Synonym: 



37 



phagooata bursaperforata Darlington, 1959 



Fontioola bursaperforata: Ball, 1969, 



de bd 



sv 



I 1 / I , 

 I I / I I 



od am at gp sph 



Fig. 37 after Carpenter (1970). 

 Fig. 38 after Darlington (1959). 



A slender species, sexually mature specimens measuring 10-14 mm in length 

 and about 1 mm in width. Head truncate, with slightly convex frontal 

 margin and a pair of rather long, thin, pointed auricles extending 

 anterolaterally, with a slight constriction behind them. Eyeless and 

 unpigmented, white. Pharynx situated rather far back. Testes in moder- 

 ate number, prepharyngeal , may bridge the entire dorsoventral diameter 

 of the body. Penis consists of a relatively small bulb and a cylin- 

 drical papilla tapering toward the tip. The vasa deferentia narrow 

 behind the spermiductal vesicles, enter the penis bulb ventrolaterally, 

 and unite within the bulb to a straight canal, the ejaculatory duct, 

 without passing through an enlarged cavity or seminal vesicle. The duct 

 widens only moderately just before its opening at the tip of the penis 

 papilla. Genital atrium divided into male and female atria. The outlet 

 of the common oviduct is on the dorsal wall of the male atrium, rather 

 far removed from the female atrium. The copulatory bursa appears sac- 

 shaped in sagittal section but extends laterally toward the right poste- 

 rior intestinal ramus and communicates with it. Bursal canal narrow in 

 its anterior part, widening as it descends behind the male atrium, and 

 equipped with a terminal muscular sphincter. In springs, rivulets, and 

 a cave (J. H. Carpenter, personal communication), Georgia and Alabama. 

 Literature: Darlington (1959). 



37 



