OLIVA. T5 



and fasciole spotted or streaked with chocolate or violet ; interior 

 of aperture orange-red. Length, 1 ■5-2*25 inches. 



Indian Ocean, China, Philippines, Polynesia, 3fadagascar, Zanzibar. 



0. cruenta, Sol., and 0. emicator^ Meusch., have priority over 

 0. guttata^ but the latter name is so well known that it seems 

 inadvisable to change it. 0. mantichora, Duel. (fig. 6*1), is a 

 monstrous condition of this species, not uncommon among 

 Olives. 



O. RUFULA, Duclos. PI. 20, fig. 19. 



Fawn-colored, crossed diagonally or transversely by dark 



chestnut bands formed by the coalescence of trigonal markings ; 



aperture white within. Length, 1 inch. 



Philippines, Moluccas. 



0. INFLATA, Lam. PL 19, figs. 68-10 ; PI. 20, figs. 11-16. 



Shell swollen, becoming gibbous in the middle in old specimens, 

 the spire partially sunken below the edge of the body-whorl, the 

 latter produced behind, with a heavy callous deposit ; outer lip 

 sometimes enormously thickened ; fasciole with a heav}^ callous 

 ridge, independent of the columellar plaits ; color white or 

 yellowish, more or less dotted, blotched or banded, or lightning- 

 streaked with brown-orange, chestnut, chocolate or bluish ash, 

 sometimes variegated with two or three colors at once, sometimes 

 almost or entirely covered with dark color, occasionally pure 

 white; aperture white within. Length, 1-5-2 inches. 



Eed Sea; Geylon ; E. Africa; Madagascar ; Seychelles. 



The variability of this species in coloring is exceedingly great. 

 When old, the best characters are derived from the inflated form, 

 sunken spire, callous thickenings and columellar ridge ; but less 

 developed specimens are so close to some of the succeeding 

 species that their distinction appears to be somewhat doubtful. 



0. lacertina, Quoy (figs. 15, 16), is a somewhat peculiarly 

 colored young shell of this species ; I have a similar specimen 

 before me. 



0. TiGRiNA, Lam. PI. 20, figs. 11, 18, 80. 



Light yellowish or ash-color, profusely marked Avith small blue- 

 gray spots, occasionally coalescing into short zigzags ; aperture 

 and columella white within. Length, l*15-2'25 inches. 



Ceylon; Java; Philippines; East Africa. 



