UNIVALVES. TROCHUS. 117 



Melanastomus Black-throated. Purpurascens Purple. 



*Stnatus Striated. Imbricatus Imbricated. 



*Minutus Crimson-tip. Caelatus Scaly. 



Punctulatus Rose-colour' d. Gibberosus Olive-green. 



Conulus Conical. Virgatus Rose-striped. 



*Zizyphinus Livid. Cookii Cook's. 



*Papillosus Granulated. Iris Iris. 



Undatus Undulated. Elegans Elegant. 



Granatum Tiger. Notatus Marked. 



Virgineus Ringed. *Ziczac Ziczag. 



Diaphanus Thin. Obtusus Blunt. > 



Selectus Red- and-white. Crocatus Saffron-colour' d. 

 Hortensis Garden. 



FAMILY 2. With the pillar toothed. 

 Labeo Double-lipp'd. Turbinatus Turbinated. 



Asper Rugged. Argyrostomus Silver-mouth' d. 



Quadricarinatus Four-keeled. Merula Chinese. 

 Tessellatus Tessellated. *Crassus Heavy. 



Americanus American. 



FAMILY 3. With the pillar twisted. 

 Mauritianus Great-tooth' d. Pyramis Obelisk. 

 Fenestratus Small-tooth' d. Dentatus Sugar-loaf. 



FAMILY 4. Shell convex, smooth, with a thick vitreous matter 



[which covers the centre of the base. 



Vestiarius Flattened. 



DIVISION III. SHELL TAPERING, WITH THE PILLAR EXSEKT- 



ED, AND THE SHELL FALLING TO ONE SIDE WHEN 

 PLACED UPON ITS BASE. 



FAMILY 1. With pillar twisted. 



Telescopium Telescope. Terebellus Little-augur. 



Dolabratus Zebra. 



FAMILY 2. Pillar straight. 



Minute Shells. 

 Punctatus Dotted. Striatellus Violet-lip^ d. 



