PLATE 18 
EXPLANATION OF FIGURES 
88-93 Diastrophus nebulosus. 
88 An egg ready to be laid. X 430. 
89-90 Longitudinal sections through the nucleus of such an egg. X 1900. 
91 Transverse section through a nucleus in the same stage. 1900. 
92 The germ-line-determinant near the posterior end. X 1900. 
93 The mitotic division of a follicular epithelial cell. X 1900. 
94-97 Rhodites ignota. 
94 An egg ready to be laid. X 430. 
95 Part of an oocyte showing stages in the formation of secondary nuclei. 
1900. 
96 An older oocyte showing the arrangement of secondary nuclei. X 620. 
97 Two secondary nuclei much enlarged. X 2500. 
560 
