. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. 182 PARASITOLOGY. TAENIA OVIS. Where Found.—Frequent in western part of the United States. Description.—Adult worm 12 to 36 inches long. The ter- minal segments are usually longer than broad. The head is provided with 4 oval suckers and a ros'tellum of from 24 to 36 hooklets. Life History.—Similar to that of the Taenia Marginata except that the cystic form develops in the musculature, both skeletal and heart. The cystic stage is called the Cysticercus ovis. The cysts are oval in shape and average about one-fourt
. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. 182 PARASITOLOGY. TAENIA OVIS. Where Found.—Frequent in western part of the United States. Description.—Adult worm 12 to 36 inches long. The ter- minal segments are usually longer than broad. The head is provided with 4 oval suckers and a ros'tellum of from 24 to 36 hooklets. Life History.—Similar to that of the Taenia Marginata except that the cystic form develops in the musculature, both skeletal and heart. The cystic stage is called the Cysticercus ovis. The cysts are oval in shape and average about one-fourth inch in diameter. Each cyst contains one head. Animal Infested.—Adult stage, intestines of the dog. Cystic or larval stage the musculature of the sheep. TAPEWORMS OF DOG. • „ The tapeworms commonly found in the dog are armed; their life history is known. Taenia Marginata (Marginatus—margined).'' ' Synonym.—Marginata tapeworm. jTaenia Hydati- gena. Distribution.—One of the common tapeworiWiS of the dog; the shepherd dogs are a common carr-i^gr of Description.—The head is sparce- ly wider than the heck and is pro- vided with four sucker : t ,veen which is located of hooklets; this rostellum is arranged in a double circular fofm and consists of from thirty to forty hooklets. The neck is short; the segments as they develop from the neck are shorter than broad. As the distance from the head grows greater the segments be^ come wider and longer; the mature segments are nearly square; the ripe segments are slightly longer. Fig. 70— Taenia Marginata. a. Head. b, Neck. c. Genital pore, d, Ripe 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 Kaupp, Benjamin Franklyn, 1874-. Chicago : A. Eger
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