494 



WORMS. TESTACEA. So. Turbo, 



^//generally white, ibmetimes mixed with brown, or marked 

 with tranlverfe interrupted ferruginous ring^, fometirnes 

 marked with dots or lines : <whorls with \z — 16 ribs. From 

 this fhell was procured the violet dye of tfae ancients. 



• Tuber. 



culatus. 



Shell duflcy with 12 finely tuberculate whorls. 

 On the Northumberland coaft. Pennant, tab. 82. fig. * 



II I. 



Atnbiguut, Shell tapering perforated, with contiguous fmooth ribbed 

 whorls. 

 Inhabits the Mediterranean, and very much refembles T. clathrus, 

 except in being perforated : --whorls pale with 2 or 3 ferrugi- 

 nous lines; the ribs twice as many as in T. clathrus. 



Crenatuj, Shell taper fubcancellate, with contiguous ribbed whorls 

 crenate above. 



Inhabits Muf. Lud,ulr. 659.^. 353. refembles T. clathrus. 



Shell white, nearly an inch long; fpire with 8 whorls, the ribs 

 rounded and in fome places obiolete. 



Lailem* Shell taper, with crowded longitudinal raifed ftriae. 

 Inhabits the Mediterranean. Oman. ad*-, tab. 6. fig. 55, 

 Shell lize of a barley-corn, fnovv^ ; the itrix not membranaceous. 



Striatums, Shell fubcancellate taper, with contiguous whorls and in- 

 terrupted varicofe belts. 



Inhabits the Mediterranean : fize of a barley-corn. 



Shell white, the whorls furrounded with fmall membranaceous 

 ftriae, and convex callous wrinkles: aperture obovate; beneath 

 fubangular, 



l/va. Shell ovate obtufe, with contiguouous whorls and imbricate 



longitudinal ftriae. 

 Lister tab. $$%.fg. 47 — 49. Pet. Gaz. t. 27 f. 2. 

 Bovan recr. and Muf % kirch. 3 fig. 14O. 

 Gualt. test. tab. 58. D. Seba muf. 3. tab. $5 'fig- 2l * 

 Knorr Vergn, 6. tab. 25. fig. 4 

 Born Muf. Ctej. Find. test. p. 340. <vign. fig. 2. 

 Martini conch. 4. tab. 153. fig, 1439. a, b. 



2, Chemn. conch. 9, tab. U3.fg.9i?' Jf* £**-~*^> 



3. Lister tab. 40. Chemn. 9. tab. II 2. fig. 956. 

 Inhabits South America: i£ inch long. 

 Shell white cinereous or chefnut, umbilicate, with about 12 



whorls, the firft thrice as large as the next, the intermediate 

 grooves with equal ftriae; aperture 1 -toothed. 



Cernsutl 



