147 
TEREBRATULA porrecta. 
TAB. DLXXVI.—/ig. 1. 
Spec. Cuar. Nearly square, with rounded angles, 
convex, smooth ; beak of the larger valve very 
much produced, pointed, slightly curved, the 
area within it large ; margin sharp. 
Mosr specimens have the beak of the larger valve al- 
most straight: it is perforated, but the perforation is 
elongated and placed within the sharp apex, and point- 
ing towards the sinus in the area, which it nearly meets: 
the largest specimen is wider than long; the others vary, 
but in general are longer than wide, with an obtuse an- 
gular front. 
From the Carboniferous Limestone of Bradley, de- 
scribed in a paper now in course of reading before the 
Geological Society, from H. T. De la Beche, Esq. It 
was accompanied by several uncommon shells. See 
tab. 566. p. 128. 
