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Show 1900.] INSECTS AND ARACHNIDS FROM SOMALILAND. 7 rifles, and I was obliged to take out my little army twice against villagers ; but luckily no blood was shed, as the villagers, seeing the rifles coming, immediately restored my stolen property. I did no collecting to speak of here, as I was ill with fever and was having a very anxious time. I could get no guide to take me across the great waterless desert of the Marehau, and was obliged to load up the water-vessels at Doosa Moreb and start without one. I believe I was the first white man to visit the heart of the Marehan and Haweea Countries, and was right glad to shake off the dust from my feet on quitting those inhospitable tribes. How I lost my way crossing the Marehan Desert, ran short of water, and all but died of thirst, I have already described in the pages of the ' Wide World Magazine.' W e reached Galadi in the Mijertain Country, and found water in the very nick of time, when I was almost at the last gasp. Here I became delirious, and knew nothing that was going on around me for hours. After leaving Galadi I became so ill and weak with fever that I did no further collecting, but was practically carried by my pony the whole way across the waterless Haud again to the Gulis Bange, where I remained a few clays to rest, and at length reached Berbera more dead than alive. A full account of my two expeditions, together with a complete list of every mammal and bird known to inhabit the country, will be found in my book ; Somaliland,' published in 1899 by Messrs. F. E. Bobinson & Co., London. The specimens mentioned and described in the following pages are in the Hope Collection, Dniversity Museum, Oxford, with the exception of those which are expressly stated to be in the British Museum. 2. DIPTEBA. By E. E. AUSTEN, Zoological Department, British Museum. Mr. Peel's collection of Diptera was not extensive, amounting only to four specimens belonging to three species, one of which, how-ever, is apparently new. Fam. TABANIDJE. Subfam. PANGONIN^;. PANGONIA Latr. PANGONIA (sens, strict.) Bond. PANGONIA TRICOLOR, sp. n. (Plate I. fig. 8.) $ . Length 17 millim.; length of wing 15-5 millim.; length of proboscis 4 millim. Shining black; first and second segments of abdomen (except a somewhat triangular area in the middle of the second segment, which, however, like the first and remainder of the second segment, is clothed with appressed silverg-white pile) white above; sixth and seventh segments and the narrow posterior margin of the fifth ochraceous, |