386 TOBNATELLID^:. 



indigena, T. littorea, T. Gray ana ?, and T. nitidissima ? are never 

 truncate at the apex ; still, this appellation has been so long 

 established, that it is better to continue it than add new names 

 to science : the latter remarks are M. Philippics sentiments. 

 We have here a striking illustration of the value of concholo- 

 gical-made genera, since, in consequence thereof, three species 

 of one genus have received as many generic titles, from their 

 shells exhibiting a subcylindrical, a conical, and (if the 

 Skenea ? nitidissima of authors is the T. atomus ? of Philippi, 

 as is probably the case) a discoid form. 



I see no reason to doubt M. Philippics Truncatella littorina 

 (Moll. Sicil. vol. ii. p. 133, tab. 24. fig. 2) being our present 

 species ; the description and figure entirely accord. 



? T. ATOMUS, Philippi ? 



? T. atomus, Philippi, Moll. Sicilise, ii. p. 134, pi. 24. f. 5. 



? Helix nitidissima, Adams. 



? Skenea nitidissima, Brit. Moll. iii. p. 158, pi. 73. f. 7,8, and iv. p. 269. 



This, probably, is M. Philippics species ; it is placed provi- 

 sionally, until some of the Scotch naturalists have supplied 

 notes on the animal, which is abundant on their coasts. It is 

 also taken in Ireland. 



Since the above remark, we have examined our specimens, 

 which fortunately proved to have been taken alive, and find 

 that the operculum is precisely of the same grossly spiral 

 character and sculpture as in Truncatella Montagui and T. lit- 

 torea-, moreover, the eyes in the dried animal are perfectly 

 visible, and show the characteristic white pupil of what may 

 now be safely termed its congener. 



TOUNATELLID^E. 



TOENATELLA, Lamarck. 

 T. FASCIATA, Linnaeus. 



T.fasciata, Brit. Moll. iii. p. 523, pi. 114. D. f. 3; (animal) pi. V.V. f. 7- 

 Valuta tornatilis, Auctorum. 



The following notes are from M. Philippi, ' Enum. Moll. 

 Siciliae/ vol. ii. p. 143 : 



