FEOM THE ZEBBTJG CAAT;, MALTA. 121 



longing to C. falconeri ; for the thigh-bones were the exact counterpart of those which 

 had come earlier under my notice. 



I annex a Table of measurements of the bones of C. falconeri, as compared with 

 those of the large female C. olor : — 



C. olor. C. falconeri. 



Middle thoracic rib— i^g^gs ^^^_ incj^es, Ungs. 



a. Across the neck ....0 5...0 6 



I). Width of outer edge ... 3 ... 4 



Uhia— 



Diameter of shaft 5...0 7 



Eadius — 



Diameter of shaft 3 ... 4 



Tibia- 

 Fore-and-aft width of head . 1 5 

 Thickness of head .... 9^ 



Width of shaft 5| 



Width across lower condyles . 11 



Tarso-metatarse — 



Extreme length 4 3 



Width across head .... 1 



Width across shaft .... 5 



Width across condyles ... 1 



91 



;2 



Phalanx (proximal, middle) — 



Length 2 



Thickness of proximal end . . 5f 



Thickness of shaft .... 3 ... 4^ 



Mr. Erxleben's figures show veiy faithfully the perfect agreement, in everything but 

 size, between the great extinct Swan and Gpms olor. The largest bones of C. falconeri 

 are 'not, however, displayed in the Plate, for this reason, that the most perfect bonos 

 for figuring were apparently those oi females; but there are bones still larger in the col- 

 lection, most likely those of male birds. 



s2 



