SphaZloplana priaei (Hyman, 1937b) 



Synonym: Speophita priaei Hyman, 1937, 



61 



Fig. 62 after Hyman (1937b). 



Mature animals up to 28 mm long and 3.5 mm wide. Head truncate, with 

 gently bulging frontal margin and rounded lateral edges (auricles) which 

 in quiet gliding protrude somewhat anteriorly and laterally. Behind the 

 auricles is a constriction or neck. A well-developed adhesive organ 

 forming a deep protrusible invagination with glandular and muscular 

 differentiations is located in the center of the frontal margin. Pigment- 

 less (white) and blind. Lateral margins with a zone of modified epithe- 

 lium containing very large rhabdites. Testes dorsal, prepharyngeal. 

 Penis with rounded bulb and short, generally conical papilla. Vasa de- 

 ferentia form spermiductal vesicles at the level of the pharynx, then 

 narrow again as coiled canals and enter the penis bulb separately. In 

 the bulb they unite and soon widen to an elongated seminal vesicle from 

 which an ejaculatory duct proceeds to the tip of the penis papilla. The 

 common oviduct opens into the posterior part of the male atrium. Copu- 

 latory bursa of moderate size, bursa duct initially narrow but gradually 

 widens in the posterior portion which opens into the atrium close to the 

 gonopore. Caves in Pennsylvania. Literature: Hyman (1937b). 



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