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Maaroootyla glandulosa Hyman , 1956 



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pi bd ode gp 



(Hyman' s description emended by study of additional material). A large 

 species, up to 30 mm long and 6 mm wide. Anterior end truncate, with 

 straight or slightly waved frontal margin and rounded lateral edges 

 which protrude only little to the sides, causing a faint incurving to 

 appear behind them. A protrusible adhesive organ may be projected from 

 the center of the frontal margin during searching movements or upon 

 stimulation. Eyes lacking. Color in life a very light reddish-brown or 

 orange. The pigment is not granular but is diffused in the subepidermal 

 tissues, including the head and the body margins, absent only in the 

 pharynx, the copulatory complex, and the denser parts of the adhesive or- 

 gan. Lateral margins with large rhabdites. Testes ventral, prepharyngeal . 

 Penis with large bulb and conical papilla, flanked by voluminous masses 

 of eosinophilic glandular tissue which empty their secretions into the 

 penis lumen. The penis bulb contains a large cavity with irregular folded 

 outline, the seminal vesicle. From this cavity a rather wide canal, the 

 ejaculatory duct, proceeds to the tip of the papilla. The sperm ducts 

 open into the seminal vesicle independently, without uniting. Common 

 oviduct connects to the posterior part of the male atrium. Copulatory 

 bursa relatively large, with wide outlet opening near the gonopore. Re- 

 production sexual, with spherical egg capsules of over 3 mm diameter, 

 unstalked. The species resembles a Sphalloplana in all essential char- 

 acteristics except the arrangement of the pharyngeal muscle fibers, 

 which is of the dendrocoelid type (see p. 13). Caves (J. H. Carpenter, 

 personal communication) and spring in Missouri and Iowa. Literature: 

 Hyman (1956). 



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