Walker: Olsophaoostomum apiostomum: I.] 



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



Fig. 1. Mature larva inclosed in skin of last molt. X 84. 



Fig. 2. Cephalic end of mature larva inclosed in skin of last molt. -, 350. 



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Fig. 3. Posterior part of body of mature larva inclosed in skin of last molt. X 350. 

 PLATE III. MATURE LARVA OF CESOPHAGOSTOMUM APIOSTOMUM WILLACH. 



