Ill 



Subfamily Anatin^. 



In the typical members of this group tho tarso-metatarsus is of 

 moderate length, with the shaft quadrilateral, the extremities but 

 slightly enlarged, and the second trochlea less reflected than in the 

 other subfamilies (except Cereopsimv). The tibio-tarsus is charac- 

 terized by the absence of a marked flattening of the anterior surface 

 of the shaft, and its constriction above the distal extremity. 



The humerus usually has tho subtrochanteric fossa extremely 

 large, the supratrochanteric groove very deep, and the facet for the 

 pectoralis minor more elongated than in the Anserinoi ; there is 

 generally a distinct olecranal fossa. In Anas boscas the shaft of 

 the humerus is short and thick, while in Querquedula it is slender. 



Genus TADORIXTA, Fleming'. 

 Syn. Casarca, Bonaparte-. 



The humerus is somewhat intermediate between that of Anser 

 and Anas. It agrees with the latter in the extreme bluntness of 

 the upper extremity of the radial condyle, and with the humerus of 

 Bernicla in the abrupt rise of the delto-pectoral crest from the 

 shaft. The coracoid is shorter and wider than in Anas, with a 

 larger subclavicular process, which descends lower on the shaft, and 

 deeper hyosternal process. 



Cationta ftarifgata (Gmelin'). 



Syn. Anas varier/afa, Gmelin*. 

 Casarca variegata, Auct, 



The undermentioned specimens are referred to this species on 

 account of their close resemblance to the corresponding bones of 

 T. casarca. 



Hah. New Zealand. 



The folloiui))f/ specimens ivere obtained from the superficial deposits 

 of Waingonfforo, North Island, and were purchased from 

 Walter Mantell, Esq., about 18o5. 



32240*. The right humerus, with the proximal extremity and 

 ulnar condyle imperfect. When entire the length of this 



' Philosoplij of Zoology, vol. ii. p. 2G0 (1822). 



- Comp. List Birds of Europe and N. America, p. 56 (183S). 



' Syst. Nat. vol. i. p. 505 (\78S).— Anas. 



* Loc. cit. 



