PROFESSOR OWEN ON THE FOSSIL MAMMALS OF AUSTRALIA. 
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PLATE XVIII. 
Fig. 1. Palatal surface and upper molars, Phascolomys Mitchelli. 
Fig. 2. Side view of the same portion of skull. 
Fig. 3. Front view of the same portion of skull. 
Fig. 4. Back view of the same portion of skull. 
Fig. 5. Side view of the left maxillary, Phascolomys Mitchelli. 
Fig. 6. Front view of the same portion of skull. 
Fig. 7. Palatal surface and molar teeth of ditto. 
Fig. 8. Outside view of right mandibular ramus of Phascolomys Thomsoni. 
Fig. 9. Upper view with grinding-surface of lower molars of the same fossil. 
PLATE XIX. 
Fig. 1. Upper view of mandible and mandibular teeth, Phascolomys vombatus. 
Fig. 2. Upper view of mandible and mandibular teeth, Phascolomys platyrhinus. 
Fig. 3. Upper view of a portion of the left mandibular ramus with the last two molars, 
Phascolomys Krefftii. 
Fig. 4. Upper view of a portion of the right mandibular ramus, Phascolomys latifrons. 
Fig. 5. Upper view of a portion of the left mandibular ramus, Phascolomys Mitchelli. 
Fig. 6. Upper view of a portion of the left mandibular ramus, Phascolomys parvus. 
Fig. 7. Outer side view of the same fossil. 
PLATE XX. 
Upper view of mandible and mandibular teeth, Phascolomys latifrons. 
Upper view of the fore part of the mandible, Phascolomys Krefftii : 2 a, trans- 
verse section of the incisors. 
Upper view of a portion of the mandible of Phascolomys platyrhinus. 
Under view of the same fossil : 4 a , transverse section of the incisors. 
Side view of fore part of the same jaw. 
Outer side view of the left mandibular ramus, Phascolomys parvus. 
Inner side view of the same fossil. 
Under surface of angular part of the same fossil. 
PLATE XXI. 
Fig. 1. Inner side view of the right mandibular ramus, Phascolomys vombatus. 
Fig. 2. Inner side view of the right mandibular ramus, Phascolomys platyrhinus. 
Fig. 3. Inner side view of the right mandibular ramus, Phascolomys latifrons. 
Fig. 4. Inner side view of a portion of the right mandibular ramus, Phascolomys lati- 
frons. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Fig. 8. 
