248 OVULA. 



O. BBEVIS, Sowb. PI. 2, figs. 32, 33. ' 



Thin, globosely inflated, whitish or purplish white, columella 

 plicate in front, with a callous ridge behind, and a connecting 

 longitudinal deposit. Length, 12 mill. 



Australia. 



The figures given by Reeve and Weinkauff do not represent 

 this species, but 0. marginata. 



The shell is somewhat closely related to 0. margarifn. Sowb. 



0. MARGARITA, Sowb. PI. 2, figs. 34-40. 



White, extremities somewhat beaked. Length, 10-13 mill. 



Singapore, Japan, Philippines, Australia. 



Less inflated, narrower, with more beaked extremities than 

 0. breuix. 0. bulla, Ad. and Reeve (figs. 30, 37), is a little 

 heavier form, and 0. umbilicata, Sowb. (figs. 38, 39), appears 

 to be not quite adult; they do not seem to have an}' really dis- 

 tinctive characters. 0. ovoidea, H. Ad. (fig. 40 , from the Red 

 Sea, is only known by a short description and a figure of the 

 base of the shell ; I do not find distinctive characters in either. 



0. BIMACULATA, A. Ad. PL 2, figs. 46, 47. 



Livid white, obsoletely three- banded, back transversely 

 striate, extremities of aperture stained with red within. 



Length, 13 mill. 



New Caledonia. 

 0. CARNEA, Poiret PI. 2, figs. 48-52. 



Yellowish, reddish or violet flesh-color, transversely striated, 

 with frequently several angles or planes on the back, extremities 

 beaked, somewhat produced, lip thick-margined, finely dentate, 

 columella excavated below, with a callous ridge above, extremi- 

 ties of aperture often pink-tinged. Length, 12-15 mill. 



Mediterranean Sea. 



0. lactea and 0. triticeM, Costa, are synonyms; 0. triticea, 

 Lam., remains a somewhat doubtful species, the figures ijiven by 

 Kiener and Sowerby resembling <>. r/iodia, Ads., whilst those 

 of Reeve (figs. 51, 52) and Kiister are like cunn-n. Keeve's figuiv 

 of 0. carnea looks more like 0. rlnxliti. The locality of <>. 

 triticea is supposed to be West Coast of Africa. Dunker iden- 

 tifies a Japanese shell with it, but he has used Sowerby 's figures 

 for comparison. 0. lepida, Dillw., is a synonym of triticea. 





