PARASITIC NEMATODES FROM CHINA 



By Benjamin Schwartz 



Of the Zoological Division, Bureau of Animal Industry, United States Department 



of Agriculture 



The following report is based largely ou a collection of parasitic 

 nematodes submitted for identification to the Zoological Division of 

 the Bureau of Animal Industry by Dr. E. C. Faust of the Peking 

 Union Medical College, Peking, China. In addition to the records 

 based on the specimens submitted by Doctor Faust, many of which 

 are new to China, two records based on China material in the 

 Helminthological Collections of the U. S. National Museum as well 

 as a number of records published by other investigators are included 

 in this paper. 



Heretofore our knowledge concerning parasitic nematodes from 

 China has been largely limited to forms occurring in man, the para- 

 sitic nematode fauna of wild and domesticated animals having been 

 practically unknown. The list of species given in the following 

 pages contain not only many new records, but also represents an 

 attempt to systematize our knowledge of these parasites from China. 



Siiperfamily ASCAROIDEA Railliet and Henry, 1915 

 Family ASCARIDAE Cobbold, 1864 



Genus ASCARIS Linnaeus, 1758 



ASCARIS LUMBRICOIDES Linnaeus, 1758 



Several immature specimens from the intestine of swine, collected 

 in Peking in 1920 (No. 26403 U.S.N.M.:'. This species has been 

 reported from man and from swine in various parts of China, Max- 

 well (1921) lists Ascaris suilla ( = Ascaris lumhricoides) from Canis 

 familiaris in China, this being the second report of the occurrence 

 of this species in dogs, the first report being that of Leiper (1913) 

 and the most recent record that has come to light being that of Ando^ 

 and Asai, published in 1924 and reviewed recently (1925; in the 

 Japan Medical World. These writers say that three dogs out of 

 one hundred that were examined showed human Ai^caris eggs in the 

 feces. 



No. 2614.— Proceedings U. S. National Museum. Vol. 68, Art. 13 



60729— 26t 1 1 



