Entomological Society. 270 
depressis, capite duplo brevioribus, subtriangularibus, intus dente 
armatis. Long. corp. (mand. excl.) lin. 10.—Hab. in Mala- 
baria. 
/Egus distinctus, Hope MSS. Niger, nitidus, capite et pronoto 
elytrorum latitudine ; mandibulis falcatis, basi supra dente acuto 
armatis ; pedibus et elytris piceis; his 7-striatis, lateribusque 
punctatis. Long. corp. (mand. excl.) lin. 124. 
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 antennz 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 Melitea Euphro- 
syne, taken at Darenth Wood; likewise varieties of Fidonia atomaria 
and Cidaria fluctuata; also a fine specimen of the rare Chareas 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 Cresus 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 lst of January last ; stating at the same time his opinion, that in 
those orders of insects which ndergo an incomplete metamorphosis 
(having active larve and pupz 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 
