The Zoologist— May, 1870. 2151 



distinct species, the argument derived from tlieir having labelled specimens of 

 cinerascens with the name migratoria was far from conclusive. Finally, 

 Liune's own description of migratoria applied to the form commonly so called, 

 and not to the form with the arched prothorax. The differences between the 

 two had been pointed out by M. Brunner de Wattenwyl (Ann. Soo. Ent. Belg. 

 xi. 39) so clearly as to have induced M. de Selys Longchamps to recognize 

 Pachytylus cinerascens as a species. The recent discussion had been provoked 

 by the appearance in this country of Acridium peregrinum, and had satis- 

 factorily brought out the fact that, if migratoria and cinerascens (= Christii, 

 Curtis) were really distinct species, both of them had occurred in Britain. 



Mr. Howard Vaughan (on behalf of Mr. Henry Moore, who was present as a 

 Visitor) exhibited some specimens of Dianthoecia conspersa, two of which were 

 so coloured as to bear a singular resemblance to D. Barrettii : they were found 

 on the coast of Devonshire in 1861. Although the varieties of D. conspersa 

 were mixed with true conspersa and true Barrettii, the Lepidopterists present 

 Lad no difficulty in distinguishing between the Barrettii and their simulators. 



Mr. Bond exhibited Epichnopteryx betulina, Zell. (= Psyche anicanella, 

 Bruand), found by Mr. Mitford at Bishop's Wood, Hampstead, in 1869 : the 

 female was distinguished by a snow-white anal tuft ; the larva cases resembled 

 small cases of Psyche fusca, but the habit of the insect was quite different, 

 E. betulina being always found on the upper branches of the birch. (See Ent. 

 Mo. Mag. vi. 94, 186). 



Mr. Stainton exhibited Cosmopteryx Lienigiella, bred from a larva found 

 feeding in the reed {Ariindo phragmites), in Wicken Fen, Cambs. The English 

 specimen was both larger and fairer in tint than the Russian specimens shown 

 at the previous Meeting (S. S. 2145). 



Mr. F. Smith exhibited a larva from Monte Video, profusely covered with 

 hairs or bristles having clavate tips : he presumed it was the caterpillar of a 

 moth, and Dr. Horsfield had described the larva of Limantria as having a some- 

 what similar covering. 



Mr. M'Lachlan added that the larva of Acronycta alni possessed some hairs 

 of the same shape, though few in number. 



Mr. Albert Miiller mentioned that Meyer-Diir had pointed out certain 

 differences between the lan'ae of Argynnis Adippe and Niobe : in his 

 ' Verzeichniss der Schmetterlinge der Schweiz,' published in 1852, that author 

 states that Argynnis Niobe in Switzerland inhabits only the alpine and sub- 

 alpine regions from 3000 — 6600 feet above the sea, and that its larva has in the 

 full-grown state a white dorsal stripe and flesh-coloured spines, whilst A. Adippe 

 is not found at a greater elevation than 3300 feet, and its larva has no white 

 dorsal stripe, but a pale-reddish lateral stripe instead. Mr. Miiller argued, that 

 though the food-plants of both were various species of violet, until this evidence 

 was rebutted, or unless two different larvae produced the same form of imago — 

 unless there were dimorphic larvse — Adippe and Niobe must be considered 



