. :/^nf ^ Fig. 247.—Sheep louse {Tricliocephalns si^liwrocephaltis). a. Female ; 6, antenna c, d, dorsal and side view of leg. Enlarged. (After Osborn, 1896; Bui. No. 5. Div. Entomology, Dept. Agr.) that they are present in any considerable number in all parts of the body. In the ox they are principally found in the depression at the back of the base of the horns, and in the upper margin of the neck and the back. In the absence of treatment phthiriasis may become generalised over the entire surface of the body. The trichodectes and the melophagus of the sheep choose similar points, but when th

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. :/^nf ^ Fig. 247.—Sheep louse {Tricliocephalns si^liwrocephaltis). a. Female ; 6, antenna c, d, dorsal and side view of leg. Enlarged. (After Osborn, 1896; Bui. No. 5. Div. Entomology, Dept. Agr.) that they are present in any considerable number in all parts of the body. In the ox they are principally found in the depression at the back of the base of the horns, and in the upper margin of the neck and the back. In the absence of treatment phthiriasis may become generalised over the entire surface of the body. The trichodectes and the melophagus of the sheep choose similar points, but when the wool is long they may be found nearly all over the body. In the pig the hfematopinus is found on the neck, in the region of the poll, about the armpits, and round the eyes and easr. K R

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1920