192T.] S. Kemp: Larval Trematodes. 233 
peculiar cylinder in the interior of the ‘animal and sections were 
a complete failure. Major Sewell notes in explanation of his figures 
that there is a more or less well-defined groove round what appears 
to be the anterior extremity and sucker-like disc (s) in the middle 
of the (?) ventral surface. The (?) posterior part of the organism 
is divided by faint grooves (g), as shown in fig. A. These are 
visible only on the (presumed) ventral surface. On the dorsal 
surface, near the posterior extremity, there is a small aperture (). 
The outer parts seem to form a kind of test, lined by a thin 
membrane, and inside this there is a cylindrical body (c) with an 
apparently chitinous investment. At the end nearest the (?) 
dorsal grooves the extremity of this body is contracted to form 
a collar (7). Though the specimens had been fixed in Schaudinn’s 
fluid and were apparently well preserved, no further structure 
could be made out.—N. Annandale. 
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