HuTTON. — On the Moas of Nezu Zealand. 135 



Skull rather small, rounded behind, and moderately con- 

 vex. Breadth at the squamosals from 1-5 to 1"6 thnes 

 the height at the basi-temporal. Length to the nasals either 

 greater or less than the breadth of the squamosals. Length 

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

 rostrum rather less than three times the breadth of the basi- 

 pterj'goid processes. Temporal fossae narrow and deep. Pos- 

 terior margin of tympanic cavity straight. Occipital condyle 

 hidden or slightly exposed both vertically and laterally. 

 Beak very short and stout, slightly compressed and rounded 

 at the tip. Length of the premaxillag to the maxillary suture 

 less than the breadth. Plate XVI., fig. 8. 



Sterimm without coracoid pits, or sometimes famtly 

 marked. Length of the body about one-half of its breadth. 

 Costal processes small ; lateral processes short, nearly 

 straight, diverging at an angle of about 35*^ from the middle 

 line ; median process short, rarely notched. Breadth across 

 the ends of the lateral processes, from 1-8 to 2-1 times the 

 breadth of the body below the costal region. Three pairs of 

 sternal ribs articulating with the sternum. No scapulo- 

 coracoid. 



Pelvis very broad, and the acetabula set far forwards. The 

 breadth at the anti-trochanters is one and a half times the 

 length of the pre-acetabular portion of the ilia. Length of 

 the ilium, from 2-7 to 2-9 times the length of the pre-acetabular 

 portion. Metatarsus much shorter than the femur ; its length 

 between 1-3 and 1-5 times the girth of the shaft in the 

 middle. Tibia from 2-2 to 2-4 times the length of the meta- 

 tarsus ; its length between 3 and 3-7 times the girth of 

 the shaft. Femttr about 1*3 times the length of the meta- 

 tarsus; its length between 1-8 and 1"5 times the girth of the 

 shaft. 



The presence of a hind-toe has been proved in E. elephan- 

 toinis and E. ponderosus. The tracheal rings are ossified, 

 elliptical, and smooth. Ext. Birds of N.Z., pi. xciii., 

 figs. 1-12. 



This genus contains the most robust of all the moas, and 

 is confined to the South Island. 



Euryapteryx elephantopus, 



Dinornls elepliantoims, Owen, Ti'ans. Zool. Soc, vol. iv., 

 p. 149 (1856), and p. 159 ; Buller, Birds of N.Z., 2nd 

 ed., vol. i., p. xxxii., and vol. ii., p. 333; Haast, Trans. 

 N.Z. Inst., vol. i., p. 80, No. 12. 



Figures. — Metatarsus, Ext. Birds of N.Z., pi. Ivii. ; tibia. 

 I.e., pi. Ivi., fig. 4; femur, pl. Ivi., fig. 1 ; cranium. I.e., 



