210 FAUNA ANTIQUA SIVALENSIS. 



Engineers, belongs now to tlie Museum of Marischal College, 

 Aberdeen, the authorities of which University with the most 

 prompt liberality forwarded it to London for comparison and 

 description, on the application of Major Cautley and myself 

 to that effect. It was found embedded in a yellow clay 

 matrix, being in the mineral condition, which we have else- 

 where designated as ' soft fossil.' (Geological Proceedings, 

 loc. cit. p. 235.) The head when discovered in situ appears 

 to have been in the most complete state of integrity, judging 

 from the undisturbed condition of the parts now remaining, 

 and to have been broken during the process of excavation by 

 the native collectors employed for the purpose. In con- 

 sequence of this unlucky accident, we are for the present 

 deprived of the important information which the specimen 

 would otherwise have yielded, regarding the construction and 

 relations of the cranium proper of Chalicotherium. 



The specimen next in importance is a fragment comprismg 

 the left half of the lower jaw, from the angle on to the com- 

 mencement of the symphysis, of an individual which was not 

 quite full grown. It supplies the character of nearly the 

 whole of the inferior molar series. It is in the mineral con- 

 dition which we have called 'hard fossil' (Proceedings, loc. cit.), 

 having been embedded in a sandstone matrix. This specimen 

 was forwarded durmg last May to Paris for examination and 

 comj)arison by M. LaurUlard, in the hope that it might 

 be matched by some remains in the French palaeontological . 

 collections ; and I am indebted to that excellent observer, 

 and to M. Pomel, through the kindness of Sir Roderick 

 Murchison, for opinions respecting it which I shall have 

 occasion to refer to in the sequel (Plate XYII. figs. 6 and 7). 



The detailed description of the teeth given in our first memoir 

 was published in an abbreviated form in the ' Proceedings,' 

 the abstract not having been the production of the authors. 

 Although correct in the main points, the descriptive minutiae 

 — a matter of prime importance where teeth are concerned — 

 were so abridged in the abstract, that I deem it necessary on 

 the present occasion to claim the indulgence of the Society 

 for redescribing the teeth, more especially with reference to 

 the new light which the specimens since acquired have re- 

 fl.ected on the dental characters of Chalicotherium. 



Incisors. — First with regard to the incisors. There were 

 NO incisive teeth to Chalicotherium Sivalense in either jaw ! 

 It was as toothless in this respect as the most typical among 

 the Edentata. The evidence is happily of the most demon- 

 strative character. The intermaxillary bones are preserved 

 in the upper jaw of the Dadoopoor specimen (fig, 3), perfect 

 to their tips. They consist of narrow slender slips of bone 



