^20 



THE BRITISH NATURALIST. 



[January 



this variety was described by Moquin-Tandon, it is more slender than 

 the type, and almost glossy. On p. 276 Mr. Roebuck records Avion 

 subfiiscus var. brunnea from Skiddaw Forest. This, we presume, is 

 bninneus, Lehm., in which the bands on the body are confused, and 

 the mantle becomes mottled with brown. 



p. 277. L. E. Adams. A few notes on the Eastern Counties. 

 Notes on a walking tour from Cambridge through Colchester, Ipswich, 

 Yarmouth, Norwich, Ely, &c., to Bedford. In Cambridgeshire he 

 found Helix vivgata var moiiozono (should not this be Subalbida ?) and 

 var. siibcarinata, which is described by Moquin-Tandon as having the 

 last whorl more flattened, and subcarinate. Succinea putris var. alba 

 (the white var. named by Baudon) was found near Haverhill. Near 

 Diss Helix virgat a var. bifasciata, Bouch. was met with, it is white 

 with two continuous brown bands above, and many more or less entire 

 bands below^ Helix ericetorum var. deleta, Moq., (which has the 

 markings above the periphery suffused into a general brownish tint, or 

 at least scarcely separable, while brown lines, more or less entire, are 

 found below), occurred at Roxton, Bedfordshire 



p. 281. J. W. Taylor. Describes Helix pisana var. tenuis, a new 

 variety from Tenby, found by Mr. J. W. Storey. It is exceedingly 

 thin and translucent, and almost uniformily horn colour, traces only 

 of two translucent bands being visible near the mouth. It appears to 

 be an example which has failed to secrete either pigment or carbonate 

 of lime in the construction of its shell. 



Arion circumscriptus, ]ohnston. = Bourgtiignati, Mab. Reading 

 through the description of A . circumscriptus quoted by Pollonera in his 

 recent work on the " Palsearctic Arionidae," there at once dawned 

 upon me the conviction that it w^as none other than boiivguignati ! 

 The body little attenuated posteriorly, the bluish-grey sides, the 

 narrow bands, the white sole — all point to bourguignati, leaving no 

 room for doubt, so far as I can see. The absence of a keel in circum- 

 scriptus cannot be considered of importance, as the ordinary British 

 form of bourgiiignati only shows a keel in juvenile specimens. John- 

 ston's slug was described in the " Edinburgh New Philosophical 

 Journal," 1828, and his name is the oldest one that can be certainly 

 referred to what Mabillo, in 1868, called boiirguignati, so I think there 

 cannot be much doubt that A /ion circiimscviptus is the proper title for 

 the species. — T. D. A. Cockerell. ^ Dec. 13th, 1890. 



