CNIDOSPORIDIA, ACTINOMYXIDIA 663 



S. gigas Granata (Fig. 286, c). In the coelom of Limnodrilus hoff- 

 meisteri (Granata, 1925). 



Genus Hexactinomyxon Stole. Each of 3 shell-valves prolonged 

 into 2 processes; spore appears as a 6-armed anchor. 



H. psammoryctis S. (Fig. 286, e). In the gut-epithelium of Psam- 

 moryctes barbatus; sporoplasm multinucleate. 



Genus Synactinomyxon Stole. Spore with 2 prolonged shell-valves 

 and 1 conical valve. 



S. tubificis S. (Fig. 286, /, g). In the gut-epithelium of Tubifex 

 tubifex. 



Genus Neoactinomyxum Granata. 3 shell-valves without any pro- 

 cess, distended to hemisphere. 



N. globosum G. (Fig. 286, h). In the gut-epithelium of Limnodrilus 

 udekemianus ; spore with numerous sporoplasms (Granata, 1925; 

 Jfrovec, 1940). 



Genus Guyenotia Naville. Pansporoblast with 8 spores; spore 

 spherical with 3 shell-valves, each drawn out posteriorly into digiti- 

 form process, longer than diameter of spore; sporoplasm with 32 

 nuclei. 



G. sphaerulosa N. (Fig. 286, i). In the gut-epithelium of Tubifex 

 tubifex; spores 15/x in diameter; appendages of mature spore 40ju long. 



References 



Auerbach, M.: (1910) Die Cnidosporidien. Leipzig. 



— (1912) Studien iiber die Myxosporidien der norwegischen 

 Seefische und ihre Verbreitung. Zool. Jahrb. Syst., 34:1. 



Awerinzew, S.: (1913) Ergebnisse der Untersuchungen iiber para- 

 sitische Protozoen der tropischen Region Afrikas. III. Zool. 

 Anz., 42:151. 



Bond, F. F. : (1938) Cnidosporidia from Fundulus heteroclitus. Tr. 

 Am. Micr. Soc, 57:107. 



— (1938a) The doubtful relationship of Sporozoa to the ulcers 

 of Fundulus heteroclitus. J. Parasit., 24:207. 



— (1939) The seasonal incidence of myxosporidian parasites in- 

 fecting Fundulus heteroclitus. Tr. Am. Micr. Soc, 58:156. 



Bremer, H.: (1922) Studien iiber Kernbau und Kernteilung von 

 Myxidium lieberkiihni Butschli. Arch. Protist., 45:273. 



Butschli, O.: (1881) Beitrage zur Kenntnis der Fischpsorosper- 

 mien. Ztschr. wiss. Zool., 35:629. 



(1882) Myxosporidia. Bronn's Klassen und Ordnungen der 



Protozoa. 1:590. 



Carini, A.: (1932) Myxidium lindoyense n. sp., Rev. Biol. Hyg., 3: 

 83. 



Caullery, M. and Mesnil, F.: (1905) Recherches sur les Actino- 

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