144 
ali.en’s naturalist’s library. 
median series browner; bill and feet black. Total length, 7-2 
inches; culmen, o‘6 ; wing, 5-95 ; tail, 27; tarsus, 0-9. 
Adult Female. — Similar to the male. Total length, 7 inches ; 
wing, 6-25. 
Nestling. — Covered with sooty-black down. The inner 
secondaries are narrowly but distinctly edged with white. 
Characters.— The present species has a forked tail like the 
preceding one, but it is a blacker bird, and is recognised by 
the long upper tail-coverts having a broader sooty-black tip 
than in the Fork-tailed Petrel. It differs, moreover, in having 
the base of the outside tail-feathers white. 
Range in Great Britain. — A specimen of this Petrel was 
exhibited by Mr. Boyd Alexander at the meeting of the 
British Ornithologists’ Club, on the 29th of April, 1896. This 
individual had been picked up dead on the beach at Little- 
stone, in Kent, on the 5th of December, 1895. 
Range outside the British Islands. — This Petrel appears to be 
by no means uncommon in Madeira and the neighbouring 
Desertas and Salvage Islands. It is also known from S. 
Helena, and occurs in the Pacific Ocean on the Hawaian 
Islands and in the Galapagos. It was first described by Mr. 
Robert Ridgway, from the Hawaian Archipelago. 
Habits.— Of this species, only described for the first time in 
1882, but little is known. It appears to be more plentiful in 
the Atlantic than in the Pacific Islands, where it was first 
discovered. Its habits are similar to those of the other small 
Petrels. 
Nest. — In crevices of the rocks. 
Eggs. — One only. White, with an ill-defined zone of dry 
blood-coloured spots at the larger end. 
THE FLAT-CLAWED STORM-PETRELS. 
SUB-FAMILY OCEANITINHi. 
In the preceding sub-family the claws are sharp and 
compressed ; in the OceanitincB they are very flat. According 
to Mr. Osbert Salvin, the wing-bones are shorter than the 
