23 



Procavia bettoni, sp. n. 



Allied to F. stuhlmanni Matsch., but darker coloured, the 

 general colour above drab-brown, washed with a warmer tone 

 along the back. Skull markedly smaller than in P. stichlmanni. 



Dimensions of the typical skull, in Stage Y. : — Greatest length 

 81 mm.; basal length 75-5; combined lengths of four premolars 

 and two anterior molars 26* 7. 



Sab. Rogoro, Kikuyu. 



Tijpe. Male. B.M. No. 0.1.3.5. 



Mr. F. E. Beddard, F.R.S., read a second of a series of papers 

 entitled " Contributions to the Anatomy of the Lacertilia," based 

 on observations he had made in the Society's Prosectorium. The 

 present part dealt with some points in the structure of the 

 Teguexin (^Titpinamhis), 



Mr. G. A. BouLENGER, F.R.S., gave an account of the Triassic 

 Reptile Telerpeton elginense, based on new material recently 

 procured at Loosiemouth by Mr. William Taylor. A study of the 

 new specimens, and a re-examination of those previously described, 

 showed Telerpeton to be related to Procolophon and Diadectes^ 

 and therefore to be referable to the Order Cotylosauria of Cope, 

 which the author proposed to keep distinct from the Pariosauria 

 and Anomodontia. Remarks were added on the classification of 

 the Reptilia in two diphyletic series — Theromora and Herpeto- 

 morpha ; the former including the Pariosauria, Cotylosauria, and 

 Anomodontia, the latter all other orders. 



A communication from Mr. Herbert Druce, V.P.Z.S., con- 

 tained descriptions of twenty-three new species of Butterflies, 

 belonging to the family Erycinidce, from Tropical South America. 



Dr. A. SnrrH Woodward, F.R.S., communicated a paper by 

 Dr. Robert Broom, C.M.Z.S., on the Theriodont mandible and 

 its mode of articulation with the skull. It contained an account 

 of the structure of the mandible in Cynognatlnis, Gomphognathus, 

 and Tr'irachodon, and the author showed that the jaw was formed 

 mainly by the dentaiy bone, while the articulation Avas formed 

 entirely by the articular. A distinct splenial, angular, and sur- 

 angular were recognised. The quadrate was a flat bone lying in 

 fi-ont of the lower part of the squamosal and also covering its 

 lower edge. Lying directly inwards from the quadrate was a bone 

 which was believed to be the tympanic. 



Dr. Broom believed that the mammalian jaw was derived from 

 that of the Theriodont by the dentary forming the articulation 

 and the articidar becoming degenerate and the small membrane- 

 bones lost. The malleus was believed to be the hyomandibular, 

 and that part of IMeckel's cai'tilage in the neighbourhood of the 



