HuTTON. — On the Moas of Ncio Zealand. 109 



Pelvis comparatively narrow, the greatest breadth at the 

 anti-trochanters being equal to or slightly less than the 

 pre-acetabular portion of the ilium. The whole length of the 

 ilium is from twice to two and a quarter times the length 

 of the pre-acetabular portion. Metatarsus longer than the 

 femur, its length between 2-5 and 3'6 times the girth at 

 the middle of the shaft. Tibia rather less than twice the 

 length of the metatarsus, its length between 4-3 and 5-7 times 

 the girth. The femur is about 0-9 times the length of the 

 metatarsus, its length between 1-7 and 2-5 times the girth. 

 The presence of a hind-toe has been proved in D. robustiis, 

 D. i^otens, and D. torosus. 



Sub-Genus Dinornis. 



Top of the skull flattened. Temporal fossae very broad, 

 about equal to the orbits. Breadth of the skull at the squamo- 

 sals from 1-1 to 1-2 times the length to the nasals. Length of 

 the basi-sphenoid from the basi-occipital to the end of the ros- 

 trum about two and a quarter times the breadth at the basi- 

 pterygoid processes. Occipital condyle exposed from above. 

 Length of the premaxillte to the maxillary suture about equal 

 to the breadth. Plate XV., fig. 1. 



N.B. — The North Island species are admitted into this 

 sub-genus provisionally, as their skulls are not yet known. 



Dinornis altus. 



D. maximus, Owen, Ext. Birds of N.Z., p. 253 (Dr. Lilhe's 

 specimen), metatarsus only. D. altus, Owen, Ext. Birds 

 of N.Z., p. 361 (1879). 



Figures. — Metatarsus, Ext. Birds of N.Z., pi. Ixxix., fig. 4, 

 dotted outline only. 



Metatarsus : Length, 21-5in. ; girth, 6-3in. 



This species is as yet only known by a single metatarsus 

 from the South Island, the exact locality being unknown. As 

 it is not only longer but also more slender than the similar 

 bone in D. maximus, I agree with Professor Owen in keeping 

 it separate. The femur associated with it by Owen belongs 

 to D. validus. 



Dinornis maximus. 



D. vmximus, Owen, Trans. Zool. Soc, vol. vi., p. 497 (1867), 



and vol. x., p. 147 ; Ext. Birds of N.Z., pp. 250 and 391. 



D. maximus, Haast, Trans. N.Z. Inst., vol. i., p. 87, 



No. 18. 



Figitres. — Metatarsus, Ext. Birds of N.Z., pi. Ixxix., fig. 3 ; 



tibia. I.e., pi. Ixxx. ; femur, I.e., pi. Ixxix., fig. 1. Restoration, 



I.e., pi. xcvii. 



