306 



1626. The skull of the White-headed Sea-Eagle (Haliaiitus leucocephalus). 



* 



Hunterian. 



1627. The skeleton of the Cinereous Earne, or Sea-Eagle (Haliaiitus albicillus). 



Of the 1 9 vertebrae between the skull and sacrum, the six posterior bear moveable ribs, the 

 last five pairs of which unite with the sternum : there are two pairs of sacral ribs, which arti- 

 culate with the sternum directly. The sternum is entire. The tibiae and metatarsi are of 

 characteristic strength, but the anterior ridge in the metatarsus is less strongly marked than 

 in the Osprey. The short proximal phalanx of the inner toe has coalesced with the middle 

 one. The span of the arch of the powerful furculum reaches its maximum in this species of 

 Raptorial bird. 



Mm. South. 



Genus Aquila. 



1628. The skull of a Golden Eagle, from the Himalayan Mountains (Aquila chrys- 

 aetos ?) . Presented by Lieut. - Colonel Finch . 



1629. The sternum and scapular arch of a Golden Eagle (Aquila chrysaetos}. 



Presented by William Clift, Esq., F.E.S. 



1630. The hyoidean arch of the Golden Eagle (Aquila chrysaetos}. 



Presented by Dr. Leach, F.L.S. 



1631. The skull of an Eagle (Aquila imperialis}, wanting the tympanics and ptery- 

 goids. The right superorbital hone is preserved, attached to the right lacrymal. 



Hunterian. 



1632. The sternum of an Eagle from Van Diemen's Land (Aquila fucosa}. 



Presented by Ronald Gunn, Esq. 



Genus Falco. 



1633. The skeleton of the Peregrine Falcon (Falco peregrinus}. 



Of the 20 vertebrae between the skull and sacrum, the seven posterior bear moveable ribs, 

 the last five pairs of which unite with the sternum : there is one pair of sacral ribs, which 

 also unite with the sternum by strong bony hsemapophyses. The premaxillary portion of 

 the bones of the upper beak is not only strong, short, hooked, and sharp-pointed, as in other 

 diurnal Birds of Prey, but has a toothed process on each side characteristic of the true Fal- 

 conideB. The fossa for the insertion of the temporal and masseter muscles is unusually ex- 

 tended upon the outer side of the ramus of the lower jaw. The external nostrils are subcir- 

 cular perforations just behind the curved transverse line indicating the extent of the cere 



