. Ascaris mystas : a, male ; b, female ; c, head. 60 mm., and the females from 102 to 130 mm. Their thickness varies from 1 to mm. The head is slightly flattened and fitted with two wing-shaped borders, which start from the mouth and enlarge slightly as they pass posteriorly. The mouth is a

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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectdogs, bookyear1897