116 DISEASES OF POULTRY. 



JJt/trakis coinprcssii. Male 2 in. long; female 3^+ in. long; 

 fowl ; intestine. 



Hftcrakis diffcrcns. Slightly larger than papulosa ; fowl ; 

 posterior portion of intestine. 



Ht'tt'iakis dispar. Male ,'2 to -3 in. long ; feriale -3 to 1 

 in. long ; goose ; ca-ca. 



Jlctcrakis maculosa. Male -A, to 1 in. long ; female 1 to V/2 

 in. long ; pigeon ; intestine. 



Hcterakis papulosa. Male M in. long; female yi in. long; 

 fowl, turkey, guinea fowl, goose, and peacock ; ca-ca. 



Hcterakis pcrspicillum. Male 1 to 3 in. long ; female 2-»4 to 

 5 in. long ; fowl and turkey ; small intestine. 



Strongylus tenuis. "^AtAq % '\n. \on^ •■, female '3 in. long; 

 goose ; intestine. 



Trichosoma anatis. Male '2 in. long; female 1 in. long ; 

 goose; c:eca. 



Trichosoma annulatuju. Male -3 in. long; female 3 in. 

 long ; fowl ; intestine. 



Trichosoma collare. Male ,'3 in. long ; female y^ to Yz in. 

 long ; fowl ; intestine. 



Trichosoma longicolle. Male -'3 to 1 in. long ; female 3 in. 

 long ; fowl ; intestine. 



THOKN-HEADED WORMS (ACANTHOCEPHALA). 



EchinorhynchusfiliLollis. Male '3 in. long; female ,'2 to \% 

 in. long ; duck ; intestine. 



Echiiiorhynchus polyinorphiis. ' 6 to 1 in long; orange-red; 

 duck and goose ; intestine. 



Echitiorhynchus sphccrocephalus. )i to -3 in. long; duck; 

 intestine. 



Symptoms. — The symptoms which indicate the ex- 

 istence of worms in the intestines are not Yer}^ charac- 

 teristic, but are such as would be expected from ill- 

 health due to any chronic disease. The birds become 

 dull, weak, emaciated, isolate themselYes, are indis- 

 posed to search for their food, are stiff in their walk, 

 their plunia<^e loses its brilliancy and becomes rough, 

 they haYe diarrhea and sometimes epileptiform attacks. 

 In certain cases the symptoms dcYelop rapidly and 



