Sphalloplana hubviahti (Hyman, 1945) 



Synonym: Speophila hubviahti Hyman, 1945 



65 rr-K 66 



m ode 



Fig. 65 and 66 after Hyman (1945), modified, 



Preserved specimens up to 17 mm long, with broadly rounded anterior end, 

 white, eyeless. Adhesive organ conspicuous, consisting of a deep pit 

 surrounded by many eosinophilic glands and provided with a complex system 

 of muscle fibers. Marginal rhabdites very large. Testes dorsal, 

 prepharyngeal . Penis with muscular bulb and long, finger-shaped papilla. 

 Vasa deferentia unite at the anteroventral border of the penis bulb and 

 traverse the bulb as a narrow canal, the common vas deferens. This opens 

 into a widened, elongated cavity, the penial lumen, which proceeds to the 

 tip of the papilla. Copulatory bursa large. Its outlet runs first above 

 the penis as a narrow canal, then widens considerably while being dis- 

 placed to the right side of the midline. Caves and springs in Illinois 

 and Missouri. Literature: Hyman (1945). 



52 



