36 ICHTHYOPTERYGIA. 



46790. A comparatively large left quadrate ; from the Kimeridge 



Clay of Eoxhangers, near Devizes, Wiltshire. 



Cunnington Collection. Purchased, 1875. 



46791. A rather smaller quadrate of the same side ; from Fox- 



hangers. Cunnington Collection. 



43294. Three specimens of the articular bone of the mandible of a 

 large individual ; from the Kimeridge Clay of Weymouth, 

 Dorsetshire. Purchased, 1871. 



42373. Two very similar specimens ; from Weymouth. 



Purchased, 1871. 



45905. The basioccipital of a large form ; from the Kimeridge Clay 



of Weymouth. This specimen is somewhat waterworn. 



Purchased, 1874. 



45907. A slightly smaller basioccipital ; from Weymouth. 



Purchased, 1874. 



41776. A very similar basioccipital, in a somewhat crushed con- 

 dition ; from Weymouth. Purchased, 1869. 



41776 a. The basisphenoid of a very large individual ; from Wey- 

 mouth. This specimen is characterized by the shortness 

 of the antero-posterior diameter of the palatal surface. 



Purchased, 1869. 



40337. The basisphenoid of an equally large but specifically distinct 

 form ; from Weymouth. The palatal surface is elongated 

 antero-posteriorly. Purchased, 1867. 



45906. A smaller basisphenoid of similar type ; from Weymouth. 



Purchased, 1$74. 



47326. The imperfect basisphenoid of a large form ; from the 



Kimeridge Clay of Swindon, Wiltshire. Presented by the 



Directors of the Swindon Brick and Tile Company, 1876. 



R. 472. A smaller basisphenoid : from the Oxford Clay of Stan- 

 ground, near Peterborough, Northamptonshire. 



Presented by Sir li. Owen, K.C.B., 1884. 



R. 494. Cast of the extremity of the mandible of a comparatively 

 small form. Tho original was obtained from the Upper 

 Jurassic of Monte Lessini, in the Tyrolese Alps (Verona), 

 Italy. The teeth appear to have been small, and the 



