(Pa^e 156) 

 In the o the sixth free dorsal joint is divided at middle, by a deep, 

 at bottom semi-circular incision into two broad lobes, each with a more 

 or less deep groove along the middle, v.hereby two spines or obtuse teeth 

 occur on each lobe (Fig. £5). In the o the same dorsal joint is at middle 

 slightly incurved. The sixth ventral joint of S is rounded at tip, in the 

 Q feebly emerginate. 



It is distributed throughout North and Middle Europe, and occurs espe- 

 cially on tree fungi; in this country heretpfore found only in Bornholm 

 in " Polyporus fraxini " (Prof. Schii^dte). 



(Page 157) 

 53. H. nigritula irach. 



(Jravh. Micr. 35; Muls. et Key Dre'vip. 1873, 497; Kraatz Ins. D. II, 

 276; Janglb. Kaf. U. II, 183. - boletobia Ihoms. Skand. Col. Ill, 78; Sharp 

 Fev. Brit. Horn., 202). 



A rather broad and short species, most like crassicornis , from which 

 it however easily is separated by the form of the antennae and the sex- 

 characters of O , as a rule the color is also lighter. 



The head is black; pronotum pitch-brown with lighter sides or entirely 

 reddish-brown; elytra brownish-yellow with a dark shadow around scutellum 

 and across the hind corners; abdomen glistening black or pitch-black, often 

 brownish at tip and base; antennae pitch colored, their first two or three 

 joints, and the legs reddish yellow. 



Head short and broad, narrower than pronotum, indistinctly punctated 

 and glistening; antennae rather short, slightly thickened distally, their 

 third joint scarcely as long fs the second, the fourth small, transverse. 



•265- 



