FISHERY BULLETIN: VOL. 86, NO. 3 



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Figure 7.— Ulceration in the mantle of Saccostrea commercialis with Australian winter disease. 



Figure 8.— Large abscess-type lesion in the connective tissue-gonad region of Saccostrea commercialis (code S-41-7) 



from Australia with Australian winter disease. 100 x . HHE stain (specimen S-41-7). 

 Figure 9. -Higher magnification photomicrograph from lesion in Figure 8. Note intracellular microcell parasites 



(Mikrocytos roughleyi sp. n.) with hemocytes. 1,000 x. HHE stain (specimen S-41-7). 

 Figure 10.— Heavy infection of Australian winter disease; microcell parasites in the gonad of S-41-4. 1,000 x . HHE 



stain. 



586 



