195 



Mr. LiGHTFOOT fays, in deep ditches of clear water, 

 adhering to the roots of Carices ; and that it was collecled 

 near Uptonchuxch, not far from £i;<3?z, in Buckinghamjliire. 



It is alfo found in the neighbourhood of London, as we 

 have been informed by Mr. Swain son, who favoured us 

 with many fpecimens taken on water plants, in ditches 

 in the marfhes about Rotherhithe, where it is not unfre- 

 quent. 



It appears Doclor Solander was acquainted with this 

 fhell, as he returned it to Mr. Boys by the name of Nau- 

 tilus Segmentinus, previous to the publication of the Mi" 

 nute Shells by Walker ; and of courfe before it was de- 

 fcribed as a Nautilus by Light foot. 



*^ 10. 



Nautilus oblongus carinatus apertura lineari ovali. IValk. Carinatulus. 



Min. Shells, f. 72. 

 Nautilus carinatulus. Turt. Lin. iv. p. 307. 



Adams Microfc. p. 642. t. 14. f. 37. 



N. with an oblong, carinated fliell, with a narrow, 

 oval aperture : colour whitifh, tranfparent like glafs. 



From Sea/alter and Sandzoich : very rare. 



Such is Mr. Walker's defcription; but he does not 

 feem to have well exprelTed it by the figure, if we may 

 judge from a very good drawing we have been favoured 

 with from Mr. Boys. In this the joints are feven, the 

 extreme one, though globofe, is not a quarter the breadth 



Cc 2 of 



