PUA LS 13: 
All shells natural size. 
Figs. 1-59. P. gibba Férussac, from Guam. 
Figs. 1-3. Color-order phza-rubra, Lolo. 
Fig. 4. Color-order phea-rubra, Ukudu. Longest shell. 
Figs. 5, 6. Color-order phza-rubra, Lolo. 
Fig. 7. Color-order phza-rubra, Macajna second. 
Fig. 8. Color-order phza-rubra, Santa Rosa, decorticated. 
Fig. 9. Color-order phza-rubra, Lolo, adolescent. 
Figs. 10, 11. Color-order phza-rubra, Santa Rosa, adolescents. 
Figs. 12-14. Color-order phea-purpurea, Macajna second. 
Figs. 15-19. Color-order phea-purpurea, Asados. 
Figs. 20, 21. Color-order phea-purpurea, Macajna second, adolescents. 
Figs. 22, 23. Color-order phza-purpurea, Asados, adolescents. 
Fig. 24. Color-order castanea-rubra Dededo. 
Figs. 25-27. Color-order castanea-rubra, Macajna second. 
Figs. 28-31. Color-order castanea-purpurea, Pago north. 
Fig. 32. Color-order castanea-purpurea, Macajna second, adolescent. 
Fig. 33. Color-order vespera-rosea, Lolo. Shortest and narrowest shell. 
Figs. 34-42. Color-order vespera-rosea, various localities. 
Figs. 43, 44. Color-order vespera-rosea, adolescents. 
Figs. 45-51. Color-order vespera-cyanea, various localities. 
Figs. 52-56. Color-class marginata, Dungcas. 
Fig. 57. Embryonic shell, white type, from unicolor adult. 
Fig. 58. Embryonic shell, tinged apex, from mitella adult. 
Fig. 59. Embryonic shell, brown type, from phea adult. 
