Mollusca of Great Britain. 363 



saepfe duplici serie macularum insignita, spiraliter can- 

 cellato-striata. Anfractus 5, ventricosi. Apertura or- 

 biculata. Umbilicus foramine obliquo. Operculum soli- 

 dum. 



Long, 0.6. — Diam. 0.4. 



Turbo reflexus. Linn. Syst. Nat. 1. p. 1238 ? 



Nerita elegans. Miill. Verm. 2. p. 177. 



Turbo elegans. Mont.Test.Brit.34>2. t.22.f.7. Maton 



Sc Rackett in Linn. Trans. 8. p. iGj. I>illw. Cat. 2. 



p. 863. 

 Cyclostoma elegans. Drop. Hist, des Moll. p. 32. t.l. 



f. 5 — 8. Lam. Hist, des Anim. sans Vert. 6. p. 148. 



Not uncommon at the roots of fern and in the clefts of 

 limestone rocks near Swansea. 



2. Truncatum. 



Animal pallidum : proboscide elongato. Tentacula brevia, 



pariim acuminata. Sustentaculum breve. Operculum 



fragile, arcuatb striatum. (Drap.) 

 Testa elongato-cylindrica, glabra, fragilis, pallid^ lutescens. 



Anfractus 4, sutur^ distinct^, subcrenata. Apertura 



ovata. Umbilicus vix ullus. 



Long. 0.165.— Diam. 0.065. 



Turbo truncatus. Mo7it. Test. Brit. p. 300. t. 10. /. 7- 

 Cyclostoma truncatulum, j8. et y. Drap. Hist, des Moll. 

 p.4>0.t.l.f.SO,31. 



Of this I found a few specimens mixed with the Cionella 

 Acicula and other land-shells in some fine sand from Wey- 

 mouth-bay, into which they were probably carried down 

 by some freshwater stream. Mr. J. S. Miller showed me 



several 



