876 TURBO. 



Turbo labiatus. Montagu Test, p. 362. t. 1 1 . f. 6. Ma- 



ton and Racket, in Lin. Trans, viii. p. 180. Dorset 



Cat. p. 51. t. 21. f. 15. 

 Turbo tridens. ChemnitZj ix. part 1. p. 115. t. 112. f. 



957.? 

 Tuibo perversus, Var. e. Gmelin, p. 36lO. ? 

 Strom biforrais perversus. Da Costa Brit. Conch, p. 107. 



t. 5. f. 15. 

 Bulimus perversus. Briiguiere Eric. Meth. p. 351.? 

 Inhabits the neighbourhood of London ; and is very rare. 



Montagu. 

 Shell about five-eighths of an inch long, and one-eighth broad, 

 of a pale brown colour, and is distinguished by a broad 

 thick marginated white aperture. 



PERVERSUS. 147. Shell turreted, pellucid, with the 

 whirls reversed, and the aperture toothless. 



Turbo perversus. Linnceus Syst. Nat. p. 1240. Chemnitz, 



ix. part 1. p. II 6. t. 112. f. 959 a. Montagu Test. p. 



S55. 1. 11. f. 12. Maton and Racket, in Lin. Trans. 



viii. p. 181. t. 5. f. 2. Dorset Cat. p. 51. 1. 19. f. H. 

 Lister Anim. Ang. t. 2. f. 11. Schroeter Erdconch. t. 1. 



f. 5. Favanne, t. Q5. f. E 4. 

 Inhabits moss on the trunks of trees, in Wiltshire, Dorsetshire, 

 Devonshire, and Cornwall ; but is not common. Maton and 

 Racket. 

 Shell about a quarter of an inch long, and one-fourth as broad, 

 pellucid, yellowish, and obsoletely striated, with the summit 

 rather obtuse, and the whirls separated by a deep suture ; in 

 old shells a round obsolete tooth is sometimes observable, 

 but the aperture is generally toothless. Gmelin's description 

 answers best to T. laminatiis, but in his references, as well 

 as in Schroeter's, those belonging to T. nigricans and to 

 the present species are mixed indiscriminately. Muller, in 

 the Zoologia Danica, t. 102, has figured a shell which is 

 more like T. labiatus, but has not any teeth. Bruguiere has 

 probably confounded this species, with T. nigricans and 1\ 

 labiatus, under the name of Bulimus perversus. 



QuiNQUEDENTATUS. 148. Shell tuiTcted, slightly 

 striated longitudinally, and of a greyish white 

 colour : aperture ovate with five teeth. 



Turbo quinquedentatus. Bor7i Mus. p. 378. t. 13. f. 9. 

 Gmelin, p. 3612. Olivi AdriaticUf p. 171. 



