HuTTON. — On the Moas of the North Island. 553 



Mid. 

 Width. 



Distal 

 Width. 



Metatarsus 



Tibia 



Femur 



155mm. 

 368mm. 

 213mm. 



54mm. 



100mm. 



TGrnm. 



32mm. 

 32mm. 

 33mm. 



GSmm. 

 53mm. 

 81mm. 



This metatarsus and femur are from Wangauui ; the tibia 

 from Akitio, on the east coast of Wellington Province. 



The bones resemble those of E. crassa, but the tibia is 

 more convex on the anterior surface. 



The skull (Plate XLVIIL, fig. C) resembles that of E. 

 crassa in miniature, but with some differences. The occipital 

 condyle does not project beyond the par-occipital processes. 

 The plane of the occipital foramen is inclined backwards. The 

 occipital crest, the lambdoidal and posterior lambdoidal ridges, 

 the supra-foraminal ridges, and the par-occipital processes are 

 like those of E. crassa. The cranial roof is much vaulted, 

 ■evenly arched from side to side, and with only a slight frontal 

 rising, such as is conspicuous in other species of Euryapteryx. 

 Also, the flat area betvv'een the temporal and lambdoidal ridges 

 is narrower than in other species. The margin of the orbit is 

 evenly curved. The basi-occipital is shorter than in E. crassa, 

 and the mammillar tuberosities are but slightly developed ; 

 the basi-pterygoid processes are broad. 



The rostrum, maxillo-jugal arch, palatines, and pterygoids 

 are missing. 



The tympanic cavity is as in E. crassa, and the zygomatic 

 process is bifid. The posterior temporal fossa is narrow, as it 

 is in all species of Euryapteryx. The temporal fossae are rela- 

 tively broader than in E. crassa, and are shaped as in Meio- 

 nornis, but they resemble those of Emeus, sp. ^, in Professor 

 Parker's memoir "On the Cranial Osteology of the Dinorni- 

 thidae." '■' The optic foramina are large and wide apart for 

 the genus. The supra-orbital ledge makes almost a right 

 angle with the inner portion of the orbital roof, instead of 

 gradually sloping into it, as is usual. The quadrate is like 

 that of E. crassa, but the orbital process is more slender. 



The pre-maxilla is short and broad ; the apex has been 

 abraded, but, judging from the shape of the mandible, it was 

 no doubt rounded. The mandible is much deflexed, broadly 

 U-shaped at the apex — more so than in E. crassa — and the 

 symphysis is broad and low. The articulating-cup of the 

 ramus is like that of E. crassa, but the external posterior 

 angular process is not so prominent. The following are the 

 measurements in the order of Professor Parker's paper, already 



• Trans. Zcol. Soc. of London, vol. xiii., p. 373. 



