106 AUSTRALIAN LAND PLANARIANS, 



spirit is midway between the ends, and the genital opening half 

 way between the pharyngeal and the posterior end. Length 

 of an ordinary specimen when crawling 70 mm. by 1 to 1^ mm. 

 in width. In spirit the yellow colour is completely dissolved out, 

 leaving the worm white; the stripes are darkened somewhat at 

 same time, probably by removal of the light yellow pigment. 

 Occasional specimens are strongly tinged all over with green, 

 giving them a peculiar yellow-green appearance. 



I have also found specimens in which the brown lines fade out 

 less than half way down the back, leaving the posterior half of 

 the dorsal surface pale yellow. In no case have I seen any trace 

 of a median dorsal line such as characterises G. medioUneaia, 

 Dendy. 



The egg capsule is of chocolate-brown colour, about 2| to 3 mm. 

 diam. One which I found early in February, 1897, and which 

 hatched out immediately after, contained eight young ones, 

 which were about 3 mm. in length. The eyes in these were 

 plainly marked in a single row round the anterior tip and right 

 down the sides. The brown colour of the tip and the dorsal lines 

 for a short distance back were also visible; the body colour was 

 pale yellow. 



Type specimen in Australian Museum; register number G. 1510. 



Hab. — Bundanoon, N.S.W. 



This handsome planarian is exceedingly abundant at Bunda- 

 noon (Moss Yale District), and I have noticed large numbers of 

 it during the last three summers. 



I have pleasure in associating the name of my friend, Mr. J. P. 

 Hill, F.L S., with this species in recognition of his kindly 

 assistance in collecting planarians for me. 



Geoplana ponderosa, n.sp. 



(PI. VL fig. 3.) 



Ground colour of dorsal surface pale sulphur-yellow. A fairly 

 large specimen in spirit has a median dorsal space of ground 

 colour about 1 mm. in width, bounded on either side by a band 



