SIWALIK AND NARBADA PROBOSCIDIA. 
69—250 
mandible of calves represented in figs. 1 and 2 of Plate XXXVII of the “ Pauna 
Antiqua Sivalensis.” In both these specimens the crown of the tooth has been 
hammered off. The length of the more perfect tooth is 0*6 inch, and its greatest 
width 0*4 inch. 
Second uppermilJc-molar. — Two specimens of the second upper milk-molar of 
M. sivalensis are represented in figs. 1 and 2 of Plate XXXVI of the “ Pauna 
Antiqua Sivalensis.” The first of these specimens is detached, the second is in a 
fragment of the maxilla, which also contains the third milk-molar. The second 
milk-molar seems to be somewhat oval-shaped, and carries three ridges, the hind- 
most of which is shorter than the others. The length of this tooth is 2’ 6 inches, 
and its greatest width 1‘8 inches. 
Second lower milk-molar. — Each of the two fragmentary mandibles referred to 
above as containing the first milk-molar, also contains a succeeding tooth, which 
must accordingly be the second milk- molar. This tooth, like the corresponding 
upper tooth, carries three transverse ridges, and has a length of 1-9 inches and a 
width of 1*2 inches. These dimensions are slightly smaller than those of the 
corresponding upper milk-molars, both of which, as we shall see below, probably 
belonged to male animals. 
Third upper milk-molar. — A specimen of the third upper milk-molar is re- 
presented in fig. 2 of Plate XXXVI of the “ Pauna Antiqua Sivalensis.” This 
tooth carries four ridges with alternately arranged columns, and has a length of 
4 inches and a width of 2’3 inches. This tooth, as far as regards form, agrees 
exactly with the smaller specimen represented in fig. 2 of Plate XLI of this 
memoir. The latter specimen was transferred from the collection of the Asiatic 
Society of Bengal to the Indian Museum, and is described on page 38 of the Catalogue 
of the Possil Vertebrata in the Society’s collection by Dr. Palconer as follows : — 
“ Pine specimen of the upper maxilla, left side, comprising the greater portion 
of the palate and two molars embedded in the jaw, with four empty pits, marking the 
situation of the fangs of the second milk-molar, which had fallen out. The 
third milk-molar (figured tooth) is shown nearly entire with the enamel (of the) 
crown broken off at the outside of the first two ridges ; the first three ridges are 
seen to be touched with wear, forming depressed cups. The crown of the tooth is 
bisected longitudinally into an outer and inner division, and the groups of mammillse 
are seen to alternate with accessory mammillse in the valleys. The surface of the 
enamel is deeply grooved vertically, so that the ridges when worn present a very 
complex pattern. Behind the fourth ridge is a talon consisting of a complicated 
group of small mammillse. The four empty fang cavities in front are (arranged so 
as to form) nearly a square, showing that the crown of the tooth had a similar 
form.” 
The length of the third upper milk-molar is 3'2 inches and its greatest width 
2 inches. The alveolar space of the second milk-molar occupies a square of about 
1-3 inches in diameter. 
