PHYLOGENY OF THE PAL^EOGNATILE AND NEOGNATH.E. 285 



PLATE XXXVIII. 



Casuarius lorice. Loria's Cassowary (p. 142). (Drawn from a sketch made from 

 a fresh-killed bird by Dr. Loria.) 



PLATE XXXIX. 



Casuarius bennetti. Bennett's Cassowary (p. 145). (Drawn from life from a bird 

 formerly at Tring, now in the Zoological Society's Gardens.) 



PLATE XL. 



Map showing the geographical distribution of the six subspecies of Casuarius 

 casuarius and of Casuarius bicarunculatus. 



PLATE XLI. 



Map showing the geographical distribution of the three subspecies of Casuarius 

 unappendiculatus, two of Casuarius papuanus, two of Casuarius picticollis, Casuarius 

 lorice, and Casuarius bennetti. 



PLATE XLII. 



The dorsal aspect of the Skull (figs. 1-4). 



Fig. 1. The skull of Rhea americana (p. 270), to show the form of the temporal fossa, 

 the partly fused mesethmoid plate, the form of the lachrymals and nasals, 

 and the broad nasal process of the premaxilla. 



Fig. 2. The skull of Dromceus novce-hollandice (p. 270), showing the rod-like nasal 

 process of the premaxilla, the fused lachrymal, broad interorbital region, and 

 widely separated temporal fossae. 



Fig. 3. The skull of Struthio molyldophanes (p. 269), showing the supra-orbital ossicles 

 running backwards from the lachrymal to the frontal, and the broad nasal 

 process of the premaxilla. The mesethmoidal suture is obliterated. 



Fig. 4. The skull of Apteryx australis (p. 269), showing the small size of the lachrymal 

 and the absence of its supra-orbital processes, the complete fusion of the 

 nasal process of the premaxilla, and the rounded form of the frontals, which 

 do not protect the orbit above. 



Ventral aspects (figs. 5-8) 



Fig. 5. The ventral aspect of fig. 1, showing the large size of the palatine 

 processes of the premaxilla and of the maxillo-palatine processes. The 

 peculiar relations between the vomer, palatine, and pterygoid (described on 

 p. 207), and the anterior end of the parasphenoidal rostrum between the 

 anterior cleft of the vomer. 

 vol. xv. — paet v. No. 23. — December, 1900. 2 s. 



