218 Prof. H. H. Giglioli on the 



4-Sterna dougalli, Montag. 



I was fortunate enough to secure by exchange the only 

 specimen I know of caught in Italy. It was formerly in 

 Baron Ricasoli^s collection, which was presented to the Siena 

 Natural- History Museum. Baron Ricasoli assured me that 

 it was sent to him from Massaciuccoli in May 1835. 



-f-ONYCHOPRION rULIGINOSUS (Gm.) . 



Our collection possesses the only specimen caught in 

 Italy : it is the one mentioned by Salvadori, and was caught 

 on the 28th of October 1862, in a net for trout on the tor- 

 rent Chisone, near Perosa- Argentina (Fenestrelle), in Pied- 

 mont. I purchased it from Signor Scarafia, who mounted it 

 himself from the flesh. 



4-Gelochelidon anglica (Montag.). 



Uncommon. Our collection possesses fine specimens from 

 Pisa, Massaciuccoli, and Bari. 



-f^HYDROCHELIDON HYBRIDA (Pall.). 



Bather rare. Our collection has specimens from Genoa, 

 Massaciuccoli, and Pisa : the latter is the place where it 

 most frequently occurs. 



! Hydrochelidon leucoptera (Schinz). 



This species is far from being as abundant as H. nigra ; 

 but I have several times seen both flying together over the 

 Arno, at Florence, in May. 



Chroicocephalus ridibundus (Linn.). 



Our commonest Gull. It often varies in size ; and it was 

 on small specimens that Bonaparte founded his Xema capis- 

 tratum. 



Chroicocephalus melanocephalus (Natt.). 



Of eight adult specimens in our collection (one alone in 

 winter plumage and one with incipient hood), six have the 

 primaries perfectly white at the extremity ; two alone, with 

 full black hoods, present the primaries largely tipped with 

 black. 

 ^-Chroicocephalus minutus (Pall.). 



Rather scarce. Our collection possesses seven specimens 



