the Birds of Transylvania. 433 



284. Larus fuscus, L. 



Rare, but has been obtained in various localities. There 

 is a specimen in the Klausenburg Museum which was killed 

 at Bethlen on June 19th, 1865; and both this and the two 

 preceding species have been shot in the Strell valley. 



285. Larus marinus, L. 



Very rare. Herr Buda Adam says that he has seen it at 

 Hatzeg. 



286. Stercorarius catarrhactes (L.). 



Very rare. Bieltz mentions that a specimen which was 

 killed at Hermannstadt in 1850 is in the collection of the 

 Natural- History Society of that place. 



287. Stercorarius parasiticus (L.). 



This species is included in a List of Transjdvanian birds in 

 the collection of Graf Lazar. 



288. Stercorarius pomatorhinus, Temm. 



Solitary specimens occasionally occur in autumn. Bieltz 

 says that there was one in the former College Museum of 

 Nagy Enyed. 



289. Thalassidroma pelagica (L.) . 



A few specimens have occurred during rough weather. One 

 was killed by Herr Stetter in 1840 on the Maros. 



290. COLYMBUS GLACIALIS, L. 



A few visit the country every winter. 



291. CoLYMBUS ARCTICUS, L. 



Commoner than the preceding in winter ; and solitary birds 

 have been seen during summer. Herr Csato says that both 

 the young and adult of this, and the young of the following 

 species, have been killed in autumn in the Strell valley. 



292. CoLYMBUS SEPTENTRIONALIS, L. 



A few occur in winter and autumn, but they are almost 

 always young bii'ds. 



*293. PoDicEPS CRisTATUs (L.). Bubos Vocsok. 

 Very common on the lakes of the Mezoseg. It comes in 

 March, and leaves in October. 



