(Page 535) 

 Pronotum with isolated punctation and with a few unpunctated spots. 

 Forehead horns in the a are perpendicular and conical. L. 6-7 mm. 

 3. Bl. spectabllis Kr. 



5. Pronotal fore-corners prominent. Elytra with dense and deep puncta- 



tion. L. 5-6 mm 4. El. bicornis Ahr. 



Pronotal fore-corners rectangular. Elytra rather sparsely, posteri- 

 orly feebly punctated. L. 3.8-5 mm 5. Bl. diota Schi^r. 



6. Pronotum posteriorly rounded narrowing, either not distinctly set- 



off, or with very obtuse hind corners 7. 



Pronotum posteriorly incurved or obliquely narrowing with distinct- 

 ly set-off, obtuse- or rectangular hind corners 14. 



7. Pronotum at middle-line finely, yet sharply grooved 8. 



Pronotum at middle-line not grooved.. 13. 



8. ProQOtum feebly and rather finely punctated 9. 



Pronotum with robust and rather coarse punctation 11. 



&. The head behind eyes with a transversal groove. Elytra reddish yel- 

 low with dark suture. L. 4-5 mm 6. Bl. opacus Block. 



Head behind eyes not with transversal groove... 10. 



10. Elytra \\ times as long as pronotum; this reddish-brown. L. 3.5 mm. 



7. Bl. atricapillus jerra, 



Elytra hardly longer than pronotum. L. 3mm 8. Bl. nanus Er. 



11. Head across the eyes as broad or almost as broad as pronotum, dull*:12. 

 Head across the eyes distinctly narrower than pronotum, both glisten- 

 ing. Elytra red. L. 3-3.5 mm 11. Bl. longulus Er. 



-11- 



