76 JOURNAL OK dONCHOLOGY, VOL. I3, NO. 3, JULY, I9I6. 



The whole work has been very thoroughly done, and the more obscure orders 

 are throughout adequately dealt with : thus, the botanical part includes chapters 

 on Marine Algre, Freshwater Algre, and Hepatics ; and separate sections are 

 devoted to such inadequately studied creatures as the Infusoria, Porifera, Cnelen- 

 terata, and Myriapoda. 



The chapter on Mollusca is written by the Editor himself. The land and 

 freshwater list records 93 species, among which may be specially noted Vertigo 

 niintitissinia and V. nioiilinsiana^ the latter from marshy ground near Tolland 

 Bay and Brading. These localities are additions to the list given in the J. of 

 Conch., vol. 12, p. 214. Mr. Morey points out that the records oi Sturittea oblonga 

 given in the Victoria County History of the Isle of Wight probably refer to speci- 

 mens found in an alluvial deposit. Of marine shells the list is rather disappointing, 

 totalling only 140 species, nearly the whole of these being either littoral species 

 or dead shells washed ashore from the Laminarian zone. It is remarkaljle that, 

 apart from the few species recorded in the Victoria History, this is the first pub- 

 lished marine list for the island. 



ABNORMAL RADULA OF VITREA LUCIDA (Drap.). 



By J. E. COOPER. 



(Read before the Society, September 8, 1909). 



The illustration below is that of the radula of an exceptionally fine 

 Viirea lucida collected at Castle Rising in 1907. It is remarkable 







for the row of deformed teeth nearly in the centre of the radula. I 

 cannot suggest any cause for this. Mr. W. Moss informs me that in 

 his experience such aberrations are very rare. 



