1891.] PLETSTOCENE BIRD-REMAINS. 473 



however, ralher smaller than one of T. torquatus belonging to a skeleton 

 in the British Museum. jVIoreover, it agrees with that specimen in 

 the slight degree of development of the oblique ridge on the outer 

 surface of the delto-pectoral crest, in which respect it differs from the 

 humerus of Tardus proper. I am therefore inclined to refer the 



Fig. 2. 



Dorsal and palmar aspects of the right humerus of Turdus, cf. merula, from 



Toga, Corsica. |. 



specimen to the Meruline group, and think it highly probable that 

 it belongs to Turdus merula. 



Hii'undinidce. — The humerus of the Swallows is characterized by its 

 relative shortness, and the development of a narrow and very shallow 

 tricipital fossa extending slightly beneath the head. The specimen 

 of the left side, from Monte Sau Giovanni, represented in figs. 10, 10 « 

 of the Plate, indicates a member of this family, and is not improbably 

 referable to Hirundo rustica. It is slightly narrower than the recent 

 humerus of Chelidon iirbica figured by Milne-Edwards in his 'E-ech. 

 Oiseaux Foss. de la France,' pi. 149. fig. 4, and still narrower than 

 the fossil one of Cotile rupestris represented in plate 156. fig. 24 of 

 the same work. 



V. COLUMB^. 



Columba, cf. livia, Linn. — The only specimen in the Sardinian 

 collection which can be referred to the Columbidce is the coracoid 

 from Tavolara represented in fig. 11 of the Plate. This specimen has 

 lost the subclavicular process as well as the extremity of the hyo- 

 sternal angle. It agrees so closely with the coracoid of Columba livia 

 that I am disposed to refer it to that species, now common on both 

 sides of the Mediterranean. 



Among the specimens from the breccia of Toga, Corsica, is the 

 right humerus of a Pigeon which may probably be referred to the 

 same species as the Sardinian coracoid. The length of the specimen 

 (fig. 3, p. 474) is 0,044 ; and it agrees very closely with the corre- 

 sponding bone of a rather larger skeleton of C. livia in the British 

 Museum. 



