JOURNAL OF CONCHOLOGY. 329 



most equal in size to the central, crenulations beyond ; while 

 in the case of P. striata there are two small teeth, not notched, 

 on either side of the central. This constitutes a radical differ- 

 ence of dentition. 



Page 261. — '■p. Woldema rii Ki e n . = Triton idea . ' 

 In Vol. III. we vainly search for Woldemarii as a Tritoti- 

 idea. but we find it set down as a Cominella. Even then, the 

 identification seems unfortunate, as Tryon makes P. V/oldeniarii 

 equal C. macidata Mart. Kiener's figure is far more like C. 

 limbo r a Laui. 



Helix reveiata at Newquay. — A list of the land 

 shells of Newquay, Cornwall, published in the " Journal of 

 Conchology " for 1887, pp. 164 — 166 by Mr. J. H. James, 

 does not include the above shell. I found Helix reve- 

 iata at Nev/quay last summer, in its usual habitat, viz., high 

 grassy downs facing, or not far from the sea. I do not think 

 the shell has been previously recorded from the north coast 

 of Cornwall. A few years ago I searched for it at the Lizard. 

 For five days my quest was fruitless, until at last I happened 

 to pick up a dead shell of H. aspersa, inside of which was a 

 living specimen oi H. reveiata.— \Kyn.\ A. H. Cooke. 



Limnsea truncatula floating.— I was much interested 

 in Mr. Nelson's remarks, respecting the floating habits of the 

 Limnaeidse, contained in his paper on ' A Day's Collecting near 

 Howden, Yorks.,' on page 263, ante. Like Mr. Nelson I have 

 never seen L. aiiriadaria in the act of floating ; I remember, 

 however, while waiting near Authorpe railway station in Lincoln- 

 shire for the arrival of ]\Ir. Roebuck whom I v>as to meet there, 

 noticing a good number of molluscs floating on the surface of 

 the water in a small pond, and on procuring some of them they 

 proved to be unusually large specimens of L. truncatula. — H. 

 Wallis Kew, 13th February, 1888. 



