightly 

 convex, the front margin straight, m the middle with a distinct 

 tooth, on each side of this a long, dark-coloured bristle. The 

 surface smooth and glossy, with some long, robust, pointed hairs 

 along the margins. 



Abdomen. The sclerites shghtly striped transversally (it can 

 scarcely be called shagreening), glossy. 



Palps slender, smooth and glossy; the hairs strong and pointed, 

 longer on the inner side than on the outer. — Trochanter with 

 hardly visible stalk, the inner side slightly convex, -the outer 

 side slightly concave; gradually increasing in width. Femur 

 with indistinct stalk, the inner side straight, but with the usual, 



