No. 1. — Reports on the Dredging Oj^eratioiis off the West Coast of Central Amcriea to the Galapagos, to the West Coast of Mexico, and in the Gulf of California, in Charge of Alexander Agassiz, carried on hy the U. S. Fish Comviission Steamer "Albatross," during 1891, Lieut. Commander Z. L. Tanner, U. S. N., Com-manding. [Published by Permission of Marshall McDonald, U. S Fish Commissioner.] VII. The Orthoptera of the Galaimgos Islands. By Samuel H. Scudder. The first Orthoptera collected on the Galapagos Islands were obtained by Darwin in 1835, during the voyage of the " Beagle," and found their way to the British Museum, where they have been reported on by Walker and Butler. Darwin collected on several of the islands, but the speci-mens were not always kept separate. In 1852 the Swedish frigate "Eugenie" touched at the islands (Chatham, Charles, Indefatigable, Albemarle, and James), and from the collections made two species of Orthoptera were described by Stal, without statement of the particular islands on which they were taken. The islands were next visited, in 1872, by L. Agassiz in the " Hassler," which touched successively at Charles, Albemarle, James, Jervis, and Indefatigable, at all of wliich ex-cepting James and Jervis Orthoptera wei'e obtained. Next Commander Cookson visited the archipelago in the " Peterel " hi 1875, touching at Charles, Abingdon, and Albemarle, and bringing back Orthoptera from all but Abingdon ; these are in the British Museum, and have been reported on by Butler ; including those obtained by Darwin, there were six species. In the same year Wolf, the State Geologist of Ecuador, visited the islands, and in a brochure published later made mere mention of two species of Acridium, of which the smaller [Schistocerca literosa Walk.) was found in the vicinity of the sea, the larger (.S'. melanocera Stal) in the interior of the islands. Mr. A. Agassiz later made a similar VOL. XXV. — NO 1. 1
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