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 Chrysomelidæ).
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 Silphidæ).
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, equatorial plates.
150. Second spermatocyte, showing metakinesis of the small chromosome.
