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TURRITELLA Terebra. 
TAB. DL XV.— jig. S. 
Spec. Char. Turreted, elongated transversely 
sulcated ; whorls convex, sulci many, nearly 
equal ; spire pointed. 
Syn. Turritella Terebra. Lamarck Hist . Nat. 7. 
p. 56. Turbo Terebra Auct. 
If this differ at all from the recent species, it is in the 
thickness of the shell and greater distinctness of the 
whorls ; but these differences are very slight. 
Found with Rostellaria Pes Pellicani (t. 558.) by 
Mr. Rose of Swaffham. I suspect both to be shells of a 
more modern growth than any genuine Crag shells. 
TURRITELLA costata. 
TAB. BLXV.— fig. 4. 
Spec. Char. Subulate, striated, rough, costated; the 
costae terminate above the lower carinated edge 
of each whorl ; base flat, its edge carinated. 
The carinated edge of this elegant shell forms a thread 
that winds round the spire separating the costae of one 
whorl from those of the next ; the whorls are very nu- 
merous. 
An individual of this species is now and then met with 
along with T. granulata. 
TURRITELLA concava, 
TAB. DL XV. -Jig. 5. 
Spec. Char. Short subulate, smooth ; whorls many, 
concave ; base convex. 
From eight to twelve whorls with elevated edges and 
concave surfaces form this shell : when full grown the 
last whorls have a ridge in the middle, as shown in the 
lower figure. 
Occurs not rarely in the Limestone at Chilmark near 
Tisbury, Wiltshire. Presented by Miss Benett, 
