Land Planarians.] SUBANTARCTIC ISLANDS OF NEW ZEALAND. 673 



Geoplana antarctica, n. sp. 



Body (in spirit) about 12 mm. in length by 2*5 mm. in maximum breadth (in 

 the middle). Strongly convex, but evenly rounded above ; rather more flattened 

 below ; tapering fairly gradually behind, but rather more bluntly than usual in 

 front. Lateral margins well rounded. Eyes numerous, and arranged as usual. 

 Peripharyngeal aperture about in the middle of the ventral surface, and genital 

 aperture at about one-third of the distance from it to the posterior extremity. 



Dorsal surface almost colourless ; very pale greyish-yellow, and without any 

 markings. There is, however, a distinct rather broad marginal band of olive-grey. 



Ground-colour of ventral surface like that of dorsal, but with a narrow light- 

 grey stripe on either side of the mid-ventral line, and traces of pale-grey mottling 

 submarginally. 



The specimen (in spirit) is strongly flexed ventrally, almost forming a circle. 

 It contains a large egg-capsule, which causes a great bulge on the dorsal surface 

 above the genital aperture. 



The single specimen is not mentioned in the list sent to me by Dr. Benham,. 

 but was found in a tube numbered 10, which also contained a land nemertine from 

 Enderby Island. The presumption is that the planarian came from Enderby Island 

 also. 



Geoplana aucklandica, n. sp. 



Body (in spirit) considerably elongated, about 41 mm. in length by 4*5 mm. in 

 greatest breadth ; broader behind than in front ; tapering very gradually to the 

 horseshoe-shaped anterior extremity, rather more suddenly behind. 



Dorsal surface strongly convex. Ventral surface flat, or even concave, separated 

 from the dorsal surface by very pronounced narrow lateral margins, which may be 

 slightly crenate. 



Eyes numerous, and arranged as usual. Peripharyngeal aperture well behind 

 the middle of the ventral surface. Genital aperture rather nearer to the peripharyn- 

 geal aperture than to the posterior extremity. 



Ground-colour of dorsal surface pale yellow or orange, with numerous short 

 dashes or specks of brown arranged in discontinuous and ill-defined longitudinal 

 stripes. Of these stripes, at least four may be recognised, arranged in two pairs, 

 and dividing the ground-colour into five approximately equal bands. The outer 

 stripe on each side contains more numerous and more darkly coloured specks than 

 the inner one. There are faint traces of another pair of stripes (or, better, bands of 

 specks), one on each side of the mid-dorsal line, in the median band of ground-colour. 



The ventral surface is pale-yellowish, without markings. 



The body in spirit becomes strongly curved ventralwards, so that the extremities 

 approach one another, and the integument of the dorsal surface has a strong tendency 

 to wrinkle transversely. 



There are two specimens of this species from Auckland Island,* closely re- 

 sembling one another. Their shape and general appearance in spirit remind me 

 strongly of Geoplana fletcheri, Dendy,t a Victorian and South Australian species, to 

 which it is probably closely related. 



* Other specimens were obtained under logs on Auckland Island and on Enderby Island. In life 

 the stripes are bright reddish-brown. — W. B. B. 



t Figured in Proc. Roy. Soc. Victoria, 1893, pi. x. 

 44— S. 



