384 The MoUuscan Family Planorhidae 



PLATE 74 



Indoplanorbis exiistus (Deshayes) 

 Genitalia copied from Larambergue, 1939b, p. 293 



6. Indi\'idual with verge and preputium protruded from male genital opening, the 



latter cut open to show portion of verge not everted. 



7. Two individuals of Indoplanorbis in coitus showing the extension of the penial 



complex from the body of the animal acting as male. Specimens anesthetized. 



8. Schematic figure of penial complex retracted within the body of the animal. 

 9 Schematic figure of penial complex everted during copulation. 



Explanation of symbols on the plate: Cd, vas deferens; G, prejiutium 

 (gaine) ; Pe, verge (tube penial); Pp, vergic sac (poche du i)enis). 



Vertical line indicates size in millimeters 



