66 The Irish Naturalist. 



S. macrura, Naumann — Arctic Tern. As the preceding, but not 

 so numerous. One was caught alive in a field, October, iS6o. 



Larus ridibundus, Iv. — Bi,ack-heade;d Guiyi,. In winter months this 

 gull is found in great numbers, but is never seen in summer. 



L. canus, Iv. — Common Gui^i,. Very rarely seen ; a bird in first year's 

 plumage was shot in January, i860. 

 *L. argentatus, Gmelin — Herring-Gui.1,. Very common, and breeds 



in large numbers. 

 *L. fuscus, L.— Lesser Bi.ack-backed Gui,i<. A few pairs breed at the 

 north side of the island every year. 



L. marinus, L.— Great Bi,ack-backed Gui,!,. Occasionally seen in 

 winter, and specimens have been shot. 



L. glaucus, Fab. — Gi^aucous Gui.1,. An immature bird was shot in 

 Februar}', 1867, and another in February, 1869. Since then they have 

 been occasionally seen. A fine adult bird, in beautiful plumage, was 

 caught alive in a net, 9th October, 1891. 

 *Itissa tridactyla, L. — Kittiwake Gui^i,. Immense numbers breed at 

 the Bull Rock and at the north side. 



Stercorarius pomatorhinus Tenim. — Pomatorhine Skua. — Not un- 

 commonly seen on the pasture lands in autumn and winter. An 

 immature bird was captured alive in a field, 22nd October, 1891. 



S. crepidatus, Gmelin — Richardson's Skua. Young birds are fre- 

 quently seen, and have been shot. An adult was captured alive in 

 September, 1886. 



S. parasiticus, L. — Buffon'S Skua. A fine specimen in perfect 

 plumage was taken alive at Ballygill, in May, i860. Three others 

 were seen at the same time. 



(Countless numbers of both 

 species breed on the west- 

 ern and northern cliffs every 

 year. The variety known 

 as the Ringed Guillemot is 

 very common. 

 *U. grylle, L. — Black Guii,i<EM0T. Breeds in moderate numbers on 

 the cliffs, and remains all the year. 

 Mergnlus alle, Iv. — LiTTi^E Auk. Occasionally seen. In December, 

 1862, three were picked up dead. One was caught alive on the high 

 road in January, 1863, and since then a few have been found dead on 

 the beach at interv^als. 

 *Pratercula arctica, L. — Puffin. Breeds in large numbers on the 

 grassy slopes, usually arriving about 17th March. 

 Colymbus glacialis, L. — Great Northern Diver. Occasionally seen 

 in Church Bay, and has been shot in summer plumage. Two were 

 seen in June, 1885. 

 C. septentrionalis, L. — Red-ThroaTED Diver. Sometimes seen. 



One was shot on Ushet Lough in the winter of 1868. 

 Fodicipes auritus, L. — Sci^avonian Grebe. Has once occurred, in 

 December, 1871. 

 *P. fluviatilis, Tunstall.— L1TT1.E Grebe. Common in the marshes, 

 where it breeds. 

 Fulniarus glacialis, L. — Fuxmar Petrei^. The only specimen seen 

 was captured alive on the rocks near the lighthouse, 2nd September, 

 1889. It was an adult in good plumage. 

 *Puffinus angloruui, Temm.— Manx Shearwater. Common on the 

 north side of the island, where it breeds. 

 Cymocliorea leucorrlioa, Vie^lot— Fork-Taii,ed Petrei,. After the 

 storms of November, 1881, and October, 1891, several specimens were 

 picked up dead on the beach. 

 Procellaria pelagica, L.— Storm Petrei.. Often seen flying over the 

 sea, and is commonly found on the beach after storms. It is said by 

 the light-keepers to breed on the island, but Mr. Gage never found 

 it, and I think it has been confused with the Manx Shearwater. 



