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Extra info for Aquatic Oligochaeta: Proceedings of the Third International Symposium on Aquatic Oligochaeta held in Hamburg, Germany September 29-October 4, 1985

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The male genitalia of C cirratus . consists of a sacculate, sperIl}iducal gland with the vas deferens entering the gland in the ectal region. tion of the same organ in S. sapporensis clearly s~ow that the spermiducal gland is a short, rube with the vas deferens entering the gland in the mid region (Pierantoni, 1906). Yamaguchi's (1934) descriptions:i,ilf the spermiducal gland is a short, tube with the vas deferens entering ni. This evaluation specifically used only the typ~,,: species of Stephanodrilus rather than other, more fully described species.

US. Natn. , 114: 271- 371. Holt, P. , 1949. A comparative study of the reproductive system of Xironogiton instabilis instabilis (Moore) and Cambarincola philadelphica (Leidy). J. Morph. 84: 535 - 562. Holt, P. , 1960. The genus Ceratodrilus Hall (Branchiobdellidae, Oligochaeta) with the description of a new species. Virginia J. Sci. S. 11: 53-77. Holt, P. , 1965. The systematic position of the Branchiobdellidae (Annelida: Clitellata). Syst. Zool. 14: 25-32. Holt, P. , 1967. Status of Genera Branchiobdella and Stephanodrilus in North America with Description of a New Genus (Clitellata: Branchiobdellida).

Gustav Fischer, Stuttgart. 212 pp. , 1937. Notes sur les Oligochaeta (Naididees et Enchytraeidees) de I'Argentine. An. Mus. naco Hist. nat. Buenos Aires. 39: 135-147. , 1957. Results from the Danish expedition to the French Cameroons. Bull. Inst. fro Afr. noire. 19: 1154-1172. 37 Dzwillo, M. , 1974. Eine neue afrikanische Naidide: Rhopa/onais ajricana gen. nov. spec. nov. Mitt. hamb. zool. Mus. Inst. Hamburg. 71: 87-94. , 1974. Einige Oligochaeten aus Nigeria, dem Tschad und der Zentralafrikanischen Republik.

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