162 CHEL0NIA. 



R. 682. Part of the hinder region of the cranium. The tympanic 

 ring and the base of the horn-core of the left side are 

 preserved ; while the basioccipital region is entire. The 

 open stapedial canal and the articular surfaces of the 

 quadrates are well displayed. 



Presented by R. Fitzgerald, Esq., 1885. 



R. 675 C. A number of detached " horn-cores " and other promi- 

 nences of the cranium. 



Presented by R. Fitzgerald, Esq., 1885. 



R. 1594. Cast of a right "horn-core." The original is preserved in 

 the Museum at Sydney. 



Presented by E. P. Ramsay, Esq., 1888. 



R. 1594 a. Cast of a smaller right " horn-core." The original is 

 preserved in the Museum at Sydney. 



Presented by E. P. Ramsay, Esq., 1888. 



R. 675 d. Fragment of the cranium. 



Presented by R. Fitzgerald, Esq., 1885. 



R. 677. The anterior portion of the left maxilla. 



Presented by R. Fitzgerald, Esq., 1885. 



R. 677 a. The imperfect anterior portion of the left maxilla. 



Presented by R. Fitzgerald, Esq., 1885. 



R. 677 b. Fragment of the right maxilla. 



Presented by R. Fitzgerald, Esq., 1885. 

 R. 1594 c. Cast of a slightly imperfect cervical vertebra. The 

 original is preserved in the Museum at Sydney, and is 

 figured by Owen in the ' Phil. Trans.' for 1888, pi. xxxv. 

 figs. 1-3, as a dorsal. There are two transverse processes, 

 the upper one being situated in part upon the neural 

 arch ; there is no haemal spine. Cervical ribs may have 

 been present. This vertebra is readily distinguished from 

 the cervicals of Crocodiles by the peculiar upward flexure 

 of the superior surface of the neural arch, and the absence 

 of a haemal spine. 



Presented by E. P. Ramsay, Esq., 18S8. 

 R. 689. The neural arch of a similar cervical vertebra. 



Presented by R. Fitzgerald, Esq., 1885. 

 R. 693. The imperfect centrum of a large (late ?) cervical vertebra. 

 There is a haemal carina ; and there was probably but one 

 transverse process. 



Presented by R. Fitzgerald, Esq., 1885. 



