“3 
TO GEOLOGY. 121 
S. elegans. Plate 4, Fig. 109. 
Description. Shell subdiscoidal, polished, transversely 
striate above, with two or three granular transverse lines ; 
substance of the shell thin; spire flattened ; suture fur- 
rowed ; umbilicus wide, perspective, crenulate ; whorls 
five ; mouth round. 
Length 3-20ths, Breadth .3, of an inch. 
Observations. One of the specimens is so perfect as to 
present coloured spots (oblique) on the whorl. It is with 
much hesitation I place this and the two following species 
in the genus Solarium. Their mouths are round, and 
somewhat like that of the Delphinula and Turbo, but the 
crenulate umbilicus seems to make it necessary to place 
them in this genus. In the form of the mouth they re- 
semble the S. variegatum (Lamarck), which is nearly 
round. With that species they might form a natural group. 
4 S. cancellatum. Plate 4. Fig. 110. 
Description. Shell subconical, crossed by longitudinal 
and transverse strie, which are thickened at the intersec- 
_ tion ; substance of the shell thin ; suture furrowed ; umbi- 
licus rather wide, crenate without, cancellate within, per- 
spective ; whorls four ; mouth suborbicular. 
Length .1, Breadth 3-20ths, of an inch. 
The smaller figure is of the size of nature. 
Observations. This beautiful little species has in its ge- 
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