84 OL1VA. 



over the usual zigzag markings, reticulations and sutural fascic- 

 ulations, are two bands of hieroglyphic characters, which are 

 usually well marked. Length, l'5-2'5 inches. 



Beaufort, North Carolina to Florida; 



West Indies; Bahia, Brazil. 



The attenuation of the posterior part of the shell, distin- 

 guishes this from 0. reticularis, with which some of its varieties 

 are nevertheless too closely allied ; the same character and 

 greater size distinguish it from 0. scripta, Lam., which has very 

 similar painting. 0. circinnata, Marr. (fig. 6), is one of the 

 connecting forms referred to above. 0. multiplicata, Reeve 

 (fig. 7), is probably also a synonym. 



O. STAINFORTHII, Reeve. PI. 31, fig. 8. 



White, faintly sprinkled with gray-shaded reddish dots, and 

 marked with a very few blackish blotches disposed in two bands, 

 unspotted next the sutures, columella and interior of aperture 



ivory-white. Length, 1 inch. 



Habitat unknown. 



A very doubtful species, resting solely on the type specimen 

 from which the colors have probably been worn off. 



O. HIEROGLYPHIC A, Reeve. PL 31, fig. 9. 



Ivory-white, encircled by three rows of pale brown hiero- 

 glyphic markings. Length, *6 inch. 



Habitat unknown. 



A doubtful species. 



O. POLITA, Marrat. PL 32, fig. 10. 



Yellowish, with white and chestnut maculations ; pallid viola- 

 ceous within the aperture. Length, 20 mill. 



West Indies. 



Weinkauff thinks that this is perhaps a young 0. litterata, 

 but it appears to me to differ greatly from that species, both in 

 form and markings. I have not seen specimens. It may be a 

 variety of the next species. 



O. FLAMMULATA, Lam. PL 32, fig. 11 ; PL 34, fig. 55. 



Yellowish white, with reticulations and angular markings of 

 chestnut-brown, and occasional white maculations ; interior of 

 aperture whitish or tinged with purple. Length, '9-1'S inches. 



West Africa, Senegal, Cape Blanco. 



