222 



FAUNA ANTIQUA SIYALENSIS. 



APPENDIX TO MEMOIE ON CHALICOTHERIUM. 

 Extracts from Dr. Falconer's Note-books. 



Darmstadt Museum: September 4, 1856. 



Examined a beautiful specimen, hitherto imfigured, of the left upper 

 jaw of Chalicotherhnn Goldfussi, nearly in every way the counterpart 

 of our Sewalik specimen figured in the Geological Proceedings (PI. XVII. 

 figs. 1 and 2). It comprises the same width of palate, the same height 

 of mutilated maxillary, and the same number of teeth ; but older, i.e. 

 in more advanced detrition ; the correspondence in every general re- 

 spect is very remarkable. The specimen contains six molar teeth iii 

 continuous line, i.e. 3 premolars + 3 molars. 



The antepenultimate premolar (first) is exceedingly like the Sewalik 

 figure, being small, nearly triangular, with a main (outer) pointed cusp, 

 which is worn down as in the Sewalik specimen, with the small insular 

 detached interior cusp (placed at the posterior end developed into a 

 lobe), continued forwards in a basal bourrelet, which terminates 

 anteriorly in a small lobule, as in the SeAvalik figure. This tooth is 

 proportionally much less worn than the three next, which are grotmd 

 down so as to involve the insular cusp in one common disc (i.e. very 

 much worn). The penultimate true molar is less worn, having the cup 

 of the insular disc untouched. The cusp of the last molar is perfectly 

 intact, but the outer main ridges (the chevrons) are well worn. 



The two last molars are, as in the Sewalik specimen, nearly of a size; 

 the teeth then diminish most rapidly in front with the anisodon cha- 

 racters. 



The others diminish very rapidly from the second true molar. The 

 three anterior premolars very much compressed, i.e. broader than long ; 

 the first nearly triangular. 



Lengtli of series of 6 molars 7 



Ditto 3 true molars ........ 5 



Ditto 3 premolars ........ 2 



< Lengtli of last true molar 1 



J Width of ditto 



j Length of penultimate molar ...... 



(Width of ditto 



! Length of antepenultimate ...... 

 Width of ditto 



S Length of last premolar ...... 

 Width of ditto 



! Length of 2nd premolar ...... 

 Width of ditto 



Length of 1st premolar . . . . . . . . 



Width of ditto 



N.B. Inches taken roughly with tape. 



Inches 

 •1 



•0 



■18 



■9 



•9 



■7 



•9 



■3 



•45 



•8 



■2 



•7 



•9 



•7 



•7 



Mfetre 



•18 



•124 



•055 



•048 



•048 



•042 



•047 



•032 



•035 



•020 



•028 



•016 



■022 



•017 



•017 



Memo. — The anterior {antepenultimate, or first) premolar is distinctly 

 tico-fanged, and the fangs are more divergent on the inside than on the 

 outer. 



