TURRITELLA granulata 
TAB, DL XV.— jig. 1. 
Spec, Char. Subulate, transversely striated and 
granulated ; whorls about fifteen, their upper 
edges bordered with an antiquated band. 
The rows of granules between the striae are very cha- 
racteristic of this species; they are numerous, but three 
or four of them are generally larger than the rest. 
Very abundant, replaced by Silex, in the whetstone 
pits at Blackdown, where it appears to be gregarious. 
It is mentioned as a Turritella by Smith in his Strati- 
graphical System, p. 25, and figured in his Strata Iden- 
tified. Parkinson calls it Cerithium turritellatum, which 
is however a different shell (Org. Rem. vol. iii. p. 71.), 
so that it does not appear to have been hitherto cor- 
rectly named. 
The group figured is part of a larger one in the cabi- 
net of II. H. Goodhall, Esq. 
TURRITELLA abbreviata. 
TAB. DL XW.—Jig. 2. 
Spec. Char. Conical, pointed ; two small close 
ridges run round the middle, and one large 
obscurely granulated ridge forms each edge 
of every whorl, the produced base has one 
ridge upon it. 
A very short turreted shell with about seven whorls. 
I have not seen the aperture, but judge by the lines of 
growth and the absence of plaits upon the columella 
that it is a Turritella. 
Found in the decomposing carboniferous Limestone 
(Mountain Limestone) of Bradley, near Newton Bushel, 
Devonshire : the specimen is in the cabinet of H. T. De 
la Beche, Esq. 
