100 PHYTOPHAGA. 



ent individuals. Those from M. Pfeiffer are, I 

 think, the young of V. cristata, and the others (I for- 

 get from whom, but with the name of Draparnaud) 

 the young of V. piscinalis. Mr. Miller introduced 

 V. minuta into his catalogue of the land and fresh- 

 water shells of the environs of Bristol, but no speci- 

 men of it is preserved in the Bristol Museum. Dr. 

 Turton says, that his V. minuta is the Helix serpu- 

 loides of Montagu. This is well known to be a marine 

 shell, referrible to the genus Skenea of Fleming. Mr. 

 Thompson of Belfast has, however, favoured me," 

 continues Mr. Alder, " with the examination of a shell 

 which may possibly turn out to be the V. minuta 

 Drap., though I suspect it to be marine." 



