( Fig. 4 I-L)
MATERIAL EXAMINED. — 14 sh., DW130.
REMARKS
New to Spanish waters. Compared to the paratypes from off Iceland illustrated in Warén (1996), our specimens are larger ( 1.5 mm vs 1 mm), with flatter whorls. Nevertheless the subsutural keel, very conspicuous at the beginning of the teleoconch and fading out later, and the narrow umbilicus bound by a deeply set spiral ridge, are similar. Considering that many other species (e.g. Rugulina fragilis (G. O. Sars, 1878), Ancistrobasis reticulata (Philippi, 1844), Cantrainea spp., Larsenia scalaroides Warén, 1989, among others) are shared with the assemblage described by Warén (1996), we tentatively consider them conspecific.