Petrels from the North- East Pacific Ocean. 599 



as in the preceding specimen, and chin wliitish with ashy 

 freckling and the breast regularly freckled ; all the rest of 

 the under-surfaee down-covered save the under tail-coverts, 

 which have whitish tips showing ; the down is ashy, and of 

 a paler shade in the centre of the abdomen ; the back and 

 wing-coverts are exactly of the same colour as the above- 

 mentioned bird with similar broad white tips ; wings very 

 short and dark; feet showing dark edf>es and joints; the 

 bill long and very thin, sides dark yellow-horn, rest very 

 dark ; nostrils distinctly on each side of culmen ridge, 

 which is clearly separated from the laterals. Chord of culmen 

 o9'5 mm. 



An example from '' Pescadores Island, 15th May, 1909, 

 Pvjfjinus cuneatus," has the culmen 39, wing 287, tail 136, 

 tarsus 148, mid-toe 50 mm. It agrees very closely with 

 the first-mentioned specimens. 



In the British Museum is a specimen with the data " $ , 

 5th June, 1890, P. A. Hoist, Sulphur I., Bonins," and the 

 soft parts are given in detail thus : " Bill light grey, except 

 upper part from groove and hooked tip black, also upper part 

 (edges) and hook of lower mandible black. Tarsi and feet 

 whitish pink, somewhat dusky at the joints on the outer 

 side. Irides faint brown." 



This series is practically typical, and it is noteworthy that 

 no dark birds occur. The downy young with the freckled 

 under surface and the fully grown immature show the same 

 feature, while all the adults are pure M'hite below : this is 

 very interesting, but gives no clue to the dimorphism 

 apparently found on San Benedicto Island, but suggests 

 further inquiry at that place. It might be observed that 

 the Benin Island form has a very slender tarsus. We 

 would again emphasize our ignorance of Pacific Ocean 

 breeding Petrels by stating that no white-breasted " cuneata. " 

 is known from the south Pacific Ocean, but a white- 

 breasted species called Puffinus bulleri Salvin is rarely known 

 from New Zealand waters, its breeding place being unknown. 

 A similar form has recently occurred off the Califoruian 

 coast, but its breeding-place is also unknown. The New 



