PLATE I. 



Figure 1. Stictodiscus radiatus, n. sp. . 



2. Stictodiscus japonicus, n. sp. . 



3. Stictodiscus radiatus, n. sp., var. no v. 



4. Stictodiscus affinis, n. sp. 



5. Stictodiscus anceps, u. sp. 



6. Stictodiscus affinis, n. sp., var. nov. 



7. Stictodiscus adensteinii (Grun.), Cstr. 



8. Stictodiscus reticularis, n. sp. 



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