TURBELLARIA FROM SOMALIA

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Abstract
Three new species of Polycystididae are described. They occur in marine habitats in the neighbourhood of Mogadiscio (Somalia). Djeziraia pardii n.g. n.sp. has paired gonads, a male copulatory organ with unpaired seminal vesicle, interposed prostate bulb and a simple subcylindrical stylet (84 J.m long). The female atrial organs are composed of a terminal bursa with muscular stalk and adjacent diverticulum. D, pardii is probably related to Yaquinaia microrhynchus Schockaert & Karling, 1970. Hawadlia papii n. g. n. sp. has paired gonads. The male genital canal bears a large diverticulum functioning as a prostate vesicle; the unpaired seminal vesicle enters the male canal distal to the diverticulum. Cirrus with pseudociliation not enclosed in a cirrus sac. Terminal bursa with ovovitelloducts and accessory glands opening in its stalk. The male copulatory organ of H. papii shows similarities with that of Acrorhynchides Strand, 1928 as well as that of Paracrorhynchus Karling, 1956. Phonorhynchoides somaliensis n. sp. is a species with a corkscrew-shaped stylet. The genus Phonorhynchoides certainly belongs to the Polycystididae but its relationships are difficult to indicate.

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