Eiitomoloijical Society. 



6151 



Exhibitions. 



Mr. Stevens exhibited a number of Coleoptera found in nests of Formica fuli^iinosa 

 and F. rufa, amongst which were examples of Myrmedonia cognata and M. lugens, 

 and a line series of Diuarda Maerkelii, taken near Guildford, of which he distributed 

 specimens amongst the members present. 



Mr. Smith exhibited a specimen of Myrmica cingulata, found by Mr. S. Stevens 

 in a nest of Formica fusca, and examples of Myrmica lippula and Ponera contracia, 

 found by Mr. Janson in comj)any with Formica fuliginosa ; he wished those entomo- 

 logists vvho were in the habit of searching for Coleoptera in ants' nests would bear in 

 mind that several rare species of Myrmicidae are only to be met with in the nests of 

 the different species of Formica, and that two or three such species of Myrmica well 

 known to continental entomologists have not yet been discovered in this country. 



Mr. Janson exhibited an example of a species of Trichonyx, found by Mr. 

 E. Shepherd in a colony of Formica fiava, under a flint on the " Hogsback,'' near 

 Guildford, on the 21st ult. Mr. Janson observed that it was the same species which 

 he had alluded to in his paper on Coleoptera frequenting ants' nests, in the 

 * Entomologist's Annual' for 1857, but he had not yet been able to identify the insect 

 with either of the tw^o known continental species of this genus. 



Mr. Janson also exhibited specimens of an Heraipterous insect which he had taken 

 on several occasions in nests of Formica rufa at Hampstead and Highgate, and which 

 he was disposed to refer to the Microphysa myrmecobia, Maerkel, in Germ. Zeitsch. 

 f. d. Ent. v. 262, 276 (1844), with whose description the individuals before the 

 Meeting agreed pretty closely, differing, however, somewhat in the sculpture of the 

 head and thorax. He remarked that he had met with the male only, the female, 

 according to Germar, has the hemelytra truncate — a structure obtaining in M. Psela- 

 phiformis, JVestwood, Annales de la Sue. Ent. de France, iii. 642, lab. vi. f. 3 (1834). 

 [Loricula Pselaphiformis, Curtis^ Ent. Mag. i. 197 (1833) ; Microphysa pselaphoides, 

 Burmeister, Handb. d. Entom. ii. 286 (1835) ], and which may possibly prove to be 

 the female of the present species, although here the apical joints of the antennae are 

 decidedly the longest, and the rostrum is broad and scarcely exceeds the head 

 in length. 



Mr. Weslwood observed that so long a period had elapsed since his attention was 

 given to the species in question, that he could not then express an opinion in this 

 matter; the specimen which Mr. Janson had placed in his hands would enable him 

 to institute a comparison, the result of which he would communicate at a future 

 time. 



Mr. Stainton exhibited a specimen of a new species of Cemiostoraa, bred by Mr. 

 T. Wilkinson, from Lotus, and for which the name " Lotella '' had been proposed : 

 the insect is closely allied to C. scitella, from which it differs in the narrower anterior 

 wings, the different position of the radiating dark lines in the cilia, and in having the 

 apical spot from which these lines appear to emanate, black, instead of tawny as in 

 scitella. 



Mr. F. Smith exhibited two hermaphrodites in the aculeate Hymenoptera, viz., a 

 specimen of Nomada baccata, and of Andreua niiida ; in both insects the male cha- 

 racters were on the right side of the body. 



Mr. Douglas exhibited pupae of a Lepidopterous insect found under bark of syca- 

 more, and presumed to be those of Stigmonoia Regiana ; also a living example 



