Abstract

Five species (of which three are presented in open nomenclature) of the reticulate metacope ostracode of Amphicostella from the Holy Cross Mountains in Poland have been examined by pattern analysis. The result indicates strong intraspecific fluctuations in the number of meshes in the posterior part of valves and quite stable relations in this respect in the adductorial and anterior parts of carapaces. Although this opinion coincides with the outcomes obtained from a Recent reticulate podocope of Japan, it is interpreted here in different terms. In addition, the reticular elements of the valves, coded with letters and Arabic and Roman numerals, are shown in a new form of record, making comparative studies of the reticulum easier and more perspicuous.

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