936 HELIX. 



#*** Imperforate^ and the Whirls rounded. 



AUREA. 113, Shell sub-umbilicated, ovate-oblongv 

 obtuse, smooth, yellow, with the outer lip 

 white and marginated. 



Helix dextra. Muller Vermium, ii. p. 89. Chemnitz, ix. 



part 2. p. 153. 1. 134. f. 1210 to 1212. Gmelin, p. 



3643. 

 Bulimiis citrinus, Var. D. Bruguiere Enc. Meth. p. 314. 

 Variety. With the whirls reversed. 

 Helix perversa. Linnaus Syst. Nat. p. 1246. Born Mm. 



p. 381. Schroeter Fluss. p. 294. t. 10 A. f. 2 and 3, 



and Einl. ii. p. 153. t. 4. f. 4. Chemnitz, ix. part 1. p. 



95. t. 110. f. 928 to 933, and t. 111. f. 934 to 937. 



Gmelin, p. 3642. 

 Helix sinistra. Muller Verm. ii. p. 90. 

 Bulimus citrinus. Bruguiere Enc. Meth p. 313. 

 Limax aureus. Martyn Univ. Conch, iii. t. 115. 

 Lister Conch, t. 34. f 33, and t. 35. f. 34. Gualter, t. 5. 



f. P. Jrgenville, t. 9. f. G. Seba, iii. t. 40. f. 37. 



Knorr, i. t. l6. f. 5, iv. t. 28. f. 4 and 5, and v. t. 23. f. 



4. Martini Berl. Mag. iii. t. 5. f. 50. Favanne, t. 65, 



f. A 8. 

 Inhabits the West Indian Islands, and the forests of Cayenne 

 and Guinea. Bruguiere. Pulo Condore, Prince's Island, 

 and China. Humphreys. 

 Shell about an inch and three-quarters long, and half as broad, 

 and has six or seven whirls, of which the body-whirl is some- 

 what ventricose, and the spire conical, but ending in an ob- 

 tuse summit ; the whirls are most commonly reversed, but 

 this cannot be considered the natural state, and between H, 

 dextra and H. sinistra of Muller, there is no other differ- 

 ence : young shells are slightly umbilicated, but with age the 

 umbilicus becomes closed by the pillar-lip ; it varies much 

 in the markings, but yellow is the prevailing colour, and the 

 following are some of the leading Varieties : A. Pale or 

 darker yellow, without spots ; B. Yellow, with one or two 

 reddish or blackish longitudinal stripes ; C. Yellow, with 

 grey clouds and bands ; D. Green, with two or three yellow 

 transverse bands. Muller also mentions two other Varieties, 

 of which one has red, and the other party-coloured spots, 

 but 1 suspect that these belong to the following species. 

 Linnaeus erroneously considered it to be a river shell. 



