Plate XX. Stage X.
Plate XXI. 13g, Stage X; 14, Stage XI; 15-15c, Stage XII.
Plate XXII. 15d-15f, Stage XII; 16-16d, Stage XIII.
Plate XXIII. 16c-16g, Stage XIII; 17, Stage XIV.
Plate XXIV. 17a-17g, Stage XIV; 18, Stage XV; 19, Stage XVI.
Plate XX. Stage X.
Plate XXI. 13g, Stage X; 14, Stage XI; 15-15c, Stage XII.
Plate XXII. 15d-15f, Stage XII; 16-16d, Stage XIII.
Plate XXIII. 16c-16g, Stage XIII; 17, Stage XIV.
Plate XXIV. 17a-17g, Stage XIV; 18, Stage XV; 19, Stage XVI.