200 ILUNOIS BIOLOGICAL MONOGRAPHS [498 



EXPLANATION OF PLATE 



Figs. 632 to 642. CUoromyxum wardi. OriginaL 



Fig. 632. A 3roung trophozoite. Smear and Giemsa, XlSOO. 



Fig. 633. A sporulating trophozoite. Giemsa. X 1500. 



Figs. 634 to 637. Surface views and optical sections of four unstained spores, showing the 



sutural ridge and the fine striations on the shelL X 1500. 

 Fig. 638. A polar view of unstained spore, X2360. 

 Figs. 640. Surface view and optical section of a single spore. X2360. 

 Fig. 641. A front view of an unstained spore. X2360. 

 Fig. 642. A Giemsa stained spore. X1500. 

 Figs. 643 to 649. Myxoholus aureatus. After Ward (1919). 

 Fig. 643. A fresh spore (1919, Fig. Aa). 



Figs. 644 and 645. Fresh spores kept for 24 hours or more in water (1919, Fig. Aa). 

 Fig. 646. A preserved unstained spore (1919, Fig. Ba). 



Fig. 647. A spore stained with Delafield's hematoxylin (1919, Fig. Bd). X1500. 

 Fig. 648. A spore with an extruded polar filament from section preparation stained with 



Giemsa's mixture (1919, Fig. Bg). X1500. 

 Fig. 649. A yoimg spore, stained with Giemsa's mixture (1919, Fig. Bi). X1500. 

 Figs. 650 to 653. Henneguya brachyura. After Ward (1919). X1500. 

 Fig. 650. A young spore stained with Giemsa's mixture (1919, Fig. Ce). 

 Figs. 651 and 652. Front and lateral views of spore (1919: F^. Cb and Cc). 

 Fig. 653. A detached taU (1919, Fig. Cf). 



Figs. 654 to 656. Henneguya salminicola. After Ward (1919). X1500. 

 Fig. 654. A young spore stained with Giemsa's mixture (1919, Fig. Fc). 

 Figs. 655 and 656. Front and lateral views of unstained preserved spores. 



