THE BIRDS OF TORTUGAL. 215 



[226. Stekna fissipks (Linn.), ' Black Tern.' 

 Is also common.] 



227. *Larus ridibundus (Linn.), * Black-headed Gull,' Gaivota. 



228. *Larus rissa (Linn.), * Kittiwake Gull,' Gaivota. 



229. *Larus fuscus (Linn.), 'Lesser Black-backed Gull,' Al- 



catraz. 



230. *Larus argentatus (Gmel.), ' Herring Gull,' Alcatraz, 



Gaivota. 



23L jLarus MARiNUS (Linn.), ' Great Black-backed Gull.' 



These five species are all in the Portuguese collection of 

 the Lisbon Museum ; the four first are reported to be com- 

 mon, the last rare. I had a good opportunity while in 

 Lisbon of watching the Gulls on the Tagus, from my win- 

 dows in the Hotel Braganza, situated in a commanding 

 position overlooking the river, and, with the glass, identified 

 to my own satisfliction L. ridibundus, L. rissa, and L. ar- 



GENTATUS. 



[232. f Stercorarius pomarinus (Temm.), ' Pomarine Skua.' 

 Not common. There is a single specimen of this 

 species in the Museum at Lisbon ; it is an adult female, 

 in winter plumage.] 



233. fTHALAssiDROMA Leachi (Temm.), * Forked-tailed Petrel.' 



234. friiALASSiDROMA TELAGiCA (Linn.), ' Storiu Petrel,' Alma 



de mestre. 

 Both species are considered rare in Portugal, the former 

 more especially ; and yet, if there be truth in the popular 

 tale of the love of storms which these birds evince, unques- 

 tionably the proximity to Portugal of the tempest-tossed 

 Bay of Biscay should attract the whole race of such bois- 

 terous spirits to its shores. 



[235. PuFFixus MAJOR (Fabcr), ' Greater Shearwater.' 

 Bare.] 



Lastly, I would add that Puffinus Anglorum (Boie), 

 * ;Manx Shearwater,' is said to be well known in Portugal, 

 and to be often seen on the Tagus. 



