300 Transactions. — Zoology. 



Maoriana aorangi, Sut. From Hooker Valley, South Island. 

 Plate XXIII., figs. 51, 52. 



Jaio arcuate, narrow, slightly tapering, with about ten dis- 

 tant vertical striae. 



Badula tongue-shaped, membranaceous, consisting of 

 about 90 straight transverse rows of teeth, 10 — 7 — 1 — 7 — 10. 



Central tooth rectangular, somewhat longer than broad,' 

 reflection tricuspid ; middle cusp narrow, reaching with its 

 short cutting-point to the posterior end of the base ; side- 

 cusps short, rounded, cutting-points rudimentary. 



Laterals much tlie same as the central, but the median 

 cusp reaching a little beyond the base. 



Marginals broader than long, tridentate. the median tooth 

 the longest, the sixteenth very broad and short, bidentate, and 

 the last minute, quadrate, with a rudimentary denticle. 



Pupa neozelanica, Pf. From Forty-mile Bush, North Island. 

 Plate XXIII., figs. 53, 54. 



Jaiu arcuate, ends blunt, with distant vertical striae ; 

 upper margin slightly denticulated, a blunt median projection 

 on the cutting-edge. 



Badula tongue-shaped, consisting of about 90 straight 

 transverse rovv's of teeth, 11 — 5 — 1 — 5 — 11. 



Central almost quadrate, indented at its anterior end ; re- 

 flection tricuspid, the middle cusp and its short cutting- 

 point reaching within a short distance from the posterior end 

 of the base ; side-cusps with a small cutting-point each. 



Laterals somewhat larger than the central, but, otherwise, 

 very much like it ; median cutting-point extending a little 

 over the next row of teeth. 



Marginals broader than long ; sixth to twelfth tooth tri- 

 dentate, the middle tooth being the largest ; the thirteenth to 

 ^fteenth with four denticles, of which the second is somewhat 

 longer ; last marginal broad and narrow, with one blunt 

 cutting-point. 



The radula of our Pupa differs considerably from all the 

 others of the genus I have seen. 



Limnaea alfredi, Sut. From Hooker Valley, South Island. 

 Plate XXIIL, figs. 55, 56. 



Jaio consisting of three pieces, as is well known for the 

 genus. 



Radula tongue-shaped, consisting of about 90 straight 

 transverse rows of teeth, 16 — 5 — 1 — 5—16. 



Central rectangular, twice as long as broad, narrower 

 anteriorly, reflection minute, bicuspid. 



Laterals almost quadrangular, slightly sinuated anteriorly, 

 reflection about one-third of the length, broad, with two long 



