EISA. 223 



Genus RISSA, Stephens. 



Rissa rissa (Linn.). 



J^arus tridactylus, Thien. Furipfinnz. yes. J'fiff. tab. xc. fig. ], a-h 



(1845-54); Hewitson, E<jgs of Brit. Birth, ii. p. 49;J, pi. cxxxvii. 



(1856) ; Dixo7i, Ibis, 1885, p*. 87 ; Seebohm, Brit. Birds, iii. p. 340, 



pi. 50 (1885); id. Eygs of Brit. Birds, p. 114, pi. 32. figs. 1, 2 



(18!)6) ; id. Birds Japan. Emp. p. 294 (1890). 

 Kissii tridactyla, Baedeker, Eier Enr. Tog. tab. 40. fig. 2 (1855-G3) ; 



Dresser, Birds Enr. yiii. p. 447 (1878) ; Baird, Bretcer 4" Ridqw. 



Water Birds N. Am. ii. p. 202 (1884) ; launders. Cat. Birds B.M. 



XXV. p. 305 (1896). 

 llissa tridactyla pollicari.?. Nelson, Report Nat. Hist. Alaska, p. 49 



(1887). 

 llissa rissa, Skarpe, Ilund-l. i. p. 143 (1899). 



The eggs of the Kittiwakc are of a pointed oval form and are 

 most varied in their coloration. The ground ranges from cream- 

 colour to pinkish buft', and from olive-grey to olive-brown. The 

 surface markings are of rich chocolate-brown, reddish brown or 

 yellowish brown, and the underlying markings, which are extremel)"- 

 conspiciious in many eggs, are grey or pale purple. The markings 

 on some specimens are very small, on others large, consisting of 

 huge blotches. iSomctimes the markings are evenly distributed 

 over the shell ; at others tliey are chiefly collected together at the 

 large end to form a cap or zone. A few eggs are covered with a 

 beautiful tangled network of lines; in fact the patterns on the 

 Kittiwakes' eggs are infinite in number, and it is difficult to get 

 half-a-dozen examples to match each other. They measure from 

 2"1 to 2-4 in length, and from 1-5 to 1*75 in breadth. 



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



24th June (7/. W. Elliott : Hen- 



shaic Coll.). 

 3. Kurile Islands, Japan (If. J. Snote). Seebohm Coll. 

 3. North Iceland, (jth June (6". Seebohm Coll. 



Steinike : Haryitt Coll.). 

 3. North leelaud, 6th June (C. .S'..- Seebhom Coll. 



Hargitt Coll.). 

 2. Tarcie Islands, .SOth May (//. C. Seebohm Coll. 



Miiller: Hargitt Coll.). 

 7. Faroe Islands, 6th June (H. C. M. : Seebohm Coll. 



Hargitt Coll.). 



2. Fair Island, Orkneys. E. M. NeLson, Esq. [P.]. 

 16. St. Kilda, Hebrides, I4th June Seebohm Coll. 



(C. Di.ion). 



3. Bass Rock, Firth of Forth (Hargitt Seebohm Coll. 



Coll.). 

 2. Rathlin Island, Ireland. Saunders Coll. 



2. South Saltees, Ireland, IGth June Seebohm Coll. 



(R. J. Ussher). 

 2. South Saltees, 16th June (R. J. U.). Seebohm Coll. 

 13. Farn Islands, June (H. Seebohm). Seebohm (^oll. 

 6. The Pinacles, Farn Islands, June Seebohm Coll. 



(O. Saluin). 



