518 BULLIDiE. 



C. STRIGELLA, LoVeil. 



Minute, spirally striolated, subcjlindrical ; crown distinctly 

 perforated. 



Plate CXIV. c. fig. 8. 



Cylichna strigella, Loven, Index Moll. Scandinav. p. 10. — Jeffreys, Ann. Nat. 



Hist. vol. XX. p. IC. — Aluer, Trans. Tyneside Nat. Club, 



1849. 

 Bulla {Cylichna) strigella, A. Adahis, Thesaur. Conch, vol. ii. p. 592, not figure. 

 „ {Atys) ovulata, A. Adaais, Thesaur. Conch, vol. ii. p. 586, pi. 125, f. 118. 



This minute shell so closely resembles nitidula that it 

 will be sufRcient to indicate the differential features, the 

 most striking of which consists in the surface being- regularly 

 striolate, in a spiral direction, with somewhat undulated 

 lines. The crown, which is less conspicuously attenuated 

 than in nitidula, has a distinct but rather narrow perfora- 

 tion. The upper end of the aperture projects slightly 

 above the level of the crown (as in umhilicata), and the 

 general shape is more cylindrical . than in the last-named 

 species, and less conoid than in conulus. 



Although we have retained this shell as a species, it is 

 rather because we cannot disprove its specific individuality, 

 than from a decided conviction of its distinctiveness from 

 either the preceding or succeeding shells. When a larger 

 number of adult individuals have been examined (which 

 the comparative scarcity of specimens forbids at present), 

 certain links will perhaps be then discovered, which may 

 connect not merely the three forms, but even unite them to 

 nitidula. 



It was first taken in Loch Fyne by Mr. Barlee, and has 

 been obtained since in various parts of the Scotch coast. 



