ENTOMOLOGICAL SOCIF.TY OF FUANCK. 127 



The following papers were read : — 



Notice of a new Orthopterous genus, of the f a.mi\y MantidcVj 

 by M. Serville. 



Essay illustrative of the history of Entomological Societies, 

 by M. DE Castelnau. 



Description of a new species of Geometridce, of the genus 

 CrocalUs, by M. Donzel. 



Notes on the economy of the larva of BryopMla Algce, by 



M. GUENEE. 



Description of a new species o{ ArgynniSf by M. Lefebvre; 

 at the close of which the author made some observations on 

 the development and variation of the black spots on those 

 species of Satyrus which he had named Leucomelaniens ; he 

 concluded, from their numerous variations, that the position of 

 these, forms a character by which to distinguish the sexes : he 

 further communicated to the Society, that he had observed in 

 his own garden, during the past summer, a great number of 

 Satyrus Galathea. 



Sitting of the 4tii of January, 1837. 



M. Duponchel in the Chair. 



The following donations were announced : — 



Recueil de la Societe d'Agriculture, &c. de Rouen, Nos. 

 XV. XVI. and XVII. 



M. GiRALDES. Anatomical studies, or researches on the 

 organization of the eye, considered in reference to man and 

 certain animals, 



M. Wesmael. a Monograph of the Braconides of Belgium ; 

 also a Monograph of the Odynerl of Belgium ; also a Notice of 

 Ichneumon g]inandromorphus ; also Observations on the species 

 of the genus Sphecodes. 



M. Amyot then communicated to the Society various details 

 contained in the Memoirs of the Agricultural Society of Vienna, 

 on the subject of the injury done to the forests by certain 

 insects. The government having inquired of this Society the 

 best means of entirely preventing, or at any rate of arresting, 

 the progress of this devastation, it obtained a reply, that one 

 of the members being occupied at that time in an extensive 

 work on this very subject, it was necessary to await the result 

 of his researches. 



