172 PYRAMIDELLID^. 



local and by no means common. Peach lias found it in 

 the boulder-clay of Caithness, and Philippi in a post- 

 tertiary bed at Palermo. It ranges north and south, 

 from Upper Norway (M* Andrew and Barrett) and Ber- 

 gen (Sars), through the Mediterranean and Adriatic, to 

 the iEgean (Forbes), at depths of from 10 to 41 f. The 

 1st variety was procured by me in the Hebrides, and by 

 Forbes in the iEgean ; it resembles the Chemnitzia niti- 

 dissima of Searles Wood, a Crag fossil. The 2nd variety 

 is rather widely distributed in our seas, from Guernsey 

 to Shetland ; and it has been recorded as Dalmatian by 

 Brusina, iEgean by Forbes, and Algerian by Weinkauff 

 under Dunker's name of Eulima subcylindrica. This 

 variety has also been found by M f Andrew in Upper 

 Norway, by Loven in Bohuslan, by Martin in the Gulf 

 of Lyons, by Mace at Antibes, and by Dummy at 

 Ajaccio. Upwards of twenty years ago I referred the 

 latter variety to the Eulima affinis of Philippi, but (as 

 I am now convinced) erroneously. The size of that 

 species is stated by him to be more than half as large 

 again as 0. acicula ; and he compared it with E. nitida. 

 I had previously described it under the name of Euli- 

 mella gracilis, and Requien as Eulima turritellata. My 

 present and more matured opinion coincides with that 

 of Clark and Malm in uniting it with 0. acicula, because 

 some specimens evidently form a passage from one to 

 the other, and the distinction rests only on a single and 

 variable character, viz. the comparative convexity of the 

 whorls. The 3rd variety was dredged by Mr. Barlee in 

 Skye and Shetland, and by Mr. Waller on the north-east 

 coast of Ireland. 



Specimens from Tarbert in Loch Fyne are more or 

 less eroded, and sometimes truncated, owing probably 

 to certain chemical properties or ingredients of the water 



