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. porpHyrREA. 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. 
W349. 29. 
O. TEXTILINEA. Cylindraceous, 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 ; 23; when worn, 
the markings are brown. E. 362. 5a. b. 
O. ERYTHROSTOMA. Cylindraceous, 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. 23. W. 
19. 30. 
O. rREMULINA. Differs from the last by the 
lines being more distant, and the mouth paler. 
O. maura. Cylindrical, black or yellowish 
