12 CATALOGUE OF THE MOLLUSCA 



undatum, var. 2 ; Natica Alderi, Montagui ; Velutina 

 Icevigata ; Chiton cinereus ; Nucula nucleus, tenuis ; Leda 

 caudata ; Modiola marmorata, nigra j Cardium fasciatum ; 

 PuUastra virginea ; Astarte compressa ; Psammohia Fero- 

 ensis; Syndosmja prismatica ; Mactra elliptica ; Ne^ra cus- 

 pidata; Corbula gibba; Lyonsia Noevegica; Cyntbia tu- 

 berosa, ampulla; Ascidia sordida ; Molgula arenosa ; Pe- 



LONAIA CORRUGATA, 



Deep Water Region. — Tritonia Hombergii ; Trocbus tumidus ; 

 Fusus antiquus, var. ; Norvegicus, Turtoni, Islandicus, 

 gracilis, var. ; Buccinum undatum, var. 1 ; Natica Gr(en- 

 landica ; Terebratula psittacea ; Modiola nigra; Venus 

 gallina, var. Prideauxiana ; Cyprina Islandica ; Astarte 

 Danmonice ; Panop^a Norvegica. 



Our best thanks are due to those gentlemen who have kindly 

 furnished us with information for the following Catalogue ; more 

 especially to the Rev. Geo. Cooper Abbes, of Cleadon ; to Mr, 

 Wm. Backhouse, of Darlington ; to Mr. Robert Embleton, of 

 Embleton ; and to Mr. Richard Howse. 



