CCELHELMINTHES 223 



Gongylonema scutata. Hosts, sheep, cattle. P. 247. 



Filaria labiato-papillosa. Hosts, cattle, deer. P. 248. 



Dirofilaria immitis. Host, dog. P. 248. 



Spiroptera sanguinolenta. Host, dog. P. 250. 



Arduenna strongylina. Host, hog. P. 251. 



Physocephalus sexalatus. Host, hog. P. 252. 



Dispharagus spiralis. Host, poultry. P. 254. 



D. hamulosus. Host, poultry. P. 254. 



D. nasutus. Host, poultry. P. 254. 



Tetrameres fissispina. Host, poultry. P. 254. 

 Family (e) Strongylidse. P. 255. 

 Genus and Species: 



Stephanurus dentatus. Host, hog. P. 295. 

 Subfamily (a) Metastrongylina; Worms of the respiratory tract. 

 P. 256. 

 Genus and Species: 



Dictyocaulus filaria. Hosts, sheep, goat. P. 256. 



Synthetocaulus rufescens. Hosts, sheep, goat. P. 257. 



S. capillaris. Hosts, sheep, goat. P. 258. 



Dictyocaulus viviparous. Host, cattle. P. 259. 



Metastrongylus apri. Host, pig. P. 260. 



M. brevivaginatus. Host, pig. P. 260. 



Dictyocaulus arnfieldi. Host, equines. P. 261. 



Hsemostrongylus vasorum. Host, dog. P. 261. 



Synthetocaulus abstrusus. Host, cat. P. 262. 

 Subfamily (6) Trichostrongylinse. Worms of the stomach and 

 intestine. P. 268. 

 Genus and Species: 



Haemonchus contortus. Hosts, sheep, goat, cattle. P. 268. 



Cooperia curticei. Hosts, sheep, goat. P. 268. 



Ostertagia marshalli. Host, sheep. P. 269. 



Trichostrongylus instabilis. Hosts, sheep, goat. P. 271. 



Ostertagia ostertagi. Host, cattle. P. 272. 



Nematodirus fiUcollis. Hosts, cattle, sheep, goat. P. 273. 



Cooperia oncophora. Hosts, cattle, sheep. P. 275. 

 Subfamily (c) Strongylinse. Worms of the large and small in- 

 testines. P. 280. 

 Genus and Species: 



(Esophagostomum columbianum. Hosts, sheep, goat. P. 

 281. 



(E. venulosum. Hosts, sheep, goat. P. 282. 



(E. radiatimi. Host, cattle. P. 285. 



(E. subulatum. Host, hog. P. 287. 



Chabertia ovina. Host, sheep. P. 287. 



