S3 



NBSTB AND EO&S OF 



being blown. It is UBually 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 Petrel average considerably smaller than those of Leache's. The measurements 

 of sev-en eggs are as follows, the extreme sizes being given first: 1.26x.89, 1.22x.89, 

 1.20X.89, 1.20X.87, l,19x.86, 1.13x.89 and l.llx.87 inches." 



108i 1. SOCOBBO PETKEL. OceqnotLroma 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 Calif ornia, . July 10th, 

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



Oceanites oceanijus (Kuhl.) Geog.' Dist. — ^Atlantic 



109. WILSON'S PETREL, 

 and Southern Oceans. 



Wilson's Stormy Petrel is one of the best known and commonest 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 l^each's Petrel. Dr. 

 J. H. Kidder found it on Ker- 

 guelen Island, southeast of 

 Africa. He had previously 

 seen them at the sea coast oH 

 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 

 birds, he says, frequent the 

 rocky parts of hillsides, and, 

 flitting about ' like swallows, 

 they gatch very minute insects, Dr. Kidder remarks that he never succeeded in 

 finding the, egg, but learned from Rev. Mr. Eaton, who found one on Thumb Moun- 

 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. 



109. Wilson's Stormy Petrel. 



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

 Dist. "Tropical oceans; accidental on the coast 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 

 its nidification. 



