Plate V. 



Fig. 73. — Larva of the 3 p. c. stage, dorsal view (from life), x 180. 



Fig. 74. — Larva of the 3 p. c. stage, dorsal view (from a preserved specimen) 

 x 210. 



Fig. 75. — Larva of the 4 p. c. stage, ventral view (from life), x 215. 



Fig. 76. — Larva of the 4 p. c. stage, dorsal view (from a preserved specimen). 

 In this larva the secondary shell has formed in addition to the 

 protegulnm. The animal is shown only in outline, x 210. 



Figs. 77, 78. — Larva of the 5 p. c. stage, ventral and dorsal views respec- 

 tively (from life), x 220. 



Fig. 79. — Larva of the G p. c. stage, ventral view (from life), x 220. 



Fig. 80. — Body proper of a larva of the 6 p. c. stage, dorsal view (from 

 life), x 215. 



