INOCERAMUS. 



283 



D'Orbigny identified this species with /. prohleniaticus, von Schlotheim, wliicli 

 comes from the Senonian, and has been shown by Bohm to be distinct from the 

 Turonian form/ 



Uemarlis. — This species is mainly characteristic of the zone of Bhynchonella 

 Ciivieri. In the zone of Tevehratulimi lata it is not common, and the shell is 

 nsnally relatively longer than in typical forms of the species. 



Tijpes. — The type came from the Turonian of Pirna. The specimens figured by 

 Mantell from the zone of Bhunchonclla Gnvlerl of Plumpton are in the British 

 Museum. The large specimen figured by Sowerby from Warminster cannot be 

 found. 



DistribiUion. — Zone of RJn/Jiclionella Gavieri of the Devon and Dorset coasts, the 

 Isle of Wight, Winchester, Eastbourne. Lewes, Plumpton, Dover, Blue Bell Hill 

 (Burham), Betchworth, Watlington (Berkshire), Hitchin, Cherry Hinton, South 

 Thoresby, South Ferriby (Lincolnshire), and the Yorkshire coast. Zone of 

 Terehratidlna lata of the Devon and Dorset coasts, Winchester, Eastbourne, and 

 Dover. 



Recorded by Jukes-Browne from the zone of Tlolastcr snbijloljosns o^ Cambridge- 



FiG. 37. 



Fio. 38. 



Fig. H7-Lwceramuslahiatns (Schloth). The type of Inoceramns mytiloidcs, Mantell, ' Foss S Downs' 

 Ft/^S 'V^ ''■^'""' ^', , ^^"' f R'^yn'^honella Cuvieri, Plumpton. British Museum. Natural size. 

 Fig. 38.-Imceyamus labia/us var. latus, Sow. Zone of Holaster planus. Purley Junction Station Britisli 



Museum, No. L21194.. Natural size. 



1 J. BGhni, ' Monutsber. d. doutscli. geol. Gesollsch.' (1909), p. 117. 



