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 Distributed in Middle and North Europe; in our country it is rare; 

 on damp woodland and meadow ground, on water plants at water-courses 

 and ditches (Ry and Laven); several places in northeastern Sjaelland; 

 Falster; Bremersvold, Loll.). 



4. Subgenus Mesostenus Rey. 



47. St. palustrls Er. 



(Erichs. Kaf. Mk. Br. I, 565; (Jen. Spec. Staph. 729; Kraatz Ins. 

 D. II, 690; Thorns. Skand. Col. II, 238; Rey Brevip. 1884, 199; lianglb. 

 Kaf. U. II, 597). 



In relation to the following species of this subgenus easily iden- 

 tified by the color of:, antennae, maxillary palpi, and legs. 



Black, somewhat glistening, without bronze-reflection, estremely 

 sparsely and finely haired; maxillary palpi yellow, their third joint 

 brownish; antennae reddish-yellow, but their first joint and the club 

 brownish, sometimes almost black; legs brown or pitch-brown, femoral 

 inner half reddish-yellow. 



The head is broader than pronotum and elytra, rather robustly and 

 densely punctated; forehead not impressed, but with two broad, rather 

 deep longitudinal grooves, separated by a convex, somewhat smoothened 

 interval, antennae rather short, shorter than in impressus ; pronotum 

 before middle as broad as long, and almost as broad as elytra, with 

 strongly rounded sides, narrowing posteriorly, robustly and densely 

 punctated, in middle-line most often slightly grooved, and with a feeble 

 impression on each side posteriorly; elytra rather flat, uneven, pos- 

 teriorly feebly broadened, a little longer than pronotum, punctated 



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