On three new species of Hydrophilidae

the characters o£ an aberrant new genus and species of SydrophiUdce, found in Texas by Belfrage, and has named the insect Sepidalum costatum."When I was Last in London, Mr. E. W. Janson presented me, in the presence of Dr. Horn, with a peculiar small coleopterous insect he had destined for me, and on looking at the specimen I recognized it as allied to a remarkable species in my collection from South America, resembling, at first sight, a small Trox, or a Heteromerous Coleoptei'on, but which, after examination, I had referred to the Sydrophilidce ; and, on its being handed to Dr. Horn for inspection, he declared it to be allied to a remarkable insect that had much interested Dr. Leconte and himself, and which the latter was just describing under the name of Sepidulum costatum.Dr. Leconte, knowing the interest I felt in his new genus, has been so kind as to send me a couple of individuals, and, on examining them, I find that both my species are really closely allied to the Texas species, so that I feel justified in describing them under the same generic name,