390 F. e. R. Jourdain. 



from L. argentatus cachinnans. Average size of i8 Corsican 

 eggs, 63.2 X 44.87 mm., Max. 66.2 X 46 and 63 X 46.2, Min. 

 58.6 X 42.3. Average weight of 16 unblown eggs 64.7 

 grammes, Max. 75 g., Min. 51 g. The breeding season is 

 much later than that of L. argentatus cachinnans, and the 

 eggs are laid about May 7 — 16. All the nests examined by 

 me were built entirely of a ribbon like alga, which is cast up 

 on the shores of the islets in great profusion. 



206. Pomathorhine Skua, 8tercorarius pomarinus Temm. Seen 

 at sea near Aleria, Sept. 12 (G.). 



207. Razor-bill, Alca torda L. Abundant in Gulf of Ajaccio in 

 winter, 1890 — i (B.) : abundant along the E. coast in the 

 winters of 1885 — 6 and 1886 — 7 (G.). 



208. Storm Petrel, Procellaria pelagica L. Common at sea between 

 Bastia and Capraia (G.): found breeding on an islet off the 

 E. coast, one egg obtained in June (J.). 



209. Levantine Shearwater, Puffinus puffinus yelhouan Acerb. 

 Common resident, breeding on the rocky islets round the 

 coast (J. W., G., J.). The single egg is usually laid under- 

 neath the large boulders, not for from high water mark 

 (J. W.); but one nest with a young bird was high up (J.) 

 The breeding season is very early and the eggs are laid at the 

 end of March and iirst half of April: eight eggs hatching on 

 May 2 (J. W.). 



210. Mediterranean Shearwater, P. kuhlii huhlii (Boie). Breeds 

 commonly on the small islands round the coast, making a 

 scanty nest underneath rocks or loose boulders, often at some 

 distance from the Avater and with the entrance screened 

 by the brushwood. Unlike the Levantine Shearwater, it is a 

 late breeder and the single egg is rarely laid before the last 

 days of May or the beginning of June. Average size of 9 

 Corsican eggs, 69.91X45.74 mm.. Max. 73.2X44.4 and 

 69.9 X 48, Min. 66.7 X 47 and 70 X 44.2. 



211. Great Crested Grebe, Podiceps cristatus (L.). Winter visitor 

 to Lake Biguglia and the lagoons on the E. coast, not un- 

 common (Jesse, J. W.). One shot in breeding plumage on 

 Mar. 7 (J. W.). ■ 



212. Black-necked Grebe, P. nigricollis Brehm. Common winter 

 visitor to the lagoons: possibly a few pairs stay to breed. A 

 few noted on E. coast in March, but none in April (W.): one 

 of a pair in breeding plumage shot on April 19 and another 

 pair seen on May 18 (J. W.). 



213. Little Grebe, P. rußcollis (Pall.) Winter visitor, not un- 

 common. Seen in October (G.), and last noted on April 24 

 (J.W.). 



