BIKDS OF NORTH AND MIDDLE AMEEICA. 



555 



Adult male.—W'mg, 214.5-215 (214.7); tail, 112.5-113 (112.7); 

 exposed culmen (one specimen only), 41 ; tarsus, 20-20.5 (20.2) ; middle 

 toe, 26-28 (27). « 



Adult female. — ^Wing, 222; tail, 116; exposed culmen, 42.5; tarsus, 

 20; middle toe, 27.5.^ 



Islands of Caribbean Sea and middle Atlantic Ocean, from coast 

 of British Honduras (South\vest-of-all Cay; Glovers Reef) to St. 

 Paul Rocks and Fernando Noronha, off Brazil, and Ascension 

 Island and Tristan da Cunha, off southern Africa. 



A[nous] tenairoitris (not Sterna tenuirostris Temminck, 1823) Sai.vin, Ibis, 1864, 

 383 (South west-of-all ('ay, Brit. Honduras). 



Anous tenuirostris Coues, Ibis, 1864, 393 (Glovers Reef, Brit. Honduras; crit.); 

 Birds Northwest, 1874, 710, footnote, part (synonymy). — Salvin, Ibis, 

 1866, 200 (Glovers Reef). — Sclater and Salvin, Proc. Zool. Soc. Lend., 

 1871, 566, part (coast of Honduras; Trinidad; monogr.). 



[ilnoits] tenuirostris Sclater and Salvin, Nom. Av. Neotr., 1873, 147. 



Anous melanogenys (not of Gray, 1846) Saunders, Proc. Zool. Soc. Lond., 1876, 

 670, part, pi. 61, fig. 2 (coast of Central America; monogr.); 1877, 798, part 

 (St. Paul Roclcs, Atlantic Ocean; Tristan da Cunha Island); Voy. 'Chal- 

 lenger,' ii, pt. viii, 1881, 137, part (St. Paul Rocks; Tristan da Cunha). — 

 Penrose, Ibis, 1879, 280 (Ascension Island; habits; descr. eggs). — Baird, 

 Brewer, and Ridgway, Water Birds N. Am., ii, 1884, 324, part (coast 

 Honduras). 



A[nous'\ melanogenys Ridgway, Man. N. Am. Birds, 1887, 48, part ("Gulf coast 

 of Mexico"). 



Anous leucocapillus (not of Gould, 1845) Saunders, Proc. Zool. Soc. Lond., 1876, 

 670, part, pi. 61, fig. 3 (monogr.).— Stone, Proc. Ac. Nat. Sci. Phila., 1894, 

 117, part (Brit. Honduras; crit.). 



a Two specimens, from Glovers Reef, British Honduras. 

 f> One specimen, from Glovers Reef. 



Locality. 



Wmg. 



Middlo 

 toe. 



Two adult males from British Honduras 



Twenty-six males from Clipperton and Cocos Islands ( Af. m. 

 diamesus) 



Seven adult males from Hawaiian Islands ( 3/. m. melanogenys) . 

 One adult male from Philippine Islands (M. m. rvorcesteri) 



FEMALES. 



214.7 



232 



218.1 



218 



222 



One adult female from British Honduras 



Thirty adult females from Clipperton and Cocos Islands ( M. m. 



diamesus) ' 229 



Four adult females from Hawaiian Islands ( M. m. melanogenys) . 211. 4 



Two adult females from Pliilippine Islands (M. m. icorcesteH)..] 213 



Two adult females from Kermadec Island {M.m. .) j 217.7 



27.8 

 26.4 

 30 



27. 



27.5 

 25.2 

 28.5 

 28.2 



(Measurements of M. m. diamesus are from Gifford, Proc. Calif. Acad. Sci., 4th 3er., 

 ii, 1913, 32, 113.) 



