250 ILLINOIS BIOLOGICAL MONOGRAPHS [488 



EXPLANATION OF PLATE 



Fig. 505. Spores of Henneguya Gurleyi. After Gurley (1894, PI. 33, Figs. 8c, 6 and 7). 



X about 3100. 

 Fig. 506. Spores of Henneguya strongylura. After M tiller (1841, Fig. 2). 

 Fig. 507. Spores of Henneguya monura. After Ryder (1880, Figs. Ic and 2d). 

 Fig. 508. Spores of Henneguya kolesnikovi. After Kolesnikov from Gurley (1894, PL 35, 



Fig. 7). 

 Figs. 509 to 512. Henneguya macrura. After Gurley (1894). X about 2100. 

 Figs. 509 and 510. Spores (1894, PL 32, Fig. 5, PL 33, Fig. 1). 



Fig. 511. A spore treated with iodine, showing the "beading of the tail" (1894, PL 33, Fig. 3). 

 Fig. 512. A tail separated from the main part by iodine (1894, PL 33, Fig. 4). 

 Fig. 513. Spores of Henneguya zschokkei. After Zschokke (1898, Figs. 2 and 1). 

 Fig. 514. Spores of Henneguya sp. After Benecke from Gurley (1894, PL 29, Fig. 8). 

 Fig. 515. Spore of Henneguya tenuis. After Vaney and Conte (1901, Fig. 2). 

 Figs. 516 and 517. Spores of Henneguya niissUni. After Schuberg and Schroder (1905, 



Figs. 13 and 14). Comp. oc. 12 and obj. 2nim. 

 Figs. 518 to 523. Henneguya legeri. After C6pMe (1913). 

 Figs. 518 to 521. Trophozoites (1913, Figs. 2, 23, 15 and 25). X900. 

 Fig. 519. A trophozoite in division (1913, Fig. 23). X900. 

 Fig. 521. A trophozoite stained with iron hematoxylin (1913, Fig. 25). X900. 

 Fig. 522. An elongated spore (1913, Fig. 26). X900. 

 Fig. 523. An ovoidal spore (1913, Fig. 24). X450. 

 Fig. 524. A spore of Henneguya tniyairii. After Miyairi (1909, Fig. 11). 



