Paper, 'Observations on the Hirudo complanata, and the Hirudo stagnalis, now formed into a distinct genus under the name, Glossiphonia' by Dr [James Rawlins] Johnson Illustrations for this paper have been separated from the manuscript and are found at PT/73/6/20. Subject: Zoology Published in Philosophical Transactions as 'Observations on the Hirudo complanata, and Hirudo Stagnalis, now formed into a distinct genus under the name, Glossopora'. Written by Johnson in London. Communicated by Sir Everard Home. Read 26 June 1817. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 2, 1833. 18 June 1817