214 Mr. F. P. Marrat on some new Species of Oliva. 



colour yellowish white, with triangular brown markings, with 

 two broad indistinct bands ; columellar lip with few plaits ; 

 aperture pale purple, almost white. 



Obs. Resembles the 0. jaspidea, Duclos, O. Duclosii, Keeve, 

 but may at once be known by its oblique and narrow form. A 

 very pretty shell, and I have seen at least twenty specimens. 



4. Oliva piper ata, Marrat. 



Shell obliquely fusiform ; spire elongated, blunt, canalicu- 

 late ; aperture widening downwards ; colour white, with purple- 

 brown spots ; suture edged with pencilled lines, which terminate 

 in dark triangular brown blotches. 



Obs. Allied to 0. conoidalis, Lam., but much more elongated, 

 and the markings are altogether different. 



5. Oliva faba, Marrat. 



Shell cylindrical ; spire short ; whorls rounded, canaliculate ; 

 colour yellowish white, with brown zigzag markings ; mouth 

 purple brown ; plaits on the columella numerous. 



Philippines. 



Obs. This species appears somewhat intermediate between O. 

 todesina, Duel., and 0. ispidula, resembling the former in form 

 and the latter in the open sutural groove. 



6. Oliva blanda, Marrat. 



Shell ovate-cylindrical ; spire callous ; colour dark drab with 

 dark-brown zigzag lines ; aperture purplish brown ; pillar-lip 

 swollen, plaits sharp ; size about 1 inch. 



7. Oliva cylindrica, Marrat. 



Shell cylindrically fusiform ; spire depressed, canaliculate ; 

 colour either light or dark drab, with brown zigzag lines shaded 

 with yellow, and sometimes two interrupted bands ; aperture 

 from pale to very dark purple ; folds at the base stained with 

 brown. 



Borneo. 



Obs. This is allied to the Borneo form of O. irisans, Lam., 

 the spire of which is callous. 



8. Oliva ornata, Marrat. 



Shell ovate-subcylindrical, rather inflated ; spire callous, apex 

 papillary; cream-coloured, with light-brown markings, some- 

 times double-bauded with dark-brown spots; pillar thickened, 

 white, slightly plaited. 



North Australia. 



Obs. The only species having a callous spire from Australia. 



