69 
ledge of the true conditions has made it possible to disclose the 
same features on a renewed, laborious examination of the oblique 
longitudinal sections of the type specimen. The side branches 
project in a large number and „ihre bedeutende dorsoventrale Aus- 
dehnung“ previously noted, and their dense gatherings make the 
alimentary system the most preponderant one observed by me in 
any Acotylean Polyclad. On horizontal sections scarcely anything 
but intestine is visible, interrupted by bundles of very coarse 
dorso-ventral fibres; also on* longitudinal sections the mass of the 
intestine is overwhelming. This depends to a great extent upon 
two facts. Firstly, in all sectioned animals gonads were in un- 
