298 



AVIFAUNA OF LAYSAN, ETC. 



specimens in the latter plumage show no trace of brown colour on the tail, so conspicuous in 

 Sula piscatrix websteri from the Eastern Pacific (of. Nov. Zool. vi. p. 177, 1899). Even in 

 birds in the second year's plumage, where the back and wings are still practically all brown 

 in colour, the tail shows a strong admixture of white. 



The nestling is covered with uniform white down. The bare parts of the pullus are : 

 " Feet of a dark ivory-colour, bill black, lores and face greyish blue." 



On p. 28 I have said that the photograph showing a nest of this bird in a palm-tree is a 

 picture of the trees on Laysan mentioned by Kittlitz. This, I am sorry to say, is an error. 

 The plate having been taken by Mr. Williams on Lehua, and not being separately labelled, 

 I thought it formed part of the Laysan series with which it was sent to me. 



As a matter of fact no living palm-trees exist at present on Laysan, though Prof. 

 Schauinsland informs us that the remains of stumps and roots prove them to have been at 

 one time rather numerous on that island. The palm on Mr. Williams's photograph is 

 Fritchardia gaudichaudi, and presumably those formerly growing on Laysan belonged to 

 this species also. 



