32 



hair. The hack is remarkable for a flat space between 

 the beaks, not generally observable in this genus. The 

 surface has several large longitudinal furrows, without 

 regularity, and excepting the fine close strize, is smootb. 

 The shell is very thick, and rough within. 



Collected by Mr. Farey, in the Wayboards between 

 the Limestone, under the Coal, at Llangaveni in Angle- 

 sea : it is accompanied by small Trilobites imbedded in 

 a kind of Shale. 



PRODUCTUS latissiraus. 

 TAB. CCCXXX. 



Spec. Char. Transversely oblong, depressed, 

 coarsely striated ; beak much incurved ; 

 hinge line very long. 



A HE long hinge line, partly concealed by the beak, and 

 the coarse pattern upon the surface, distinguish this from 

 the last : the shell also appears to be thinner, and the 

 space between the heaks is much narrower. 



Found in a Cherty Limestone, at Tyddmawr Farm in 

 AtigSesca, by Mr. Farey. Tlie shell is in many parts 

 gone, and its place supplied by Silex in numerous small 

 drops, each surrounded by several irregular rings of the 

 same material, a fonn of Silex not rare among fossil 

 remains of shells composed of laminae strongly impreg- 

 nated with gluten, as Ostrea Pectens, &c. in the green 

 sand and other formations, and lately met with, forming 

 hollow tuberose masses that fall out of decomposing 

 Limestone in Devonshire. 



The upper iigure is from a neat little specimen brought 

 from Puffin's island, N. of Anglesea, by Samuel Hawkes 

 jun. Est][. The shell upon it is entire. 



