215 



PACHYORNIS IMMANIS lyd. 



Pachyornis immanis Lydekker, Cat. Foss. Birds Brit. Mus., p. 343 (1891). 



THIS is the most bulky and largest member of the genus, and also of 

 all Dinornithidae. Its living parallel to-day is Casuarius philipi 

 Rothschild, which, though by no means the tallest species of Casuarius, 

 is the most bulky, and has the shortest and stoutest legs — the tarso- 

 metatarsus is specially short and stout. 



The type tarso-metatarsus measures 228 mm. = 9-9 inches, and in 

 width (shaft) 84 mm. = 3-3 inches, while the type tarso-metatarsus of 

 elephantopus measures 239 mm. = 9-4 inches and 65 mm. = 2*55 inches. 



The skull is much more depressed than in elephantopus and with deeper 

 temporal fossae and a shorter post orbital region. 

 Type : No. A168 British Museum. 

 Habitat : Middle Island, New Zealand. 



PACHYORNIS ROTHSCHILDI lyd. 



Pachyornis rothschildi Lydekker, P.Z. S. 1891, pp. 479-482, pi. XXXVIII. 



THE bones in the Tring Museum, which form the type of this species, 

 unfortunately have no history and their locality is unknown. It differs 

 from the other species of the genus by the slenderer proportions of the 

 tibio-tarsus, which is 22 inches long by 2'9 inches distal width, as opposed to 

 24 inches by 4-2 in elephantopus and 20 inches by 3*5 in ponderosus, the two 

 nearest in size. Femur: length 106 as opposed to 12 5 inches in elephantopus. 



