E. H. STRICKLAND. 



EXPLANATION OF PLATE V. 



FIG. 12. Dorsal view of a Simttliitm larva with Sporozoid parasites in situ. 

 Compare with Plate I., Fig. 5, which is normal in shape. 



FIG. 13. Histoblasts of a larva parasitized with the Sporo:oa measuring 9 mm. 

 Compare with Plate II., Fig. 6. 



FIG. 14, .4, B and C. Simple "flagellate" type of parasite, X4,ooo. 



FIG. 15, A and B. Annulate "flagellate" type of parasite, X4,ooo. 



FIG. 16. Type of parasite with "flagellum" replaced by a flattened disc, 

 A showing surface view of disc, X4,ooo; B showing side view of disc, X4,ooo. 



FIG. i", .4, B, C and D. Simple ovoid type of parasite, X4,ooo. 



FIG. 18, .4 , B and C. Other bodies found in small numbers among the "spores," 

 X4.0OO. Many are larger in proportion than those illustrated. C shows one 

 apparently dividing. 



