MONOGRAPH OF THE PETRELS. 



of the upper parts and the white of the under parts. P. auricularis has the bill 

 entirely black and also stouter." 



On comparing this description with the three specimens of P. auricularis in the 

 Rothschild Collection, I find that the best character for the separation of P. newelli is 

 apparently the white central under tail-coverts (these being black in P. auricularis), and 

 the absence of mottling on the sides of the neck. 



In a letter lately received from Mr. W. Alanson Bryan, he tells me that, while 

 collecting in the mountains on Molokai in May and June, he found a poorly mounted 

 example of P. newelli in a native cottage in Wailau Valley. The owner had captured it 

 sitting in the grass near his house, and kept the skin as a curiosity. The birds nest 

 in the high cliffs at an elevation of from 2000 to 4000 feet, in holes under the roots of 

 trees, amongst the undergrowth and vines, and are so difficult to locate that they have 

 to be searched for with specially trained dogs. Although Mr. Bryan went with a party 

 of natives and dogs to the places where they had procured birds the year before, he was 

 unsuccessful in finding a single specimen. The Mongoose having made its way into the 

 island, the species is likely to be rapidly exterminated there. 



I have not seen an example of P. newelli, and my description is therefore derived 

 from Mr. Henshaw's article (I.e.). 



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