U. S. B. F.— Dec. 959 



Fi7. 3. — Adult parasite as it appears by transinittod li.cht. Highly maRnifipd. 



Fig. t.— Cyst filled with minute young parasites about to burst open. Highly magnified. 



Fig. .5.— Bursting of cyst and escape of largo numbers of young parasites. Highly magnified. 



