comparatively larger flattened area and resultant confinement of the very fine ribs. 11. Problem of immature scaphites came up. JAJ is calling nodeless, small specimens, not uncoiled but with complete body chamber Ponteixites (Warron 1934) TRSC, 3rd ser., sec. 4, vol. 28, p. 81-99, pls.) Those he has in "Upper Bezrpaw", or what we assume is high Mobridge. To me they look like immature scaphites but George says no - inner whorls of scaphites at this horizon have obvious nodes - moreover most of the Ponteixites (but not all) occur with large Rhæoboceras. Obviously it is going to be necessary to firmly establish the small Foxhills ammonites which don't uncoil as identical to inner whorls of undoubted scaphites before they can legitimately be called "immature scaphites". Might do well to try same for Mobridge. JAJ has one specimen from lower in Bezrpaw which is unlike any scaphite interior, and unlike the inner whorls of any Ræboceras which JAJ has in his collections