Dr, C. J. F. Major on Fossil Quadrumana. 159 



tion given by Prof. Owen is arbitrary, the tooth in question 

 presenting- only insignificant differences in the genera Liuus, 

 Cercojyithecusj and Semnoj)itkecus*. Nevertheless, as this tooth 

 possesses the general form and the mode of wear which 

 cliaracterize Macacus and distinguish it from SeinnojyithecHs^ 

 I do not tliink that there is any reason to change the name 

 adopted by Owen into " Semnajjithecuspliocceiius'''' (Beyrich,/.c. 

 p. 24), and the less as the occurrence of the genus Macacus in 

 the fossil state is now placed beyond doubt. 



There is only a single point which leads to doubt in the 

 figure given by Prof. Owen, which shows the inner tubercles 

 of the teeth distinctly separated, in a manner such as I have 

 not met with in any of the living species of Macacus. Nor is 

 it a peculiarity of the Semnopitheci ; in the molars of both 

 these .genera the inner tubercles are united by well-marked 

 diagonal crests. 



The few isolated teeth which M. Gervais has described 

 under the name of Semnoj)itheciis monspessulanus were found 

 by him at Montpellier in the freshwater marls of the Pliocene 

 stage f. According to M. Gervais it is possible that Sentno- 

 pithecus mons2)essidanus is of the same species as the monkey 

 from the marine sands which M. de Christol has named 

 Pithecus maritimus\, comparing it especially to the genus 

 Cercojyithecus^ but without giving either a detailed description 

 or figure of it. 



From the same deposits, according to M. Gervais, are 

 derived a series of four right lower molars, two canines, and 

 one incisor, named by him Macacus jjrisctis^. 



Lastly, the Danish naturalist Lund found in the Brazilian 

 caves five sjjccies of platyrrhine monkeys, one of which, 

 ProtojntJiecus brasiliensis, found nearly at the same time 

 (July 1836) as the first remains of Quadrumana in Asia, sm*- 



Geol. Soc. vol. xxiii. 1867, p. 101, and vol. xxv. 1869, p. 199) of the fossil 

 Mammalia of these deposits at Gray's Thuirock, which are as follows : — 

 Felis sj)ela'us, F. catus, Ili/csna spelcea, Ursus P, U. urctos, Cimis lupun, C. 

 imlpes, Lvtra vnUjaris, Bos immigenius, JBisotipn'scus, Megaceros hihernicus, 

 Cervvs elaplius, Elcplias cuitiqtius, E. priscits, Goldf., E(p<HS fossilis, Owen, 

 Rhinoceros Iwmitaclius, Falc, R. nicf/arJimus, Christ. ( = Ii. hptorldnus, 

 Cuv.), Siis scrofa, Hippopotatnus major, Castor Jiher, Arvicola aniphibid. 

 We shall recur' hereafter to the question of the age of the brick-earths of 

 the A'alley of the Thames. 



* " lleber Senuiojnthecuspentelicus,'''' Abhandl. Akad. der Wiss. zu Berlin 

 aus d. .fahre 1860, p. 23 (1861 j. 



t P. Gervais, " Notesur une nouvelle espece de Singe fossile," Comptes 

 Rendus, tome xxviii. 1849, p. 699; and Zool. et Paleont. Franyaises, 

 2nd ed. 1859, p. 10. 



X ]>ull. Soc. Cfuol. do France, 2"-' ser. tome vi. p. 173. 



§ Zool. et Paleont. Frany. p. 11. 



