44 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[282 



3) Testis, oviduct. — Myxobcius hylat Johnston ct Bancroft 



m RZPTILIA 



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



Myxidium mackiti Bosanquet 

 Myxidium atnericanum Kudo 



2) Ovary. — Gen. et ^)ec. incert. Mingazzini 



rV Insecta 

 1) Abdominal cavity. — Chhromyxum diploxys Guriey 



V Annelida 

 Myxoboius ^. Guriey 



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



D. THE EFFECT OF ENVIRONMENT ON THE ORGANAL DISTRIBUTION 

 OF MYXOSPORmL\ 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. 



T.\BLE II 



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



