r> 



62 



the cabinets of Mr. Swainson and Mr. Sowerby, in 

 London; by whom we are informed, it was not uncom- 

 mon in the neighbourhood of the metropolis, efpecially 

 • in Hyde Park. 



70. 

 Labi AT A. Strombif. perverfus. T>a Cojla. p. 107. t. 5.f. 15. 



Tab. 11. f. 6. Chem. Conch, ix. t. 112. f. 957 ? 



T. with nine reverfed, taper fpires, of an opaque, 

 light-brown colour, wrought with numerous, ftrong, 

 and regular ftrije, the whole length of the fhell : the vo- 

 lutions are flat, feparated only by a fine obfolete line, 

 which does not interrupt the longitudinal ftrise : aper- 

 ture fub-orbicular, with tijinus at the upper end, and fur- 

 niflied with two teeth-like lamince on the inner lip ; mar- 

 gin much reflefted, very broad, thick, and white, fur- 

 rounding the mouth ; pillar lip a little detached from 

 the body whirl. Length five-eighths of an inch ; breadth 

 one eighth. 



This fpecies cannot be confounded with any of the 

 preceding ketero/lrophe fhells, for independent of the un- 

 fually flat volutions, the broad, thick, marginated aper- 

 ture, is an unerring mark of difl:inftion. 



Da Costa feems to have known this rare fpecies, 

 having given a good defcription of it, as an old fliell of 

 his Sirombiformts perverfus ; where he not only makes 

 mention of the volutions, not jutting out beyond each 



other. 



