OP NORTHUMBERLAND AND DURHAM. Gl 



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 tuherculare, Mont. One specimen found on Whitley 

 sands. — J. H. F. Perhaps from the same source as the last. 



Cerithium fuscatum, Brown ( Turho tuherculatus, Penn. Brit. 

 Zool. t. S'2, f. Ill), 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, Brdwn (Illust. Rec. Conch. 2d Ed. 9, 

 t. 5, f. G4), 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 reticulatum. 



56. APORRHAIS, (Da Costa) DUlwyn. 

 1. A. PES-PELECANI, Linn. 



Strombus 2>es-2oelecani, Mont. Test. Brit. 253. 

 From deepish water, not common. 



Family. Muricidje, Fleming. 

 57. PLEUROTOMA, Lamarck. 



1. P. TERES, Forbes. 



Fleurotoma teres, Forbes in Ann. Nat. Hist. xiv. 412, t. 10,f. 3. 

 A specimen of this fine species was got at Whitburn by the 

 Rev. G. C. Abbes, and Mr. R. Howse also dredged a young shell 

 in seventeen fathoms oiF the same place. 



2. P. cosTATA, Penn. 



Murex costatus, Mont. Test. Brit. 255. 



In shell-sand from different parts of the coast, not rare. 



