544 WORMS. TESTACEA. 82. Nenta. 



Peregrina, Shell ovate, imperforate : whorls round, diftant and equal- 

 ly decreafing: aperture oval. 

 Schraet. Einl. in conch. 2 tab. 4. Jig, 11. 

 Inhabits American Ijlands : half an inch long. 

 »S^// hyaline, fcmetimes teftaceous, opake, with 8 or 9 whorls. 



Danubialis. Shell oblong, imperforate, with diftant ventncofe whorls: 

 aperture orbicular. 

 Marfigl. Danub. 4. tab ^l.Jig. I. 

 Schraet. Jlnfconch. tab, 10. B Jig. 5. 

 Inhabits the Danube: z\ inches long. 



Turbinata, Shell oblong, imperforate, fmooth, pointed: whorls in- 

 flated, the firft much larger, the reft gradually de- 

 creafing: aperture fuboval, margined. 



MarsigL Danub. 4. tab, ^l-fg. 2. 



Schrcet.Jluj conch tab. 10. B.fg. I. 



Inhabits the Danube : 3^- inches long, and lefs ventricofe than 

 the laft. 



Curvata, Shell oblong, curved, fubimperforate, with an oval mar- 

 gined aperture. 

 MarJigl. Danub. 4. tab. $i -Jig. 4. 

 Schrcet. jluf conch, tab. 10. B. fig. 3. 

 Inhabits the Danube : 2\ inches in diameter. 



Exitiu Shell thin, fmooth, white with chefnut bands: fpire ob- 

 tufe, with flattifh whorls. 

 K<zmm,Cab. Rudoljl, tab. 12. fig, 3. 



2, K<emm. Cab. Rud. tab. \Z.fig. 2. 



3, Ktemm. Cab- Rud. tab. 10. fig. 2. 



Inhabits Shell 6-8 lines, 3) an inch long. 



82. NERITA. Anivial a Linrnx: Jliell uni- 

 valve, fpiral ? gibbous, flattilh at bottom: 

 aperture femiorbicular or femilunar : 

 pillar-lip tranfverfety truncate, flattifli. 



Nerite, 



A. Umhilicate. 



Canrena. Shell fmooth, with a flightly pointed fpire, and gibbous 



bifid umbilicus. 



Lifter, tab. 559./, I. tab. 560. f, 3,4, 5. /. 56 1. /. 7. t. 563, 



564 , 566, f, 16, /. 568 ? t, SI 2 -' J* 2 5» 



Bonan, 





