278 
auricles moderately large and obliquely striated; lunule exca- 
vated; height two and a quarter inches, diameter two inches, 
thickness through both valves 17 lines. 
This shell differs from L. cardiiformis, Sow., in being more 
equilateral and upright, more tumid, and the ribs more regular. 
In outline the figure approaches L. impressa, Lyc., but the 
ribs are quite different. There is a Lima in the lower beds of 
the Freestone in the Inferior Oolite as yet undescribed, which 
seems to be closely allied to this shell, but it has smaller ribs 
and is slightly more oblique. 
Locality.—Tiltup’s End, near Nailsworth, in the White 
Limestone, (Great Oolite) and in the overlying Nerinza bed, 
where it is somewhat rare. . 
Addendum to the description of Fossils from the Clypeus Grit of 
the Inferior Oolite. Vol. VII., page 128. 
Nerinaza Guise1, Witc., Pl. V., fig. 10, 10a, and Vol. VII., 
Pl. IV., fig. 2a, 2b, 2c. 
I have found a fragment of this shell which, though not 
well preserved, indicates the character of the aperture, which 
may be described as sub-quadrate, widening at the termination, 
the outer lip having a sharp angle; channel small. The 
specimen now figured shows that in the young forms the rela- 
tive height of the volution to the diameter is greater than in 
a more advanced stage of growth. Fig. 10a shows the internal 
characters more clearly than they are represented in the previous 
figures. 
