182 PNEUMONOBRANCHIATA. 



Helix Lackamensis. Mont. p. 394. t. 11. f. 3. 

 buccinata. F. Alton, E. F. Conch. 100. 

 t. 12. f. 22. 



Bulimus Montacutus. Jeffreys, Linn. Trans, xvi. 

 345. 



Bulimus obscurus. Hartmann. 



montanus. Drap. p. 74. t. 4. f. 22. ; 



Turton, Man. ed. 1. 80. f. 62.; Sturm, Fauna, 

 vi. t. 6.; Pfeiffer, 52. t. 2. f. 10. 



Ena montana. Leach, Mollusc, p. 112. 



In moist beech woods, among decayed leaves, and 

 on the bark of trees. 



Animal pale ; tantacles club-shaped. (Mont., Sturm.) 



Shell five eighths of an inch long, and a quarter 

 of an inch wide, deep chocolate-brown varying to 

 light grey, conically elongated; spire consisting of 

 seven slightly raised but well-defined volutions end- 

 ing in a rather acute point, irregularly and obliquely 

 striate longitudinally, and when magnified having 

 the appearance of a shagreen-like roughness ; aper- 

 ture oblong-oval, with the peristome chocolate- brown 

 and reflected, forming an umbilicus behind the 

 pillar. 



The shell varies considerably in size and ventri- 

 coseness; also in colour, being sometimes whitish 

 horn-colour, and semitransparent, arising, as in other 

 varieties of the kind, from a disordered state of the 

 animal, preventing the secretion of the colouring and 

 chalky matter. 



This species, though not uncommon on the Con- 

 tinent, appears to have been first described by 

 Colonel Montagu, who received it from the south 

 of England. 



