PLATE VI. 
. Navicuna unposa, Ehrenberg. 
Navicuna incurva, Gregory. 
. Navicua Binopis, Ehrenberg. 
. NavicuLa RHYNCHOCEPHALA, Kiitzing. 
NavicuLa amBicua, Ehrenberg. 
. Navicuna cuspipara, Kiitzing. 
Navicuta Rosretium, Smith. 
NavicuLa IntEGRA, Smith. 
. Navicuta rutva, Nitzsch. 
Navicua sERians, De Brébisson. 
NavicuLa RHomBorpEs, Ehrenberg. 
NavicULs CRASSINERVIA, De Brébisson. 
Navicuna VENETA, Kiitzing. 
Navicuta Crucicuta, Smith. 
Navicuta Fouzis, Ehrenberg. 
