56 



were lying in the same locality. So far as he could gather, 

 they were taken considerable distances apart, and he thought 

 we ought to look elsewhere for the causes of these spots. 

 He then referred to the cases of A. betularia, L., and T. 

 crepuscularia, Hb., in which the variation has become per- 

 manent in certain localities. Several other members con- 

 tinued the discussion, and Mr. Adkin exhibited Cleoceris 

 viminalis, Fb., a species which he stated had some little 

 bearing on the question of permanent variation. From 

 twelve larvae sent him from Barnsley, he expected to rear only 

 the black form of the species obtained in that locality ; but 

 among them he had bred one of the ordinary form of the 

 species as found in the south of England. Mr. South said 

 he had received forms of this species from Glasgow quite as 

 dark as those from Barnsley. Mr. Sheldon contributed obser- 

 vations on collecting T. crepuscularia, in Derbyshire, from 

 which, it appeared, that in some of the woods which had 

 been thinned, the insect was generally found on the trunks 

 of oak trees, and was the light form, whereas those found in 

 another wood which was very thick, were very dark, and, in 

 some cases, almost black. 



Mr. J. A. Cooper exhibited Axylia putris, L., Zonosoma 

 orbicularis Hb., Eupithecia stibftdvata, Haw., and Tephrosia 

 biundularia, Bork., the latter bred from a female captured in 

 June last, the larva having fed upon knot-grass, 



Mr. T. R. Billups exhibited the following Coleoptera : — 

 Choragus sheppardi, Kirb., from Broadstairs ; Trox sabu/osus, 

 L., from Chobham ; the delicate little longicorn Molorchus 

 minimus, Scop,, and Mycetoporus longulus> Mann., taken at 

 Bookham, on the Society's excursion, June 26th ; and the 

 scarce Panagceus quadripusttilatus, Sturm. Two'jlocal species 

 of Hemiptera — Phylus coryli, L., and P. avellance, H. S., 

 taken at the Society's excursion to Westerham, in July last, the 

 immature form of Temnostethus pusillus, Schiff., Microphysa 

 elegautula, Baer., from Broadstairs, and also the Homopteron 

 Ledra aurita, L., from the same locality. 



