1G7 
CERITHIUM funiculatum. 
TAB. CXLVIL —Fig. 1 and 2 . 
Spec. Char. Pyramidal, sides straight; whorls 
with four, nearly equal crenulated carinae on 
each ; base with several plain elevated ridges. 
Although the carinae are nearly equal, the uppermost 
or marginal one is rather the largest and the next the 
smallest ; the carinae look like closely knotted cords^, 
twisted at equal distances round the spire. 
This species was found at Plumstead, in a gravelly 
soil, with other shells formerly described. Before com- 
parison, it so much resembled those of fig. 3 and 4 from 
Charlton, that I thought them the same species. I pre- 
sume* however, they are different enough to be consU 
dered distinct. 
CERITHIUM intermedium. 
TAB. CXLVIL— Fig. 3 and 4. 
Spec. Char. Pyramidal, sides straight; whorls 
with a largely crenulated margin and five or six 
unequal carinae on each ; base with several 
elevated ridges. 
The difference between this and the last lies principally 
in the irregularity of the Carinas ; the upper carina is so 
near the edge, so large and so deeply crenulated, that 
it forms a margin or border to the whorl ; the others are 
unequal both in distance and size, and are either plain 
or irregularly subtuberculated ; the lines of growth in 
both are sharp. 
