44 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[282 



3) Testis, oviduct. — Myxoholus hylae Johnston et Bancroft 



III Reptilia 



1) Kidney (ren. tub.). — Myxidium danilewskyi Laveran 



Myxidium mackiei Bosanquet 

 Myxidium americanum Kudo 



2) Ovary. — Gen. et spec, incert. Mingazzini 



IV Insecta 

 1) Abdominal cavity. — Chloromyxum diploxys Gurley 



V Annelida 

 Myxoholus sp. Gurley 



The data in this section are summarized on the preceding page (Table I). 



D. THE EFFECT OF ENVIRONMENT ON THE ORGANAL DISTRIBUTION 



OF MYXOSPORIDIA IN HOSTS 



Myxosporidia are almost equally distributed among marine and fresh- 

 water fishes in regard to the number of species. This is shown in the follow- 

 ing table. 



TABLE II 



The number in parenthesis denotes the number of species in the corresponding genus. 



