192 CARINAT^. 



The coracoid is much expanded distallj-, and the sternal articu- 

 lation extends a long way up its inner surface. The humerus is 

 long, with scarcely any subtrochanteric fossa. 



The compression of the beak is but slight. 



Genus COLYMBUS, Linn.' 

 The type genus. 



CoImiibiiS Stptcntvionalts, Linn.^ 



Hah. Northern Europe. 



A. 211. Casts of the associated femur, tibio-tarsus, and tarso-meta- 

 tarsus. The originals were obtained from the Pleistocene 

 of Mundesley, Norfolk, and are preserved in the Museum 

 of Practical Geology, Jermyn Street. They are described 

 and figured by E. T. Newton in the ' Geol Mag.' decade 2, 

 vol. X. p. 97, pi. iii. (1883). 



Presented by E. T. Newton, Esq., 1890. 



Genus COLYMBOIDES, Milne-Edwards \ 



Imperfectly known ; founded upon a humerus presenting some 

 of the characters of Colymhus, with others found in Podiceps. The 

 undermentioned coracoid approximates to that of Colymhus, and is 

 unlike Podiceps, the same being true of the sternum. 



Coly mboides minutus, Milne-Edwards *. 



The type species. Founded upon a humerus, which is about half the length 

 of that of Coli/mhus septentrionalis. 

 Hab. Europe (France). 

 From the Lower Miocene (Upper Oligocene) of Allier. 



Colymboides anglicus, Lydekker (n. sp.). 

 Known by the coracoid, which is considerably more than half the 

 size of the corresponding bone of Colymhus septentrioncdis. 

 Hah. Europe (England). 



30330. The left coracoid ; from the Upper Eocene (Lower Oligo- 

 (Fig.) cene) of Hordwell, Hampshire. The type figured in wood- 

 cut 43, with a restoration of the missing process on the 



1 Svst. Nat. ed. 12, vol. i. p. 221 (1766). ^ Loc. cit. 



^ Oiseaux Fossiles de la France, vol. i. p. 297 (1867-()8). * Lnc cit. 



