RLEDIUS. 307 



Head, thorax and abdomen black; antennae and legs 

 pitcliy. L. 3} — 3^ 1. Common. B. sjuctabilis, Kr. 



^. Thorax closely punctured. 



Black ; elytra red, to a greater or less extent round scu- 

 tellum blackish ; antennae and legs reddish-brown or 

 piteliy. JMalc with a long horn on each side of forehead. 

 L. 2f 1. Scarce. B. tricornis, Herbst. 



IT, Length 2 lines. 



Black ; antennae pitch-brown, lighter at base ; legs red- 

 bru\vn or brown. Thorax rather dill'usely and strongly 

 punctured. Male with a knob on each side of forehead. 

 Scarce. B. tmicornis, Germ. 



b. Front of thorax not produced. 



I, Forehead produced into a long horn on each side. 



Black ; mouth, elytra (except along suture), antennae 

 and legs red-brown ; thorax generally pitch-brown, rather 

 diffusely and strongly punctured. L. 2^ 1. Not uncom- 

 mon. B. bicornis, Germ. 



II. Forehead not produced at sides. 

 1. Thorax black. 



A A, Antennae lighter at base or in middle. 



a a. Thorax rather diffusely and finely j)unc- 

 tured, with fine central furrow. 



A a. Elytra black. 



A 1. Elytra half as broad again and 

 nearly double as long as thorax. 



Black ; antennae often brownish at apex, first two joints 

 generally brownish-yellow ; palpi blackish at apex ; legs 

 with coxae and femora brownish-black, trochanters, tibiae 

 and tarsi brownish-yellow. Thorax obsoletely punctured, 

 elytra finely and closely so. L. l-f 1. Rather common. 



B suhterraneus, Er. 



J5 1. Elytra not much broader than and 

 only half as long again as thorax. 



a 1, Legs reddish-yellow. 



Black ; antennae pitch-brown ; at base reddish-yellow ; 

 palpi brownish at apex. Thorax finely but not obsoletely 



x2 



