346 JOURNAL OF" CONCHOI.OGY, VOL. 13, NO. II, JULY, igi^. 



var. albicans. — Shell, white, without markings, apex, dark 

 brown to black. 



§ 2. Distribution. 



So far I have collected this species in four vice-counties at some 

 eight different places, and have also received specimens from two 

 other vice-counties. And here I must express my best thanks to our 

 eminent conchologist, Mr. J. W. Taylor, who from time to time kindly 

 verified my specimens, and also to Mr. J. Davy Dean, of Lancaster, 

 for similar help. 



(a) Leicestershire. 



In March, 19 lo, I took H. heripensis at ^Valtham-on-the-Wolds, 

 five miles N.E. of Melton Mowbray. The habitat was the grass- 

 grown floor of an extensive surface quarry in the Lincolnshire l>ime- 

 stone lying at an altitude of about 700 feet. The moUuscan association 

 was as follows : — 



DOMINANT WITH 



Helicella caper a ta Mont. Ap-ioliiiiax agrestis L. 



Helicella heripensis Mab. 

 Hygroinia Jiispida L. 

 Pupa miiscorum L. 



{b) Huntingdonshire. 



At Stibbington, in the N.W. corner of the county, I found H. 

 heripetisis in Se[)tember, 19 10, along the wide grassy margin of a high 

 road. Here the association of species was as follows : — 



DOMINANT WITH 



Helicella virgata daCosta Helicella heripensis Mab. 



(sub-dom.) 

 Helicella cape7'ata Mont. 

 Helicella cantiana Mont. 

 Helix nemoralis L. 

 Hygroinia hispida L. 

 Hygromia rufescens Penn. 



(t) Northamptonshire. 

 At four localities in the northern part of the county, Autumn, 19 10. 

 I. At Barnack, on Oolitic Limestone, i 70 feet. 



DOMINANT WITH 



Helicella virgata daCosta Helicella cantiana Mont. 



Helicella heripensis Mab. Helicella itala L. 



(Note H. caperata absent). 



