BALTA. 271 



Corsica ; and (assuming the Pupa Callicratis of Scacchi 

 to be the same species) it ranges to Sicily. According 

 to E/Oth it has been found at Athens. 



This exquisitely beautiful but tiny creature is slow in 

 its movements, and carries its shell nearly upright when 

 it crawls. Puton is said to have found it at a height of 

 1352 feet on granite in the Vosges Mountains. The 

 epiphragm is very thin and glistening. The length of 

 the spire varies considerably in this, as well as the last 

 species. Our native examples are toothless ; but foreign 

 specimens have frequently a tooth on the pillar and an- 

 other within the outer lip ; and I found a specimen in 

 Switzerland which had three teeth, arranged triangularly 

 as in the Pupa triplicata of Studer. 



This species is the Pupa minuta of Studer, P. mus- 

 corum of Draparnaud, Vertigo cylindrica of Ferussac, 

 Pupa obtusa of Fleming (but not of Draparnaud), and 

 it is probably also the P. costulata of Nilsson. 



Genus VIII. BA'LIA*, [Balea) Prideaux. 

 PI. VII. f. 9, 10, 11. 



Body long and slender, always containable mthin the shell : 

 tentacles 4, proportionally short : foot rather broad. 



Shell sinistral, turriculate, thin, deUeately striate and 

 streaked "svith white in the line of growth : spire reversed, long 

 and pointed : mouth squarish, sometimes furnished with a small 

 tubercular tooth on the columella : umbilicus narrow and 

 oblique. 



This generic group has only a single species which is 

 indigenous to this country. A few others are exotic. 

 In the reversed turn of the spire and general aspect, as 

 well as in the shape of the mouth and the straight pillar 



* Bay-coloured. 



