ANATIDiE. 99 



18906. Tlio imperfect right metacarpus ; from the Pleistocene 

 cavern deposits of Lagoa Santa, Minas Geraes, lirazil. 

 Resembles the specimen figured by ^Yiugein the ' E. Mus. 

 Lund.' vol. i. art. 2, fig. 4 of plate. 



Cluussen Collection. Purchased, 1848. 



Subfamily C e r e o p s i n .e. 



The rostrum of the skull is very short. The coracoid has a large 

 subclavicular process, and usually a slit-like foramen on the upper 

 part of the anterior border (fig. 26). The second trochlea of the 

 tarso-metatarsus is but little reflected. The femur has an extremely 

 deep popliteal depression, and the external condyle on a much lower 

 level than the inner one. The humerus resembles that of the 

 Anserince. The build is massive. 



Genus CNEMIORNIS, Owen \ 

 Skull short and massive, with beak rounded and stout. Carina 

 of sternum aborted. Limb-bones short and very stout, the ulna 

 being shorter than the humerus and having very prominent tubercles 

 for the secondaries ; cnemial crest of tibia greatly developed. No 

 foramen between third and fourth trochleas of tarso-metatarsus. 

 Spines of dorsal vertebraj tall. 



The coracoid referred to this genus by Owen belongs to AiHornis 

 (infra, p. 153). 



Cnemiornis calcitrans, Owen\ 



The type species. Very considerably larger than the existing 

 Ccreopsis nova'-Jiollandlic, with the limbs relatively much stouter 

 and shorter. 



JIab. New Zealand. 



The full oiuing specimens were o'dainecl from siiperjicial deposits yield- 

 incj remains of Diuornithidoe, and include the types. Unless it 

 is stated to the contrary, they were found at Timaru, South 

 Island, and were presented hy Sir R. Owen, K.C.B,, 1875. 



46575. The cranium. Figured by Owen in the ' Trans. Zool. Soc' 

 (Fiy-) vol. ix. pi. XXXV. figs. 1-4 and 11, and also in his 

 ' Extinct Birds of Now Zealand,' pi. ci. figs. 1-4 & 11. 



1 Trans. Zool. Soc. vol. v. p. 396 (t8()5). ' Loc. cit. 



n2 



