540 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Sterna grisea Horsfield, Trans. Linn. Soc, xiii, 1821, 199 (Java; type in coll. 



Brit. Mus.). — Stephens, in Shaw's Gen. Zool., xiii, pt. 1, 1825, 159. 

 Hydrochelidon grisea Boie, Isis, 1844, 184. — Gray, List Birds Brit. Mus., Anseres, 



1844, 180. 

 n[ydrochelidon] grisea Gray, Gen. Birds, iii, 1846, 660. 

 HydrocTielidon hucoptera grisea Mathews, Birds Australia, ii, pt. 3, Sept. 20, 



1912, 312 (China to n. Australia; New Zealand); List of the Birds of Australia, 



1913, 44. 



Hydrochelidon leucourus Seyffeutitz and Bhehm, Isis, 1833, 985. 



Hydrochelidon nigra (not Sterna nigra Linnaeus) Gray, List Birds Brit. Mus., 

 Anseres, 1844, 180; Cat. Brit. Birds, 1863, 243.— Blyth, Cat. Birds Mus. 

 Asiat. Soc, 1849, 291. — Jerdon, Birds India, iii, 1864, App.,875.— Degland 

 and Gerbe, Orn. Eur., ii, 1867, 466. — Loche, Expl. Sci. Alger., Ois., 1867, 

 207.— Salvador:, Faun. Ital., Ucc, 1871, 274; Ucc. Borneo, 1874, 372.— 

 Shelley, Birds Egypt, 1872, 301; Ibis, 1888, 306 (Lamu, e. Africa).— 

 Gurney, in Andersson's Birds Damara-Land, 1872, 363. — Heugltn, Orn. 

 N. O.-Afr., Bd. ii, pt. 2, 1873, 1447.— Coues, Birds Northwest, 1874, 708.— 

 Walden, Trans. Zool. Soc. Lond., viii, 1874, 103 (Celebes).^pRJEVALSKY, 

 Rowley's Orn. Misc., iii, 1878, 145 (Tsaidcmin Lakeand basin of Lake Hauka, 

 Mongolia, breeding). — Finsch, Verb. z.-b. Ges. Wien, xxix, 1879, 280 (Chinese 

 Altai, 5,000 ft.).— Bolau, Journ. fiirOrn., 1882, 342 (Dauria).— Blasius (W.), 

 Verb. z.-b. Ges. Wien, xxxiii, 1883, 73 (s. e. Borneo); Ornis, 1888, 633 

 (Great Sanghir Island). — Vorderman, Nat. Tijdschr. Nederl. Ind., ii, 1892, 

 413 (Java). 



H[ydrochelido7i] nigra Gray, Gen. Birds, iii, 1846, 660. 



[Hydrochelidon] nigra Bonaparte, Compt. Rend., xiii, 1856, 773. — Gray, Hand- 

 List, iii, 1871, 121, no. 11070. 



Sterna nigra Schlegel, Mus. Pays-Bas, vi, no. 24 (Sternae), 1864, 31. ^Holds- 

 worth, Proc. Zool Soc. Lond., 1872, 481 (Ceylon).- — Legge, Journ. Asiat. 

 Soc. Bengal, 1874, 58 (Ceylon).— Blanford, East. Persia, ii, 1876, 290.— 

 Blasius and Nehrkorn, Verz. z.-b. Ges. Wien, xxxii, 1882, 432 (Amboina; 

 see Ibis, 1883, 212). 



Hydrochelidon niger Severtsov, Turkestan. Jevotnie, 1873, 70 (Turkestan, up 

 to 10,000 ft.). 



Hydrochelidon hybridus (not Sterna hyhrida Pallas) Taczanowski, Journ. fiir Orn., 

 1873, 111; 1874, 337 (Dauria; see Bull. Soc. Zool. France, 1876, 262). 



Hydrochelidon subleucoptera Brehm, Vogelf., 1855, 350 (n. e. Africa, rare in s. 

 Europe). 



Hydr[ochelidon] subleucoptera Brehm, Naumannia, 1855, 295. 



Hydrochelidon javanica (not Sterna javanica Horsfield) Swinhoe, Ibis, 1860, 68; 

 1861, 345 (n. China). 



Genus PH^^TUSA Wagler. 



Phaetusa Wagler, Isis, xxv, 1832, 1224. (Type, by original designation and 

 monotypy. Sterna magnirostris Lichtenstein=*S'. chloripoda Vieillot.) 



Phaethusa (emendation ) Agassiz, Nomencl. Zool., Index, 1846, 283. 



Phoctusa (emendation) Bonaparte, Compt. Rend., xiii, 1856, 772. 



Thalassites Swainson, Classif. Birds, ii, 1837, 373. (Type, by monotypy, /Sier^ifl 

 magnirostris Lichtenstein=*S'. chloripoda Vieillot.) 



Large Sternidse (wing 266-312 mm.) with nostril far anterior to 

 latero-frontal antia, anterior line of frontal feathering not indented 

 at base of culmen, and tail much less than half as long as wing> 

 forked for only about one-fourth its length. 



