Fussil Beptiles. 2()'J 



name Jherocephafia. We have thus three groups of inammal-like 

 reptiles AnonKxlontia, Cynochmtia (=Therit)d(>ntia) and Tlwro- 

 cephalia. A fourth allied group is represented by Ddpliinogna- 

 thiis and the [apparently nearly allied Titanosuclius, to which 

 Seeley's name Dinocephalia may be applied. These foiir groups, 

 of which the most primitive is Thei-ocpphalia, are all closely 

 related, and should either be regarded as Orders of a single 

 Superorder, or possibly as Suborders of a single Ordei-. For this 

 Superorder, or embracing Order, a new name is required, and I 

 would suggest Thrrapsi'la. The mammal-like reptiles would then 

 be grouped as follows : 

 Class— REPTILIA :— 



Phylum— Synapsida. 



Superorder — Therapsida. 



Order I. — Therocephalia. 



Order II, — Dinocephalia. 



Order III. — A nomodoiitia. 



Order IV. — Cynodontia. 



Preliminarj' notice of some new fossil Reptiles collected hy 

 Mr. Alfred Brown at Aliwal North, S. Africa. By 

 R. Bboom, M.D. 



Though already a very considerable number of new fossil 

 reptiles have been described from Mr. Brown's museum, the 

 collection which represents the industry of over forty years is so 

 extensive that, though it has been looked over by both Seeley and 

 myself, much that is new still remains to be described. Compared 

 with many parts of Cape Colony, the Aliwal district is compara- 

 tively poor in fossil remains, and detached bones constitute by far 

 the larger proportion of the finds. In the meantime it is impossible 

 to do m.uch with the ver^' large collection of isolated vertebras and 

 other bones of the postcranial skeleton, but there are clear 

 evidences of many new and interesting forms among the jaws 

 and imperfect skulls. In a recent examination of the collection I 

 came across the following new reptiles, of some of which a more 

 detailed account with figures will be published latei-.- 



