FISHES. REPTILES. 



135 



Nemacanthus, known only by spines ; and Hybodus, of which spines 

 and teeth are known. Others are Ganoid, as Leptolepis and 

 Gyrolepis, known only by scales ; Aechmodus, Dapedius, Pholido- 

 phorus, and Tetragonolepis, which are in a state of completeness. 

 Lepidotus occurs complete in Northamptonshire. Saurichthys has 

 left only teeth. The nomenclature is that of Agassiz. 



REPTILIA. 



Ichthyosaurus communis. Conyb. L. Wilmcote. 



intermedius. Conyb. L. Near Tewkesbury. 



,, tenuirostris. Conyb. L. Near Tewkesbury. 



Plesiosaurus megacephalus. L. Wilmcote. 

 Dimorphodon (coracoid). Wright. U. Gloucestershire. 



bone of. Buckm. M. Dumbleton. 



Teleosaurus. sp. Wright. U. Gloucestershire. 



The small number of reptiles in this list corresponds with the 

 limited extent of workings in the lias. Farther to the north, at 

 Barrow-on-Soar, and to the south, at Street near Glastonbury, the 

 lias limestones, of the same early age as those of Wilmcote and 

 Bidford near Stratford, appear to be more productive of Saurians ; 



Diagram XX VI. Paddles of Ichthyosaurus, from Wilmcote. 



and the greater richness of the cliffs of Whitby and Lyme Regis, 

 in beds somewhat higher in the series, is well known. The species 

 of Ichthyosauri are by no means fully denned at present. The best 

 specimens from the Warwickshire district are at Warwick and 

 Oxford, and have been examined with some care. The diagram 

 above represents paddles of the species supposed to be Ichthyosaurus 

 intermedius, but they differ from others whicji bear the name in 

 the emargination of the radial and phalangal bones. 



