(Page 441) 



4. Uroup Paederini . 



(Erichs. Kaf. Mk. Brand. I, 1837, 499; uen. Spec, Staph. 56C ; Kraatz 

 Ins. Deutschl. II, 662; Janglb. Kaf. lUtteleur. II, 494. - Faederlna 

 Thorns. Skand. Col. II, 194. - Pederiens Muls. at F.ey Brevip. 1878, 1. 



The prosternal spiracula are ordinarily not visible, being covered 

 by the pronotal inflexed, and posteriorly dilated (with pro-humeri con- 

 nate) side-margins, only exceptionally uncovered ( Cryptobium , Lito- 

 eharis) . Behind the fore-coxae the sternum at middle is either mem- 

 branous or chitinous ( Astenus ) . The antennae are 11-jointed, inserted 

 beneath the angle- or axe-formed, protruding anterior corners of the 

 forehead, above base of the mandibles, before the eyes. 



The body is narrowly elongate, and most often rather round, rarely 

 somewhat flat ( Achenium ) ; the head porrect, posteriorly strongly, of- 

 ten very strongly neck-f ormedly constricted, and the neck thereby of- 

 ten especially narrow; the eyes small, antennae moliniform or filiform, 

 rarely geniculate ( Cryptobium ) ; mandibles prominent, provided with one, 

 or several teeth. The last joint of maxillary palpi is remarkably small, 

 subuliform or acicular, sometimes "wart-formed" tuberculif orm -(Paederus) 

 or scarcely visible ( Stilicus ). 



Pronotum is differently formed; scutellum visible; elytra almost of 

 same length as the sternum; abdomen most often elongate, its sides with 

 margins (or ridges); the next-last (ninth- seventh free) dorsal joint 

 is either divided into two, more or less narrow side-pieces or squarely 



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