262 Transactions. — Zoology. 



black line " mentioned by Hutton as occurring near the mar- 

 gin of the stripe is also variable in its development. 



I have long suspected that my G. graffii must be nearly 

 related to G. moseleyi, but in the absence of more detailed 

 information as to the latter I did not venture upon an 

 identification. I now find that the species, assuming ray 

 present identification of Mr. Suter's specimens to be correct, 

 are indeed very near together, the only tangible distinction 

 lying in the paler-coloured ventral surface of G. moseleyi, and 

 ttae absence from the ventral surface of any distinct speckling 

 and of the distinct pale median band which characterize G. 

 graffii. G. graffii also occurs at Dunedin, as I have previously 

 recorded. 



Perhaps in the future it may be desirable to unite the 

 several varieties of G. graffii which I have described, together 

 with G. iris and the Dunedin form described by Hutton, 

 under the one name, G. moseleyi, which will then have to 

 be regarded as a widely- spread species with numerous local 

 varieties. 



G-eoplana inaequalistriata, Dendy. 



I have found several more specimens of this species in my 

 garden near Christchurch since writing the last part of these 

 notes. I also obtained one planarian at Jackson's, on the 

 Teremakau, which may possibly belong to the species, but it 

 is not quite typical, and in some respects resembles G. graffii. 



Geoplana jacksoniana, n. sp. 



Body at rest in life much flattened, slightly convex above, 

 very broad, tapering equally in front and behind. Movements 

 very sluggish. Dorsal surface rich-brown marbled w^ith short 

 longitudinal dashes of grey and dull-orange, the orange dashes 

 more abundant and paler in the middle line and above the 

 margins. Ventral surface pale reddish-brown very minutely 

 dusted with darker grey, except below the margins, where the 

 brown is more intense ; with indications of a pale narrow 

 median line. Anterior tip grey. 



In spirit the body is strongly convex dorsally and concave 

 ventrally, 43mm. long by 6-5mm. broad; genital aperture 

 15mm. and peripharyngeal aperture 21mm. from the pos- 

 terior end. Eyes as usual, with crowded lateral patches. 



This species appears to be nearly related to G. gelatinosa, 

 of which it may prove to be a variety, but the specimens look 

 so different when placed side by side that I do not care to 

 unite them under a common name. The difference lies 

 chiefly in the thicker body and elongated colour-dashes of 

 G. jacksoniana, which is also considerably larger, and has 

 the external apertures more anteriorly placed. The sudden 



