Page:Journal of the Asiatic Society of Bengal Vol 7, Part 2.djvu/528

IOU.] On the ngbtnde th.anteriorcheektoothisbrokeninthesocket, aed..the second teeth in the sow presents two distinct crowns situated class together, but in the left aide in thu specimen as well as in a fragmeat of whiL is probably a corresponding species in the Asiatic Society. *e second cheek tooth presents a single large compressed crown; the thie next teeth ar. placed close together, and are perfectly distinct from each other, but from the meener in which dentition appears to take place 1. these animal. two points of the same tooth may be more or less distant freest each other, so theta corresponding tooth in different individuals may occasionally appear deubleor single according to circumstances, hit allowing the utmost latitude to variations of this kind, still we must regard the specimen in question from its breadth to characterise a dii.. tiuct species; more eq.chily as we find the following fragment in the Asiatic Society’, museum to corroborate all the essential peculiarities of this species Fig. 6 b. The fragment of a gigantie individual0, which presents a depth of six inches at the chiti, with a breadth of more than twelve inches, and corresponds with Dr. MACLOaD’S specimen fig. 6, so forcibly as not to be mistaken in the most minute particulu as having belonged to a larger individual of the same species; the second and third cheek teeth in this are still remaining en the right side as well as the sockets and alveolus of the incisors and canines. The importance of this specimen (of which I have given two figures 6 b. and 6 c. the latter being the under side), consists in its suggesting that a difference in the same species gives rise in these, as in other animals, to no difference in form, and consequently that a difference of form in the fragments of several species is to be regarded as a specific distinction. Before I became acquainted with this fact, and compared the specimens to which. I am indebted for a knowledge of it, I was disposed to think the following specimen probably belonged to a young Hex. Sivalsnsi.. Fig. 7 ii the corresponding portion of the lower jaw of a small specimen only seven anda half inches across the musale, and three and a half inches in depth. The narrowest part of the jaw behind the On a shelf in the north-western corner of the museum, along with the cervical vertcbrn, teeth, and other fragments of elephants and mastodons and numerou. broken tusk. of hippopotami without labels, or any indications of the place in which they were found, or who the donor, were, so that we are left to infer that they came from the SiwalAk beds, thouth in the same side of the apartment there are collections from Ave also without labels these have been destroyed by Insects, which seem to have recently taken advantage of the neglected state of this department of our museum.