1 16 UNIVALVES. TROCHUS. 



*Obliquatus UmUlicated. Solaris Sun. 



Cinerarias A shy- colour' d. Inermis Short-spined. 



Neritoideus Reddish-colour 1 d. Imperialis Imperial. 



Albidus White. Conchyliophorus Carrier. 



Vittatus Ribbon. Tectum Arch-lipp'd. 



Divaricatus Divaricated. Pumilio Dwarf. 



Fuscatus Brown. *Terrestris Land. 



Umbilicaris Obliquely-rayed. Bidens Double-tooth'' d. 



Cinereus Cinereous. Fragilis Brittle. 



Fasciatus Banded. Carinatus Keeled. 



Planus Flat. Flumineus River. 



FAMILY 2. With pillar toothed or plaited, and umbilicus 



smooth. 



Maculatus Spotted. Cruciatus Cross-rayed. 



Alveare Bee-hive. Modulus Keel-whirVd. 



Tentorium Pavilion. Declivis Egyptian. 



Agrestis Rustic. Viridulus Necklace-grained. 



Niger Black. Perlatus Pearly. 



FAMILY 3. With pillar smooth, and umbilicus toothed or cre- 



Cylindraceus Sub-conical. Carneus Flesh-colour' d. 



Areola Red square-spotted. 



FAMILY 4. With pillar and umbilicus crenated. 

 Pharaonis Strawberry. Guineensis Guinea. 



Corallinus Coral-bead. Urbanus Purple-striped. 



FAMILY 5. Shell depressed, with the umbilicus large, pervious, 



and crenated, in which the course of the whirls is strongly 

 marked. 



Perspectivus Staircase. Hybridus Mongrel. 



Perspectivunculus Small-do. Stramineus Straw-colour' d. 



Infundibuliformis Funnel- Indicus Indian, 

 formed. 



DIVISION II. SHELL IMPERFORATE, ERECT. 



FAMILY 1. With the pillar smooth. 

 Grandinatus Studded. Tuber Large-mottled. 



