AST. 13 PARASITIC NEMATODES FKOM CHINA SCHWAETZ 7 



Superfamily STRONGYLOIDEA Weinland, 1858 

 Family STRONGYLIDAE Baird, 1853 



Genus MONODONTUS Molin, 1861 



MONODONTUS TRIGONOCEPHALUS (RudolphI, 1805) 



Numerous specimens of this species (8 lots) from the intestine of 

 Ovis aries, the material having been collected in Peking in 1920 and 

 1921, in Wuchang in 1924 (Cat. Nos. 26401, 25416, 25417, 26422, 

 26424, 26455, 26458, and 26460, U.S.N.M.). 



Genus AGRIOSTOMUM Railliet, 1902 



AGRIOSTOMUM VRYBURGI RaUliet, 1902 



Several specimens from the intestine of a cow were collected in 

 Yang Chun in 1920 (Cat. No. 26450, U.S.N.M.). This species is 

 only known to occur in the Orient. 



Genus ANCYLOSTOMA (Dubini, 1843) 



ANCYLOSTOMA DUODENALE (Ehibini, 1843) 



This species has been reported from man by various workers in 

 China. 



ANCYLOSTOMA CANINUM (Ercolani, 1859) 



Numerous specimens from the small intestine of domestic cat (Felis 

 domestica) collected in Peking in 1920 and in 1922 (Cat. Nos. 26406, 

 26407, 26427, 26429, U.S.N.M.) and in Yu Tao Ho in 1920, also 

 several specimens from the intestine of a wild cat {Felis, species) 

 collected in Peking in 1921 (Cat. No. 26423, U.S.N.M.). Speci- 

 mens from a dog {Canis familiaris) from China are present in the 

 helminthological collections of the United States National Museum 

 (Cat. 18681), this material having been collected by Doctor Shields. 

 Maxwell reports this species from dogs in south Fukien. Faust 

 (1921) reports this species from dogs in China. 



Genus NEGATOR Stiles. 1903 



NEGATOR AMERICANUS (StUes, 1902) 



This species has been reported from man in various parts of China. 

 Genus STRONGYLUS Goeze, 1782 



STRONGYLUS EDENTATUS (Looss, 1900) 



Specimens of this species were collected from the intestine of a 

 donkey {Equus asinus) in Peking in 1922 (Cat. No. 26434, U.S.N.M.). 



STRONGYLUS VULGARIS (Looss, 1900) 



A number of specimens from the intestine of a horse (Equus 

 cahallus) were collected in Peking in 1922 (Cat. No. 26432, U.S.N.M.). 



