2 PROCEEDINGS OF TFIE NATIONAL MUSEUM vol.08 



ASCARIS VITULORUM Goeze, 1782 



Several immaturo specimens from the intestine of a cow (Bos, 

 species) collected in Yang Chun in 1920 (No. 26461, U. S. N. M.). 

 This species has heretofore been reported from several localities in 

 Asia, from Europe and from Africa. It is also known from the United 

 States and from Cuba. 



ASCARIS EQUORUM Goeze, 1782 



Several immature specimens from the small intestine of a mule 

 {Eqmis mulvs) collected in Peking, in 1920 (No. 26426, U.S.N.M.). 



Genus TOXOCARA Stiles, 1905 



Synonym. — Belascaris Leiper, 1907. 



TOXOCARA CAMS (Werner, 1782) 



Synonym. — Belascaris rnarginata (Iludolphi, 1802). 



A large number of specimens of this species were collected from the 

 small intestine of foxes (Canis vndpes) in Mongolia in 1921 (No. 

 26408, U.S.N.M.). Maxwell (1921) reports Ascaris canis (probably 

 Torocara canis) from dogs in south Fukien. Faust (1921) reports 

 this parasite from dogs in north China. 



Family HETERAKIDAE Railliet and Henry, 1914 



Genus SUBULURA Molin, 1860 



Railliet and Henry (1914) characterize this genus as follows: 

 Mouth, rarely with three lips, sometimes round, more often oval 

 or hexagonal, the long axis being dorso-ventral. Buccal capsule with 

 three teeth. Esophagus contains a distinct bulb. There are six 

 cephalic papillae and often two lateral alae. Males may be pro- 

 vided with feebly developed caudal wings. Spicules equal; accessory 

 piece present. Preanal sucker fusiform, without a chitinous ring. 

 Vulva located in the region of the middle of the body. Eggs, sub- 

 globular, nearly always segmented when discharged. 



SUBULURA CHINENSIS, new species 



Cuticle transversely striated. Mouth apparently with three lips; 

 buccal capsule about 63;u deep containing tliree small teeth at the 

 base. The width of the anterior end of the buccal capsule is about 

 27)u and its maximum diameter is about 45/x. Lateral alae originate 

 in the region of the lips and extend to a distance of from about 665 

 to 720/i from the cephalic extremity. The esophagus is from 1.3 to 

 1.4 mm. long and terminates in a slight prebulbous enlargement fol- 

 lowed by a bulbous swelling about 225/i long by 180 to 225/i in diame- 

 ter. The nerve ring is from 225 to 250m, and the excretory pore about 

 430^1 from the cephalic extremity. 



