Entomological Society, %^1 



depressis, capite duplo hreviorihus, suhtriangularihns , intus dente 

 armatis. Long. corp. (mand. excl.) lin. 10. — Hab. in Mala- 

 baria. 

 .^gus distinctus, Hope MSS. Niger, nitidus, capite et pronoto 

 elytrorum latitudine ; mandibulis falcatis, basi supra dente acuta 

 armatis; pedibus et elytris piceis ; his 7-striatis, lateribusque 

 punctatis. Long. corp. (mand. excl.) lin. 12 J. 

 A correspondence between Messrs. Melly and Westwood on the 



extent of the detrimental effects of insects in dissipating the active 



principle of vegetable manure was also read. 



March 4th. — The President in the Chair. 



The President announced the terms and subjects of the Essays for 

 two prizes of £5 each, offered by the Rev. F. W. Hope, one being 

 upon the natural history and medical properties of vesicatory insects, 

 and the other upon the natural history and early stages of the genus 

 Stylops. 



The Secretary announced that the Address delivered by the Pre- 

 sident at the last Anniversary Meeting had been printed for distri- 

 bution among the Members. 



Mr. Evans exhibited a monstrosity in the common moth, Arctia 

 Caia, in which the antennae and wings of the left side of the body 

 were much smaller than those of the other side, without however 

 showing any appearance of gynandromorphism. 



Mr. S. Stevens exhibited a remarkable variety of ilfe/zY<^a Euphro- 

 syne, taken at Darenth Wood ; likewise varieties of Fidonia atomaria 

 and Cidaria fluctuata ; also a fine specimen of the rare Charceas nigra, 

 taken at Leith Hill in September last. 



Mr. E. Doubleday exhibited a specimen of a new and large species 

 of Polyommaius from the Missouri, being the fifth species of that 

 genus which inhabits North America. 



Mr. Westwood exhibited four hitherto unfigured Assamese species 

 of the genus Papilio, which he had received from Major Jenkins 

 (since published in the 'Arcana Entomologica'). 



He also exhibited a specimen of Croesus septentrionalis with one 

 of the hind feet much smaller than the other, which he regarded as 

 a case of arrested development ; and also a large apterous Phasma 

 from Mexico, collected by Mr. Coffin, one of the hind legs of which 

 was also rather smaller than the other, but destitute of the small 

 foliaceous appendages of the femur, tibia and basal joint of the tarsus, 

 and which he regarded as a case of reproduction in consequence of 

 the details given by Mr. Fortnum at the meeting of the Society on 

 the 1st of January last; stating at the same time his opinion, that in 

 those orders of insects which ndergo an incomplete metamorphosis 

 (having active larvae and pupae similar to the imago), reproduction of 

 limbs alone takes place, those insects which undergo a complete 

 metamorphosis being considered by him as incapable (so far at least 

 as hitherto observed) of undergoing such a reproduction ; and which 

 opinion seemed to be confirmed by the remarks of M. Schneider upon 

 the genus Raphidia, recently published in his elaborate monograph 



