STUDIES OX THE ECTOPARASITIC TREMATODES OF JAP-AN. IJ^ 



enlarged portion of the female duct which is f(3und in Sphijrannm at 

 the junction of the oviduct with tlie unpaired yolk-duct and the 

 genito-intestinal canal. Those portions of the '' oviduct " which lie 

 between the ovary and their '* ootyp " and between this and their 

 '• uterus " they call respgctively the '* ovarian " and the " uterine " 

 portion. The porticjn corresponding to wh;it has been called the 

 uterus in this paper is wanting in Splnjraniira. 



Taschen berg '-' uses the term '"Uterus" for the ootyp and 

 holds any special name for that portion of the female duct which lies 

 beyond it '' für völlig überflüssig." 



Braun-'' in his '• Würmer " uses the term " ootyp " in the sense 

 it has in this paper. •' Keimleiter " or "• Germiduct " he calls that 

 portion of the female duct which extends from the ovary '' bis der- 

 selbe (the duct) mit den Dottergängen in Verbindung tritt." And 

 at page 490 he says, '* Was jenseits des Ootyps bis zur weiblichen 

 GeschlechtsÖftnuno' lieirt, bezeichne ich als Uterus " : so that accordins^ 

 to his terminology strictly taken, no name is left for that portion of 

 the female duct which lies between the opening of the yolk-duct and 

 the ootyp. Perhaps he means to call this portion •• Keimdottergang," 

 a term used, as he himself tells us, by S t i e d a . 



It is perhaps hardly necessary to remind the reader that in this 

 paper the term "oviduct" is used for that portion of the female efferent 

 duct which lies between the ovary and the '• ootyp"; the latter for that 

 portion which is distinguished by the presence of shell-glands around 

 it ; '• uterus " for that portion which lies beyond the ootyp. In my 

 paper on Diplozoon I called " uterus " all that portion which lies 

 between the genital opening and the ootyp inclusive, and distinguish- 

 ed the latter as " uterus proper." But I find the term '• ootyp " 



1). Taschenberg — Weitere Beitrüge, p. 37 et infra. 

 2). Braun—;, c, p. 483 & 490. 



