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Show 236 MR. G. A. K. MARSHALL ON THE [Mar. 20, I do not propose to discuss here the deaths from tuberculosis and enteritis among monkeys and birds; the figures given in the appended table are sufficiently striking, and point to the necessity of increased effort to diminish these diseases. Finally, attention may be directed to the following points of special pathological interest:- i. The rarity of new growths, of which but two instances occurred, viz., an epithelioma in a Puma, and a columnar-celled adenoma in a Monkey. ii. The occurrence, in the case of the Sheep with " cerebral tumour" caused by hydatids, of perforation of the vault of the skull, due to intracranial pressure with the absence of optic neuritis of such a degree as to be detected on careful examination of the back of eye with a hand-lens. Attention may also be directed to the absence of any marked limb-weakness in this case until very shortly before death. iii. The existence in the Gardens of a chronic disease in birds, mycosis, with well-marked post-mortem signs due to invasion of the tissues by a mould, Aspergillus fumigatus. 2. A Monograph of the Coleoptera ot the Genus Sciobius Schh. (Curculionidae). By G U Y A. K. M A R S H A L L, F.Z.S. [Received December 8, 1905.] (Plates XVIII. & XIX.*) The genus Sciobius was established by Schonherr in 1826 (Disp. Meth. p. 197) for the reception of Curculio tottus Sparrm. and C. pullus Sparrm. In 1834 Gyllenhal described two species, griseus and porcatus, the latter, however, being merely the $ of tottus. In 1843 Boheman published descriptions of eleven more species, principally from the collections of Drege and of Ecklon & Zeyher ; adding yet another in 1845 from Wahlberg's collection. Of the former series, three forms must be regarded as synonyms. In 1862 Wollaston described a single species, paivanus, taken by Welwitsch in Angola, but it is doubtful whether the insect lias been rightly included in this genus. In 1871 Fahraus added six more species to the list, all of which had been captured by the distinguished Swedish explorer, Wahlberg. The present paper contains descriptions of no less than twenty-two additional species, which must provisionally be regarded as new; thus giving a total of forty species exclusive of Wollaston's doubtful insect. * For explanation of the Plates, see p. 276. |