PLATE III. 



5 a. 

 5 b. 

 0. 



Tiiconodon mordax. 



7 a. 



8. 



Fig. 



1. Sli/lodon robustiis. Left mandibular ramus; nat. size. 



1 A. ,, „ lb. ; magn. 3 diam. 



2. „ jmsillus. Portion of left mandibular ramus, and teeth; nat. size. 



2 a. „ „ lb. ; magn. 3 diam. 



3. ,, „ Left mandibular ramus ; nat. size. 



3 a. ,, ,, lb. ; magn, 3 diam. 



4. Leptodadus duhms. Left mandibular ramus ; nat. size. 



5. Bolodon crassidens. Right maxilla ; nat. size. 

 lb. ; magn. 3 diam. 



Working surface of upper molars ; magn. 3 diam. 

 Portion of upper jaw and palate ; nat. size : a, two left up])er 



molars: b, three right upper molars; magn. 3 diam. 

 Left mandibular ramus ; nat. size, 

 lb. ; magn. 2 diam. 

 Portion of left mandibular ramus; nat. size: a, molar tooth; 



magn. 3 diam. 

 Portion of right mandibular ramus ; nat. size : a, molar tooth ; 



magn. 3 diam. 

 Left mandibular ramus; nat. size; a, teeth, magn. 3 diam. 



lb.. A, third molar; magn. 3 



diam.: b, broken angle of the jaw ; magn. 3 diam. 

 Left mandibular ramus ; nat. size. 

 Hind part of left mandibular ramus ; nat. size. 

 Portion of right mandibular ramus; nat. size. 

 Worn molar; magn. 3 diam.: b, premolar; magn. 3 diam. 

 Portion of right mandibular ramus; nat. size. 

 lb. ; magn. 3 diam. 

 Left mandibular ramus ; nat. size. 

 lb.; magn. 3 diam. 

 Portion of right maxilla ; nat. size. 

 lb. ; magn. 3 diam. 

 Portion of left maxilla ; nat. size. 

 lb. ; magn. 3 diam. 

 lb. ; working surface of premolar and molar teeth ; magn. 



3 diam. 

 Fragment of right mandibular ramus; nat. size. 

 lb. ; magn. 3 diam. 



Lnpression of left mandibular ramus: a, canine ; magn. 3 diam. 

 Portion of right mandibular ramus ; nat. size. 

 From the fresh-water mamuialiferous marl-beds of the Middle Purbeck, Durdlestoue 

 Bay, Dorsetshire. In the Collection of Samuel Husbands Beckles, Esq., F.R.S., 

 St. Leonard's-on-Sea. 



