164 THE CANADIAN ENTOMOLOGIST. 



becoming near end a little larger than the femur ; claw about as long as 

 femur ; hand not very broad, tapering towards base of fingers, which are 

 a little shorter than the hand, and curved. Palpi, except fingers, granu- 

 lated, and provided with simple hairs. Cephalothorax distinctly narrowed 

 in front of eyes, anterior margin straight. Abdomen broad, seven scutge 

 separated by a line, first scuta not divided. Legs short, hind legs not 

 very stout. Cephalothorax and scutte of abdomen granulated, with 

 simple hairs. The eyes slightly projecting and almost touching. Legs 

 granulated, hind pairs but little larger than front pairs. Found in crevices 

 of a cliff at Ithaca, N. Y. 



Chthoniiis, Koch. 



The species of this genus are seldom taken in houses. They are not 

 rare under wet or damp leaves in the woods. They can move quite 

 rapidly. Three species have been described from the U. S., two of them 

 from caves. The description given by Hagen for Chth. pennsylvaniais 

 was quite short. A fuller description of this and two other forms may be 

 added. 



Chthonius pennsylv aniens^ Hagen. 



Length, 1.9 mm. Colour, brownish with scattered silvery spots on 

 abdomen, mandibles reddish, palpi pale reddish, legs white. Palpi 

 slender, longer than the body ; third joint (femur) reaching one-third its 

 length beyond the cephalothorax, nearly cylindrical, slightly narrowed in 

 middle, largest near tip ; fourth joint about one-third the length of the third 

 joint ; hand not broad, tapering towards base of fingers, the latter straight 

 about one and one-half times length of hand ; femur longer than fingers. 

 Mandibles very large, about as long as cephalothorax. Cephalothorax 

 much wider in front than behind, about as wide in front as long. Hind 

 eye about twice its diameter from front eye, which is about on the front 

 margin. Abdomen narrow at base, becoming broader near tip, twice as 

 long as cephalothorax. Hind pairs of legs very much larger than front 

 pairs ; fourth pair much longer than body, tip of femur nearly reaching to 

 the end of abdomen. Penn., N. Y. 



Chthonius longipalpis, nov. sp. 



Length, 1.9 mm. Colour pale yellowish, fingers and claws of mandi- 

 bles a little reddish ; cephalothorax and scutse slightly brownish, abdo- 

 men with scattered silvery spots. Palpi long and slender, longer than 

 body ; femur very slender, slightly largest near tip ; fourth joint short, 

 conical ; claw slender ; hand narrow, tapering toward base of fingers. 



