184 



PLATHELMINTHES 



T. magna* (Bassi) (Fig. 299). Length 20 to 100 mm.; width 11 to 

 26 mm.; body flesh-colored and thick, with anterior end not distinctly 



.-3 



Fig. 299 Fig. 300 



Fig. 299 Fasciola magna (from Ward). References as in Fig. 293. Fig. 300 

 Paragonimus westermani (from Ward). References as in Fig. 293. 



set off: in the gall passages of cattle; common in the southwestern 

 states; life history unknown. 



2. PARAGONIMUS Braun. Genital pore 

 just behind the acetabulum; body thick, 

 ovoid; intestinal trunks long and un- 

 branched; testes lobate; yolk glands very 

 voluminous ; uterus very short : encapsuled 

 in the lungs of mammals; 1 species. 



P. westermani (Kerbert) (Fig. 300). 

 Body red in color, 8 to 20 mm. long; 4 to 

 8 mm. wide: in lungs of cats, dogs, and 

 in eastern Asia, in man. 



3. ECHINOSTOMA Rudolphi. Body 

 elongate and spiny ; acetabulum near front 

 end; mouth surrounded by a reniform 

 ridge in which is a row of spines, inter- 

 rupted midventrally : many species. 



E. echinatum (Zeder). Number of 

 spines about 37; body 18 mm. long; 

 1.5 mm. wide: in intestine of ducks, 

 chickens, geese, and swans. 



4. STEPHANOCHASMUS Looss. Body 

 elongate and spiny; acetabulum near for- 

 ward end; mouth surrounded by 2 rows of spines: several species, in 

 fishes. 



* See "The Anatomy of the Large American Fluke," etc., by C. W. Stiles, Jour. 

 Comp. Med., etc., March, 1894 May, 1895. 



Fig. 301 



StepJianochasmus casus, 



with extended cirrus (Pratt). 



P.p., prepharynx ; Ph., pharynx. 



Other references as in Fig. 293. 



