Material examined. Vernadsky Ridge, TTR 15, stn AT 574, 1 ind. (DBUA 001067.01); Pen Duick Escarpment, TTR 16, stn AT 600, 4 inds. (DBUA 001068.01).
Ecology and distribution. In the Eastern Atlantic A. grandisquama has been recorded from Iceland south to the Azores and Cape Verde Islands at depths of 861–1635 m (Paterson 1985). In the Gulf of Cadiz it was collected from carbonate chimneys and crusts at shallower depths (508–610 m) (Fig. 7 A).