SECTION IV 

 SPECIES CHARACTERISTICS AND RANGES 



•t^ura foremanii (Girard, 1852) 



Synonyms: Dugesia foremanii Girard, 1852; Planaria foremanii: Stimpson, 1857; 

 P. simplissima Curtis, 1900; P. simpliaissima: Morgan, 1904; P, lugubris: 

 Morgan, 1901 (not 0. Schmidt, 1861); Curtisia simpliaissima: Graff, 1916; C. 

 foremani: Kenk, 1930; IPlanaria gonoaephala: Pearl, 1903 (not Duges, 1830); 

 IDugesia modesta Girard, 1893, 



sg ode 



vs vd 



Fig. 7 after Kenk (1935). 



Length 7-15 mm, generally rather broad and thick. Head bluntly tri- 

 angular, with rounded, only slightly protruding auricles. Color uni- 

 formly gray or brown to almost black, ventrally lighter. Besides the 

 (normally two) white eye fields there is a light oblique dash on the 

 dorsal side of each auricle and the mouth and gonopore appear as white 

 spots. Pharynx unpigmented (white), which distinguishes the species 

 from the common American species of Dugesia (this may be checked on the 

 freshly extirpated pharynx). Testes very few, dorsal, between ovaries 

 and level of mouth. Penis relatively small, with moderately developed 

 bulb containing the rounded seminal vesicle and a finger-shaped papilla 

 traversed by a straight ejaculatory duct opening at its tip. No bursal 

 sac is developed, the bursal canal attaches to a branch of the intestine. 

 The two oviducts unite behind the copulatory apparatus and open into the 

 bursal duct which also receives the shell glands. Cocoon spherical, 

 attached to substrate by a thin, flexible stalk. Inhabitant of cool 

 streams. Reproduces only sexually. Eastern half of North America, from 

 New Brunswick to Louisiana and westward to Minnesota and Arkansas. 

 Principal literature: Curtis (1900), Stevens (1904), Kenk (1935 and 

 1944). 



19 



