Remarks on the genus Orthragoriscus

Some time ago our Museum received a very young specimen (in liquor) of Orthragoriscus-spec.? This acquisition to the series of O.-specimens in the Leyden Museum gives me an opportunity to publish the observations I made in comparing this young animal with the other specimens in our collection. The drawing (3 X natural size), joined to this publication, is made under my direction by Mr. Raar and is a most exact one.