10 



y' . Ad. sk. 



li . Juv. sk. 



«'. Juv. sk. 

 k'. <S juv. sk. 



i'. Ad. sk. 



m', n', o'. Juv. ; 



p'. Ad. sk. 

 q'. Ad. sk. 



r'. Imm. sk. 



s', t', u'. Juv. sk. 



v'. Ad. sk. 



w', x'. Imm. sk. 



y. Juv. sk, 



z'. Imm. sk. 

 «". Juv. sk. 



b", c". Ad. ; 



d". Juv. sk. 

 c", /". Juv. ; 



ff". Imm. sk. 

 h", i". Ad. sk. 

 A;". Ad.; /". Juv. sk. 

 m". Juv. sk. 



n", o". Imm. sk. 

 p". Juv. sk. 



Zoulla, Abyssinia, June 13 Tweeddale Coll. 



( W. Jesse). 



Suakin. Capt. R. H. Pentou 



[P.]. 



Bogos, Abyssinia {Esler). H. Saunders Coll. 



Ilambantotta, Ceylon, July H. Saunders Coll. 



( W. V. Legge). 



Comilla, Tippera, Eastern Hume Coll. 



Bengal {V. Irvxin). 



Pegu, Sept.-Oct. (E. W. O.). Gates CoU. 



South Andamans, April 16 Hume Coll. 



{F. A. de Roepstorff). 

 Malacca {S. Pinwill). 

 Java. 



Java (winter pi., Horsfield). 

 Java. 



(Types of H. grisea of Horsfield and of Gray's list.) 

 Baram Pt., N.Borneo, Oct. A. Everett, Esq. [C.J. 



{A. E.). 

 Celebes. 

 Mindanao, Philippines, Oct. 



{E. L. Moseley). 

 Canton, China \S. Bligh). 



Tweeddale Coll. 

 India Museum [P. 

 India Museum fP.' 

 India Museum [P 



Seebohm Coll. 

 Steere Expedition. 



Tweeddale Coll. 



Canton, China (»S'. Bligh). Seebohm Coll. 



Takoo, China (Stoinhoe). 

 Cape York, N. Australia. 

 Cape York, N. Austraha, 



Nov. 9. 

 N.W. Australia. 

 Barbados, Get. 24 {H. W.F.). 



Seebohm Coll. 

 Gould Coll. 

 Voy.H.M.S.' Rattle- 

 snake.' 

 Dr. J. R. Elsey [P.]. 

 Col. H. W. Eeilden 

 [R]. 



2. Hydrochelidon hybrida. 



Sterna hybrida, Pcdlas, Zoogr. Rosso-Asiat. ii. p. 3.38 (1811: 

 S. Volga, and Sarpa) ; Keys. u. Bias. Wirb. Eur. pp. xcviii, 248 

 (1840) ; MUhle, Orn. Griechenl. p. 147 (1844) ; Degland, Orn.Eur. 

 ii. p. 353 (1849) ; Heugl. Syst. Uebers. p. 70 (1856 : Egypt & Nubia, 

 resident) ; Linderin. Vog. Griechenl. p. 180 (1860) ; Schleq. Mus. 

 P.-B., SterntB, p. 33 (1863) ; Writjht, Ibis, 1864, p. 153 (Malta) ; 

 Marling, Hcmdb. Br. B. p. 168 (1872) : Hume, Sir. F. i. p. 281 

 (1873: Sind) ; R. M. Adam, Sir. F. i. p. 403 (1873: Sambhur 

 Lake) ; Oates, Str. F. iii. p. 348 (1875) ; Blanf. East. Pers. ii. 

 p. 294 (1876) ; Milne-Edwards ^ Grandidier, H. N. Madag., Ois. 

 pi. 649 (1882: osteology); Seebohm, Ibis, 1882, p. 231 (Volga 

 delta) ; id. Brit. B. iii. p. 260 (1885) : Alleon, Ornis, 1886, p. 424 

 (Dobrudscha, breeding) ; Stevenson ^ Sonthw. B. Norfolk, iii. 

 p. 306 (1890) ; Oates, 2nd ed. Hwue's Nests if Eggs Ind. B. iii. 

 p. 305 (1890) ; Sharps, Ibis, 1891, p. 116 (Fao) ; Jdckel u. Bias. 

 Vog. Bayerns, p. 374 (1891). 



Sterna leucopareia, Natterer, in Temm. Man. d'Orn. p. 746 (1820) ; 

 Meyer, Taschenb. iii. p. 189 (1822); Boie, Ms, 1822, p. 563; 

 Brehm, Beitr. Vogelk. iii. p. 674 (1822) ; Licht. Verz. Doubl. p. 81 

 (1823 : Nubia) ; Brehm, Lehrb. p. 694 (1824) ; IVerner, Atlas, 

 Palmipedes, pis. 10, 11 (1828) ; Sari, Orn. Tosc. iii. p. 92 (1831) ; 

 Gould, B. Eur. v. pi. 424 (1837) ; Naum. Vog. Deutschl. x. p. 168, 



