Blackburn : Mollusca of Driffield and Neighhoiirhood. 36 



ViTREA RADIATLLA \ve have found on two occasions at Hornsea on the 

 south side and has been verified by Mr. J. W. Taylor ; also at Kelley- 

 thorpe Marshes. 



ZoNiTOiDES NITIDUS we believe is found in the district, but it needs 

 verifying-. 



EucONULUS FULVITS is common everywhere. 

 PuNCTUM PYGM^UM. Tibthorpe Wold Chalk Pit. 



Pyramidula rotundata is found fairly g-enerally, but not in g-reat numbers. 

 We have taken it on Wansford Road, Scarborough Road, King's Mill, 

 Cowlam, Sledmere, Bainton. 



Hellicella virgata is found in g-reat profusion. At Naflferton the sward 

 on the roadside is alive with it. At Kelleythorpe we found some large 

 specimens. One measured 13 mm. across. The varieties are very 

 marked and beautiful. 



Hellicella itala is rather rare. We have taken it at Tibthorpe, on the 

 Scarborough Road, near Brandesburton, Cowlam, Fimber. It is very 

 plentiful where it is found but is very local. 



Hellicella caperata is somewhat local. We have taken it largely at 

 Hornsea on the bent grass ; also at Flamborough, Cowlam, Tibthorpe, 

 Scarborough Road, and Pockthorpe Road, Driffield, but not commonly. 

 'Cochlicella cantiana we have taken at Flamboroug-h, Bridlington, 

 Foston (in abundance, fine specimens with very red lips). North 

 Froding^ham, Bainton, Rudston, Skipsea, Hornsea, Driffield, Kelley- 

 thorpe, Lund Wold. This species differs much according to the food 

 it eats and its surroundings. Where these sneiils are found on lush 

 grass swards they are large in size, thick in substance, and the part 

 near the mouth of the shell is very dark red to pinkish. On the other 

 hand where they are fovmd on the roadside, especially on nettles, of 

 which they are very fond, they are smaller in size, almost transparent, 

 and the veins and other body markings are very pronounced and 

 beautiful. At first sight the markings appear to be in the shell. 



Hygromia granulata (Jeffries' Helix sericea) needs confirming-. 



Hygromia hispida with its variety hispidosa is very common. 



Hygromia rufescens is found pretty generally. It varies much in colour. 

 It is found in great abundance on the reeds near the canal on the 

 Wansford Road. 



Vallonia costata we took in a chalk pit at Tibthorpe. 



Vallonia pulchella in fair quantities on Wansford Road, Scarborough 

 Road, and generally. 



Helicigona arbustorum is found at Croom, near Sledmere, only. 



Helix ASPERSA is found g-enerally. The markings have been very deep 

 during the last three years, but the variety of them has not been nearly 

 as great as we have found in other districts. Whether it is a question 

 of soil or weather remains to be proved. 



Helix nemoralis is common, the banding- very various. A colony on 

 Nafferton Road had defective and broken banding-s on a pink ground ; 

 the animals were of a lightish colour, some of them being of a beautifully- 

 mottled green and slaty colour. But there was no uniformity about 

 them. The animals were dark when you expected them to be light and 

 vice versi. The lightest shells had the darkest animals in. 



Helix hortensis is not common. We have taken it at King-'s Mill, 

 Driffield, Bainton, Kirkburn Road, Tibthorpe, and Lund Wold. 



Ena OBSCURA is found on the Wansford Road, Scarborough Road, Driffield, 

 near Middleton Ings, Tibthorpe, and York Dale. 



COCHLICOPA LUBRICA is found everywhere in isolated specimens but never 

 in colonies. 



1904. December i. 



