1859.] OWEN REPTILIAN FOSSILS. 61 



the structure of the occipital region of the skull also conforms to the 

 type of those singular South African reptiles. The breadth and 

 flatness of the skull and the proportions of the orbits and temporal 

 fossae recall the proportions of Simosaurus amongst the peculiar sau- 

 rians of the triassic deposits of Germany. 



The original (from the Ehenosterberg) was transmitted to the 

 British Museum by Governor Sir George Grey, K.C.P. 



Genus CrxocnAHPSA*, Ow. 



Cynocliampsa laniarius, Ow. (PL III. figs. 1-4.) 



This genus and species are indicated by the extremity of the upper 

 and lower jaws (figured in PI. III. figs. 1-4), from the same locality as 

 Qalesaurus, and forming part of the same collection transmitted by 

 ( '• i ivernor Sir George Grey, K.C.B. Sufficient of the jaw is preserved 

 to show that it must have terminated in a more or less produced 

 narrow muzzle, which, including the under jaw, would present a 

 subi ■ylindrical transverse section, as in the Gavial and Teleosaur: 

 but a close-set series of small and similarly sized incisor teeth are sepa- 

 rated from the rest of the dentition by a pair of upper and a pair of 

 lower canines, as well contrasted by their superioritj" of size as in 

 Galesaunts. Instead, however, of these canines being immediately 

 followed by small molar teeth, there was a toothless space extending 

 at least as far as the upper jaw has been preserved on the fossil under 

 description ; and tins space ecpials at least twice the breadth of the 

 crown of the upper canine. 



The upper incisors are ten in number (five in each premaxillary 

 bone), conical, with a subcylindrieal base. The lower incisors, of 

 similar size and shape, appear to have been eight in number. Both 

 upper incisors and canines overlapped those teeth in the lower jaw 

 when the mouth was shut. The crowns of the upper canines and 

 the implanted roots of the lower ones have been broken across, ex- 

 piring the pulp-cavity, as is shown in looking upon the fossil from 

 In-low, as in fig. 4 c, <•' ; and the Lower canines are a little in advance 

 of the upper ones. The relative positions of the incisors and canines 

 were nearly the same as in QaUcyrms; the crowns of the lower 

 canines were perhaps more completely concealed when the mouth 

 shut. The nostril is single, terminal, of a transversely oval 

 shape, with the plane of its outlet inclined from above down- 

 ward ami forward. The aperture is bounded by the premazillaries 

 (fig. '•'> aa) below and at tin- sides, ami by the nasals (ib. ij) above. 



The extremity of tie- upper jaw. pierced by the nostril, is slightly 

 expanded, as in the Teleosaur, hut in a less degree than in flu- QaviaL 



In a collection of fossil remains from the Drakenberg Mountain, 

 mar Hanisinith. Cape of Qood Hope, transmitted in 1 864 by Joseph 

 Millard Orpin. Esq., Government-Surveyor of that Colony, ami de- 

 scribed in the -Catalogue of the Fossil Organic Remains of EteptQia 



* From Ki'i.iy. a dog; and \<i/n!«/i. the Egyptian name Bar the crocodile, 



applied by \\*ai_-n< r to the Indian (lavial. 



