70 BOOK OF SPECIES. 
dish violet undulated rays ; the whorls contiguous. 
peg. te. 2 W229. 48: 
T. CINERARIUS. Sub-conical, summit pro- 
duced; whorls slightly convex; umbilicus small, 
pale ash-colour, with crowded oblique purplish- 
brown lines. B. 3...3.. W. 29. 49. 
T. Paaraonis. Orbicular- conoid, entirely 
covered by granular belts of crimson, alternating 
with articulated ones of black and white, umbi- 
licated; aperture furrowed within; mouth and 
pillar toothed ; umbilicus crenated. #...%. W. 
28. 30. 
T. ERYTHROLEUCUS. Conical, with obsolete 
transverse crenulated striz, and a broader rib at 
the margin of the whorls; summit crimson; in- 
side pearly; colour yellowish or pinkish grey, 
sometimes clouded with brown; very small. B. 
Weo29. 91. 
T. tumipvus. Sub-conical, transversely stri- 
ated, and the whorls produced and flattish ; body- 
whorl sub-carinated; cinereous brown, more or 
less obscurely streaked longitudinally with brown; 
suture deep; umbilicus small; B. very small. 
W. 28. 207. 
MONODONTA. 
Ovate or conoid; aperture entire, rounded; mar- 
gins disunited above ; columella arcuated, trun- 
cated at the base; an operculum. 
