166 



TEREBRATULA nuciformis. 



TAB. Dlh— fig. 3. 



Spec. Char. Transversely oblong, globose, regu- 

 larly plaited ; front elevated ; beak produced ; 

 plaits 30^ rounded. 



Smaller than a hazel-nut. The edges of the plaits are 

 rounded, and near the front often have a sunk line upon 

 them. The specimens being empty, show the arched 

 processes from the hinge neatly preserved. 



Found near Farringdon by Mr. Sowerby in 1809, in a 

 pit called a gravel pit rendered remarkable by a great 

 number of cup-shaped fossils, which Mr. S. proposed to 

 call Spongia pezizoides (see Brit. Mineralogy, tab. 48^, 

 ^nd Linn. Trans, x. 405). 



TEREBRATULA acuta. 

 TAB. DIL— /g-.4. 



Spec. Char. Transversely oblong, gibbose, large- 

 ly plaited; front elevated with 6 plaits, of which 

 the lateral ones are the largest; beak' slightly 

 produced ; plaits 20, sharp. 



1 HE strong resemblance of this to the others before us 

 is very striking ; but the sharpness of the plaits, and the 

 size of those especially that bound the elevated front, al- 

 though variable, will distinguish it; the beak is also 

 smaller and more curved. 



Presented by Miss E. Warne, who obtained a good 

 series from ochraceous Limestone at Cleeve Hill near 

 Cheltenham in 1820. 



