50 Mr. A. Bell on the Fauna of the Upper Tertiaries. 



riety is exceedingly well preserved, as, indeed, it is in all 

 the species into which red or purple enters as part of the 

 colouring. Pecten polymorphuSj Phasianella, Pleurotoma 

 IcBvigataj and some of the TrocM may serve for examples. 

 Hydrobia ulvce, Penn., and var. suhurnhilicata, Mont. 

 [Assiminea Grayana, Leach (?). On the authority of Mr. 

 Sowerby. I have not seen it.) 

 ■f^Rissoa chnex, L. (moderately common). Ranges from 

 South Spain to the ^gean Sea. 



cosiata, Adams. 



* costulata, Alder. 



* lactea, Michaud. Nearest habitat, Channel Islands. 



" Our rarest i?/ssoa," Jeffr. 



membranacea^ Adams. 



* , var. venusta, Phil. 



* , var. data, Phil. 



parva, Da Costa, and var. tnterrupta, Adams. 



* punctura, Mont. (Jefireys). 



striata, Adams. 



striatula, Mont. There are but two other localities 



in Britain recorded for this exquisite shell, — Largs and 

 Lochgilphead. 



Turritella terehra, L. (non Lam.) = T. communis, Risso. 



Scalaria communis, Lam. (very rare). 

 *Ach's unica, Mont. 



Odostomia acuta, Jeffr. 



conoidea, Broc. 



pallida, Mont. 



plicata, Mont. 



* {Chemnitzia) lactea, L. Is also a Belfast fossil. 



( ) indistincta, Mont. 



* ( ) suturalis, Phil. 



*-;— ( ) rufa, Phil. 



Katica catena. Da Costa. 



Alden, E. F. 



*Adeorhis suhcarinaius, Mont. Is also an Irish fossil. 



Cerithium reficulatum. Da Costa. 



Purpura lapillus, L. 



Buccinum laidatum, L. 



Nassa incrassata, Strom. 



reticulata, L. 



* nitida, Jeffr, 



Murex erinaceus, L. 

 '^Lachesis minima, Mont. Much larger than the recent 



British forms. 

 * Defrancia retiadata, Renier. 



