52 Aves, 
AVES. 
Fjudyptes chrysolophus (pi. xxix.), E. chrysocome (pi. xxx.), figured ; 
P. L. Sclater & O. Salvin, Voy. ‘Challenger,’ Zool. ii. pt. viii. Aves. 
Spheniscus demersus (pi. xxvii.) figured, P. L. Sclater & O. Salvin. S. 
magellanicus (pi. xxviii.), Voy. ‘ Challenger,’ Zool. ii. pt. viii. Aves. 
HATIT^. 
See Forbes, W. A., for Anatomy. 
CASUAPII. 
Casuarius heccarii, Sclater: note on its egg; A. v. Pelzeln, Ibis, 1881, 
p. 401. 
Casuarius hicarunculatus figured; J. Gould, B. New Guinea, pt. xii. 
ODONTORNITI-IES. 
See Marsh, 0. C., Seeley, H. G., and Humbert, A. 
Laopteryx priscus^ g. Sc sp. n., O. C. Marsh, Ann. N. H. (5) vii. p. 488, 
from the Upper Jurassic of Wyoming. The foundation of the present 
species is the posterior portion of a skull, indicating a bird rather larger 
in size than Ardea herodiaSy and resembling the skull of the Ratitce more 
than that of any existing birds. Other parts of the skeleton are expected 
to show still stronger reptilian characters. As a single tooth resembling 
that of Ichthyornis was found in the matrix attached to this skull, it 
appears probable that Laopteryx possessed teeth; it is also probable 
that it had bi-concave vertebrae. 
