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has been rubbed off. The foramen magnum is rather smaller, especially across, than 
in Dinornis giganteus or D. robustus ; it resembles in shape that of the specimen of the 
latter species from the limestone fissure at Timaru, figured in Pl. L.XTT. fig. 2,0. The 
foramen has been overtopped, not by so sharp or narrow a penthouse as in Dinornis 
robustus, but by a thicker prominence of the combined ex- and super-occipitals, like that 
in Casuarinus, in Dromaius, and in Dinornis gravis. 'The abrasion of this part, and of 
the arc thence curving down to each paroccipital, exposes the diploé at many parts; 
where the outer table remains it shows the arched ridge to be broader and more 
smoothly rounded than in Dinornis robustus, more like that in Dinornis elephantopus : 
but the descending curve is less, the arch is wider, spanning more transversely to the 
paroccipitals: in the degree of transverse and vertical concavity of the area below the 
exoccipital arch Dasornis resembles Dinornis robustus rather than Dinornis elephantopus, 
in which the area is more depressed, ‘The vagal foramina in this area, of which the 
right is plainly recognizable, open rather nearer the condyle than in Dinornis. In a 
direct upper view the condyle is visible, as in Dinornis struthoides and D. dromioides. 
It is plain from what remains of the basi-occipital tuberosities that they were developed 
from a tract not descending below the condyle in a degree beyond that in Dromaius: 
otherwise they resemble those protuberances in Dinornis in size and position. The super. 
occipital surface inclines from below forward in a degree as great as in D. struthoides and 
D. dromioides—consequently more so than in the larger Moas, much more so than in any 
of the existing Struthionide, or in any aquatic or other known living bird, 
Notwithstanding the degree of abrasion of the transverse superoccipital ridge, there 
is evidence of the two outer and larger curves, convex forward, continued as in Dinornis 
struthoides to the paroccipital ridges. ‘These were inclined backward, as in Thea and 
Dinornis; but to what degree, or how far the ridges descended, the broken specimen 
gives no information. 
Against an indication of a short pterapophysis, on the right side, part of what is 
plainly a pterygoid abuts by its hinder end; this lamelliform bone extends oe a 
as in Rhea, slightly outward, and joins a similar fragment of a SNe i re 
which has been pressed upward into the orbit, above the level of the eae 
rostrum Of this rostrum, a length of nearly two inches is continued forwar om = 
basisphenoid ; its wide-celled pneumatic structure is exposed, as one sees es suai oe 
abraded Dinornis-skulls. To the left of the anterior broken end of the re on 
same relative position as in Dinornis robustus, is a portion at i yearns i ‘palatal 
palatal plate of the premaxillary ; and suturally connecte ae ae 
Process of the maxillary, fractured across where it was contracting and t ° 
jo the palatine bone. ; , 
On the left side of the cranium, part of the smooth upper eee enees Cea 
* process arching downward, which I regard as homologous wl P 
bro i el verse 
1 i WwW - - breadth of 5 lines, a trans 
Dinornis ; the roken termination shows a fore-and aft 


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