646 SCIENCE PROGRESS 



be made first to one in the Bull. Amer. Mus. Nat. Hist. (vol. 

 xxxii. pp. 441-57) in which are described a number of remains 

 of dicynodonts ; many of these being regarded as representing 

 new species of the typical Dicynodon, while others are assigned 

 to new genera. It is interesting to note that a skull described 

 by Huxley as that of a lizard, under the name of Pristerodon 

 mackayi, really represents a dicynodont with cheek-teeth. 

 Two other new species of Dicynodon are described by Messrs. 

 Broom and Haughton in vol. xii. pp. 36-9 of the Annals of the 

 South African Museum. 



In the first of three papers by Dr. Broom in part 6 of the 

 viith of the serial just quoted x it is shown that while in 

 Pariasaurus the digital formula is 2.3.3.4.3, in the allied 

 Propappus it is probably 2.3.4.5.3, thus affording another point 

 of distinction between them. In the second he describes, as 

 Noteosaurus africanus, a new genus allied to Mesosaurus, of 

 which three of the known species are South African, while the 

 fourth is Brazilian. The third paper contains a systematic 

 list of the early Mesozoic reptiles of South Africa, which, apart 

 from dinosaurs, crocodiles, rhynchocephalians, etc., are arranged 

 in no fewer than nine ordinal groups, brigaded in three so-called 

 superorders. 



In vol. xii. of the Annals of the South African Museum 

 (pp. 17-24) Messrs. Broom and Haughton describe the im- 

 perfect skeleton of a new generic type of pariasaurian from 

 Beaufort West, under the name of Pareiasuchus peringueyi. 

 One of the points of difference from the typical genus consists 

 in the larger size of the temporal roof of the skull, which 

 descends below the quadrate, in a manner also found in the 

 Russian pariasaurians, which may, however, represent another 

 genus. In the same issue (pp. 43-5) Mr. H. S. Haughton 

 describes a new species of the allied genus Propappus ; while 

 he also communicates {op. cit. pp. 40-42) a note on a very fine 

 skull of the gigantic Tapinocephalus atherstonei from Beaufort 

 West, the locality of the type specimen described by Sir 

 Richard Owen. 



If his conclusions are well founded, Dr. Broom, in 2. paper 

 published in the Bulletin of the American Museum of Natural 

 History (vol. xxxii. pp. 465-6), adduces an important piece 



1 It may be well to mention that instalments of vii. and ot vol. xii. of this 

 serial were published during the year. 



