ENTOMOLOGICAL SOCIETY OF LONDON. xli 



Mr. E. Doubleday then called the attention of the meeting to 

 the structure of the anterior wings in Zetixidia Luxeri, Hiibner, a 

 rare butterfly from the Indian archipelago. 



In this insect the third median nervule, soon after its origin, 

 throws oflPa short branch, which is directed upwards, then slightly 

 outward, when it becomes atrophied, and confounded with the fold 

 between the second discoidal and the third median nervule. Mr. 

 E. Doubleday considered this deviation from the usual structure 

 of the wing in the diurnal Lepidoptera as of great interest, and 

 likely to assist in ascertaining the true structure of the wings of 

 some of the Hcpiolidce and other Heterocerous Lepidoptera, which 

 is so much more complicated than that of the Rhopalocera. He 

 pointed out the resemblance between this short nervule and the 

 traces of the discoidal nervure and nervules often visible in the 

 cell of the anterior, and sometimes of the posterior wings of the 

 Heliconidce, and some other butterflies; and also that in these 

 insects the discoidal nervure and its nervules are almost always 

 represented by distinct folds, which have by some authors been 

 mistaken for nervules. He considered it of the greatest import- 

 ance, in reference to the Pterology of insects, to attend strictly to 

 these rudimentary nervules, and to avoid most carefully any care- 

 less or inaccurate descriptions of them. He believed that they 

 will be found to indicate either the introduction of an additional 

 element into the structure, or the proximate disappearance of one 

 already existing ; and that these changes depended more on the 

 position that the animal occupies in the system of nature, than on 

 any modification in its habits. 



Mr. J. F. Stephens exhibited a living larva of Graphiphora sub- 

 rosea, which had been reared from the egg by Mr. Doubleday. 

 Also specimens of Gracillarla V.Jlava, bred from the larvae found 

 in the wine corks previously exhibited by Mr. E. Doubleday. This 

 insect, he remarked, until within a few years, was very rare in 

 collections, but had latterly been found in plenty by Mr. Bedell in 

 wine cellars. As it differs considerably from the other species of 

 the genus Gracillarla, he proposed to separate it from them under 

 the name of Oinophila. 



Mr. J. W. Douglas exhibited specimens of a new species of 

 Microsetia, for which he proposed the name o^ Stephensella. 



Mr. Weir remarked that two distinct insects have commonly 

 been confounded in England under the name of Spinolota trima- 

 culana, one of which feeds on the whitethorn, the other on the rose. 



Mr. Westwood made some observations on the Penihophera 

 nigricans of Curtis, showing that it could not be generically asso- 



