Cryptozoic Fauna of New Zealand. 397 



8. Geoplana Laingii, sp. n. 



When crawling about 3 Indies long and \ inch broad ; 

 much flattened below and ridged on the dorsal surface, so as 

 to be triangular in cross section ; tapering gradually in front 

 and behind. Slimy and sticky as usual, but with the dorsal 

 surface minutely rugose or warty (granulated). When at rest 

 short and thick, slug-like. External apertures very far back. 

 Dorsal surface yellowish brown, finely mottled with a darker 

 tint of the same. In the raid-dorsal region is a narrow band 

 of dull orange, divided into two by a very fine median line of 

 darker brown, and edged on each side by a fine black line. 

 Anterior tip pinkish. Ventral surface pale yellow, finely 

 mottled with pale brown. 



This species was found under stones at the foot of Lake 

 Taupo in the North Island by Mr. R. M. Laing. 



9. Geoplana Oraffii, sp. n. 



Body when at rest very broad and flat and rather abruptly 

 pointed at both ends. Under surface very flat ; upper surface 

 sloping up on each side to a median longitudinal ridge, so 

 that the body is obtusely triangular in section. When 

 crawling long and narrow and more oval in section, narrower 

 in front than behind. Attains a length of about 2 inches 

 when crawling. The greater part of the dorsal surface is 

 very dark purplish brown, sometimes nearly black in colour. 

 Along the median ridge is a narrow band of much paler tint, 

 in which fine irregular longitudinal stripes or marblings of 

 greenish, bluish, or brownish tint may appear. Usually the 

 lateral margins of the dorsal surface are occupied each by a 

 narrow band of paler brown. The whole dorsal surface is 

 flecked with small specks and dashes of pale greenish blue, 

 clearly visible to the naked eye, and giving the animal a very 

 handsome appearance. The ventral surface is of a somewhat 

 paler brown than the dorsal, with a still paler median band 

 and margins. It is flecked all over with very minute specks 

 of whitish or very pale blue, and may have a finely marbled 

 appearance. In spirit the dorsal surface is strongly convex 

 and the ventral flattened, and the anterior end abruptly nar- 

 rowed. The peripharyngeal aperture is about central, and the 

 genital about halfway between it and the posterior extremity. 



This species is very common in gardens about Christchurch, 

 and I have also received it from Dunedin and Ashbarton. 



