374 NOTES ON AUSTRALIAN LAND-PLANARIANS. 



18. Rhynchodemus niger, n. sp. 



Dorsal surface shining intense black ; sides and undersurface 

 black (fading to violet in spirit) but less intense, and duller, or the 

 undersurface black with a faintly indicated lighter stripe on either 

 side of the median line. 



Length of a living extended specimen 35 mm., breadth 2 "5 mm. 



Hah. — Guntawang. 



EXPLANATION OF PLATE V. 



All the figures are of the natural size and from living specimens unless 



otherwise stated. 

 Fig. I. — Geoplana ccerulea (blue-tipped variety). 

 Fig. 2. — G. subviridis, from a small spirit specimen. 



Fig. 2.' — ,, ,, (enlarged diagram shewing the pattern of the stripes). 



Fig. 3. — G. variegata, from a small extended living specimen. 

 Fig. 3.' — ,, ,, (diagram shewing the pattern of the stripes). 

 Fig. 4. — G. quinquelata, from a very large living specimen. 

 Fig. 5. — ,, ,, from a small spirit specimen. 

 Fig. 6. — G. viridis. 

 Fig. 7. — G, ornata. 

 Fig 8.— G. mimda. 

 Fig. 9. — Rhynchodemus Mosehyi. 



Fig. 10. — ,, ,, anterior extremity ( X 2), 



Fig. n. — R. trilineatiis. 



Fig. 12. — ,, ,, anterior extremity ( x 5). 

 Fig. 13. — G. viridis, anterior extremity of spirit specimen shewing the eyes 



(x2). 

 Fig. 14. — G. viridis, anterior extremity of young specimen with fewer eyes 



(x2). 

 Fig. 15. — G. qwinquelineata, anterior extremity ( x5). 

 Fig. 16. — ,, „ anterior extremity of young specimen with 



fewer eyes ( x 5). 



Note. — Fig. 1 is too black ; in fig. 7 the lithographer has filled in a portion 

 of the marginal stripe on each side with transverse lines instead of dots ; in 

 fig. 8 the median stripe is too light ; in fig. 15 the rows of eyes in the 

 crowded patch are too regular. 



