286 
PROFESSOR OWEN ON THE FOSSIL MAMMALS OF AUSTRALIA. 
Fig. 16. Back view of tlie molar (m 1 ), with part of the formative cavity of m 2 , 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, p 3, d 4, m 1, of ditto. 
PLATE XXV. 
Fig. 1. Outside view of portion of mandibular ramus, with the molar series, of a full- 
grown Protemnodon Anak. 
Fig. 2. Working-surface of the teeth of the same fossil. 
Fig. 3. Outside view of a larger portion of a 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 a mandibular ramus and molar series of a Protem- 
nodon 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. 
Fig. 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 3. 
Fig. 14. Hinder fractured surface of the mandibular ramus of Protemnodon Anak (fig. 3). 
PLATE XXVI. 
Fig. 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 ayoun g 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. 
Fig. 7. W T orking-surface of the first lower molar (mi) of the specimen, fig. 14, Plate 
XXIV., of a young Protemnodon Mimas. 
