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MODIOLA parailella. 
TAB. 1X.—Upper right hand figure. 
Spec. Cuar. Shell transverse, anterior and posterior 
sides parallel ; covered with transverse furrows. 
Neanrty twice as broad as long; acutely convex; beaks 
rather sharp; transverse furrows or stria few, diverging 
from the beak; inferior margin straight, short, and almost 
at right angles with the sides, which are nearly straight 
and parallel. 
I found this in a quarry near Maidstone; it is in a darkish 
Limestone which may perhaps be compared to the Blue 
Lyas of Bath; it is only the impression of the outside. I 
have met with no other specimen of this species. 
MODIOLA elegans. 
TAB. IX.—Left hand upper figure, middle 
figure, and lower figures. 
Spec. Cuar. Oblong, gibbous, inferior margin 
straight, dentated; anterior side covered with 
transverse furrows; posterior side swelling, 
smooth, with a few transverse furrows-near the 
base. 
Generatzy about twice as long as broad, moderately 
convex, beak a little curved; strie neat, close, a little un- 
dulating, passing from the beak over the most prominent 
part of the shell, and diverging over the anterior side to the 
