19 
MODIOLA minima. 
TAB. CC X.—Figs. 5 , 0, and 7. 
Spec. Char. Ovato-subtriangular, smooth ; front 
nearly straight, ends rounded, posterior lobe 
small, distinct. 
Only half as long again as wide : it is very broad 
anteriorly, and has small beaks ; the margin forms a 
prominent angle with the hinge line at their junction. 
This occurs in a grey argiilacious Limestone ; the 
largest was sent me from Taunton, by my friend R. 
Hare, Esq. One of the small ones was found near Bel- 
fast, by Dr. M £ Dqiinel, along with Gryphites. 
MODIOLA cuneata. 
TAB. CCXL— Fig. 1. 
Spec. Char. Elongated, convex, smooth ; ante- 
rior part cuneated ; back arched ; front slight- 
ly concave; posterior side distinct, convex. 
A pout twice as long as wide ; most gibbose near the 
beaks, and gradually depressed towards the forward end 
in the form of a wedge. 
From the inferior Oolite of Somersetshire. 
MODIOLA gibbosa. 
TAB. CCXL---jF/g\ 2. 
Syn. Modiola anatina. Smith • Sti'cit . System 89. 
Spec. Char. Elongated, reniform, very gibbose, 
smooth ; back broad, arched. 
Nearly three times as long as wide ; the depth of each 
valve is equal to its width. The end is obtuse, not 
