DESClilPTION. 
155 
shell flat underneath, longitudinally and trans- 
versely striate ; acute margin of the whorls formed 
of a triple belt. 
Inhabits the shores of Asia and Africa. 
Fig. 2. T. Zizyphimis. 
Shell conical, smooth ; whorls margined. 
Lister Conch, Tab. 616. Fig. 1. 
Specimen livid, with red indistinctly waved rays 
and spots upon the margin ; transversely striate ; 
whorls contiguous, upper ones finely granulate : 
aperture pearly. 
Inhabits the European and African seas. 
Fig. 3. T. dolahratus. 
Shell umbilicate, glabrous ; columella recurved, 
twisted and plaited. 
Lister Conch, Tab. 844. Fig. 72. 
Shell white, with purplish brown transverse lines ; 
whorls somewhat rounded, separated by a groove ; 
columella with three folds. 
Inhabits South America. 
Fig. 4. Turbo muricatus. 
Shell umbilicate, subovate, acute, surrounded 
