190—36 INDIAN TERTIARY AND POST-TERTIARY VERTEBRATA. 
skull of tlie living species in the following words, vis .: — “ Edge of the beaks very 
strongly dentated ; the upper with a notch, with a ‘ tooth ’ on each side of it. 
The skull solid with the alveolar process very wide ; the upper Jaw with a slightly 
elevated, narrow, dentated [palatal] ridge, separated in front by a large deep pit, 
which has a sharp-edged longitudinal keel behind it.” This description applies 
exactly to the fossil : — the strongly serrated alveolar margin of the maxilla is well 
exhibited on the left side, and both sides show the prominent premaxillary process 
described by Gray as a tooth, with the intervening median notch. The palatal 
ridge, although somewhat abraded, is still distinctly seen, and the median pit, nearly 
filled with matrix, can be easily distinguished : the longitudinal ridge behind the pit 
has, however, been broken away. In general contour the fossil and recent crania 
agree very closely, but the orbit of the former is more elliptical than that of the 
latter. 
Bearing in mind the close resemblance presented by the shell of Batagur falconer i 
to that of B. tlmrgi there is a very strong presumption that the fossil cranium belongs 
to the former sj^ecies ; and in any case it indicates a closely allied form. The 
cranium is of relatively large size, and may have belonged to a somewhat larger 
individual than the type shell of B. falconeri. Its length from the occipital condyle 
to the extremity of the premaxilla is 4'2, and the width between the external surfaces 
of the quadrates 3-8 inches. 
Distribution . — Assuming that at least one of the two Punjab specimens described 
above belongs to B. falconeri the range of that species extended from the typical 
Siwalik Hills (Ganges-Jamna basin) to the Punjab (Indus basin). The existing B. 
thurgi is likewise found in both these basins.^ 
Species 2. Batagur bakeri, n. sp. nobis. 
(Allied to Batagur Jcachuga [Gray.]) 
Shell . — A second species of Siwalik Batagur is indicated by a fairly complete 
shell presented to the British Museum by the late General Sir W. E. Baker, which is 
represented of oneYourth the natural size in plate XXIII. figs. 2. 2a., and pi. XXIV. 
fig. 5. The carapace is broken off across the 4th vertebral plate : it exhibits the 
boundaries of the vertebral and costal plates as far back as the hinder part of the 
4th vertebral, and also shows the sutures of the vertebral scutes, the condition of 
these sutures indicating an adult individual. The plastron is perfect as far back as 
the border of the preanal plates, and shows the boundaries between all the plates in 
advance of this point. 
The specimen is nearly of the same size as the type shell of B. falconeri (fig. 1), 
and as there is a very important structural difference between the two it will be well 
to indicate this before proceeding to the more detailed description. It will be 
remembered that in the former species the space enclosed by the boundaries of the 
1 Vide Theobald, “ Catalogue of Reptiles of British India,” p. 24. 
