150 



Mr. Stainton exhibited some dead larvs of Hyponomeuta padella on apple leaves. 

 They had been transferred, when quite young, from their natural food, the hawthorn, 

 to an apple tree, which was the usual food of a closely-allied form : the transferred 

 lavvss had at first commenced eating the apple leaves, but soon ceased to do so, and 

 died, apparently for no other reason than that the food did not agree with them. Tliis 

 fact was adduced not only as an instance of inability on the part of the larvae to adapt 

 themselves to circumstances, but also as having a material bearing upon the question 

 of the specific distinctness of the hawthorn-feeding and apple-feeding forms of Hypo- 

 nomeuta. 



Mr. S. Stevens exhibited some twigs of lime trees, gathered at Kennington, which 

 had been completely stripped of their leaves (whole trees having shared the same 

 fate) by the larvs of a Tortrix, apparently belonging to the genus Lozotsenia. 



Mr. Bond exhibited three varieties of the male of Anthocharis Cardamines, a species 

 but little liable to variation, all captured near London; and a hermaphrodite of the 

 same species, also captured near London, and having female characters on the right 

 side and male characters on the left side. 



Mr. Bond also exhibited a hermaphrodite Papilio Machaon, from Whittlesea 

 Mere, in which again the right side was of the female form and the left of the male 

 form. 



The President exhibited drawings of two hermaphrodite honey bees. In the first 

 specimen the right side partook of the male characters, the antenna, eye, anterior leg 

 and intermediate leg being male, and the wing and posterior leg being female or 

 worker ; the left side was entirely worker. The second specimen was partly male, 

 partly worker ; the antenna, eye, wing and legs, on the left side were all of the true 

 male form, and the abdomen was considerably enlarged on the same side. 



The President also exhibited specimens of Braula CEeca, an insect which had been 

 found on the Continent to be very destructive to honey in hives ; it had only recently 

 been imported into this country along with the Apis Ligustica, from a hive of which 

 species the exhibited specimens had been taken. 



Mr. Waterhouse exhibited British specimens of a species of Homalota, which, 

 being apparently undescribed, he named and characterized as follows : — 



Homalota plattcephala, n.s. 



Hom. linearis, depressiuscula, parum nitida, fusco-nigra; elytris fusco-testaceis, 

 basi fuscis; pedibus testaceis, femoribus fuscescentibus ; capite subquadrato, 

 fronte piano ; thorace subquadrato, coleopteris angustiore, supra leviter canali- 

 culato, postice late foveolato; abdomine segmentis 4 primis crebre punctulatis, 

 segmento quinto parcius punctato, sexto fere Isevigato. Long. 1| lin. 



Mas. Abdominis segmento sexto dorsali tuberculo compresso munito. 



In size, form, colouring, and in the structure of the antennae, this species very 

 closely resembles the Homalota gregaria ; it, however, maybe readily distinguished 

 by the larger size of the head, and the subquadrate and depressed form of this part ; 

 the parts of the mouth being more produced, and the fifth abdominal segment being 

 rather sparingly punctured. The male characters are moreover very different, nearly 

 resembling those of H. sulcifrons, Kirhy (H. pavens, Erichs). From this insect 

 H. platycephala differs in being smaller and narrower, in the form of the head, and in 



