782 GASTROPODA. [Puliitnuata. 



Diameter Maj., 65mm. ; min., 56mm. : height, 28mm. (type) 



Embryonic shell subglobose, flat above, with radial plaits and spiral 

 lines ; periphery and the narrowed base smooth. Umbilicus very 

 narrow. Diameter, 6*5 mm. ; height, 5| mm. 



Egg roundly oval, one end slightly more pointed, calcareous, with 

 a thin fulvous epidermis, surface finely granular. Diameter, 8-5 mm. : 

 length, 10 mm. 



Animal and Anatomy. Godwin-Austen, P. Mai. S.. i, 6, pi. 1, 

 f. 1-13 ; Collinge, A.M.N.H. (7), vii, 68, pi. 2, f. 17-21 ; Godwin- 

 Austen, A.M.N.H. (7), vii, 488 ; Murdoch, P. Mai. S., iv, 171, v, 272. 



Animal when alive apparently very dark indigo-grey. There is 

 no sign of a mucous pore. The foot below is pale grey, and is much 

 wrinkled into folds directed centrally to where the powerful retractor 

 muscles have their attachment ; it is produced and narrows rapidly 

 in front, broad and rounded behind, and it evidently can be very 

 widely and laterally extended in life, so as to be oval in form, which is 

 still its character in the spirit specimen. There is no central area. 

 The foot is striated above by fine equidistant grooves, united by finer 

 cross-lines ; the first terminate in a narrow pallial groove running 

 parallel to the edge of the foot. There are no mantle-lobes, though the 

 mantle is no doubt recurved over the edge of the peristome in life. 

 The neck lappets or lobes are small, the right simple, the left in two 

 lobes. (Godwin-Austen.) 



The radala is broad and long, the rows forming an acute angle 

 directed backwards. Formula 67 + 1 + 67. The centre tooth is 

 small, half the size of the following admedian teeth, and is short and 

 straight-sided. The median teeth are long aculeate, flatter on the 

 inner side, the points slightly bending inwards like those of swords ; 

 there is a gradual transition to the outermost laterals, no marked 

 change of form occurring, the teeth getting shorter until of a triangular 

 shape. (Godwin-Austen.) 



Reproductive Organs. The male organ is elongate, simple, with 

 the retractor muscle at the very end. The vas deferens is a long fine 

 tube closely bound to the sides of the verge for the greater portion of 

 its length, and entering the latter near its distal end. A spermatheca 

 is present, arising from the free oviduct on the side toward the verge. 



Type in the K.K. Hof museum, Vienna. 



Hab. North Island : Manawatu ; Shannon ; Levin. South Island : 

 Near Cook Strait, on limestone mountains, 3,000 ft. to 4,000 ft. above 

 sea (Hochstetter) ; Collingwood ; Waitapu Peak; Pelorus Valley; 

 hills around Mount Stokes ; West Wanganui, 50 ft. to 60 ft. above 

 sea-level (Kingsley) ; Pictou ; Stephen Island (Captain Bollons). 



lie marks. These snails no doubt feed on earthworms, but it is 

 inost likely that they also devour native slugs (Athoracophorus), as they 

 are found hibernating in rotten logs, matai by preference, where the 

 slugs also occur. According to Kingsley, they may be found also 



