497 



Text- figure 5. 



A B 



Acanthocheilonema gracile (Rud.). 

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

 l.'p., lateral liead-papilla ; m., mouth; s.p., submedian head-papilla. 



Text-figure 6. 



Acanthocheilonema gracile (Rud.). 



Posterior extremity of male, lateral view. X 225, 



c.a., caudal appendage ; c.p., caudal papilla; cl., cloaca; pa., postanal papilla; 

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



