184 



PL A THELMINTHES 



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

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



Fig. 299 Fig. 300 



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



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



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

 states; life history unknown. 



2. Paragonimxts Braun. Genital pore 

 just behind the acetabulum; body thick, 

 ovoid; intestinal trunks long and un- 

 branched; testes lobate; yolk glands very 

 voluminous ; uterus veiy short : encapsuled 

 in the lungs of mammals; 1 species. 



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

 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 Rudolplii. Body 

 elongate and spiny; acetabulum near front 

 end; mouth surrounded by a reniform 

 ridge in Avhich 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 sjuny; 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 



Stephanochasmus caj^us, 



with extended cirrus (Pratt). 



P.p., propharynx ; Ph., pharynx. 



Other references as in Fig. 293. 



