498 WORMS. TESTACEA. 8o. Turbo. 
Cr yfalinus. Whorls of the fpire ribbed: aperture ovate. 
Inhabits Denmark. Mull. Zool. Dan, prodr. 2929. 
Albulus, Shell imperforate; glabrous, with rounded ftriate whorls. 
O. Fabr. fu. Granl. b. 394. n. 392. : 
Inhabits deeps of the Greenland /eas, among the tranches of 
Sertularie: not zJines long. Shell pellucid, whitifh, fragile, 
longitudinally grooved: whorls 5. 
Annulatus. Whorls with a prominent margined future. 
Inhabits———Gza/t. test. tab. 58. L. 
Shel white, 4 of an inch long, with a fuboval aperture. 
* Bidens: Shell pellucid, with contrary whorls and fubcrenate futures: 
aperture 2-toothed behind. 
Pennant, iv. tab. 81, Lister, t. 41. larger figure. 
Bonan recr. SF Muf. kirch. 3. f. 41. ; 
Gualt. test. tab. 4. D, E. Gizan. adr» 2. t. 3. f: 25 
Stram, A&. Nidrof.:3. tab. 6. 
Schrat, Einl. in conch. 2. tab. 5. f. 12. 
Chemn. conch. 9. tab. 112, f. 960--964. 
Inhabits Europe, at the roots of trees: à an inch long. 
Shell glabrous, brown, with fometimes a mixture of orange: 
avborls 10--12, armed with papilla or very minute white 
teeth at the junctures. 
* Perverfus Shell pellucid, with contrary whorls not crenate: aperture 
3-toothed. á 
Donovan's Brit, fhells, ii. tab. 72. 
Da Costa Brit. conch. 5. 107. t. 5. fi 15s 
Morton Nortbampt. p. 416. tab. 13. f; 1. 
Pennant Brit. Zool. iv. tab. 82. f. 116. 
Lister, tab. 40, 41. Anim, Angl. 2. f. 10, 116 
Gualt. test. tab, 4.C. Arg. conch, 1. 28. f£. 11. 19. 20, 
Argenv. Zoom. tab, 9. f. 13,14. Murray test. te Ve f. 2. 
Chemn, conch. 9. tab. 112. fig. 956--959. ay b. 
2. Chemn. conch. 9. tab. 114. fig. 990. 
3. Lister conch. tab. 20, fig. 16. 
Inhabits among mofs and in old walls of Europe: — $ of an inch 
long. 
Shell brown, thin, glabrous, with about 11 whorls: aperture whites 
Fufaus ^ Shell obtufe, with curved grooves and rt whorls; aperture 
toothlefs. 
Mull. Hist. Verm. 2. p. og. n. 309. 
Inhabits———S%e// about 72 lines long. 
Fifits 
