TAYLOR: ON HELIX ARBUSTORUM. 247 



Var. minima Pfr. Shell solid, yellowish, somewhat unicolored, umbilicated, 

 Diam. maj. 14, min. 13, alt. 10 mill. 



Pfeiffer records this variety from Mount Glocfcner in Carinthia, 

 at an elevation of about 8600 ft. above the sea. I am not aware 

 of this form having been noticed in this country. 



Var. alpestris Ziegl. Shell half the usual size, spire more raised. Diam. maj. 

 18, min. 15, alt. 12 mill. (= Helix si(fia/J>zna Hsn-tm. in sched. — var. 

 alpicola Moq-Tand. — var. tiiinor Pfr. and — var. alfina). 



Found numerously on the marshes by the side of the River 

 Lea, Hoddesden, Herts; Mr. W. Nelson has found it on the warp 

 lands near Goole; Mr. Roebuck on the slopes of Ingleboro'. It 

 is recorded from Knottingley by Mr. J. Wilcock; from Scarbro' — 

 as var. alpina — by Mr. Gilliver; from Knaresbro' by Mr. Black- 

 burn; and from near Banbury by Mr. Pidgeon. Mr. Ponsonby 

 says it is found also at Buxton. 



In Scotland it occurs, but rarely, in several parts of Perth- 

 shire and Aberdeenshire (F. B. White, 1873). Five years subse- 

 quently he found it abundantly at Glen Tilt, Perthshire, but 

 confined strictly to the limestone. Mr. H. Coates found it rather 

 common on the banks of Craigeour Burn, Perthshire. 



Moquin-Tandon records it from the Jura and the Alps, and 

 I have found it at the summit of the Gemmi pass at an altitude 

 of about 7300 ft, and on the Righi, Switzerland. 



Var. conoidea Westerlund. Shell large, conical, irregularly striate, with 

 transverse somewhat confluent pale yellow markings, subperforate. 

 Diam. 24, alt. 26 mill. 



A specimen at Castle Howard, and a few by the city walls, 

 York (Christy). Found also in Sweden. 



Var. calcarea Hogberg. Shell thick, solid, dull chesnut color, marked with 

 yellow, mouth dull purple. Diam. 24, alt. 18 mill. 



Pfeiffer does not give any indication of locality. Not known 

 as British as yet. 



