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CHIYOMATSU ISHIKAWA. 
Fig. 69. — Embryo older than the last. Simple median eye and nerve 
striations are for the first time visible. X 150. 
Figs. 70 and 71. — Embryo slightly older than Fig. 69, showing the forma- 
tion of liver globules. X 40. 
Figs. 72 and 73. — Two stages of an embryo slightly older than that repre- 
sented in Figs. 70 and 71. X 150. 
Figs. 74 and 75. — Two views of an embryo of the same stage as Fig. 73. 
Fig. 76. — A longitudinal section of an embryo of the stage represented by 
the Figs. 74 and 75. X 65. 
Figs. 77 and 78. — Embryo further developed than the last, showing a 
change occurring in the form of the yolk-mass, x 40. 
Fig. 79. — Embryo about two days after the last, showing the intestinal 
caeca. X 40. 
Fig. 80. — Two pairs of antennae of the embryo given by Fig. 79. x 150. 
Fig. 81. — First maxilla of the same. X 150. 
Fig. 82. — Second maxilla of the same, x 150. 
Fig. 83. — Three maxillipedes and the first ambulatory leg of the right side 
of the same embryo. X 150. 
Fig. 84. — A labrum, a mandible, and maxillae of an embryo about twenty- 
four hours older than the one represented by Fig. 79. X 150. 
Fig. 85. — Embryo just hatched, from below. X 30. 
Fig. 86. — Telson of the same, x 60. 
Fig. 87. — First maxilla of the same. Camera d d and 4. 
Fig. 88. — Second maxilla of the same. X 150. 
Fig. 89. — First maxillipede of the same. x 150. 
Fig. 90. — Surface view of an antennal gland of an embryo represented in 
Fig. 68. x 400. 
Fig. 91. — Antennal gland of an embryo slightly more developed than Fig. 
68. X 400. 
Fig. 92. — Antennal gland of an embryo of about twelve hours before 
hatching. X 400. 
Fig. 93. — Antennal gland of an embryo just hatched. X 400. 
Fig. 94. — A section of the same. X 400. 
Fig. 95. — Extremity of the first antenna of the left side, from an embryo 
represented by Fig. 79, showing the olfactory setae, x 400. 
Fig. 96. — The same of the right side, from an embryo just hatched. X 400. 
Fig. 97. —The same from an embryo 4 mm. in length. X 400. 
Fig. 98. — First ambulatory leg of the left side of an adult animal. X 10. 
