338 PROFESSOR OWEN'S OBSERVATIONS ON THE DODO, 



Fig, 4. Proximal end of the same tibia. 



5. Side view of distal end of the same tibia. 



(All the figures are of the natural size.) 



a. Inner condyloid surface. 



t. Inter-condyloid tuberosity. 



b. Epicnemial ridge. 

 p. Procnemial ridge, 

 /f. Ectocnemial ridge. 



/. Trochlear bridge and foramen. 



PLATE XLVIII. 



Fig. 1 . Back view of tarso-metatarsus of Dinornis (Palapteryx) ingens. 



2. Ditto ditto Dinornis (Palapteryx) dromioides. 



3. Ditto ditto Dinornis casuarinus. 



4. Ditto ditto Dinornis crassus. 



5. Distal extremity of the same bone. 



6. Front view of mutilated tarso-metatarsus oi Dinornis curtus. 



d, figg. 1 & 2, rough surface for attachment of metatarsal bone of back-toe. 



PLATE XLIX. 



Fig. 1 . Back view of the bones and tendons of the foot of Didus ineptus. 



2. Back view of tarso-raetatarsal bones oi Haliaetus albicilla. 



3. Ditto ditto Apteryx Australis. 



(All the figures are of the natural size.) 



PLATE L. 



Fig. 1 . Side view of the bones and tendons of the foot of Didus ineptus. 



2. Side view of tarso-metatarsal bones of Haliaetus albicilla. 



3. Ditto ditto Apteryx Australis. 



m. Confluent tarsal and chief metatarsal bones. 



c. Calcaneal process. 



pm. Rudimental metatarsus of back-toe (L). 



1. Proximal phalanx. 



2. Second phalanx. 



3. Third phalanx (IL IIL IV.). 



4. Fourth phalanx (III. & IV.). 



5. Fifth phalanx (IV.). 



