130 DircFtof s Annual Rcpori . 



was presenttd to the Museum and was the only example of the 

 bird secured. Mr. Gay states that it is fairly common in certain 

 cliffs in the mountains. It has been his observation that they 

 live at lower elevations and closer to the sea than does the Uau 

 {.-Estrelata phccopygia). Even when they are found in the same 

 cliffs the Ao keep by themselves in the lower part, and the Uau 

 to themselves higher up. The fact that the native name of this 

 bird has come down to us through all these years, but that the 

 species to which it had been applied by the kanaka naturalists 

 should but so recently come to the light of science speaks much in 

 the favor of those skilled old bird-catchers who had worked out the 

 ornithology of their land with such exacftness. 



Oceanodroma castro (Harct.). Hawaiian Storm Petrel. 



Oeoe. 



No examples of this bird were seen except in the private col- 

 led:ion of Mr. Gay. He has found them many times in suitable 

 cliffs on the higher mountains. 



Phaethon lepturus Lacep. c\: Daun. White-tailed Tropic 



Bird. Koae. 



(3n April 14 our notes state that six tropic birds were seen at 

 different times sailing about the cliffs above the Waimea river, 

 along which stream the path leads for a considerable distance 

 of the way to the mountain house. The splendid cliffs which 

 are in many places hundreds of feet high seem to be ideal nesting- 

 sites for this species which, so far as it has been possible to learn, 

 chooses high cliffs in preference to flat rocks, etc., as is the habit of 

 the Red-tailed Tropic Bird on Laysan and Necker Islands. While 

 no specimens were taken during our stay they were seen in various 

 places at intervals during our visit. The specimens in Mr. Gay's 

 colleclion taken on Kauai, all of which were undoubtably the same 

 as species seen, were the white-tailed form, as are also the skins in 

 the Museum series. 



Anas wyvilliana vSclater. Hawaiian Duck. Koloa 



maoli. 



On the morning of April 23, while riding along the turbulent 

 mountain stream Wailie, Mr. Scale saw a flock of fourteen of these 

 ducks swimming about in a quiet eddy. Three were taken — two 

 males and a female. Later on three more ducks were seen, but 

 none taken. On May 4, while collecting at Mr. Knudsen's place, 

 several flocks were seen in the low swamps. The pair (Museum 

 No. 9424^ , 9423 9 ) are in full plumage. The freshly killed speci- 

 mens have dark hazel eyes ; the bill dark sepia, darkest on the 

 upper mandible, and with a greenish tinge on the sides of upper 



