PATAGONIAN EXPEDITIONS: PALEONTOLOGY. 



EXPLANATION OF PLATE XVII. 



PAGE 



Fig. I . Theosodon garrettorum, type : Skull, from the right side, X a"- 



(No. 15,164.) . . . . 113 

 Fig. la. " " " Skull, base view, X 2- (No. 15,- 



164.) 

 Fig. 16. " " " Skull, top view, X h (No- 15.- 



164.) 

 Fig. 2. - " . " " Stylohyal of right side, Xt- (No. 



15.164.) 118 



Fig. 3. Theosodon LYDEKKERi : Right upper milk-teeth, X t- (No. 15,717. 



mi first molar, with valley between 

 internal cusps partly closed.) . . . in 

 Fig. 3(3:. " " Left upper first molar, X l • (No. 15,717, 



with inner valley completely closed.) . 109 



Fig. 4. Thesodon lallemanti : Right upper teeth of young animal, X h 



(No. 15,539. /^ last premolar, »«- last 



molar.) 145 



Fig. 5. Theosodon garrettorum, type : First thoracic vertebra, from the 



right side, Xi- (No. 15,164.) . . 124 



(vol. VII.) 



