OF THE FIRTH OF FORTH. 93 
Turritella terebra, var. nivea. 
Not rare on the shore, both east and west 
from Edinburgh. Specially common to- 
wards Cramond Island, and on the shore 
east from Burntisland (JZ). 
T. terebra, var. gracilis. 
Granton and towards Cramond Island, not 
common (JZ). 
PYRAMIDELLID&. 
Aclis unica (Mont.). 
Somewhat rare in fine shell sand on North 
Berwick beach (JZ). 
Odostomia rissoides (Hanley). 
In shell sand, North Berwick (J/)). 
O. rissoides, var. alba. 
Shell sand, North Berwick (J7). 
O. rissoides, var. nitida. 
Shell sand, North Berwick (JZ). 
O. rissoides, var. dubia. 
Shell sand, North Berwick. This species 
is highly variable, and forms occur which 
it is difficult to assign to any of these 
varieties (JZ). 
O. pallida (Mont.). 
Not unfrequent in the shell sand at North 
Berwick (J/,). 
O. acuta (Jeffreys). 
Occasionally in the shell sand, North 
Berwick (JZ). 
O. acuta, var. umbilicata. 
Not unfrequent in the shell sand, North 
Berwick (M.). 
0. unidentata (Mont.). 
Somewhat common in the shell sand at 
North Berwick and Dunbar (JZ). 
O. decussata (Mont.). 
Somewhat rare in shell sand, North Bers 
wick (JZ). 
