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Show f> MR. G. A. K. MARSHALL ON COLEOPTERA [Jan. 19, •• 3150. The aorta of a Turtle (photographed from a specimen in the Hunterian Collection, Royal College of Surgeons), in which without any obvious morbid change of structure, a small conical aneurysm is formed by dilation of a portion of all the coats. The base of the cone is formed by the mouth of the aneurysm, and one of its borders projects a little, like a narrow semilunar valve." The following papers were read :- 1. A Monograph of the Coleoptera of the Genus Hippor-rhinus, Schh. (Curculionidse). By G U Y A. K. M A R S H A L L , F.Z.S. f Received November 12,1903.] (Plates I.-IV.*) Since the time, now more than thirty years ago, when Fahrseus described the collections made by the Swedish surveyor and explorer, Wahlberg, the Curculionidse of South Africa have received comparatively little attention from systematists, and, so far as the genus Hipporrhinvs is concerned, only a bare half-dozen isolated species have been described by Peringuey, Faust, and Fairmaire during that period. As a result of this a considerable amount of undescribed material has accumulated in collections, so that I have found it necessary to recognise provisionally no less than fifty new species, the describing of which has necessitated a complete revision of the genus. For much of this material I am indebted to the liberality of m y fellow-entomologists in South Africa, and especially to the Rev. Father O'Neil, of Dunbrody, near Uitenhage; Dr. H. Brauns, of Willowmore, Cape Colony; and Mr. C. N. Barker, of Natal; all of whom have generously presented me with examples of any species I required from their collections. During a few days' stay in Cape Town I was able to look through the fine series of Hipporrhini in the South African Museum and also in Mr. Peringuey's private cabinet. The latter gentleman not only placed all his material at m y disposal, but kindly handed over to me his M S . of a monograph of the genus which he had begun to write in French many years ago. Although I have not been able altogether to accept the arrangement and subdivision of the genus proposed by Mr. Peringuey, yet I have availed myself of several interesting notes and observations made by him, and have adopted one of his proposed new genera. A great part of my work was effected in the Insect Room of the British Museum during the summer of 1902, and I have to gratefully acknowledge the courteous assistance affox-ded me by both Mr. C. J. Gahan and Mr. G. J. Arrow during the many * For explanation of the Plates, see p. 141. |
