224 STBRCOKAKIIDJ.. 



3. Scarborough. "W. Eooke, Esq. [P.]. 



3. Flamborough (Hargitt Coll.). Seebohm Coll. 



3. Flamborouffh (H. Seebohm). Seebobm Coll. 



9. Lundy Island, Bristol Channel, Saunders Coll. 



June. 



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



6. -Svaerholt, Finmark, 16th June. Seebohm Coll. 



Rissa brevirostris (Bruch.). 

 (Plate XVII. fig. 3.) 



Larus brevirostris, Blliott, Rep. Pryhiloff Isl., Birds, no. 553 (1873) ; id. 



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

 Eissa brevirostris, Baird, Brewer 8f Ridg%o. Water Birds N. Am. ii. p. 207 



(1884) ; Samders, Cat. Birds B. M.. xxv. p. 312 (1896) ; S/iar:ix, 



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



The five eggs of the Eed-legged Kittiwake in the Collection arc 

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

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

 1-5 to 1-63 in breadth. 



1. Aleutian Islands ((SVmVAs. 7ms^.). Saunders Coll. 



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



24th June (Henshaw Coll.). 

 3. St. George's Island, June {II. W. Salvin-Godman Coll. 



Elliott : Henshaw Coll.). 



Family STEECORARIIDJE. 



Genus MEGALESTEIS, J5p. 



Megalestris catarrhactes (Linn.). 



Lestris catarrhactes, Thien. Fortp/lanz. ges. Vog. tab. Ixxxvi. fis. 1 , a-d 

 (1845-54) ; Hewitson, Eggs of Brit. Birds, ii. p. 605, pl. clxii'. (1856). 



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



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

 bohm, Brit. Birds, iii. p. 346, pl. 55 (1885) : id. Eggs of Brit. Birds, 

 p. 118, pl. 37. figs. 3, 4 (1890). 



Megalestris skua, Baird, Brewer &■ Ridgw. Water Birds N. Am. ii.p. 328 

 (1884). ^ 



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

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



The eggs of the Great Skua 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 tlie ground is greyish buff, yellowish grey 

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

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

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



