On referring to the Guide, it will be found that I have pro- 

 posed to make the Cleridse pass on to the Cisidae, and this is 

 beautifully accomplished by means of the European genus 

 PsoA, which has the habit of the Cleridae, but the characters of 

 the Bostricidae. I cannot, however, but acknowledge that it 

 is with regret that I ever infringe on the tarsal system ; since 

 the more I see of exotic forms, the more I am convinced that 

 it will be impossible to study the Coleoptera generally without 

 its assistance : in the present instance, however, it must be re- 

 membered that the Cleridae are inconstant in the numerical 

 structure of the tarsi, as in Necrobia, pi. 350. 



Cis and Anobium (pi. 387.) have been repeatedly united or 

 confounded, but they are readily distinguished by the number 

 of joints in the antennae and tarsi, the latter genus being pen- 

 tamerous and having 11-jointed antennae. 



The following species of our genus are British, and all in- 

 habit Boleti. 



1. C. Boleti Fab. — Boletorum Marsh. 85. 13. 



A very common insect, found from February to August 

 in the Boletus versicolor and under the bark of trees. 



2. C. concinnus Mar. 87. 19. — Norfolk in June. 



3. C. micansi^fl!^. — villosulus Mar. 86. 14<. — Middle of April 



under bark of Willows near Southend. 

 4-. C. hispidus Payk. — micans Pariz. 10. 8. 



5. C. pyrrhocephalus Mar. 86. 15. 



6. C. pygmaeus Mar. 86. 16. — festivum Panz. 6. 7.? 



7. C. rhododactylus Mar. 87. 22. — In Boletus versicolor. 



8. C. nigricornis Mar. 87. 21. ditto. 



9. C. ruficornis Mar. 87. 20. — perforatus Gyl. ? 



10. C. nitidus Fab. — Panz. 10. 9. — June, New Forest, J. C. 



Dale, Esq. 



11. C. fronticornis Panz. 98. 7. 



12. C. bidentatus O/m — Czirt.Brit.Ent.pl.^02. June, Suffolk. 



New Forest and Hurn, in Boletus a^iricularius and 

 on White Thorns. Gyllenhal has referred Olivier's 

 figure to C. Boleti, and Mr. Stephens has done the 

 same; but on looking at the plate, there is little doubt 

 about its being our insect, and on consulting his de- 

 scription it is evident he intended no other than the 

 C. bidentatus. 

 The Plant is Chcnopodium acutifolium ( Sharp Entire-leaved 

 Goosefoot). 



