Early in December of the present winter, several specimens of Asteracanthion violaceus (L.) were procured, in the peculiar pregnant condition described by Sars. The disk was raised into a hump, and the rays drawn together at the base, to form the “marsupium” for the protection of the young. All the eggs or embryos in a single marsupium were at the same stage of development. In the least advanced, the eggs were undergoing the later stages of yelk-segmentation, while in others this process had been completed. In other individuals the embryos were partially or fully formed.