lo: 



Subfamily C y g n i n .t;. 



The tarso-metatarsus is comparatively long and stout, with the 

 second groove of the talon almost closed, and tlie distal trochlea) 

 very large. The tibio-tursus is but little flattened in front, with a 

 very large fibular crest. The femur is very short and thick. The 

 coracoid has a very large head, a slender shaft, and small subclavicular 

 process. The humerus is extremely long and slender, with a small 

 delto-pectoral crest, and no trace of an olecraual fossa. 



Genus CYGNUS, Eechstein \ 

 The type genus. In existing species the phalangeals of the pes 

 are greatly elongated, and the neck is very long. It includes the 

 largest living representatives of the family. 



Ci)guii;S mustnt£!, liechstein I 



Syn. Cyijmis ferus, Fleming 3_ 



Of large size, the length of the tarso-metatarsus of males reach- 

 ing to 0,120. The groove on the upper part of the anterior surface 

 of the latter bone is very deep, and the bar below the foramen 

 between the second and third troclilea) is comparatively long. 



Hah. Europe. 



A. 66. Tlie distal portion of a left tibio-tarsus, not improbably 

 {Fkj.) belonging to this species ; from the Pleistocene of Grays, 



Essex. Noticed and figured by Owen in the ' Quart! 



Journ. Geol. Soc' vol. xii. p. 211, p]. iii. fig. 13. 



Presented hij Sir B. Omn, K.C.B., 1SS4, 



50097. Seven associated bones, which may belong either to a female 

 of this species or to the smaller C. immutabilis ; from 

 Southey Fen, Norfolk. The specimens comprise the ri-ht 

 humerus, the left ulna, the radius and metacarpus of either 

 side, and the left tibio-tarsus. Purchased, 1S79. 



45809. The proximal portion of a left radius, not improbably belong- 

 ing to this species ; from the Tleistocene of Ilford, Essex. 

 Brady Collection. Purchased, 1874. 

 ' Oniitli. Tnsohenb. pi. ii. p. 404 (1803). 

 ' Gemein. Is'aturgesclj. Deutsclilands, vul. iii. p. 830 (1809) 

 ' Eritish Animals, p. 12G (1828). 



