46 , ANOMOBONTIA. : 



Cistecephalus microrhinus, Owen *. 



Syn. Cistecephalus chelydroides, Owen 2 . . 



The type species. Skull (fig. 12) very broad and flat, of trian- 

 gular contour, and with very wide parietal and interorbital bars. 

 Tbe presence of tusks is shown in one of the undermentioned 

 specimens. 



Hob. South Africa. 



47086. The imperfect cranium, partly embedded in matrix ; from the 



{Fig.) Karoo system of Styl-Krantz, on the flanks of the Sneew- 



berg range. The type specimen ; figured by Owen in his 



' Catalogue of the Fossil Beptilia of S. Africa/ pi. lxiv. 



figs. 4-7. Presented by A. G. Bain, Esq., 1853. 



47071. The imperfect skull, with portions of the vertebral column, 

 (Fig.) pectoral girdle and limbs, partly embedded in matrix ; 

 from Styl-Krantz. Part of the occipital region of the 

 cranium, the two scapula?, the right side of the (?) clavicle, 

 the proximal half of the right humerus, and a section of 

 two cervical vertebras are figured by Owen in his ' Cata- 

 logue,' pi. lxix. figs. 7-10 ; and the frontal and occipital 

 aspects of the cranium are shown in fig. 12. This speci- 

 men is noticed by Seeley in the ' Phil. Trans.' for 1888, 

 pp. 489 (errore as No. 17071) and 496, where the 

 characters of the scapula and humerus are discussed. The 

 bones marked eo in the figure, which impinge on the 

 borders of the foramen magnum, appear to be certainly the 

 exoccipitals, while the one marked so cannot be any- 

 thing but the supraoccipital. This small size of the ex- 

 occipitals is a feature often found in Mammals. The bone 

 regarded by Owen as the interclavicle or episternum (It of 

 figure) is referred by Seeley, op. cit. p. 491, note, to the 

 clavicle. 



Presented by W. G. Atherstone, Esq., M.D., 1875. 



47068. The imperfect cranium of an individual of rather larger size 

 (Fig.) than the two preceding specimens ; from Styl-Krantz. 

 The type of C. chelydroides ; figured by Owen in his 

 4 Catalogue,' pi. lxiv. figs. 8, 9. The alleged difference in 

 the proportionate size of the orbits and temporal fossae 

 as compared with the preceding specimens is certainly not 

 a specific one. Presented by A. G. Pain, Esq., 1853. ' 



1 Cat. Foss. Kept. S. Africa, p. G3 (1876). 2 Ibid. p. G4. 



