1. nYDROCnELIDON. 13 



Hydrochelidon margiuata, Blyth, J. A. S. Beng. xv. p. 373 (1846 : 



Hoogly). 

 Hydvoclielidon javanica, Gray, Gen. B. iii. p. (560 (1846). 

 Hydrochelidon similis, Gray, Gen. B. iii. p. 660 (1846). 

 Hydi-ochelidon indica, Gray, Gen. B. iii. p. 660 (1846) ; Blyth, Cat. 



B. Mus. As. Soc. p. 200 (1849) ; Bp. C. It. xlii. p. 773 (1856) ; 



Irh)/, Ibis, 1861, p. 246 (Oude & Kumaon) ; Gray, Cat. M. etc. 



Nepal pres. Hodys. p. 78 (18(;3) ; Sivinh. P. Z. S. 1863, p. 328 



(Formosa) [not then known from China]; Jerdon, B. Ind. iii. 



p. 837 (1864) ; Gray, Hand-l. B. iii. p. 121 (1871) ; Hume ^- 



Hendvrs. Lahore to York. p. 301 (1873: Kashmir); Adam, Str. 



F. ii. p. 439 (1874 : Chota Nagpur) ; Hume, Nests &,• Eggs Ind. 



B. p. 648 (1875) ; Blyth ^- Wald. B. Burm. p. 163 (1875) ; Butler, 



Str. F. iv. p. 32 (1876 : N. Guzerat) ; V. Ball, Str. F. vii. p. 233 



(1879) ; Frjev. in Rowley's Orn. Misc. iii. p. 145 (1878 : breeds in 



Hoang-ho Valley, Tsaidemin Nor) ; Marshall, Ibis, 1884, p. 425 



(Chamha). 

 Hydrochelidon meiidionalis, Brehm, Vogelf. p. 351 (1855). 

 Hydrochelidon leucogenys, Brehm, Naum. 1855, p. 295 ; id. Vogelf. 



p. 350 (1855). 

 Hydrochelidon nilotica, Brehm, Namn. 1855, p. 295 ; id. Vogelf. 



p. 351 (1855). 

 Hydrochelidon delalandii, Bp. Compt. Rend. xlii. p. 773 (1856) * ; 



Gray, Hand-list, iii. p. 122 (1871). 

 Sterna" innotata, Beavan, Ibis, 1868, p. 404 (imm.) ; Gray, Hand-list, 



iii. p. 119, no. 11043 (1871). 

 Hydrochelidon javanica. Gray, Hand-list, iii. p. 122, no. 11073 (1871). 

 Pelodes hybrida, Gurney, Andersson's B. of Bamara-land, p. 362 



(1872) ; Olphe-Gall. Contr. Faun. Orn. Fur. Occid. fasc. xi. p. 41 



(1886); Heine S,- Reichen. Nomencl. Mus. Hein. p. 356 (1890). 

 Hydrochelidon leucopareius, Severtz. Turkest. Jevotn. p. 70 (1873). 

 Sterna melauogastra, Salvad. Ucc. Borneo, p. 377 (1874) ; O. St. 



John, Ibis, 1889, p. 180 (Quetta) ; Vordei-m. Nat. Tijdschr. 



Nederl. Ind. xlir. p. 207 (1884: Java); id. op. dt. xlix. p. 420 



(1889: Sumatra). 

 Sterna macroura, Sintenis, J. f. O. 1877, p. 68 (Dobrudscha, 



"floating nests"). 

 Hydrochelidon nigra, Biddtdph, Ibis, 1881, p. 102 (Gilgit) [cf. Scully, 



t. c. p. 594]. 

 Pelodes indica, Heine Sf Reichen. Nomencl. Mus. Hein. p. 356(1890). 

 Pelodes javanica, iid. loc. cit. 



Adult male in hrefding-plumarje. Forehead, crown, and nape 

 deep black ; from the gape to the nape a conspicuous white streak ; 

 upper parts slate-grey, darker on the primaries, except when these 

 are new and frosted ; shafts white ; inner webs of outer pairs of 

 primaries white on the upper and greater part of the inner webs ; 

 upper tail-coverts grey ; tail-feathers grey, with white outer webs 

 to the outside pair ; chin white or very pale grey ; throat grey, 

 darkening on the lower part ; breast dark slate-grey, which deepens 

 into black on the abdomen and flanks ; vent and under tail-covcrts 

 white; under wing-covorts white ; axillaries white with a faint 

 tinge of grey : bill blood-red ; feet vcrmiKon (drying to orange- 



* Type examined. 



