BULLA. 487 



Inhabits 



Shell two inches long, and three-quarters of an inch broad, ob- 

 long, consisting of seven whirls, of which the first occupies 

 three-fourths of the length ; the colour is described to be 

 olive green, but the figures are painted more ochraceous, and 

 the sutures nearly white, with a crenulated appearance. 



dominicensis. 35. Shell sub-cylindrical, longi- 

 tudinally striated and banded; sutures cre- 

 nulated ; pillar sinuated and truncated. 



Bulla Dominicensis. Gmelin, p. 3433. 



Bulla turrita et maculata. Chemnitz, ix. part 2. p. 17- 



t. 117. f. 1011. 

 Bulimus maculatus. Bruguiere Enc. Meth. p. 365. 



Inhabits St. Domingo. Chemnitz. 



This shell resembles B. Voluta, but is somewhat less, and has 

 nine whirls, of which the first occupies rather a smaller pro- 

 portion of the length ; it is of a pale reddish colour, longi- 

 tudinally striated, and the whirls marked with a few distant 

 short brown longitudinal bands j the sutures are crenulated 

 and granulated. 



crassula. 36. Shell ovate, ventricose, rather thick, 

 with the whirls reversed ; spire rather pro- 

 minent. 



Bulla fontinalis, Var. 13. Gmelin, p. 3407. 



Helix, No. 84. Schroeter Einl. i. p. 201. 



Lister Conch, t. 135. f. 35. Petiver Gaz. t. 106. f. 16. 

 Chemnitz, ix. t. 103. f. 879, 880. 

 Inhabits Virginia. Lister. West Indies. Chemnitz. 

 This shell is nearly allied to Bulla fontinalis, but is almost 



twice as large, and differs from that as well as the other three 



following species, in being much thicker, and not brittle or 



pellucid. 



fontinalis. 37. Shell ovate, pellucid, with the 

 whirls reversed ; spire obsolete ; aperture 

 ovate-oblong. 



Bulla fontinalis. Lin. Si/st. Nat. p. 1185. Schroeter Einl. 



i. p. 181. Gmelin, p. 3427. Montagu Test. p. 226. 



Maton and Racket, in Lin. Trans, viii. p. 126. t. 4. f. 1. 



Dorset Cat. p. 43. t. 21. f. 6. 

 Planorbis Bulla. Midler Vermium, ii. p. 167. 

 Bulimus fontinalis. Bruguiere Enc. Meth. p. 306. 



