356 WORMS. TESTACEA. 74. Bulla. 
Gualt. teft. tab. 45,B. Argenv. conch. 1, t, 10, E. 
Bonan. Muf. Kirch. 3. fig. 190. 
Seba muf. 3. tab. 71, fig. 7—10. 
Muf. Gottwald. tab. 33. fig. 220. 
Chem. conch. 9g. tab. 118. fig. 1012, 1015. 
3. Fulvous or white with a crimfon pillar. 
4. White with crowded bands and pale pillar. 
Argenv. conth, 1. app. 2. L.. 
Inhabits the American Ocean: 8 inches long. » 
Shell generally whitifh with longitudinal undulate brown or 
blueifh itripes. : 
Thefe 2 laft fpecies approach in their fhap¢ to the genus Helix. 
Hyalina. Shell oblong, horn-colour, with a retufe fpire. 
Muf. Gottwald. tab. 8, fig. 20? ay 
Martini conch. 1. tab, 21, fig. 199. 
Inhabits - Shellthin, hardly 2 an inch long. 
Ovatas Shell fubovate, flightly 2-beaked, ftriate on the back and 
| gibbous in the middle, chefnut with white fpots and 
bands, within violet. CORN ak 
Bonan. recr. &F Muf. kirch. 5. fig. 262. 
Martini conch. 1. tab. 22, fig. 207, 208. 
Inhabite refembles B. ovum, but is fmoother and more ob- 
- long, and the upper-lip not fo diftin&tly toothed. 
Ferruginofa Shell fubovate, equable, pale grey undulate with brown 
WA and marked with ferruginous fpots and 2 white bands, 
Martini conch. 1. tab. 22, fig. 209. 
2. Muf. Gottwald, tab. 8, fig. 53? 
3. Knorr Vergn. 5$. tab. 28. fig. Y» 
Inhabits 17 inch long: refembles B, ovata, 
Velum: Shell extremely thin and umbilicate each fide, white with 
capillary brown lines and a fnowy band edged with 
brown each fide. s 
Martin. neuft. mannig. 1. tab. 1, fig. 10, 11. 
Chemn. conch. 10. tab. 146. fig. 1348, 1349. 
2. Born. Muf. Caf. Vind. tell. tab. 9, f. V. 
* Inhabits Shell above an inch long. 
Vefica, Shell ovate-oblong varied with cinereous, within milk- 
white, folid, pellucid; aperture wide: back with 2 
grooves. 
Botan. reer. 3. fig. 332. Muf. kirch, 3. fig. 330. 
Klein oftr. tab. 9. fig. 96. 
Inhabits Zraf : refembles B. ampulla. 
; Cylin- 
