398 Prof. A. Dendy on the 



10. Geoplana subquadrangulata, sp. n. 



In shape, size, and general coloration this little Planarian 

 closely resembles the Victorian G. quadrangulata and 

 G. ventropunctata. In some respects it appears to connect 

 these two species ; and I am very doubtful whether all these 

 three should not be considered as mere varieties of the same. 

 The chief distinguishing feature of the New Zealand form is 

 the presence of three well-marked stripes of dark brown on 

 the dorsal surface, one very narrow median stripe and a pair 

 of much broader ones. 



The lateral and ventral surfaces may or may not be mottled 

 with dark brown, and thus we have two varieties of the New 

 Zealand form corresponding to the Victorian ventropunctata 

 and quadrcmgulata respectively ; but these two varieties are 

 in New Zealand connected by intermediate forms, and occur 

 mixed up together in the same localities. 



The species is very common at Christchurch, Ashburton, 

 and Dunedin, while at the Bluff, in the extreme south, I 

 found what seems to be another variety of the same with 

 three dark stripes on each side of the mid-dorsal stripe. 



11. Geoplana inwqualistriata, sp. n. 



The body in life is flat ventrally and convex dorsally. 

 When fully extended (about 2|- inches in length) it is long 

 and narrow and tapers gradually to each end. The dorsal 

 surface is dark brownish grey, with streaks of pale dull 

 yellow arranged as follows : — a narrow median stripe con- 

 tinuous from end to end ; on each side of this comes an 

 uninterrupted band of the dark grey, occupying about one 

 quarter of the total width of the dorsal surface. The outer 

 quarter of the width on each side is also of dark grey ground- 

 colour, but is interrupted by long, narrow, discontinuous, 

 overlapping stripes of pale yellow. Towards the lateral 

 margins the yellow comes to preponderate over the grey, and 

 thus appears to form the ground-colour. The anterior extre- 

 mity is pink. On the ventral surface the yellow colour pre- 

 dominates, and thus forms the ground-colour, which is 

 streaked with irregular, discontinuous, narrow, close-set stripes 

 of dark brown. A very narrow band on each side of the 

 ventral surface is free from the dark streaks. The peri- 

 pharyngeal aperture in spirit is a little behind the middle, and 

 the genital much nearer to it than to the posterior end. 



I found this worm on the asphalt path in my garden near 

 Christchurch. 



