106 THE LAND AND FBESHWATER MOLLUSCA OF DOKSETSHIBE. 



7. z. EXCAVATUS, Sean, pi. 7. 



Body slender, greyish-white, with three or four raised lines along 

 the neck. 



Shell small, rather depressed, more convex on the upper than the 

 lower side, thin, transparent, light-brown or tawny, strongly and 

 deeplv striate in the line of growth; whorls five and a half; 

 umbilicus broad and deep, exposing all the internal spire. L.0.085. 

 B.0.225. 



Hab. Under fallen trees, and among dead leaves and moss 

 in shady woods ; East Lulworth (Kendall). 

 Var. vitrina. Shell greenish-white, transparent. 



Although, it has not been noticed out of Britain, Mr. Grwyn 

 Jeffreys believes " that the greenish- white variety is the Helix 

 vitrina of Ferussac, as well as the H. viridula of Menke, H. 

 petronella of Charpentier, and probably also the H. clara of 

 Held." 



8. z. CRYSTALLINUS, Midler, pi. 7. 



Body greyish-white ; tentacles short. 



Shell depressed, very slisrhtly convex above, almost flat beneath, 

 thin, fragile, pellucid white, someiimes with a erreenish tinge, 

 with fine and equal longitudinal strise, which are almost impercep- 

 tible even with the aid of a magnifying glass ; whorls four and a 

 half to five, slightly convex gradually enlarging, the last more so 

 than the others ; spire scarcely raised ; suture very slight ; umbili- 

 cus small and narrow, scarcely exposing the interior. L.O.OG5. 

 B.0.125. 



Hab. Under stones, and among moss, in woods and damp 

 places. Houghton Wood (J.C.M.P.). Stoborough -, Creech 

 Grange. 



9. z. FULVUS, Midler, pi. 7. 



KOBINSON'S Purleck, p. 178. 

 Body, greyish-black, or slate-colour with very fine black specks. 



Shell pyramidal, nearly flat beneath, horn-colour, or tawny, thin, 

 slierlitlv transparent, smooth, glossy, witb very fine irregular strife 

 whorls five-and-a-half, enlarging gradually, the last obtusely keeled:; 

 suture well marked; spire very obtuse; mouth compressed and 



