( 227 ) VIII. On the Pyralidina collected in 1874 and 1875 by Dr. J. W. H. Trail in the Basin of the Amazons. By William Warren, M.A., F.E.S. [Read February 6tb, 1889.] The insects treated of in the accompanying paper were collected in 1874 and 1875 by Dr. J. W. H. Trail in the Basin of the Amazons. The Ehopalocera and larger Heterocera were worked through and described by Mr. A. G. Butler in papers published in the ' Trans-actions ' of the Entomological Society of London for the years 1877, 1878, and 1879. The remainder, namely, Deltoids and Pyralidina, were about the same period cursorily inspected, and in some cases identified, by the same gentleman ; but from pressure of work and other causes were not exhaustively worked out and made the subject of a fourth paper. This unfortunate delay is all the more to be regretted, inasmuch as the collection contains not only several species at present unrepre-sented in the British Museum Collection, but likewise a considerable number of curious and aberrant forms. The specimens themselves are 293 in number, be-longing to 125 different species, about 50 of which I have been unable to identify as previously described or figured, while in several cases the formation of new genera has seemed necessary. For the circumstances under which the collection was made, and the precise localities explored, it will be enough to refer to Mr. Butler's first paper, published in the ' Transactions ' of the Entomological Society of London for 1877, p. 105. There are, however, a few species to which special reference seems called for. And first, there are two very remarkable sj^ecies of Pseudo-deltoids, viz., an example of Tortricodes alucitalis of Guenee, described by him from a single damaged specimen, and a new species more closely allied to Walker's Gaherasa ambigualis, in TRANS. ENT. SOC. LOND. 1889. PART II. (jUNE.)
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