Pseudosieberella (Pentameridae), nouveau genre Couvinien, et genres apparentes

The author establishes Pseudosieberella n. gen. Its type species, P. corrugata , n. sp., from the upper part of the Couvinian of Couvin is described as well as two others species assigned to it, P. cf. corrugata , from the upper part of the Couvinian of Hampteau, at the north-east of Marche-en-Famenne in the Ourthe's valley, and Gypidula montana SPRIESTERSBACH, J., 1942 from the « Ohler Schiefer » (late Couvinian) of Koppelweide in the Bergisches Land (Germany). Comparison is made with the genera Sieberella OEHLERT, D. P., 1887 and Ivdelinia ANDRONOV S. M.,1961.