PREFACE. V 



which, with the exception of the first Stirps, the metamorphosis 

 of which is aS* yet unknown, are named from the form of the 

 larvse ; viz., the second Stirps Elongates, the third Stirps Acro- 

 ceph.al(B, the fourth Stirps Amblocephalce, and the Jtfth Stirps 

 OphthalmiccB. These are described in detail in pages 258-9. The 

 special character of these divisions, exhibited in the metamorphosis, 

 is strikingly confirmed by the perfect Insect, which, in each of 

 these Stirpes, has a peculiarity obvious to every observer. 



In conclusion, it is my duty to state that the descriptive part of 

 this Catalogue has been performed by Mr. F, Moore, the Assistant 

 in the Company's Museum ; and the experienced entomologist will 

 recognize the skill and accuracy of Mr. J. O. Westwood in the 

 preparation of the Illustrations. 



THOMAS HORSFIELD. 



December 7th, 1857. 



