130 BOOK OF SPECIES. 



OLIVA. 



Sub-cylindrical) convolute, smooth; spire short ; 

 sutures channelled ; aperture narrow, longitu- 

 dinal, and notched at the base; columella 

 obliquely striated; no operculum, 



O. PORPHYREA. Large, sub-cylindrical, nu- 

 merous rich reddish-brown angular lines, closely 

 fasciculated at the top of each whorl, unite at in- 

 tervals into large masses upon a brilliant flesh- 

 coloured ground; base and spire tinted with violet; 

 the latter small and cuspidate ; from three to five. 

 W. 19. 29. 



O. TEXTiLiNEA. Cylindraccous, ashy white, 

 sub-reticulated by flexuous spots of a cloudy pur- 

 plish brown, edged with fulvous, which unite into 

 two or more bands of letter-like markings ; spire 

 short ; apex obtuse ; callus of the canal and lip 

 yellowish ; the former projecting ; 2| ; when worn, 

 the markings are brown. E. 362. 5 a. b. 



O. ERYTHROSTOMA. Cylindraccous, white or 

 whitish, with rather thick longitudinal flexuous 

 lines of a purplish-brown and yellow tint, and 

 generally with two sub-interrupted brown bands ; 

 lip and columella orange or saffron. 2A. W. 

 19. 30. 



O. TREMULiNA. Differs from the last by the 

 lines being more distant, and the mouth paler. 

 O. MAURA. Cylindrical, black or yellowish 



