XIX 



1 Blainville's Otion. i Eared Cineras. 3 Cornucopia PolUdpes. 4 Common 

 Scalpellum. 5 Smooth Anatifa. 6 Crenaied Pyrgoma. 7 Warted Crensia. 8 

 Montagus Acasta 9 Operculum of Do. 10 White Balanm. 11 Opercidum of 

 Do. 12 Crown Coronula. 13 TFAa?€ Tubicinella. 14 Fen7?zcw?ar Serpula 15 

 Nautilm-sluxped Spirorbis. 16 Recumbent Galeolaria. 17 Antiquated Magilus. 

 18 Triangular Vermilia. 19 i^an Amphitrite. 20 ^e/g'tc Pectinaria. 21 ,Sf/jc//y 

 Terebella. 22 Thickest Sabellaria. 23 Zarg^e Comuoides. 24 Snake-like Sili- 

 quaria. 25 Trochi-fonned Brochus. 26 7\)0</i Dentalium. 27 Elepfiantine. 28 

 English Adna. 



4 



