26 



before the Revolution ; and a paper on the law against grass- 

 hoppers in the sixteenth century. Both papers are published 

 in " Science." Farther, the discovery of two entomological 

 papers by Th. Say, not included in Le Conte's edition, in 

 Psyche ; the types of Gelechia in the collection of the Mu- 

 seum, in Papilio ; and several biological notes in the Canadian 

 Entomologist. 



The principal scientific work was done for the monograph of 

 the early stages of the Odonata. By numerous additions, and 

 generous help here and abroad, the material is now so enlarged 

 that the first part (which is ready for publication), the Gom- 

 phina, is many times richer than the monograph published ten 

 years ago. 



The Lamellicornia of the general collection have been re- 

 arranged, and fill three cabinets. 



