VERTIGO. 257 



the Connemara specimens with some from Germany. 

 The latter are the largest. 



This species differs from V. antivertigo in being larger, 

 more ventricose, and of a much lighter colour, in the 

 mouth and outer lip not being contracted, and especially 

 in the number and position of the teeth, which never 

 exceed four, instead of being from six to ten as in that 

 species. From V. pygmcea it may be distinguished by 

 being twice the size and very much more veutricose, and 

 also of a lighter colour. The difference is equally great 

 between all the three species. V. Moulinsiana resembles 

 V. antivertigo in form and V. pygmcea in the number of 

 teeth. It is among the largest of our native species of 

 Vertigo. 



It is the Pupa Aftglica of Moquin-Tandon's ' Cata- 

 logue of the Mollusca of Toulouse,' but not that of 

 Alder or of Potiez and Michaud ; and it is the P. Char- 

 pentieri of Mr. Shuttleworth in Kiister's edition of 

 Martini and Chemnitz, and my P. Desmoulinsiana. The 

 P. arctica of Von Wallenberg (Mai. Bl. 1858, p. 99, pi. i. 

 f. 3, and a, b, 4) from Lapland is perhaps a variety of the 

 present species, differing in not having the second and 

 smaller tooth on the outer lip. 



3. V. PYGM^E'A*, Draparnaud 



Pupa pygmcea, Drap. Hist. Moll. p. 60, pi. iii. f . 30, 31 ; F. & H. 

 iv. p. 106, pi. cxxx. f. 4-6. 



BODY slender, expanded and rounded in front, very gradually 

 narrowing and pointed behind, of a dark greyish-slatecolour, 

 closely but indistinctly tubercled : mantle of a reddish hue, 

 finely speckled with black : tentacles very close together at the 

 base, but considerably diverging, with oblong bulbs ; in the 

 place of the lower tentacles two black spots are perceptible 

 with a high magnifying power -.foot truncate in front, speckled 



* Dwarf. 



