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.