WORMS FROM JIAMMALS AND BIRDS. 



Text-fieure 5. 



497 



m. 



A B 



Acantliocheiloucma gracile (Rud.). 



Head : A. Dorsal view, B. Lateral view. X 225. 



l.p., lateral liead-papilla ; m., mouth; s.p., submcdian licad-iiaijilla; 



Text-fiarure 6. 



Acantlwuhe ilonema gracile (Uiid.). 

 Posterior esti'emity of male, lateral view. X 225. 



c.a., caudal appendage ; c.^?., caudal papilla; cl., cloaca; jjo., postanal papilla; 

 pr., preanal papilla: sp., posterior part of long spicule; spL, short spicule. 



