Striamoeba
This genus may well be identical to Thecamoeba?
Striamoeba at the Protist Information Server
S. corrugata
Jahn, Bovee & Griffiths (1974).
Schaeffer, A. (1926) "Taxonomy of the amebas." Pap.Dept.Mar.Biol.Carnegie Institut. Wash. Vol XXIV, 1-116.