314 PYRAMIDELLID^. 



acute, convex posteriorly, arcuated anteriorly. The co- 

 lumella forms a distinct obtuse angle with the upper por- 

 tion of the inner lip ; although nearly perpendicular it is a 

 little twisted ; the reflection of the pillar lip is very trifling. 

 Fine examples scarcely measure a quarter of an inch in 

 length ; their breadth is four times less. 



In this species the upper edge of each whorl overlaps 

 but slightly the base of the preceding one. 



This elegant little shell has been dredged by Mr. Barlee 

 in Skye, Oban, Loch Fyne, and Guernsey. It must be 

 regarded, at present, as a very rare species. 



E. CLAVLTLA, Loven (?) 



Small, short, little tapering ; whorls plano-convex; suture well 

 marked, the lowest one dividing the ventral surface into two 

 equal parts ; apex very blunt and depressed : axis distinctly 

 perforated. 



Plate XCVIII. fig. 8. 



Turhonillu clavula, Loven, Index Moll. Scandinav. p. 18; Oversiglit Veteiisk. 



Akad. Forhandl. 184(5, p. 49, pi. 1, f. 7. 

 Odostomia „ Jeffreys, Ann. Nat. Hist, (new ser.) vol. ii. p. 34f). 



This rare IJritish shell, which Mr. Jeffreys, after the 

 examination of a typical example of the T. clavula of 

 Loven, has pronounced to be identical with it, agrees 

 fairly enough with the few characters specified in the three 

 lines of its description. Our authority for the name, then, 

 is rather that identification, than any certainty derived from 

 the accordance of the shell with its brief diagnosis. It is 

 of a very short turreted shape, tapers slowly to a very 

 blunt apex, is entirely snow white, polished, quite smooth, 

 and not absolutely opaque. Exclusive of the depressed 

 heterostrophe apical coil there are four-and-a-half or five 

 volutions, which are of moderate or rather slow lonffitu- 



