Describes variability in the stamens and pollen of Lagerstroemia, which CD spoke of in Forms of flowers.
Also reports on similar phenomena in Pontederiacea (Heteranthera reniformis).
Has received from Paul Mayer an interesting paper on metamorphosis in Palaemonetes varians, which is also being studied by J. E. V. Boas in Denmark. Shows differences between larval development in Danish forms and those found in southern Italy.