136 



mention that the specimen for which I have ventured to propose 

 the name of Cirrus intermedius, is figured by Sowerby under the 

 name Cirrus nodosus, with the following remarks : 



Dr. Leach, at present so well known for his extensive researches into 

 natural history, some years since presented me with this specimen, picked 

 up near Yeovil. It is a reverse shell, 8 nd seems to have been gregarious ; 

 two were here crowded together ; there were signs of ammonites in the 

 mass; It has had apparently a very acuminated spire, seven turns of which 

 remain, and the space above for as many more, according to the general 

 proportions."* 



I shall presently describe the forms met with, but it will perhaps 

 be well to first point out their position. 



The bed in which these Univalves occur is part of what we 

 have named the Dorset Cephalopoda bed. It rests upon the 

 sands at Bradford Abbas, Half Way House, and at East Coker, 

 near Yeovil. The reversed Univalves are not common to the two 

 first places, but occur abundantly at Coker with other Univalves. 

 They are not well preserved at Coker, and hence we are on the 

 look out for better preserved specimens before definitively deter- 

 mining the species. 



The section of Bradford Abbas (East Hill) quarry. 



1 SoU 4 



}Trigonia Grit of Buck- 

 man, Geol. of Chelten- 

 ham. 



3 Band of Marl with Astarte Lima and Ter. "| 



Morieri 31 



4 Hard Ironshot Rock with Ammonites Belem- 



nites. &c 1 0| 



5 Band of Brownish Stone full of Univalves j Cephalopoda be{1 Gry . 



1 1 Sffite 



8 Bed with Ammonites aalensis " Dew bed " 9 j 



9 Blue centred Oolite 1 2| 



10 Sands lower freestone system of the Cottes- 



wolds J 



The specimens then occur in that highly fossiliferous stratum 

 which has yielded such a rich fauna to the well plied hammers 

 of our local geologists. 



It is, however, at Coker that these reversed shells so greatly 



* Sowerby's Mineral Conchology, vol. 2, p. 94, 





