HELIX. 935 



his figure to be about fourteen lines long, and nine broad, of 

 a brownish white colour tinged with green, especially towards 

 the summit. 



OTAHEiTANA. 111. Shell umbilicated, oblorig-ovatc, 

 thick, with the whirls reversed, and the outer 

 lip emarginated and white. 



Helix perversa, in rivulis Insulas Australis Otaheite reperta. 



Chemnitz, ix. part 1. p. 108. t. 112. f. 950 and Qol. 

 Helix perversa, Var. e. Gmelin, p. 3643. 

 Bulimus Olaheitauus. Bruguiere Enc. Meth. p. 347. 



Inhabits rivers in Otaheite. Chemnitz. 



Shell about eleven lines long, and six broad, with five reversed 

 whirls, of an uniform brown or coffee-colour ; the inner lip 

 has a tooth-like callosity in the middle, and the shell may 

 probably belong to the same natural family as Foluta Auris 

 Midcs, or Volutafasciata, which it most resembles. 



L^VA. 112. Shell umbilicated, oblong, diapha- 

 nous, with the whirls reversed, and trans- 

 versely banded; aperture elongated at the 

 base. 



Helix laeva. Midler Verm. ii. p. 95. Chemnitz, ix. part 



1 . p. 103. 1. 1 1 1 . f. 940 to 949. Gmelin, p. 3644. 

 Bulimus laevus. Brnguiere Enc. Meth. p. 3 J 7. 

 Bulla, No. 22. Schroeter Einl. i. p. 194. 

 Lister Conch, t. 33. f. 31. Knorr, vi. t. 29. f. 3. Favanne, 

 t. 65. f. A 3. 



Inhabits the East Indies. Chemnitz. 



Shell about sixteen lines long and seven broad ; it is more ob- 

 long and pellucid, and more produced, but less angulated at 

 the base than H. interrvpta, and differs from all the follow- 

 ing species in having the umbilicus less covered by the re- 

 flected pillar-lip. Bruguiere has enumerated the following 

 Varieties : A. White, with two bluish or blackish brown 

 transverse bands; B. White, with three brown or bluish 

 bands; C. White, with six brown bandsj which appear of a 

 darker colour within the aperture than (U the outside; D. 

 Yellowish white, with five bands, of which the three larger 

 are bluish and the others reddish ; E. Yellow, with five 

 bluish broad bands and a narrower red one at the .sutures ; 

 F. Yellow, with three broad purple bands; G, Variegated 

 with greenish, yellow, and reddish spots, and green bands. 

 S A 2 



