UNIVALVES— TROCHUS. 147 
Scientific Name. Locality. Common Name. 
Tessellatus ------ St. Croix, Naples ------ Tessellated Troch , 
Turbinatus ------ Mauritius, Mediterranean ‘Turbinated do -- 
Argyrostomus -- New Zealand, Arabia --- Silver-mouth’d do 
Merula -------- China, South Seas ------ Chinese +--+ do «. 
Crassus +--+ +++ + Britain -eoe.-seeeree eee Heavy ---- do-- 
Americanus -:--- America --++++-++++++-- American - do -- 
Famity 3.—With the pillar twisted. 
Mauritianus ----- Mauritius, New Guinea- Great-tooth’d do 
Fenestratus------ Amboyna, Frederick’s Isl. Small-tooth’d do 
Pyramis - +--+ «s+ South Seas, Kast Indies-- Obelisk --- do -- 
Dentatus ------- Red Sea, Guinea ------. Sugar-loaf- do «+ 
Faminy 4.—Shell convex, smooth, with a thick vitreous matter which 
covers the centre of the base, 
Vestiarius --+++-- Mediterranean, Cape of 
Good Hope, India --- Flattened «« do ++ 
Dirviston II.—Shell tapering, with the pillar exserted, and the shell 
falling to one side when placed upon its base. 
Famixy 1.—With pillar twisted. 
Telescopium ---- East Indies ----......+- Telescope - do -- 
Terebellus «+--+. West Indies ---------.. Little augur do -- 
Dolabratus:..--.. 7 Nae onenboDcobood opine Zebra----+- do «» 
Famity 2.—Pillar straight. 
Minute Shells. 
Punctatus -++--+-. Mediterranean ----- see» Dotted ---- do-- 
Striatelustecoccs ston cineres 2 als/elelalajetel slic) Violet lipp’d do -- 
