48 Canon Tristram on tivo Birds 



often thrust under tlie rocks up to the shoulder. The en- 

 trance to the nest is difficult to find, often a rock in the short 

 scrub, sonic distance from the water, is the chosen spot. 



174. Yelkouan Shearwater. Puffinus yeJkouan. 



This species was fairly common on the small islands round 

 the coast. On the 2nd of May, with the aid of a small 

 dog", I found eight eggs ; all were placed under piles of large 

 rocks which had fallen from the cliff above. The eggs were 

 nearly hatched, the young in some having broken the shells. 

 While Puffinus kuhli likes to nest under single rocks some 

 distance from the water, this species nests only a few feet 

 from high-water mark. The only difference between this and 

 the Manx Shearwater (P. anglorum) is that all the under 

 tail-coverts are dusky brown, instead of pure white. 



175. Pelecanus, sp. inc. 



I was assured by several Corsican sportsmen that Pelicans 

 sometimes visit the island in winter. 



176. The Shag. Phalacrocorax graculus. 



Fairly common and resident ; nesting very early, in 

 numbers, on several of the small islands visited. All the 

 young were swimming about, full-grown, with their parents, 

 on 2nd Mav. 



V. — On two Birds from Norfolk Island. 

 By H. B. Tristram, D.D., F.R.S. 



I HAVE received from Mr.E.L. Layard specimens of thePlaty- 

 cercMS from Norfolk Island, referred to by him (' Ibis,^ 1881, 

 p. 173) as deserving of recognition and separable from P.pcn- 

 nanti of the Australian continent. There is no difference in 

 coloration, either in adult or immature plumage, between the 

 birds from the continent and those from Norfolk Island ; 

 but the latter are decidedly smaller in their dimensions. 



The measurements of the continental bird are : — long. tot. 

 16"0poll., alae 7*1, caud. 82, tarsi 0"6, dig. med. cum ungue 

 1*2. Of the Norfolk-Island specimens : — long. tot. 13"0 poll., 

 alse, 6*7, caud. 7*0, tarsi ()'5, dig. med. cum unguc TO. 



