ON THE VICTOEIAN LAND PLANARIANS. 79 



Genus Rhynchodemus. 



This genus is distinguished from the preceding principally by the possession 

 of only two, multicellular eyes, situate near the anterior extremity, and on the dorsal 

 surface. Although apparently not uncommon in New South Wales, five species being 

 described by Messrs. Fletcher and Hamilton (loc. cit.), only a single specimen has as 

 yet been found in Victoria, and that in the Croajingolong district, not very far from 

 the New South Wales border. The species is, however, a new one. 



15. Rhynchodemus victorice, n. sp. (Figs. 16, 15a). 



Body (in spirit) much flattened, especially on the ventral aspect, not tapering 

 evenly to the anterior extremity but with a slightly developed neck, which seems, 

 indeed, to be characteristic of the genus {vide Figs. 15, 15^). The opening into the 

 peripharyngeal chamber is very distinctly margined and situate a little behind the 

 middle of the ventral surface ; the genital opening is about half way between it and 

 the posterior end of the body. The eyes are very near the anterior extremity (Fig. 

 15, e). Professor Spencer informs me that the principal colour of the dorsal surface 

 in the living animal was French grey or "elephant's breath." At the anterior end, on 

 the dorsal surface, the following stripes are visible : — A narrow dark median stripe, 

 dying out about half way down the body and edged on each side by a creamy white 

 stripe of about the same width and dying out a little before the dark one. Just 

 above each lateral margin of the body is another narrow creamy white stripe, soon 

 dying out. The two white stripes of each side unite near the anterior extremity and 

 at their point of union the eye of that side is situated (Fig 15, e). The ventral 

 surface in the living animal was lighter grey, with a single, median, creamy white 

 stripe dying out just behind the genital aperture, and a similar stripe very near the 

 margin on each side also dying out towards the posterior end. Length in spirit 

 about 26 mm., greatest breadth about 3 mm. 



I received a single spirit specimen of this interesting Pianarian from Professor 

 Spencer, who collected it at Croajingolong. Professor Spencer supplied me with the 

 description of the colours of the living animal, but the arrangement of the stripes I 

 was obliged to make out in the preserved specimen. 



Locality. — Croajingolong (Victoria). 



