86 - _ THE BRITISH N ATU-RALfSTl 



this fact, coupled with similar results ascertained with respect to the single-blooded 

 Ennomos mitiimnaria, indicated that the operating cause was one of wide general 

 application, and that valuable results might be looked for if entomologists would 

 turn their attention to the subject. Capt. Elwes said that in his experience in many 

 parts of the Palaarctic region, where there was a combination of heat and moisture, 

 all the commoner species of Lepidoptera occurring in this country attained a larger 

 size and a greater brilliancy of colouring than in colder and drier regions ; and he 

 referred to such species, amongst others, as Pieris brassico: and Argyunis paphia. The 

 discussion was continued by ?\Ir. Jacoby, Mr. Fenn, and others. 



Mr. W. H. B. Fletcher exhibited a long series of Zygana lonicevd from York, and 

 Zygzna filipendula: from Shoreham, Sussex ; also a series of hybrids obtained by 

 crossing these two species. He stated that the eggs obtained from these hybrids 

 were all infertile. Lord Walsingham said this latter fact was extremely interesting. 



Mr. F. W. Frohawk exhibited a living specimen of an ichneumon which had just 

 emerged from a chrysalis of Papilio tamius. 



Mr. C.J. Gahan exhibited a number of species belonging to the genera Lema and 

 Diahrotica, and read a paper on them, entitled "On mimetic resemblances between 

 species of the Coleopterous genera Lema and Diabrotica." Lord Walsingham, 

 Mr. Jacoby, Colonel Swinhoe, and Mr. Champion took part in the discussion which 

 ensued. — H. Goss and W. W. Fowler, Hon. Sees. 



THE SOUTH LONDON ENTOMOLOGICAL AND NATURAL 



HISTORY SOCIETY. 



February 26th, iSgi. — W. H. Tugwell, Esq., President, in the chair. 

 ^Ir. R. J. Anderson, of Suez, was elected a member. 



Mr. Adye exhibited an unusually dark fcvm of Notodonta camelina, with other forms 

 of the same species. I\Ir. H. Moore, Erebus odora from South America. Mr. Turner, 

 Melanippe flnctuata, taken at Brockley ; the specimens showed considerable variation. 

 Mr. Cockerell, Pleliothis armigera, var. umbrosa, Grote., from Wet Mountain Valley, 

 Colorado, larger than the type, the upper wings more or less olivaceous above, the 

 under wings almost without markings below^ Mr. Cockerell made some remarks on 

 Leucania unipiincta, which he stated v^^as a great scourge in America, and was there 

 known as the Army worm. Mr. R. Adkin exhibited long series of the species of the 

 genus Triphcena, Och., from many localities in the British Islands, together with 

 Continental series of some of the species for comparison, and read notes dealing with 

 the geographical distribution and general and local variation of the species exhibited" 

 In dealing with T. orbona (comes, Hb.,^ he pointed out Hubner's typical form, the 

 varieties adsequa and prosequa of Treitschke, and curtisii of Newman, also Hubner'.s 

 consequa, which he considered should be regarded as a form of this species rather than 

 of orbona. Hub., to which it had hitherto been referred and supported his contention 

 by specimens known to be forms of comes, Hb., which agreed with Hubner's figure 

 of conseqiia. He also described the distinguishing characters of these varieties and 



