/^ 



Mollusca of Great Britain. . 327 



Plentifully towards the end of autumn at the roots of the 

 ^osa spinosissima, on the Swansea Burrows. 



3. Depressa. 



Animal 



Testa depressa, lentissim^ et irregulariter rugosa, albida. 

 Anfractus 2, vix 3. Apertura lunata. 

 Long. 0.065.— Diam. 0.145. 

 As yet I have only found two dead specimens from 

 Britonferry wood near Swansea. In its general contour 

 this more nearly resembles the true Helices than any of tlie 

 preceding ones. It is whitish, and has not much of the 

 pellucidity and glossiness characteristic of its genus. The 

 last volution is not so proportionally large and swollen, 

 and the spire is in consequence more central. 



4. Elongata. 



Animal elongatum, peramplum. Tentacula brevia, fere 



conica. 

 Testa globosa, spir^ prominula, alba. Anfractus vix 2. 

 Apertura ovato-lunata. 



Long. 0.085.— Diam. 0.15. 

 Vitrina elongata. Drap. Hist, des Moll. p. 102. t. 8. 

 /. 40. 



From Britonferry wood, near Swansea; very rare. Ex- 

 cept in the fewer volutions and less orbicular form, (cha- 

 racters which do not alter with the growth of the shell,) T 

 should have been inclined to consider this as the young of 

 the V. Miilkri. 



Draparnaud's representation of this shell is very incor- 

 rect, and by no means agrees with his description. Nor 

 has he better succeeded in his figures of the V. diaphana, 

 VOL. XVI. 2 u judging 



