362 TEREBRATULIDiE. 



side of it the surface is a little tumid : the corresponding 

 elevation in the upper or dorsal valve, if present at all, 

 does not appear prominently developed. The umhones are 

 scarcely raised above the hinge-line, and are habitually 

 more or less abraded. The cardinal area is depressed and 

 triangular ; the foramen is extremely large ; the chief por- 

 tion of it is situated in the dorsal valve, the circuit being 

 completed by the hinge-margin of the other, which is often 

 a little concave (perhaps from friction) at that part. The 

 inner edge is not crenated, but is somewhat radiatingly 

 scabrous. 



We have not been willing to destroy our examples by 

 the examination of the internal appendages ; judging from 

 analogy it is probable that they closely resemble those of 

 detruncata^ the species, which of those delineated in 

 Sowerby's excellent monograph of Terebratula^ most nearly 

 approaches it in general characters. The shape seems 

 nearer to the decoUata of the same work. Individuals 

 measuring the eighth of an inch from side to side may be 

 accounted large ; indeed few of those we have seen exceed 

 a single line. 



This rare and curious little Brachiopod was originally 

 known only in the fossil state, having been discovered by 

 Mr. Searles Wood in the Coralline Crag of Sutton. From 

 that active and observant paleontologist it received a 

 name, but was announced without any description or figure. 

 In the Annals of Natural History for July, 1847, Mr. 

 Jeffreys announced that he and Mr. Barlee had lately 

 procured, by dredging off Skye, in forty fathoms, a few 

 valves of a shell which he referred with doubt to the J'ere- 



* An example of this species was found among Tui'ton's shells, with the loca- 

 lity, "Torbay," attached. Unfortunately, no dependence can be placed in any 

 statements of his respecting the indigenousness of any of our doubful Testacea. 



