Plate, pentacrinoid larva after separation of oral valves by [Edwin M Williams] Figure 1 from plate XXVI showing the pentacrinoid larva of the Antedon rosaceus immediately after the complete separation of the oral valves. Subject: Oceanography Published in Philosophical Transactions as 'On the embryogeny of Antedon rosaceus, Linck (Comatula rosacea of Lamarck)'. Communicated by Thomas Henry Huxley. Received by the Royal Society on 29 December 1862. Read 5 February 1863. [1862]