278 



STEENA DOUGALLI. 



(ROSEATE TERN.) 



Sterna dougalli, Mont. Orn. Diet. Suppl. (1813). 



Thalasscea, Kaup (Sterna dougalli, Mont.), Naturl. Syst. p. 97 (1829). 



Sterna paradisea, Keys. & Bias. Wirbelth. Eur. p. 97 (1840). 



Sterna macdougalli, Macg. Man. Brit. B. ii. p. 233 (1840). 



Hydrocecropis dougalli (Mont.), Boie, Isis, 1844, p. 179. 



Sterna gracilis, Gould, Proc. Zool. Soc. 1847, p. 222. 



% Sterna bicuspis, Licht. Nomencl. Avium, p. 98 (1854). 



Sterna douglasi, Schlegel, Mus. Pays-Bas, Sternse, p. 24 (1863). 



"Sterna tenuirostris, Licht." fide Bias. Journ. fur Orn. 1866, p. 80. 



Stemula Jcorustes, Hume, Stray Feathers, ii. p. 318 (1874). 



Sterne de Bougall, French ; Paradies-Meer-Schioalbe, German. 



Figurce notabiles. 



Werner, Atlas, Palmipedes, pi. 3 ; Naumann, Vog. Deutschl. taf. 251 ; Gould, B. of Eur. 

 pi. 418 ; id. B. of G. Brit. v. pi. 71 ; id. B. of Australia, pi. 27; Audub. B. of Am. pi. 437. 



3 ad. ptil. (est. pileo et nucha nitenti-nigris : dorso et tectricibus alarum cum scapularibus pallide caeruleo- 

 canis : uropygio et supracaudalibus albis cano lavatis : cauda, longissima, alba : remige extimo in 

 pogonio externo nigro, reliquis griseo-canis, in pogonio interno saturate griseis, usque ad apicem 

 albo marginatis : corpore subtus albo, gastrseo rosaceo tincto : rostro ad basin rubro et ad apicem 

 nigro : iride fusca : pedibus rubro- aurantiacis. 



Ad. ptil. Mem. rostro nigro, ad basin fusco : fronte et capitis lateribus albidis : pileo et nucha, fusco-nigris. 

 inconspicue albo notatis : cauda breviore : tectricibus alarum minoribus fusco lavatis : corpore subtus 

 albo. 



Adult in summer (Massachusetts, 30th July). Crown and nape deep glossy black; back and upper surface 

 of the wings delicate bght French grey ; rump and upper tail-coverts white, washed with grey ; rest of 

 the plumage pure white, except that the undersurface of the body is tinged with delicate light rose- 

 colour ; first primary with the outer web black, the rest having this part hoary grey ; inner webs of the 

 primaries dark grey, broadly margined to the tip of the feather with white ; bill red at the base, other- 

 wise black; iris dark brown ; legs reddish orange. Total length about 17 inches, culmen l - 7, gape 1 '95, 

 wing 9 - 0, tail 9'0, the lateral rectrices extending nearly 6 inches beyond the central ones, tarsus - 75. 



Adult in winter. Forehead and cheeks white ; crown and nape brownish black, slightly marked with white ; 

 lesser wing-coverts along the edge brownish ; tail much shorter than in summer, and the underparts 

 without any trace of rose-colour ; otherwise coloured as in the summer plumage. 



Young (Massachusetts) . Crown dirty white with a light brownish tinge, closely marked with blackish, and 



