60 



Glass-case 

 No. I., and 

 Table-case, 

 No, 17. 



Theriodontia — Clepsydropidoe. 



Two very remarkable genera of Theriodnnts, Gynognathns and 

 Gomphognathns, have lately been described by Prof. H. Gr. 

 Seeley. In both the skull is remarkable for its mammalian 

 appearance, that of Cynognatlius especially, with its small^'incisors 

 and powerful canines, having a striking resemblance to the 

 skull of a Carnivore, such as the wolf. The occipital condyle 

 is double, also a mammalian character, and the quadrate is 

 much reduced. An imperfect skeleton of Cynognatlius crater- 

 onotus is exhibited in a separate case in the middle of the gallery. 

 Gomphognathus is further remarkable for its broad-crowned 

 molar teeth. 



Fia. 81. — Palatal aspect of cranium of Emitei/ias molans (Cope;, J nat. size-; 

 from the Permian of Texas, North America. 



Naosaurus. Family Clkpsydropid.e. — These Theriodonts differ from the 



Gales/^urid^ either in having teeth on the palate, or by tlie 

 extraordinary character of their dorsal vertebrae, in which large 

 intercentra are typically present. Tliese forms all belong to 



