INDIAN TEETIART & POST - TERTIARY VERTEBRATA. 
RODENTS & NEW RUMINANTS FROM THE SIWALIKS, 
AND 
SYNOPSIS OF MAMMALIA. 
By E. LYDEKKEE, B.A., F.G.S., F.Z.S. 
(WITH PLATE XIII.) 
Order: EODENTIA. 
Uarltij of remains. — The remains of rodents from the Indian tertiaries are of 
rare occurrence ; this being probably due to the small size of most members 
of the order. No remains of rodents are figured in the “ F.A.S.;” neither were any 
described by Falconer, although more than one genus was known to him from the 
Siwaliks. A species of Siphneus fS. arvicolinusj has recently been described by 
Herr Nehring' from the deposits of the upper Hwangho river in China, which 
probably correspond either to the Siwaliks or Narbadas.^ The living species of that 
genus occur in North China and the Altai ; and the fossil form is said to connect 
the living species with Arvicola. 
SuB-OkDER : SiMPLICIDENTATA. 
Family I : MURIDS. 
In a memoir by the late Gen. Sir W. E. Baker, ^ it is stated that remains of 
Mus had been obtained from the Siwaliks ; and the same statement is made in 
Falconer’s notes.'‘ In the Indian Museum there is a fragment of breccia from the 
Narbadas containing the incisors of a murine rodent, of which the generic deter- 
minatioD seems impossible. 
1 “ Sitz. Ges. nat. Freimde, Berlin.” 1883. p. 19 
2 Vide supra, vol. II. p. 289. 
3 “ On the Fossil Remains presented to the Museum at Ludlow ” (Ludlow, 1850) p. 10. 
4 ” Palmontological Memoirs,” vol. I., p. 23. See also ‘ Journ. As. Soc. Beng.’ vol. IV., p. 706; V., p. 290. 
A 
