ATJRICITLrD^:. 55 



margin of the peristome furnished within with an oblique den- 

 tiferous callus, which usually appears externally. 



Pythia, Bolten, 1798, Mm. p. 105. ed. 2. p. 74 



Link, Host. Samml. iii. p. 139. 



Schumacher, Essai, p. 229. 



March, Cat. Yokl p. 37. 



Herrmannsen, Ind. Gen. Malac. Suppl. p. 117. 



Pfeiffer in Zeitschr. f. Malak. 1853, p. 9; Malak. Bl. 1854, 

 p. 149 ; Mon. Auric, p. 73. 



H. and A. Adams, Gen. rec. Moll. ii. p. 239. 

 Poly don ta, Fischer de Waldh. 1807, Mus. Demid. iii. 



Beck, Ind. p. 101. 



Woodic. Man. Moll. ii. p. 173. 

 Scarabus, Montf. 1810, Conch. Syst. ii. p. 306. 



Cuvier in Ann. Mus. xix. ; Reqne Animal, 1817, ii. p. 107 ; 

 k et ed. 2. 1830, et ed. Voiyt, iii. p. 108. 



Leach, Zool. Misc. i. p. 95 ; ed. Cfienu, p. 10. 



Ferussac, Prodr. p. 100, et Tabl. Syst. p. xxxiii. 



Blainville, Malac. p. 453, et Diet. Sc. Nat. xlviii. p. 30. 



Menhe, Synops. p. 19. ed. ult. p. 35. 



Rang, Manuel, p. 174. 



Deshaues in Fnci/cl. Meth. iii. p. 934. 



Troschelin Wiegm. Arch. f. Nat. 1838, i. p. 202. 



Anton, Verzeichn. p. 47. 



Soicerby,jun., Conch. Man. p. 95. ed. 2. p. 253. 



Swainson, 3Ialac. p. 344. 



D'Orbigny, Moll. Cub. i. p. 137. 



Reeve, Conch. Syst. ii. p. 107, et Ann. fy Mag. N. H. ix. p. 218. 



G-ray in St/n. Cant. Br. Mus. 1842, p. 91, et in Proc. Z. S. 

 1847, p.' 179. 



Kilster in Cliemn. ed. nov. i. 16 ; Auric, p. 7. 



Callow, Conch. Nomencl. p. 179. 



A. Adams in Proc. Zool. Soc. 1850, p. 147, et in Ann. $ May. 

 N. H. ser. 2. viii. p. 66. 

 Strigula, Perry, 1811, Conch, t. 15. 

 Scarabnea, Oken, 1817, Isis, p. 1169. 



Schrceiyy. Natury. p. 742. 

 Scarab;eus, Blaine. 1821, in Journ. Phi/s. xciii. p. 304 

 Polyodonta, Feruss. 1829, Bull xix. p.' 328.^ 



' Ilerrmannsen, 1848, Ind. Gen. Malac. ii. p. 318. 

 Helix, sp., Linn. 

 Bulimus, sp., Bray. 

 Auricula, sp., Lam. 



This genus is very distinct from every other by the characters 

 of the shell, and therefore the well-known Helix Scarabcsus has 



