74 MOLLUSCA. 
SHELL turreted, ovate, acute at apex, opaque, solid, irregularly 
striated with the incremental lines, of a livid purplish, or plum- 
colour, with an ash-coloured zone about the umbilicus, a band conti- 
guous to the suture, and occasionally the lines of growth of the same 
colour. Whorls six, slightly convex, and somewhat shouldered above, 
the last one nearly two-thirds the length of the shell. Aperture ovate, 
rather small, lip simple, thickened, and yellowish-white within ; colu- 
mella with a moderate fold, rapidly widening upwards, and covering 
a small umbilicus ; throat livid purplish. 
Length of axis seven-eighths of an inch; diameter three-eighths 
of an inch. 
It probably came from the Madeira Islands. 
This species belongs to the same group as B. badiosa, Ferus., and 
B. beticata, Reeve, species which differ from it in being curiously 
granulated. 
Figures 83, 83 a, two views of the shell. 
Butimus PROLATUS (Gould). 
Testa ovoidea, antrorsum angustata, leviter striata, albido-cinerea, 
fasctis quatuor liturarum ferruginearum cincta : sptra ovato-conica ; 
anfractibus quinque convexiusculis : apertura elliptica, totius longitu- 
dinis dimidium adequans ; labro simpliet, acuto : columella brevis, laté 
reflexa, alba, umbilicum parvum tegens. 
Bulimus prolatus, Goutp; Proceed. Boston Soc. Nat. Hist., ii. 191. 
Dec. 1846. Expedition Shells, 32. Prrtrrer; Monog. Helic. Viv., ii. 
al 
SHELL an elongated, prolate spheroid, nearly as much attenuated 
at base as at spire, surface nearly smooth and regular, of a grayish or 
ash-colour, with about four revolving bands of partially connected 
blotches on the large whorl, and three on the smaller ones. Whorls 
five, slightly convex, and very little rounded at the sutures. Aperture 
about half the length of the shell, of an elliptic form, a little angular 
