FOATE. 2. 
All shells natural size. 
Figs. 1-56. P. gibba Férussac, from Guam. 
Figs. 1-8. Color-class unicolor, Tarague. 
Figs. 9-14. Color-class unicolor, Lolo. 
Figs. 15-20. Color-class bicolor, Tarague. 
Figs 21-23. Color-class bicolor, Aniguac. 
Fig. 24. Color-class bicolor, Merizo. 
Figs. 
Figs. 
Figs. 
Figs. 
Figs. 
Figs. 
Figs. 
Figs. 
Figs. 
25-35. 
36, 37. 
38, 39. 
40, 41. 
42-44. 
45-48. 
49, 50. 
51, 52. 
53-56. 
Color-class mitella, Tarague. 
Color-class mitella, Lolo. 
Color-class mitella, Dededo. 
Color-class mitella, inner Presidio. 
Color-class mitella, Salifan. 
Color-order mitella-rubra, Macajna second. 
Color-order mitella-rubra, Lonfit. 
Color-order mitella-rubra, Tarague. 
Color-order mitella-rubra, Dededo. 
