Tarsus longer than in "Thalassidroma "; 1st phalanx of middle toe as long as next two combined.
Oceanites oceanicus (Kuhl). WILSON'S PETREL. ? Resemble "T. pelagica" but larger, and upper tail coverts uniform white. Bill, legs and feet black ; basal two thirds of web between toes yellow. Wing 140-158. Tarsus
Breeds.—Antarctic regions, north to S. Georgia and Kerguelen Land. At other times found in almost all seas. Rare visitor to W. European Coast, Canary Islands, Madeira.