142 LIST OF DirRNAL BIRBS OF PREY. 



with some exceptions, which probably indicate (when con- 

 sidered as a whole) that it is a younger specimen, and which 

 I have thus noted : — In no. 2 the dark cross bars on the pri- 

 maries are only rudimentary ; there is a slight rufous tinge 

 on the sides of the throat and neck, also on the nape and on 

 the least wing-coverts near the carpal joint. In no. 2 all the 

 feathers of the underparts are browner than in no. 1 ; those 

 on the throat are white with rather broad brown centres ; on 

 the upper breast the feathers are similar, but a little darker; 

 those of the lower breast are yellowish white, with large and 

 conspicuous brown shaft-marks ; on the abdomen the feathers 

 are yellowish brown, largely barred and tipped with dark 

 brown, and the crissum is barred with alternate bands of dark 

 and of rufous-brown. In specimen 2 the number of cross 

 bars on the central rectrices is nine, including the subter- 

 minal one, which has been almost obliterated by wear and 

 weather, but on a new rectrice which has appeared the bars 

 are much less distinct than on the older. In no. 2 the under 

 wing-coverts, excepting the lowest row, and also the axillaries 

 are much darker and more rufous than in no. 1 ; and this 

 colour extends in no. 2 to the edge of the wing, where the 

 corresponding feathers in no. 1 are of a nearly immaculate 

 cream-colour. 



I may add that, in a communication which I recently 

 received from Mr. S. B. Dole, of Honolulu, that gentleman, 

 referring to this species, writes that ''it frequents the ocean 

 and builds in inaccessible places.^' 



