82 TURRITELLID^E. 



of Spain and Portugal, and in the Mediterranean. If it 

 had not been for an intermediate form which Mr. Barlee 

 obtained near the Arran Isles in the west of Ireland, I 

 should have been inclined to consider this variety a 

 distinct species. Deshayes refers it to the T. cornea 

 of Lamarck ; but the description, " point de stries," is 

 surely inapplicable to our shell. Plate 449 of the ' En- 

 cyclopedic Methodique/ cited by Lamarck, represents 

 likewise a smooth shell. T. terebra abounds in almost 

 every newer tertiary and quaternary deposit here and 

 abroad, occasionally at great heights, as on Moel Try- 

 faen ; of which we have accounts from many a concho- 

 logist 



" And him that vexed his brain, and theories built 

 Of gossamer upon the brittle winds, 

 Perplexed exceedingly why shells were found 

 Upon the mountain-tops, but wondering not 

 Why shells were found at all, more wondrous still ! " 



It inhabits a considerable part of the European seas, 

 from the Loffoden Isles to the ^Egean and the African 

 shores of the Mediterranean, at depths varying from 

 5 to 100 f. 



The " Auger " of Pennant. It sometimes attains the 

 length of 3 inches. In aged specimens the outer lip is 

 very thick, being formed of numerous layers. The whorls 

 are sometimes flattened, or scalariform. 



This common species was described and figured as 

 English by Lister, whom Linnd quotes for it in the 

 ' Fauna Suecica ; ' and that work is cited in his ' Sys- 

 tema Naturae/ where Turbo terebra was first named, 

 with " Habitat in O. Europaeo." No such references 

 are given in Linnets description of Turbo ungulinus, 

 which may therefore have been exotic. Our shell was 

 called by K-isso not only Turritella communis, but T. 

 striatula and by many other names. It is the T. Linnai 



