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Staph. 268; Kraatz Ins. D. II, 439; Ganglb. Kaf. M. II, 361. - Thorns. 

 Skand. Col. Ill, 170, 171, 166: Bolitobius . Lordl then , and Megacronu s. 

 - Rey Brevlp. 1882, 195, 189: Bolitobius and Megacronus) . 



The body is elongated, more or less spoole-shaped (fusiform), low 

 convex; thorax naked, abdomen sparsely haired; head somewhat downward 

 bent, posteriorly not constricted, oftenest as broad as long, oc- 

 cationally strongly elongated; eyes scarcely protruding, temples 

 and genae sharply marginated; antennae of various lenght and strength; 

 maxillary palpi oftenest rather slender, their last Joint about as 

 long as - or longer than the next-last, rather cylindrical or feebly 

 tapering, more rarely are they somewhat thickened, and the distal 

 Joint more egg-shaped (subgenus Carphacis ) ; labial palpi, rather small. 



Pronotum more often a little narrower than elytra, somewhat bro- 

 ader than long, anteriorly narrowing with strongly deflected anteri- 

 or corners, low convex, smooth and shiny, but with single bristle-bear- 

 ing punctures along the margins; elytra considerably longer than the 

 pronotum, feebly convex, with yellow or black spots, their humeri 

 with a slight callus, the sides sharply marginated, posterior margin 

 squarely truncated, dorsum with impressed sutural groove, and three 

 punctate stripes, of which one lies in the sutural groove, one along 

 the side, and the third, dorsum stripe, in a feeble groove from the 

 humeral callus along the dorsal surface; the punctures of the dorsum 

 stripe differs in number in the species, and may therefore serve as 

 identification characters. The abdomen is oftenest strongly taper- 

 ing, least in striatus; legs slender, femora at tip, and tibiae with 



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