224 STBRCORARIIDJE. 



8. Scarborough. W. Eooke, Esq. [P.]. 

 3. Flamboroiigh (Harr/itt Coll.). Seebohm Coll. 



r>. Flamboroiigh (H. Seebohm). Seebohm Coll. 



9. Lundy Island, Bristol Channel, Saunders Coll. 



June. 

 1. Stappen, Norway, 17th June. Seebohm Coll. 



(>. Svffirholt, Fiumark, 16th June. Seebohm Coll. 



Rissa brevirostris {Bmcli). 

 (Plate XYII. fig. 3.) 



Larus brevirostris, Elliott, Bep. Pri/hiloff IsL, Birds, no. 553 (1873) ; id. 



Mon. Seal Islands, Alaska, p. 133 (1882). 

 Kissa brevirostris, Baird, Brewer ^- Ridc/w. Water Birds N. Am. ii. p. 207 



(1884); Saunders, Cat. Birds B.' M. xxv. p. 31:2 (1896) ; Sharpe, 



Hand-l. i. p. 143 (1899). 



The five eggs of the Eed-legged Kittiwabe in the Collection are 

 quite inseparable from many of the pale or cream-coloured eggs of 

 R. rissa. They measure from 2-16 to 2-32 in length, and from 

 1-5 to 1'63 in breadth, 



1. Aleutian Islands (/SmtV^.s. 7ms^.). Saunders Coll. 



1. St. George's Island, Bering Sea, Salvin-Godman Coll. 



24th June (Heiishaw Coll.). 

 3. St. (Teorge's Island, June (/£ W. Salvin-Godman Coll. 



Elliott : JIe7ishaw Coll.). 



Family STERCORARIID^. 



Genus MEGALESTRIS, Bik 

 Megalestris catarrhactes (Linn.). 



Lestris catarrhactes, Thieti. Fortpflanz. ges. Viig, tab. Ixxxvi. fi?. 1, a-d 



(1845-54) ; Hewitson, Eggs of Brit. Birds, ii. p. 505, pi. clxii. (1856). 

 Catarracta skua, Baedeker, Eier Eur. Vog. tab. 64. fig. 4 (1855-63). 

 Stereorarius catarrhactes. Dresser, Birds Eur. viii. p. 457 (1875) ; See- 



holwi, Brit. Birds, iii. p. 346, pi. 55 (1885) ; id. Eggs of Brit. Birds, 



p. 118, pi. 37. figs. 3, 4(1896). 

 Megalestris skua, Baird, Breicer 8)- Ridgw. Water Birds N. Am, ii. p. 328 



(1884). 

 Megalestris catarrhactes, Saunders, Cat. Birds B. M. xxv. p. 315 (1896) ; 



Sharps, Hand-l. i. p. 143 (1899). 



The eggs of the Great Skna are for the most part somewhat elon- 

 gated pointed ovals, but a few are broad ovals and others elliptical. 

 They vary considerably in coloration. A small proportion are of a 

 pale bluish white, obsoletely marked with some underlying pale purple 

 blotches. In the majority the ground is greyish buif, yellowish grey 

 olive-buff and olive-brown. The markings consist of spots and 

 blotches, and while in some eggs they are evenly distributed over the 

 shell, in others they show a tendency to collect at the large end. The 



