HELIX. 919 



Helix glauca. Linnaus St/st. Nat. p. 1245. Born Mus. 

 p. 377. Kammerer Cab. Rud. p. 185. Schroeter Einl. 

 ii. p. 145. Gmelin, ]p. 362S. 

 Helix effusa. Chemnitz, ix. part 2. p. 1 18. 1. 129. f. 1 144 



aud 1145. 

 Helix ampullacea, Var. y. Gmelin, p. 3626. 

 Helix Oculus communis. Gmelin, p. 3621. 

 Helix, No. J 82. Schroeter Einl. ii. p. 226 and No. 82. 



p. 201. 

 Nerita effusa. Muller Verm. ii. p. 175. ^Schroeter Fluss. 



p. 255. 

 Bulimus effusus. Bruguiere Enc. Meth. p. 296. 

 Liniax vittatus. Marti/n Univ. Conch, iii. t. 1 18. 

 Lister Conch, t. 129. f- 29. Seha, iii. t. 40. f. 3 to 5. 

 Knorr, v. t. 5. f. 3. Geve, iii. t. 3. f. 20. Martini Na- 

 turf. ii. t.79- f. 1- 

 Inhabits rivers in Guadaloupe. Bruguiere. West Indies. 



Mart?/n. 

 Shell commonly about an inch long, and an inch and a half 

 broad, but is sometimes, though rarely, almost twice as 

 large ; the colour is whitish or pale greyish brown, with 

 from two to twelve transverse brown bands on the body- 

 whirl, and the inside is of a bright orange colour ; the aper- 

 ture is oval and effuse, and the umbilicus remarkably large. 

 Linnaeus has described H. glauca ' labro marginato,' but 

 the present shell answers so well in other respects to his de- 

 scription, that I have no hesitation in considering it the same. 

 Meuschen, in the Museum Geversianum, p. 256, No. l69, 

 erroneously asserts that the Linnaean H. ampullacea and 

 II. glauca are the same species. 



viTREA. 74. Shell sub-iimbilicated, ovate, ventri- 

 cose, smooth, with the whirls of the spire 

 keeled in the middle. 



Helix vitrea. Born Mus. p. 383. t. 15. f. 15 and 16. 

 Gmelin, ]p. 36Q2. Chemnitz, xi. p. 282. t. 210. f.2072 

 and 2073. 

 Helix, No. 204. Schroeter Einl. ii. p. 234. 

 Bulimus vitreus. Bruguiere Enc. Meth. p. 282. 



Inhabits 



Shell twenty-two lines long and eighteen broad, sub-pellucid, 

 brittle, of a yellowish brown colour, with longitudinal undu- 

 lated sulphur-coloured bands ; it has five whirls, of which 

 the body-whirl is ventricose, and those of the spire trans- 

 z 2 



