106 



UNIVALVES. TIIOCHUS. 



Imperialis — Imperial Stin. 

 Planus — Flattish. 

 Albidus — White. 

 Fuscatus — Brown spotted. 

 Fasciatus — Banded. 

 Corallinus — Coral. 

 Griseus — Grey. 

 Ferrugineus — Iron. 



Novus — New. 



Fragilis — Thin. 



Callosus — Keeled. 



Afer — African. 



Neritoideus — Reddish colored. 



Perlatus — Pearly. 



* T err estri s — Land. 



*Fuscus — Brown. 



B. — Imperforated, erect; umbilicus closed. 



Vestiarius — Flattened. 

 Labio — Double-lipped. 

 Tuber — Large-mottled. 

 Striatus — Striated. 

 *Conulus — Conical. 

 *Zizyphinus — Livid. 

 Obeliscus — Obelisk. 

 Distortus — Distorted. 

 Virgatus — Rose-striped. 

 Foveolatus — Sugar-loaf. 

 Diaphanus — Pellucid. 

 Iris — Ear-drop. 

 Rostratus — Beaked. 

 Notatus — Marked. 

 ■ Elegans — Elegant. 



Purpureas — Purple. 

 Cookii — Cook's. 

 Nodulosus — Tuberctdated. 

 Mauritianus — Gt. toothed. 

 Fenestratus — Small toothed. 

 Helicinus — Helix. 

 Argyrostomus — Ink-horn. 

 Sinensis — Chinese. 

 Lugubris — Black. 

 Asper — Rough. 

 Tessellatus — Tessellated. 

 Citrinus — Citron. 

 Granatum — Granulated. 

 Crocatus — Saffron tipped. 

 Conchyliophorus — Carrier. 



Melanostoma — Black-mouthed. Pantherinus — Panther. 



Erythroleucos — Red and white. Grandinatus — Studded. 



Punctulatus — Ptmctulated. Inaequalis — Depressed. 



Imbricatus — Scaly. Tigris — Tiger. 



Americanus — American. Pulligo — Brown. 



Caelatus — Turban. *Parvus — Small. 



C. — Tapering, with an exserted pillar, and falling on 



THE side when PLACED UPON THE BASE. 



Telescopium — Telescope. Dolabratus — Zebra. 



