104 BOOK OF SPECIES. 
body-whorl with four rows of nodules; mouth 
orange ; lip furrowed within. 2. W. 22. 57. 
P. MANCINELLA. Ovate-ventricose, thick, ful- 
vous or flesh-colour, with transverse grooves, 
and four rows of blunt spines; spire conic, acute; 
mouth yellowish orange; lip with elevated red 
strize within. 24. W. 25. 52. 
P. NERITOIDES. Ovate-abbreviated, ventri- 
cose, thick, transversely striated, dirty white ; 
body-whorl with four rows of nodose tubercles ; 
spire very short and obtuse; pillar flattened, with 
two unequal black spots in the middle; mouth 
white and smooth. 13. W. 26. 49. 
P. sertuM. Ovate-oblong, with transverse 
crenulated striz, crossed by longitudinal impressed 
lines, reddish, fawn, or chestnut, with a paler 
band apparently composed of longitudinal broad 
spots on the body-whorl; whorls rounded, de- 
pressed above ; pillar fulvous, with a plait opposite 
the tooth at the summit of the inner margin of 
the lip, which latter is smooth and white, with 
another tooth at its base. 2%. W. 23. 65. 
P. LAPILLUS. Ovate-acute, transversely stri- 
ated, dirty white or yellowish, sometimes zoned 
with brown or yellow, when perfect with mem- 
branaceous longitudinal wrinkled striz, but is 
generally worn smooth; spire conic; lip slightly 
toothed within. B.14. W. 23. 62. 
