476 



Fig. 10. Back view of the molar (m 1), with part of the formative cavity of ni2, of the 

 same fossil. 



Fig. 17. Inner side view of fore part of the mandibular ramus of an Osphranter Cooperi. 

 Fig. 18. Outer side view of the three molars,^) 3, d 4, m i, of ditto. 



PLATE LXXXV. 



Fig. 1. Outside view of portion of the right mandibular ramus, with the molar series, 



of a full-grown Protemnodon Andk. 

 Fig. 2. Working-surface of the teeth of the same fossil. 



Fig. 3. Outside view of a larger portion of the left mandibular ramus, with the molar 



series, of Protemnodon Anak. 

 Fig. 4. Working-surface of the two hindmost molars of the same fossil. 

 Fig. 5. Outside view of a portion of the left mandibular ramus and molar series of a 



Protemnodon Og. 

 Fig. 6. Working-surface of the teeth of the same fossil. 



Fig. 7. Outside view of a left mandibular ramus, nearly entire, with incisor and molar 



teeth, of Protemnodon Anak. 

 Fig. 8. Inside view of a left mandibular ramus, nearly entire, with incisor and molar 



teeth, of Protemnodon Anak. 

 Fig. 9. Working-surface of the molar series of the same fossil. 

 F'ig. 10. Upper view of symphysial part, with the incisor, of the same fossil. 

 Fig. 11. Outside view of a portion of mandible, with last two molars, of Protemnodon 



Og. 



Fig. 12. Inside view of a portion of mandible, with last two molars, of Protemnodon Og. 

 Fig. 13. Working-surface of the two molars, m 2, m s. 



Fig. 14. Hinder fractured surface of the mandibular ramus of Protemnodon Anak (fig. 3). 



PLATE LXXXVI. 



F'ig. 1. Outside view of part of left mandibular ramus, with the molar series, of a mature 

 Protemnodon Mimas. 



Fig. 2. Inside view of part of left mandibular ramus, with the molar series, of a mature 



Protemnodon Mimas. 

 Fig. 3. Working-surface of the teeth of the same fossil. 



Fig. 4. Inside view of part of the left mandibular ramus of a young Protemnodon 

 Mimas. 



Fig. 5 , Outside view of the same fossil, with the premolar (p 3) exposed in its formative 

 cavity. 



Fig. 6. Working-surface of the molars preserved in the same fossil. 



