. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. Fig. 142.—Ostertagia ostertagi. Posterior extremity of male with bursa spread out: d, dorsal ray; e. d., externo-dorsal ray; p. 1., postero- lateral ray; m. 1., medio-lateral ray; o. 1., externo-lateral ray; 1. v., latero- ventral ray; v. v., ventro-ventral ray; p. b. p., pre-bursal papilla; sp., spi- cules. xl50. (After Ransom, from Railliet, Bull. No. 127, Bureau An. Ind., U. S. Dept. Agr.).. Fig. 141.—Oster
. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. Fig. 142.—Ostertagia ostertagi. Posterior extremity of male with bursa spread out: d, dorsal ray; e. d., externo-dorsal ray; p. 1., postero- lateral ray; m. 1., medio-lateral ray; o. 1., externo-lateral ray; 1. v., latero- ventral ray; v. v., ventro-ventral ray; p. b. p., pre-bursal papilla; sp., spi- cules. xl50. (After Ransom, from Railliet, Bull. No. 127, Bureau An. Ind., U. S. Dept. Agr.).. Fig. 141.—Ostertagia oster- tagi; male at riglit, female at left. * Vulva. xl5. (After Ran- som, Bull. No. 127, IBureau An. Ind. U. S. Dept. Agr.). by a prominent cuticular flap; it is located close to the caudal extremity of the body. The tail tapers gradually and ends in a slen- der tip. Length of female, 8-10 mm. (5/16-3/8 of an inch); male, 7-8 mm. (1/4-5/16 of an inch.) The eggs are oval, 65-80 microns in length by 30^0 microns in breadth. The worm is parasitic in the wall and cavity of the abomasum of cattle. 2. Nematodirus filicoUis (Strongylus filicollis). Fig. 143. Tricho- strongylinse (p. 268).—This is a white hair-like worm, very thin in front, thicker behind. The cuticle has eighteen longitudinal ridges. The bursa of the male is bilobate; there are two very long and slender spicules united by a membrane posteriorly which forms a spatulate enlargement at the tip. The vulva of the female is a transverse slit located about one-third of the length of the body from the caudal extremity. At this location the body has its maximum thickness which is suddenly reduced. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Underhill, Benjamin Mott. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdomesti, bookyear1920
