66 
TAB. XxvHt- Fa 
PADOLLUS SCALARIS. 
P. albidus rufo-variegatus ; BL penta longitudinaliter 
elevato-tricostatis; anfractu basilarr“ad apicem sca- 
lari, costa inferiore nodosa, media (5-) perforata, 
superiore longitudinaliter striata, insterstitils crenu- 
latis. 
Habitat ——— 
Mus. Brit. 
STAIRCASE PADOLLUS. 
Whitish variegated with rufous; whirls with three lon- 
gitudinal elevated ribs ; basal volution staircase-like above, 
with the inferior rib knotted, middle rib perforated (with 
five holes), upper rib longitudinally striated, the spaces 
between the strie wrinkled. 
“There is one specimen of this rare shell in the British 
Museum, which is the only species of the genus that I have 
had an opportunity of examining. Country unknown. 
The number of perforations may probably not be con- 
stant; the character is therefore not introduced without 
caution. 
