i89i.] 



THE BRITISH NATURALIST. 



lOI 



one on the parietal wall, one on the columella, and two — the lower 

 one the largest — on the outer wall. 



Pupa ingersoUi, Ancey M.S., mentioned on p. 64 of the same 

 volume, has also never been described. It is allied to colovadensis, 

 but 2 mill, long, cylindrical, dull-brown, with half a whorl more, and 

 a double lamella on the parietal wall. P. montanella, indicated on the 

 same page as P. coloradeiisis, proves to be a form of P. pentodon. 



While recently in Dorsetshire, the writer found specimens of an 

 Arion which is evidently referable to A. ambiguus of PoUonera, a 

 species not hitherto recognised as British. Examples found at Stur- 

 minster Marshall, belong to the var. armoricana Poll. ; and a single 

 individual from Bailey Gate, found by Mr. W. Wallace, represents a 

 new form siihalbida Ckll., having the sole and sides below the bands 

 creamy white, in strong contrast to the dark back, somewhat after the 

 manner of A .empiriconun var. albolateralis (Roeb.) A. amhigiiiis is 

 perhaps only a variety or subspecies of A. bourguigtiati, from which it 

 differs in its lack of a keel or pale dorsal line, and in the slightly yel- 

 lowish tint of the sole, especially at the sides. It is perhaps not un- 

 likely that A. cifcumscriptus was founded on A. ambiguus, rather than 

 hourgiiignati proper. — T.D.A.C. 



Reports of Societies. 



ENTOMOLOGICAL SOCIETY OF LONDON. 



April 1st, 1891. — Professor R. Meldola, F.R.S., Vice-President, in the chair. 



Mr. G. A. Booth, of Grange-over-Sands, North Lancashire ; and Mr. W. Manger, 

 of New Cross, S.E., were elected Fellows of the Society. 



Capt. H.J. Elwes showed a small but very interesting collection of butterflies 

 from Laggan Alberta N.W. Territory of Canada, taken by Mr. Bean at high 

 elevations in the Rocky Mountains. Amongst them were Colias elis, Streck., which 

 seemed to be very close to, if not identical with, C. hccla of Europe, Argvnnis alberta^ 

 W. H. Edw., and Chionobas sub/iyalina, W. H. Edw. The resemblance between the 

 butterflies of this locality and those found on the Fells of Lapland was very striking 

 some of the species being identical, and others very closely allied. Capt. Elwes said 

 that it was another proof, if one were wanted, of tlie uniformity of the butterflies found 

 (.hrou.^hout the boreal region in tlie Old and New Worlds. 



Mr. G. C. Champion exhibited several insects recent!) receixed Irom Mr. J.J. 

 Walker, from Hobart, Tasmania. The collection included a curious species of 

 Fuificulidi£, with asymmetrical forceps, from the summit of Mount Wellington ; two 



