ADVERTISEMENT.

The following memoir, by Doctors G. Brown Goode and Tarleton H. Bean, having been published at the joint expense of the Smithsonian fund and of the printing appropriation of the United States National Museum, two separate editions are issued, one forming a portion of the series of Smithsonian Contributions to Knowledge, and the other appearing as a special bulletin of the United States National Museum.

In accordance with the rule adopted by the Smithsonian Institution, the work has been submitted for examination to a commission consisting of Doctors Theodore Gill, David S. Jordan, and Edward D. Cope, and having been recommended for publication by these gentlemen, it is herewith presented as a work of original research, illustrating more particularly the deep-sea and pelagic fishes of the world.

S. P. LANGLEY,

SMITHSONIAN INSTITUTION,

Washington, July, 1895.

Secretary.