Protoschmidtia foraminosa f. incrustans Czerniavsky, 1880

Protoschmidtia foraminosa f. incrustans Czerniavsky, 1880: 98

Described by Czerniavsky from Sebastopol, Crimea, approximate coordinates 44.62°N 33.5°E (syntypes ZIN-RAS 10962 and 11404). As this is the first mentioned forma it is here chosen as the nominotypical forma to be named P. foraminosa f. foraminosa . As indicated above we propose to merge the forma with the species Haliclona foraminosa (Czerniavsky, 1880) .

The present combination is a senior primary homonym of Protoschmidtia grimmi f. incrustans Czerniavsky, 1880: 102 . Even though this is currently assigned to the synonymy of Metschnikowia tuberculata Grimm, 1877, the junior name must be replaced (ICZN art. 57.2). I propose Protoschmidtia czerniavskyi nom.nov., which is a junior synonym of Metschnikowia tuberculata Grimm, 1977 .