188 



This is a moft elegant fpecies, when examined under a 

 microfcope ; both fides are uniform ; the aperture equal, 

 and perfectly lateral. 



It is not uncommon, with thetwolaft, at Sandwich, and 

 Sheppey ifland : we have found it alfo at Teignmouth and 

 Salcomb, in DevonJJiire, particularly on Oyjlers, and with 

 the two preceding fpecies, lodged in the byjfus of the 

 Pinna ingens. Are equally abundant on the fhores of 

 Weymouth and Swanage, in Dorfeljliire, and on other 

 parts of that coaft : have received it alfo from the fouth 

 coaft of Wales, 



4. 

 LiEVIGATULUS. Nautilus fplralis geniculis laevibus. Walk. Mm. Shells, f. 67. 



Nautilus laevigatulus. Turt. Lin. iv. p. 306. — Gualt. t 19. B ? 



Adams Microjc. p. 641. t. 14. f. 32. 

 Martini Conch, i. t. 19. t. 16S ? 



N. fpiral, with fmooth joints ; colour femi-pellucid, 

 white, and gloffy. 



To this very concife defcription Mr. Walker adds, 

 that it is found at Sandwich and Seafalter, but not 

 common. 



We mufl; confefs this fliell appears to be in great obfcu- 

 rity, at leall nothing like the figure, or defcription, has 

 come under our examination. In a drawing we received 

 from Mr. Boys, with a reference to this fliell of Walker, 



and 



