OF NORTHUMBERLAND AND DURHAM. 155 
the shore near Sunderland and Whitburn, by the Rev. G. C. 
Abbes and Mr. Howse, but is supposed to have come from bal- 
last. It has also been found by Miss E. Backhouse at Seaton. 
Cerithium tuberculare, Mont. One specimen found on Whitley 
sands.—J. H. F. Perhaps from the same source as the last. 
Cerithium fuscatum, Brown ( Turbo tuberculatus, Penn. Brit. 
Zool. t. 82, f. 111), is stated by Mr. Pennant to be “ from the 
coast of Northumberland.” We think there must be some mis- 
take in this, or it may be a foreign shell thrown by accident on 
the coast. 
Cerithium cancellatum, Brown (Illust. Rec. Conch. 2d Ed. 9, 
t. 5, f. 64), is also stated to have been found “on the Northum- 
berland coast at Holy Island.” We do not know it, but are 
inclined to think that none of the Cerithia are indigenous to our 
coast. 
The Strombus costatus of Sir C. Sharp’s list is also a Cerithium, 
but it is now generally believed that this shell, common in fo- 
reign collections, has been introduced into the British Fauna by 
mistake. The shell found at Hartlepool was most likely Ceri- 
thium reticulatwm. 
56. APORRHAIS, (Da Costa) Dillwyn. 
1. A. PEs-PELECANI, Linn. 
Strombus pes-pelecant, Mont. Test. Brit. 253. 
From deepish water, not common. 
Famity. Muricipa, Fleming. 
57. PLEUROTOMA, Lamarck. 
1. P. ters, Forbes. 
Pleurotoma teres, Forbes in Ann. Nat. Hist. xiv. 412, t.10,f. 3. 
A specimen of this fine species was got at Whitburn by the 
Rey. G. C. Abbes, and Mr. R. Howse also dredged a young shell 
in seventeen fathoms off the same place. 
2. P. costata, Penn. 
Murex costatus, Mont. Test. Brit. 255. 
In shell-sand from different parts of the coast, not rare. 
