| The inner edge of the doublure appears to be entire, curved convexly outward. |
| A convexly carved plate or cupola in which there are three or four holes for finger holds seem to have been lids. |
| Paired tentacles short, proximally thick and convexly bulging, abruptly narrowed to an acute tip with incurving sides. |
| At the lower end of the firesteel the rim curves convexly downwards in two bands. |
| A cube at first glance shows the inside, and at second glance, the outside, protruding convexly into space. |
