Abstract

(…) I am enabled to add a new species, through the kindness of Mr. William H. Dall, who has placed at my disposal his notes upon and drawings of two specimens of a peculiar porpoise belonging to the genus, captured off the coast of Alaska in 1873. The skeleton of one of these specimens was sent to the Army Medical museum this city, where it was unfortunately destroyed by rats. The skull, however, was preserved and is now in the possession of the National Museum. The second specimen, which I shall now describe, was one of a school of five or six met with in the strait west of Adakh Island, one of the Aleutian group, August 13, 1873. It proved to be a male. (…)