Horváth Géza (szerk.): A Magyar Természettudományi Múzeum évkönyve 21. (Budapest 1924)

Soós, L. ; Schlesch, H.: Notes on some Arctic Mollusca from Greenland

:loo Itr. I.. SOOSAND HANS SCHLESdH subaequans, apertura ovalis, callo parietali albo, eolumella funicularis substricta reeedens." The anatomical study of the reproductive organs (fig. 3) of this doubtful species

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) has given the following result: The hermaphrodite gland is globular. made up of largc, tubular acini, it is imbedded in the mass of the liver bul very loose, so that it is easily separable. The hermaphrodile duct is slenderer on either end, tlucker, somethnes very thick and closely convoluted in the middle, blaek this colour being eause I by the pigment stored up in a thin Fig. 3. R<q>ro(luctive orgaus and ,ja\v of Sucr.inea groenlandica EAdLLBK. membrane covering its wall. The hermaphrodite duct enters the receptaculum seminis represented sometimes by a more or less globular increase (fig. 3 B), it is, however, scarcely differentiated (Jfig. 3 A), and seems to be the direct continuation of the two arcuate-tubular vesiculae seminales sitting on its posterior end. The albumen gland is triangular in shape, it is eomposed of lobes pressed closely to eaeh other. The receptaculum seminis is followed by a tubular duct soon dilating and passing over into the uterus; this part (fig. 3 B) is to be regarded as a short spermoviduct, but inale and feniale parts are not to be distinguished on a8

) . . . «tiber die man alterdings sehr verschiedener Ansichl sein kann", says KOBELT (Studien zur Zoogeographie; p. 182).