PLATE XII 



Fig. i — 3. Verruca capsula n. sp. 



Fig. 1. Shell, seen from the side of the moveable valves; magnified 5 diameters. 

 Fig. 2. Shell, seen from above; magnified 4 diameters. 



Fig. 3. Moveable scutum (left-hand figure), and moveable tergum (right-hand figure), internal view; 

 magnified 8 diameters. 



Fig. 4 — 6. Verruca navicula n. sp. 



Fig. 4. Shell, seen from the side of the moveable valves; magnified 7 diameters. 



Fig. 5. Shell, seen from the side of the fixed valves; magnified 7 diameters. 



Fig. 6. Shell of younger specimen, seen from the side of the moveable valves; magnified 30 diameters. 



Fig. 7 — 8. Verruca cassis n. spT 



Fig. 7. Shell, seen from the side of the moveable valves; magnified 8,5 diameters. 

 Fig. 8. Shell, seen from the side of the fixed valves; magnified 8,5 diameters. 



