178 PEDINA. 



affinity which exists between them ; it is not improbable that a series of specimens might 

 prove //. Bakeri to be the young condition of Pedina Smithii, although, in the present 

 state of our knowledge of these forms, I should not be justified in stating such 

 to be the fact. 



Locality and Stratigraphical position. — The large fragment (fig. 2 a) was collected 

 by the late Dr. William Smith, at Tucking Mill, in Moreton Combe, south-east of Bath, 

 from a rock which I take to be Inferior Oolite. The specimen (fig. 2 c) I collected 

 from the Inferior Oolite at Birdlip, near Cheltenham ; it is the only specimen of the 

 species I have found. 



History. — As this is one of the Echinodermata belonging to Dr. Smith's original 

 geological collection, deposited in the British Museum, its history is more than usually 

 interesting. My friend, Mr. Woodward, first called Professor Eorbes's attention to the 

 specimen, who named it in honour of the father of English geology. In the description 

 of the species, however (Notes on British Echinopsis, in the ' Memoirs of the Geological 

 Survey,' Decade V), it is erroneously stated to have been collected from the Coral Rag, 

 instead of from the Inferior Oolite. This remarkable form is now figured for the 

 first time. 



