PLATE XXIV 



Fig. i — 3. Balaiius proripiens n. sp. 



Fig. 1. Outer maxillae, with left-hand lobes; magnified 64 diameters. 



Fig. 2. Third cirrus, longer ramus, last segments; magnified 144 diameters. 



Fig. 3. Fourth cirrus, segments II — IV; magnified 206,5 diameters. 



Fig. 4 — 10. Balanus pentacrini n. sp. 



Fig. 4. Shell, lateral view; magnified 10 diameters. 



Fig. 5. a and b, scutum and tergum, internal view; magnified 10 diameters. 

 c and d. scutum and tergum, external view; magnified 10 diameters. 

 Fig. 6. Labrum, with left-hand palpus; magnified 64 diameters. 

 Fig. 6*. Labrum of other specimen; magnified 144 diameters. 

 Fig. 7. Mandible; magnified 64 diameters. 

 Fig. 8. Maxilla; magnified 64 diameters. 

 Fig. 9. Outer maxillae; magnified 64 diameters. 

 Fig. 10. Sixth cirrus, 11" 1 segment; magnified 64 diameters. 



Fig. 11 — 16. Acasta conica n. sp. 



Fig. 11. Shell, lateral view; magnified 10 diameters. 



Fig. 12. a and b, scutum and tergum, internal view; magnified 10 diameters. 

 c and d, scutum and tergum, external view; magnified 10 diameters. 

 Fig. 13. Mandible; magnified 144 diameters. 

 Fig. 14. Outer maxillae; magnified 44.5 diameters. 

 Fig. 15. Third cirrus, lower segments; magnified 206,5 diameters. 

 Fig. 16. Fourth cirrus, pedicel and lower segments; magnified 144 diameters. 



Fig. 17 — 19. Acasta nitida n. sp. 



Fig. 17. Shell, larger specimen, lateral view; magnified 4 diameters. 

 Fig. 18. Shell, smaller specimen, front view; magnified 10 diameters. 

 Fig. 19. Mandible; magnified 44.5 diameters. 



