In this order various species injurious to cattle and horses, including six species of TABANIDÆ, one being the beautiful _Tabanus africanus_ of Gray (Griff. Anim. Kingd. Ins. pl. 114, fig. 5), were taken; also two species of _Hippobosca_, and various specimens of the terrible TSETSE (_Glossina morsitans_, Westw., Proc. Zool. Soc., 10th December 1850), of which I have thought it would be desirable to give a fresh figure (Plate G, fig. 2). The figure which I gave of this insect, accompanying my original description, was afterwards copied upon the titlepage of Dr. Livingstone’s Travels (without acknowledgment), and in my memoir I ventured to suggest not only that the Tsetse was identical with the Zimb of Bruce, but also possibly with the Tsaltsalya; and further, that “the fly that is in the uttermost part of the rivers of Egypt,” described by the prophet Isaiah (ch. vii. 18, 19), and considered as the cause of one of the plagues of Egypt, may also have been no other than the Tsetse. Two notes recently published on this insect, with suggestions of remedying or preventing its attacks, may be added:-- Lewis Hornor, in the “Times,” 25th February 1879, writes, “Having hunted in the African fly country and seen many horses and oxen die of the bite, against which no external application is, I firmly believe, any safeguard, I venture to call attention to the precautions adopted by the Boer elephant hunters in the interior. The Tsetse inhabits narrow and clearly defined strips of country, familiar to all natives, and readily evident to strangers. On approaching one of these ‘fly belts’ (so called) a halt is made, and inspanning again at sundown the Boer treks through at night in safety. I only remember one case of mishap, when, in crossing a belt near the confluence of the Chobé and Zambesi, two or three oxen out of nearly forty were bitten, and that, if my memory serves me, on a bright moonlight night.” The African traveller Hildebrandt recommends strongly, in the “Korrespondenzblatt der afrik. Gesellschaft,” the use of petroleum for those travelling in the tropics, as a protection against insects. Occasional applications to the face and hands ensured entire freedom from mosquitoes, and the same method sufficed to preserve horses and cattle against the deadly attacks of the Dondorobo gadfly, which so often cripples the movements of the explorer. Petroleum likewise protected the Natural History Collections of the traveller from ants, moths, etc. [The description of Plates E-H is given on p. 365.] [Illustration: App.Pl.E. [symbol]. del. Mintern Bros. lith.] [Illustration: App.Pl.F. [symbol]. del. Mintern Bros. lith.] [Illustration: App.Pl.G. [symbol]. del. Mintern Bros. lith.] [Illustration: App.Pl.H. [symbol]. del. Mintern Bros. lith.] DESCRIPTIONS OF THE PLATES. PLATE E. Fig. 1, 2. _Acræa amphimalla_. „ 3, 4. _Callosune Wallengrenii_.