115 
TEREBRATULA acuta. 
TAB. CL.---Fig. 1 and 2. 
Spec. Cuar. Ovato-triangular, slightly transverse ; 
middle elevated by one large acutangular plait ; 
sides with one large and several small plaits 
each. 
Tue sinus in the front of this is nearly an equilateral 
triangle, with slightly rounding sides ; the lateral plaits 
are seldom more than two on each side, the first is large, 
sharp, and extends almost to the beak, the others are 
little else than marginal undulations. 
Mr. Richard Taylor, jun. having sent this as found in 
the coarse Limestone of Staunton hill, Gloucestershire, 
and as it is rarely met with, I thought it desirable to see 
a figure, and as I have also received it from my kind 
friend, Mr. Strangwayes, from the coarse Limestone at 
Ilminster, it became the more convenient to publish a 
designation of it, and still further, as I have received the 
same species from France. It suggested its own name, 
by which it may be easily recognized. The British spe- 
cimens that [have seen are much worn. The French 
one is a less transverse variety, also more acute in its 
form, with a straighter front and greater elevation of the 
middle: fig. | is arepresentation of it for comparison. 
