_Family Coccinellidae_).

94. Equatorial plate of spermatogonium, 17 large chromosomes and 1 small
one.

95. First spermatocyte, spireme stage, showing the unequal pair.

96-97. First spermatocyte, late prophases.

98. First spermatocyte, metaphase, showing chromosomes of different
forms.

99-100. First spermatocyte, equatorial plate.

101. Unequal heterochromosome pair from a metaphase.

102. First spermatocyte, anaphase; ordinary chromosomes stippled to show
more clearly the metakinesis of the unequal pair.

103. Second spermatocyte, equatorial plates.

104. Second spermatocyte, prophase.

105-106. Abnormal giant spermatids, probably in process of degeneration.

_Euphoria inda_ (_Family Scarabaeidae_).

107. Equatorial plate of spermatogonium, 20 chromosomes. The 2 smallest
are the unequal pair of heterochromosomes (_l_ and _s_).

108. Resting spermatogonium, showing plasmosome (_p_).

109. First spermatocyte, spireme stage.

[Illustration: STEVENS PLATE X.

N. M. S. del.

COLEOPTERA]

PLATE XI.

_Euphoria inda._

FIGS. 110-111. First spermatocyte, prophases.

112-113. First spermatocyte, late prophase.

114-116. First spermatocyte, metaphase.

117. First spermatocyte, equatorial plate, _x_ the unequal pair.

118-120. First spermatocyte, anaphase.

121. First spermatocyte, daughter plates.

122. Second spermatocyte, prophase.

123. Second spermatocyte, equatorial plates.

124-125. Second spermatocyte, daughter plates of the two classes.

126-127. Second spermatocyte, anaphase.

128-130. Spermatids, _n_ the chromatin nucleolus.

_Blepharida rhois_ (_Family Chrysomelidae_).

131-132. First spermatocyte, spireme stages, showing the
heterochromosome group.

133-135. First spermatocyte, beginning of metakinesis.

136. First spermatocyte, equatorial plate, _x_ the unequal pair.

137. First spermatocyte, late anaphase, showing the heterochromosomes
_l_ and _s_.

138. Second spermatocyte, equatorial plates.

139-140. Second spermatocyte, daughter plates of the two classes.

_Silpha americana_ (_Family Silphidae_).

141. Equatorial plate of spermatogonium, 40 chromosomes--39 large, 1
small.

142. Resting nucleus of spermatogonium, showing 2 plasmosomes (_p_).

143-144. First spermatocyte, spireme stage.

145. First spermatocyte, prophase.

146-147. First spermatocyte, metaphase.

148. First spermatocyte, equatorial plate.

149. Second spermatocyte, equatoria