Mr. R. B. Sharpe's Catalogue of A.ncipitres. 301 



immature specimens o^ F. jieregrinus, and the rufous tints on 

 the imder surface being much richer than in any younsf spe- 

 cimens that I have seen of the typical Peregrine, a peculiarity 

 which is also very noticeable in the immature F. melaaogenys. 



Mr. Ridgway* mentions two female Peregrines from Con- 

 necticut which, after living three years in confinement, were 

 preserved in the National Museum at Washington, and of 

 which he remarks that they " ;u^e remarkable for their very 

 deep colours, in which they differ from all other North- 

 American examples which I have seen, and answer in every 

 particular to the description of F. cassini, Sharpe.^' I infer 

 from this remark that these Connecticut specimens had not, 

 when Mr. Ridgway wrote, been actually compared with a 

 veritable southern F. cassini, and, until this has been done, 

 I think that their absolute identity with that southern r.ice 

 can hardly be admitted as fully established. 



The geographical range of F. cassini in South Alnerica 

 appears to be, comparatively, very limited ; it inosculates in 

 Chili with the southern limit of F. pereyrinus, both races 

 being found in that country. The British Museum contains 

 an immature Falcon from Santiago, which I have not ex- 

 amined, but which Mr. Sharpe refers to this species; and 

 if that identification be correct, this is the most northern 

 locality for F. cassini with which I am acquainted on the 

 western side of South America, whilst on the eastern coast 

 the most northern specimen I know of is an adult from 

 Port Desire, in Patagonia, which is preserved in the Mu- 

 seum at Norwich. The British Museum possesses a typical 

 adult of F. cassini from the Straits of Magellan, and 

 an equally typical immature specimen from the Falkland 

 Islands is, as I have already mentioned, in the collection of 

 Messrs. Salvin and Godman ; I annex measurements taken 

 from the last-named specimen and from a Chilian adult male 

 in the same collection, also from the adult specimen presei-ved 

 at Norwich : — 



* Vide ' Land-Birds of North America,' vol. iii. p. loG. 



