HUALACROCORACID^. 



49 



anticus of Diomedea, in reality merely corresponds to the 

 extreme upper portion of this surface found in Sula, the 

 depressed lower portion being wanting ; the contour of 

 the specimen is very like that found in Sula. A. 7 is a 

 portion from the middle of the shaft. A. 8 is the proximal 

 extremity of the left humerus, and is represented in figs. 

 1, 2 of the plate: its resemblance to the figure of the 

 humerus of Pelagornis is extremely close, and it also 

 resembles that of Sula ; it is quite unlike Diomedea, the 

 distinct facet marked e in the figure not really existing. 

 A. 9 is part of the shaft, apparently that portion of the 

 left bone which includes the distal termination of the 

 delto-pectoral crest. Purchased, 1881. 



38941. Fragment of the shaft of a humerus in two pieces. Figured 



{Fig.) by Bowerbank in the 'Ann. Mag. Nat. Hist.' ser. 2, 



vol. xiv. p. 263 (1854), as Lithornis emuinus, of which 



it is the type. BoiverbanJc Collection. Purchased, 1865. 



A. 143. Cast of a fragment of bone which is apparently part of the 

 distal extremity of the left humerus of a larger individual 



Fis. 11. 



Argillornis hmgipcnnis.—'Prosimixl and palmar aspects of the proximal 

 extremity of the left ulua from the London Clay. ^. 



than the one to which the type humeri belonged. The 

 original, which is preserved In the Woodwardian Museum, 



E 



