Walker: CEsophagostomum apiostomum: I.] 



[Phil. Journ Sci., VIII, B, No. 6. 



Fig. 1. Cephalic end of malure larva, showing strongyliform oesophagus. X 390. 



2. Caudal end of mature larva. Note the long filifornn tail of old larval skin. X 390. 



PLATE IV. CESOPHAGOSTOMUM APIOSTOMUM WILLACH. 



