PLATE Llll. 



PAGE 



Figs. 1, 2. Polylophus philippinensis, Gray, . .133 



Fig. la, h. Very youug specimeus ; natural size ; a, probably fixed ; with oscular 

 aperture ; h, free ; without oscular aperture ; natural size. 



Fig. 2. Longitudinal section of a small bud (combination figure) ; x 20. 



Figs. 3-5. Lanuginella pupa, 0. Schmidt, . . 130 



Fig. 3a, h. Young specimens, not fixed ; natural size. 



Fig. 4. A very young specimen, of globular form, without an oscular aperture ; 

 x30. 



Fig. 5. Longitudinal section of a young specimen, with commencing formation of 

 the oscular area ; x 70. 



