178 



6. 

 300. 



45. 



Koormouza, Persian Gulf, May. 

 Warba Island, Persian Gulf, 



3rd April (E. A. Butler). 

 North America, 20tli May. 

 Hog Island, Virginia {R. B. Hitz , 



Henshaiu Coll.). 

 Hog Island, 1st July. 

 Cobbs Island, Virginia, 15th June 

 Gobbs Island, 15th June. 

 Cobbs Island, 17th June. 

 Cobbs Island, 17th June. 

 Cobbs Island, 17th June. 

 Cobbs Island, 23rd June. 

 Cobbs Island, 23rd June. 

 Cobbs Island, 23rd June. 

 Cobbs Island, 23rd June. 

 Cobbs Island, 23rd June. 

 Cobbs Island, 27th June. 

 Cobbs Island, 27th June. 

 Cobbs Island, 3rd July. 

 Cobbs Island, 3rd July. 

 Argentine Republic, Dec. 



W. D. Curaming, Esq. [P.; 

 Hume Coll. 



Saunders CoU. 

 Salvin-Godman Coll. 



W. E. D. Scott, Esq. [C.]. 



A. H. Holland, Esq. [C], 



fej 



Genus HYDROPROGNE, Kaup. 



Hydroprogne caspia (Pall.). 



Sterna caspia, Thien. Fortpjlanz. ges. Fb//. tab. Irsxili. fig. \,a-e (1845- 

 54) ; Hewitson, Egys of Brit. Birds, ii. p. 477, pi. exxxi. figs, ii, iii 

 (1856) ; Potts, Tr. N. Z. Inst. ii. p. 76 (1869) ; Dresser, Birds Eur. 

 viii. p. 289 (1877) ; Seebohm, Ibis, 1883, p. 398 ; Baird, Brewer ^ 

 Eidgw. Water Birds N. Am. ii. p. 280 (1884) ; Seebohm, Brit. Birds, 

 iii. p. 268, pi. 47 (1885) ; Oates ed. Hume, Nests ^- Eqgs Ind. B. iii. 

 p. 295 (1890); Sharpe, Ibis, 1891, p. 115; Seebohm, Eggs of Brit. 

 Birds, p. 100, pi. 31. fig. 2 (1896). 



Hydroprogne caspia, Baedeker, Eier Eur. Tog. tab. 24. fis. 1 (1855-68) ; 

 Legge, Birds Cegl. p. 1008 (1880) ; Saunders, Cat. Birds B. M. sxv. 

 p. 32 (1896) ; Sharpe, Hand-l. i. p. 134 (1899). 



Sylochelidon caspia, Gould, Handb. Birds Austr. ii. p. 392 (1865) ; North, 

 Nests ^ Eggs Austr. Birds, p. 352, pi. xx. fig. 3 (1889). 



The eggs of the Caspian Tern are very much larger than the eggs 

 of the Gull-billed Tern, but resemble them closely in shape and 

 coloration. They pass through the same variations as the eggs of 

 that species taken in Europe and Asia. Specimens measure from 

 2'3 to 2-75 in length, and from 1"7 to 1*9 in breadth. 



6. Island of Sylt, N. Frisian Is. 



5. Island of Sylt {Kjcerbollinq). 



1. Island of Sylt {Hargitt Coll.). 



5. Dobrudscha, Black Sea, lOth June. 



1. AbduUa Bank, Persian Gulf, 24th 



April. 



2. Persian Gulf {E. A. Butler). 



Saunders Coll. 

 Salvin-Godman CoU, 

 Seebohm Coll. 

 Seebohm Coll. 

 W. D. Gumming, Esq. [P.]. 



Saunders Coll. 



