PLATE VI. 



1 jMytiliis Edulis, shewing the beard or byssus. 



2 Teredo Navahs, shewing the shells imbedded in the 



■wood, which they have perforated. 



3 Variety of the Kurex Lotorium, shewing its hairy 



epidermis. 



4 Helix Ampullacea, partially covered with its epi- 



dermis. 



5 ^^iriety of Ostrea Varia, shewing a Serpula adhering 



to it. 



6 Venus Meretrix, shewing the anterior slope. 



7 ArcaGlycymeris, shewing the inside and the hinge. 



8 Cardium Lineatum, shewin x the inside and the hi nge. 



9 Internal view of the Anomia Sella, (in a young state), 



shewing the triangular hinge. 



10 Internal view of the Tellina Virgata, shewing the 



hinge. 



1 1 Internal view of the Spondylus Gaedaropus, shewing 



the hinge. 

 19 Internal view of the Chama Cor, shewing the hinge. 



13 A group of Lepas Tintinnabulum. 



14 A group of Lepas Anatifera, shewing the pedun- 



cles and tentacula. 



II'. .W DorvaU, Printer, 

 ftmberlon Hurt', Hough Sywu. 



