PLATE XII. 



Figs. 1 5. Verruca gibbosa, n. sp. 



Fig. 1. Tergum, exterior view; magnified 11 diameters. 

 Fig. 2. Scutum, exterior view; magnified 7 h diameters. 

 Fig. 3. Scutum and tergum attached to one another, interior view; magnified 5.1 



diameters. 

 Fig. 4. Scutum, interior view; magnified 7-J diameters. 

 Fig. 5. Tergum, interior view; magnified 7 J diameters. 



Figs. (j-7. Verruca niticla, n. sp. 



Fig. 6. Animal, seen from the side of the movable scutum and tergum; magnified 9 



diameters. 

 Fig. 7. Animal, seen from the side of the immovable scutum and tergum; magnified S 



diameters. 



Figs. 8-12. Verruca quadrangular is, n. sp. 



Fig. 8. Animal, seen from the side of the movable scutum and tergum; magnified 7. 1 , 



diameters. 

 Fig. 9. Animal, seen from the side of the immovable scutum and tergum ; magnified 7 .1 



diameters. 

 Fig. 10. Scutum and tergum, interior view; magnified 9 diameters. 

 Fig. 11. Tergum, exterior view; magnified 9 diameters. 

 Fig. 12. Scutum, exterior view; magnified 9 diameters. 



Figs. 13, 14. Verruca incerta, n. sp. 



Fig. 13. Animal, seen from the side of the movable scutum and tergum; magnified 9 



diameters. 

 Fig. 14. Animal, seen from the side of the immovable scutum and tergum; magnified 9 



diameters. 



Figs. 15, 16. Verruca obliqua, n. sp. 



Fig. 15. Animal, seen from the side of the movable scutum and tergum; magnified 7. 1 , 



diameters. 

 Fig. 16. Animal, seen from the side of the immovable scutum and tergum; magnified 



7 1 diameters. 



Fig. 17. Verruca obliqua, var. 



Fig. 17. Animal, seen from the side of the movable scutum and tergum; magnified Ih 

 diameters. 



Figs. 18, 19. Balanus tintinnabulum, Linn., sp., var. communis, Darwin. 



Fig. 18. Scutum, interior view; natural size. 

 Fig. 19. Tergum, interior view; natural size. 



Fig. 20. Balanus trigonus, Darwin. 



Fig. 20. Animal, lateral view; magnified 5 diameters. 



