(Page 471) 

 little narrowing and more or less elongated; antennae rather short, 

 fine, hardly thickened outwardly, their third joint most often longer 

 than the second; fore-margin of labrum at middle with two denticles 1 '); 

 mandibles long, sickle-shaped, the inner margin armed with one or more 

 teeth; last joint of maxillary palpi especially small, spiculiform, near- 

 -ly hidden in the claviformly thickened third joint. 



Pronotum most often oblong and narrower than the head, anteriorly 

 rounded off and abruptly narrowing, posteriorly more smoothly narrowing, 

 pronotum and head with dense umbilical punctation, and dull; elytral 

 sides slightly rounded; abdomen more or less elongate, occasionally broad- 

 ened a trifle posteriorly, its first, or first three free dorsal joints 

 depressed at base; legs rather slender; anterior tarsi not dilated, all 

 tarsal first joints longer than the second, the fourth short, and divided 

 into two, with a membranous appendix equipped lobes, between which the 

 short claw-joint is inserted. Abdominal sixth ventral joint in the O is 

 at tip angularly incised. 



In the northern part of Middle Europe about 5 species are distribut- 

 ed, which also occur in this, and partly in the other northern countries. 

 They are found under leaves and stones, at the root of plants and in com- 

 post, a single one of them also with ants. 



Key to Species. 

 1. Elytral and abdominal first four free dorsal joints dull. L. 4.5-5 mm. 



1. A. filiformis Latr. 



Elytra and abdomen more or less glistening 2. 



-56- 



