THE ENTOMOLOGIST. 



131 



I shall be obliged to any entomologist who will state his 

 experience in rearing Sesia Apiformis. 



Edtvard B. Poulton. — In answer to the first query, T can- 

 not say that I have any rule : I have rarely, if ever, received 

 specimens worth returning; but of course I should return 

 specimens if desired: they usually go in the fire. 2. Offers 

 in the Exchange list are never charged. 3. t cannot think 

 of describing insects sent for names: it would be impossible. 

 4. Livornica is a very rare species. 5. Sugar on trunks of 

 trees or fences anywhere: I prefer exposed trees to those in 

 ^ ^^'ood. Edward Newman. 



Economy of ChalcidicB. By Francis Walker, Esq., F.L.S. 



(Continued from p. 114.) 

 Encyrtus corniger, Cerapterocerus mirabilis, and Ectroma 

 fulvescens, here figured, are types of three genera 



of 



ENCYKTUS CORNIGER. 



CERAPTEROCERUS MIRABILIS. 



Encyrtidae, and are remarkable forms : the first and second, 

 because of the dilated basal joint of the antenna; ; and the 



