50 CARINAT^. 



Cambridge, is the type of Megalornis, and is figured by 

 Seeley in the ' Quart. Journ. Geol. Soc' vol. xxx. p. 708, 

 woodcut 1, where it is regarded as the proximal portion 

 of the tibia of a Ratite Bird. 



Presented hy Prof. H. 6. Seeley. 



A. 94. The proximal extremity of the loft ulna. This specimen 

 {Fig.) (fig. 11) accords very closely with the corresponding bone 

 of Sula, and has no sort of resemblance to that of 

 Diomedea. In the form of the olecranon, and of the cups 

 for the condyles of the humerus, it is almost indistinguish- 

 able from the former genus. Purchased, 1886, 



Genus PHALACROCORAX, Brisson \ 



Syn. Carbo, Lacepede ^. 

 Graculus, Auct. 



The type genus. Includes medium-sized and comparatively short- 

 winged birds in which the cranial rostrum is narrow, hooked, and 

 of moderate length, with the middle line forming a marked ridge 

 bounded by two deep lateral grooves ; the parieto-frontal region is 

 flattened ; and there are two vertical ridges on the occipital 

 prominence. 



The tarso-metatarsus wants the large pneumatic foramen at the 

 proximal extremity of the anterior surface found in Pelecanus, and 

 the channel on the anterior surface is larger and deeper ; the 

 gastrocnemial ridge of the talon is shorter and wider ; and the 

 distal trochlea3 are placed more nearly on the same horizontal line. 



The tibio-tarsus is relatively long, with the anterior surface much 

 flattened, and the fibular ridge of considerable length and very 

 prominent. 



The femur is much curved forwards, with a long neck, and 

 without a distinct popliteal depression. 



The long and slender coracoid is characterized by its extreme 

 forward curvature, the strong intermuscular ridge extending high 

 up on the anterior surface, and the prominent ridge, flanked by 

 lateral ledges, on the sternal surface, which form a tenon-and- 

 mortice articulation. 



1 Ornithologie, vol. vi. p. 511 (1760). 



' Mem. de I'lnstitut, vol. iii. p. 51.5 (1801). 



