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In male Squamata, one half of the paired, erectile, copulatory organ, protruded through the cloaca. Only one hemipenis is inserted into the body of the female, which one being a matter of chance, and sperm is carried from the testes by ducts that open into the cloaca, whence it flows along a groove on the surface of the hemipenis.

Subjects: Zoology and Animal Sciences.

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