'198 PROCEEDINGS OP THE ACADEMY OF 



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feather shows a trace ; the whole head and upper throat are uni- 

 form smoky blackish-brown. 



No. 15,667, Mus. Smiths., adult, mounted, same locality as the 

 last, and perfectly similar : another example of Apt. longicauda, 

 Peale. 



Nc 793, Mus. Acad. Phila., adult, % ," lies Adelaides." En- 

 tirely similar to the foregoing. Tail 6.25 inches. I count 15 

 rectrices, and probably there were 16; none are white-edged in 

 this species as in lasniata. 



No. 2191, Mus. Acad. Phila., " New Zealand?" Yery smilar to 

 the last ; but apparently not quite adult, as the bill is weaker, and 

 there are white specks in the dusky part of the throat. 



No. 793fo's, Mus. Acad. Phila., received with No. 693, and from the 

 same locality. An immature bird, in the plumage of "Dasyrham- 

 phus herculis." The throat is white to the bill, but there are a few 

 scattered blackish feathers, showing incontestably that this part 

 would have become dark. 



Although we repose great confidence in the judgment of the 

 accomplished ornithologist who latety proposed to separate from 

 adeliee a specimen in Count Ercole Turati's collection, yet we 

 cannot hesitate to refer E. herculis to this species, even without 

 examining the t3'pe. For according to Dr. Finsch's own showing, 

 the only tangible difference lies in the white throat, which is surely 

 a mark of immature plumage, however adult the specimen may 

 otherwise appear. Every one of the black-throated penguins 

 (all the family except minor and antarcticus) have the throat white 

 at first ; and in several cases we have actually traced the change, 

 by insensible degrees. The British Museum examples, with white 

 throat, lately printed by Mr. Gray as "herculis," were never sus- 

 pected to be aught else than 3 7 oung adeliee, before Dr. Finsch's 

 article appeared. Dr. Schlegel reports a precisely similar " in- 

 dividu au premier plumage, de taille moins forte et offrant la gorge 

 blanche, terre Victoria, acquis in 1863 ;" and we recognize the 

 same condition in this one of the Academy's specimens. 



The Aptenodytes longicauda of Peale was promptly identified 

 with adelise by Cassin ; and Mr. Gray soon recognized the same 

 species in his Pygoscelis brevirostris. 



