SIWALIK AND NARBADA PROBOSCIDIA. 
89—270 
the Chinese tooth are likewise too high for Stegoclon homhifrons. Although it may 
not be a matter of complete certainty until we obtain the entire Chinese milk-molar, 
it appears to me that there is every probability that that tooth is really the second 
upper milk-molar of Stegodon insignis, and that the imperfect true Chinese molar 
referred by Professor Owen to his new species, S. orientalis, also belongs to 
S. insignis. 
Second lower milk-molar. — Of the second lower milk-molar of Stegodon in- 
signis, two imperfect specimens are represented in figs. 1 and 3 of Plate XX of the 
“ Pauna Antiqua Sivalensis their distinctive characters are not, however, very 
well displayed, neither is there any description of these teeth in the explanation of 
the plates. To give a good idea of this tooth, I have had drawn in fig. 2 of 
Plate XLVI, a very nearly perfect specimen from the collection of the Asiatic 
Society of Bengal, now in the Indian Museum. The tooth was determined by Dr. 
Palconer, and a short notice of it will he found on page 44 of his Catalogue of 
the Possil Vertehrata in the Museum of the Society. The specimen is implanted 
in a fragment of the left ramus of the mandible, and has been somewhat damaged 
anteriorly ; most of the ridges have been well worn, hut of the last only the summits 
of the cusps are touched by wear. The crown of the tooth is considerably narrower 
in front than behind, and carries five ridges (the anterior broken) and a small hind- 
talon. Relatively to the corresponding tooth of Stegodon homhifrons,, which has 
been already described, the ridges are high and slender ; there is a consideral)le 
quantity of cement in the intervening valleys, and the enamel is thrown into deep 
vertical groovings and puckerings. The last unworn ridge carries ten cusps. The 
length of this tooth is 2’7 inches, its greatest width 1’6 inches, and the height of 
its ridges 1 inch. The important points in which this tooth dilfers from the corres- 
ponding tooth of Stegodon homhifrons have been already sufficiently pointed out 
when describing the dentition of that species. 
Third upper milk-molar. — Of the third upper milk-molar of Stegodon insignis, 
specimens are figured in the “ Pauna Antiqua Sivalensis,” Plates XIX, figs. 2 and 3, 
and XIX A, fig. 1, which show that this tooth carried seven ridges and small fore- 
and-aft talons. The very perfect tooth of a Stegodon represented in Plate XLV, 
fig. 4, of the present memoir agrees with the last-mentioned specimens in tlie 
characters referred to, and as its other characters are also those of the molars of 
S. insignis, it has been classed as the third upper milk-molar of that species. The 
tooth was collected by Mr. Theobald in the Siwaliks of the Punjab : only its two 
first ridges have been affected by attrition, but portions of the summits of most of 
the others have unfortunately been broken away. The tooth is narrower in front 
than behind, and, as before indicated, carries seven ridges,^ and very small fore-and- 
' The last ridge is smaller than the others, and might he reckoned as a talon, hut that it carries a still smaller ridge 
behind. This last ridge is evidently a talon in process of passing into a true ridge. The hind-talon in the tooth drawn 
in fig. 1 of the same plate will he seen to be relatively shorter in proportion to the true ridges, and is evidently only 
a large talon. It will, of course, be seen that the distinction is really an arbitrary one. 
