148 



STRONGYLUS FILICOLLIS, Rud. 



Plate XIX, 



Fig. 1. Adult male, natural leugtli iiulicateil byline: a, head ; h, bursa audspicula; 



c, worm enlarged twice. 



Fig. 2. Adult female, natural length indicated byline: a, head; h, vulva; c, anus; 



d, worm enlarged twice. 



Fig. 3. Head: a, mouth surrounded by four papilhe ; b, oesophagus; c, inflated skin 

 surrounding head and neck. 



Fig. 4. Skin : shows nine of the eighteen longitudinal lines. 



Fig. 5. Cephalic end : a, the head ; b, the uisophagus ; c, c, the unicellular glaixl 

 ducts. 



Fig. 6. Bursa: a, the spicula; b, their knobbed tips. 



Fig. 7. Portion of the spicula enlarged. 



Fig. 6. Ovary of fenuile with inclosed eggs showing segmentation. 



Fig. 9. Bursa spread out : a, ventral cost:e ; b, ventro-lateral ; c, lateral ; d, dorso- 

 lateral ; f, dorsal. 



