498 PROFESSOR OWEN ON THE SPECIES OF PHASCOLOMYS. 
DESCRIPTION OF THE PLATES. 
PLATE LXIX. 
Fig. 1. Front view of atlas vertebra, Phascolomys latifrons. 
Fig. 2. Back view of atlas vertebra, Phascolomys latifrons. 
Fig. 3. Front view of atlas vertebra, Phascolomys platyrhinus. 
Fig. 4. Back view of atlas vertebra, Phascolomys platyrhinus. 
Fig. 95. Side view of second to sixth cervical vertebre, Phascolomys latifrons. 
Fig. 6. Side view of seventh cervical and first three dorsal vertebre of Phascolomys 
latifrons. 
. Side view of left first rib of Phascolomys latifrons; 7a', articular surface of 
‘head ;’ 7d’, articular surface of ‘ tubercle,’ of ditto, Phascolomys latifrons. 
Fig. 8. Side view of left third rib; 80’, articular surface of tubercle, Phascolonys 
latifrons. 
Fig. 9. Side view of right fifth rib; 9', front view of distal end of ditto, Phascolomys 
latifrons. 
Fig. 10, Side view of left last (free or dorsal) rib, Phascolomys latifrons. 
Fig. 11. Front or outer view of sternum, Phascolomys latifrons. 
Fig. lla. Side view of distal end, with parts of attached rib and xiphoid sterneber, 
Phascolomys latifrons. 
Fig. 12. Under view of right clavicle, Phascolomys latifrons. 
Fig. 13. Under view of right clavicle, Phascolomys platyrhinus. 
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PLATE LXX. 
Fig. 1. Under or inner view of sacrum and anterior caudal vertebrae, Phascolomys 
latifrons. 
Fig. 2. Articular surface for ilium on the first two sacral vertebre, Phascolomys 
latifrons. 
Fig. 3. Under or inner view of sacrum and anterior caudal vertebre, Phascolomys 
platyrhinus. 
Fig. 4. Articular surface for ilium on the first two sacral vertebre, Phascolomys 
platyrhinus. 
Fig. 5. Dorsal or anconal view of the bones of the right fore paw, Phascolomys lati- 
Frons. 
Fig. 6. Thenal view of phalanges and sesamoid of fourth digit, Phascolomys latifrons. 
7. Side view of ungual phalanx of third digit, Phascolomys latifrons. 
Fig. 8. Dorsal or upper view of the bones of the right hind foot, Phascolomys lati- 
Srons. 
