VERTIGO. 261 



This species differs from V. pygmaa in being more 

 cylindrical_, of a paler colour and nearly transparent, 

 and especially in tiie numerous and sharp transverse 

 strise, as well as in not having any rib either outside or 

 inside the mouth. 



It is questionable whether the V. alpestris of Ferussac 

 is the same as our shell, because he gave no description ; 

 and his original specimens appeared to me, from tw^o 

 careful examinations which I made in 1860 and 1861, 

 to be the marsh variety (pallida) of V. pygmcea, and 

 not Alder^s species. I have, however, no doubt of the 

 present species being the Pupa ShuUlewoythiana of 

 Charpentier (Zeitschr. f. Malak. 1847, p. 148), having 

 compared with that naturalist the specimens I collected 

 in Switzerland. The Pupa borealis of Morelet from 

 Kamtschatka appears also to belong to this species. 



5. V. substria'ta *, Jeffreys. 



Alaa auhstriata, Jeifr. in Linn. Trans, xvi. p. 515. Fupa szihsfriata. 

 F. & H. iv. p. 108, pi. cxxx. f. 3. 



Body grey of different shades : snont short, bilobed : te7ita- 

 cles slender, cylindrical or club-shaped, and divergent ; bulbs 

 equal to about one-fourth of their length : foot of a hghter 

 colour, thick, short, narrow and keeled at the tail. 



Shell oval or subfusiform, rather thin and semitransparent, 

 glossy, pale yellowish-horncolour, very strongly and obliquely 

 striate and almost ribbed in the line of growth, but less so on 

 the body whorl, which is faintly striate spirally : periphery 

 rounded : epidermis rather thick : whorls 4^, very convex or 

 cyhndrical, and suddenly increasing in bulk, the penultimate 

 Avhorl slightly exceeding in breadth the last, which occupies 

 about one -half of the shell : spire short, very abrupt and 

 bluntly pointed : suture remarkably deep : mouth semioval, 

 contracted or sinuous in the middle of the outer edge ; teeth 

 from four to six, viz. from one to three (usually two) on the 



* Slightly striate. 



