Excerpt from Transactions of the Zoological Society of London, 1912-1915, Vol. 20 The gonads are in pairs, interradially placed, and confined to the disc. Each consists of a bunch of short tubes, whitish in the male and orange-coloured in the female. These are attached to the inner aspect of the body-wall close to the mid-interradial line, a short distance upwards from the margin on the aboral side. Here the body wall is pierced by the egg-ducts. In full-grown specimens the number of egg-tubes in each gonad may amount to several hundreds. These are somewhat indistinctly divided into a few (5 - 7) main groups, which in turn are capable of subdivision into small ultimate clusters of three to seven tubes. The tubes in each of these clusters join together at their attached ends to Open into the same terminal branch of the egg-duct. While the majority are cylindrical or sausage-like in shape, simple branching may occur, characterized usually by a single dichotomous division near the free end, and occasionally also by the presence of one or two short lateral branches on the stem. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.