TEREBRATULA coarctata. 

 TAB. CCCXIL—Figs, 1 to 4. 



Spec. Char. Subheptagonal, gibbose^ hispid, and 



decussated ; lesser valve convex, subtrilobated ; 



larger valve biplicated, with a deep angular 



sulcus between the plaits. 

 SvN. Terebratulites coarctatus. Parkinson Org, 



Rem. III. 229. 



Terebratula reticulata. Smith Strut. Si/st^ 



83. Strata identified. 30. fig, 10. 



Jl ERHAPs it would be more correct to describe this shell 

 as five than as seven-sided, two of the sides being gene- 

 rally very small and convex : the length is rendered 

 greater than the width by the projecting beak : the two 

 plaits or ridges upon the larger valve appear as if pinched 

 up, whence the name : the minute bristles that render the 

 surface hispid, are short, often tubular, and are situated 

 upon the angles of intersection of the two sets of lines, 

 of which the longitudinal are elevated and cut by the 

 transverse. 



This is characteristic of the clay upon the Great or 

 Bath Oolite ; I have received it from C. W. Loscombe, 

 Esq. and other friends from Hinton, near Bath, &c. 

 Supposing this to be T. coarctatus of Parkinson, I have 

 retained that name for it, and applied Smith's name 

 reticulata to the following, which he either did not know, 

 or did not think to be a distinct species. It is figured by 

 Walcott in his Petrefactions found near Bath, No, 28 ; 

 his specimens are from Hampton Down. 



