58 



NBSTB AND BOGS OF 



being blown. It is usually but very faintly spotted about the large end and often 

 wholly unmarked. I have but one egg which is well marked and it has a wreath 

 about the large end composed of irregular dots of light reddish-brown. The eggs of 

 this Petfel average considerably smaller than those of Leache's. The measurements 

 of seven eggs are as follows, the extreme sizes being given first: 1.26X.89, 1.22x.89, 

 1.20X.89, 1.20X.87, 1.19x.86, 1.13x.89 and l.llx.87 inches." 



108. 1. SOCOBBO PETREL. Oceanodroma socorroensis Townsend. Geog. 

 Dist. — Coasts and Islands of Lower California. 



This is a new species of petrel just added to the avifauna of North America. A 

 specimen of the egg of this bird is in the extensive collection of Mr. Crandall. It 

 was collected by Mr. Anthony, the well-known ornithologist. Mr. Crandall says: 

 "My set of this species is pure white with a ring of pale lavender or pinkish specks 

 around the large end, elliptical ovate in shape, and measures 1.22x.85. It was 

 collected by Mr. A. W. Anthony on Coronado Island, Lower California, July 10th, 

 1896, and was laid on the bare ground at the end of a burrow about three feet long." 



109. WILSOH'S PETREL. Oceanites oceanijus (Kuhl.) Geog. Dlst.— Atlantic 

 and Southern Oceans. . 



Wilson's Stormy Petrel is one of the best known and co'mmonest of the smaller 



petrels. It is to be met with nearly everywhere over the entire watery surface of 



,,^. the world — far north in the 



ley regions of the Arctic seas » 

 and south to the sunny isles 

 of Southern oceans. Its gen- 

 eral habits are the same as 

 those of Leach's Petrel. Dr. 

 J. H. Kidder found it on Ker- 

 guelen Island, southeast of 

 Africa. He had previously 

 seen them at the sea coast oft 

 the Cape of Good Hope, and, 

 on December 14, saw them out 

 by day feeding on the oily 

 matter floating away from the 

 carcass of a sea-elephant. The 

 hirds, he says, frequent the 

 rocky parts of hillsides, and, 

 flitting about like swallows, 

 Kidder remarks that he never succeeded in 

 Eaton, who found one on Thumb Moun- 



109. Wilson's Stormy Petrel, 



they catch very minute insects. Dr, 



finding the egg, but learned from Rev. Mr 



tain December 8, that this species nested under large rocks not far from the beach. 



The egg found was white. The species was supposed to nest among and under the 



rocks, habitually, at considerable elevation above the sea. 



110. WHITE-BELLIED PETREL. Cymodroma grallaria (Viell.) Geog, 

 jjiat.— Tropical ocpans; accidental on the icoast of Florida. 



A single instance of this petrel having been taken on the coast of Florida en- 

 titles it to a place in the North American avifauna. We know nothing regarding 

 (ts nldiflcation. 



