PLATE VI. 



Fig. 



1 Mytilus Edulis, shewing the beard or byssus. 



2 Teredo Navalis, shewing the shells imbedded in the 



wood, which they have perforated. 



3 Variety of the Murex Lotorium, shewing its hairy 



epidermis. 



4 Helix Ampullacea, partially covered with its epider- 



mis. 



5 Variety of Ostrea Varia, shewing a Serpula adhering 



to it. 



6 Venus Meretrix, shewing the anterior slope. 



7 Area Glycymeris, shewing the inside and the hinge. 



8 Cardium Lineatum, shewing the inside and the hinge. 



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. 



11 Internal view of the Spondylus Gsedaropus shewing 



the hinge. 



12 Internal view of the Chama Cordata, shewing the 



hinge. 



13 A group of Lepas Tintinnabulum. 



14 A group of Lepas Anatifera, shewing the peduncles 



and tentacula. 



LONDON: 



w. m'dowall, printer, pemberton row, 



GOUGH square. 



