1903. ] POLYCLADS OF THE ‘‘SKEAT EXPEDITION.” 313 
arrangement of the eyes at the anterior end of the body is shown 
in text-fig. 55 A and towards the hinder end in 59 B. 
The only other elongate form exhibiting this character with 
which I am acquainted is Cestoplana ? maldivensis mihi. This is 
almost certainly a Latocestus. 
Text-fig. 55. 
Eye-spots of Latocestus argus. 
I can detect no rhabdites in the epidermis. The parenchyma 
is very dense, and nervous tissue abundant on the ventral side 
just within the body-wall muscles. 
The terminal parts of the reproductive apparatus are almost 
exactly similar to those figured by von Plehn [7] for Latocestus 
paciticus. 
