NORTH AMERICAN BIRDS. 57 



collection a set of one egg of this rare and little known species. The eeg is pure 

 white in color with no marks of any kind, elliptical oval in shape and measures 

 1.44x1.08. It was taken by Mr. Anthony on San Benito Island, Lower California, 

 July 25th, 1896. The egg was deposited on bare ground at the end of a burrow about 

 three feet long. 



108. ASHY PETREL. Oceanodroma homochroa (Coues.) Geog. Dist. Coast of 

 California. 



108. NEST AND EGG OF THE ASHY PETREL ON THE FARALLONE ISLANDS. (From 



Mr. A. M. Ingersoll first found the egg of this species on South Farallon in June, 

 1885. He described the egg as dull creamy-white, with a circle of reddish spots 

 around the large end, so fine as to be almost indistinct. The large end is somewhat 

 flattened, like the large end of an acorn. It measures 1.18x.94.* This, Mr. Emerson 

 informs me, is the rarest of the birds that breed on the Farallons; nesting anywhere 

 in cavities under boulders, laying a single egg. v Two eggs collected June 15, 1885, 

 and June 8th, 1886, measure respectively 30x23, 31x23.5 mm.f The following on the 

 Ashy Petrel is by Mr. C. Barlow in The Museum for December, 1894 :\ "They nest 

 throughout the island preferably beneath stone piles on the ground. They fly about 

 only at night. One egg is laid which is of a creamy white color both before and after 



* Ornithologist and Oologist, Vol. XI, p. 21. 

 t 1.18X.91, 1.22x.93 inches. 



t Mr. Barlow has also contributed a lengthy article on the nesting of the Ashy Petrel 

 ID The Nidologist for August, 1894. 



