A. 48. 



A. 73. 



TETRAONIDiE. iqo 



The right femur, with the extremities somewhat imperfect • 

 from the Pleistocene of Kent's Hole Cavern, Torcmay' 

 Devonshire. This specimen, of which the length is u OSo' 

 accords precisely with the corresponding bone of a recent 

 skeleton. Presented hij Lord IMdon, 1883. 



A left humerus apparently referable to a female of this 

 species ; from the peat of Jfewport, Monmouthshire. This 

 specimen is somewhat smaller than the humerus of a 

 recent (? male) skeleton in the Museum, hut exhibits the 

 characteristic features of the head, subtrochanteric fora- 

 men, and impression of the brachialis anticus, whereby it 

 IS distinguished from Lacjopus. The head has been some- 

 what abraded, and the upper part of the radial condyle is 

 wanting. Presented by J. E. Lee, Esq., 1885. 



Crtrao urosallusi, Linn.' 

 The largest species. The middle of the distal extremity of the 



-Hab. Europe. 



18239. A left coracoid apparently referable to a young individual 

 of this species ; from the Forest-bed (?) of Ostend, Norfolk 

 This specimen is slightly smaller than the corresponding 

 bone of y. tetrir, from which it is at once distingxiishel 

 by the form of the sternal surface. The absence of ex- 

 pansion of the hyosternal process and posterior border 

 distinguishes it from Lar^ojn,s. The form and position of 

 the antenor facet for the furcula is precisely the same as 

 m adult bones. Green Collection. Purchased, 1843. 



Genus LAGOPUS, Erisson \ 

 The head of the humerus is more elevated than in Tetrao, the 

 subtrochanteric foramen is large and does not open on to the 



^:^^^'' '' ?: "^-^^.^^'^^^ depression for'the brachial 

 ant cus 1. narrow and deep, with a curved inner border. The cora 

 coKl^is distinguished by the great proaucMon of us hyosternal 



' Syst. Nat. ed. 12, vol. i. p. 273 (1766;. 

 = Oniithologie, vol. i. p. 181 (17G0). 



