Genus IIYMENOL/EMUS. (Peculiar to New Zealand.) 
Hymenoltemus malacorhynchus, Gmelin. Whistling or 
Mountain Duck. “ Wio.” (Case VIII. Nos. 9 and 10 : 
male and female.) 
This singular Duck inhabits the mountain-streams, and is 
generally to be met with among the rapids or in the deep 
pools of water below them, where it appears to subsist chiefly 
on a species of caddisworm. Its bill is furnished with a 
peculiar fleshy membrane to enable it to collect this kind of 
food. 
Order PYG0P0DES. 
Fam, PODICIFEDIDiE. 
Genus PODICEPS. (Cosmopolite.) 
1. Podiceps cristattjs, Linn. Crested Grebe. (Case XI. 
No. 7.) 
A very rare species in New Zealand, and almost confined 
to the Alpine lakes. 
2. Podiceps rufipecttjs, Gray. Dabchick. “ Totokipio.” 
(Case III. Nos 17 and 19 : male and female.) 
Like the other members of the group, this little Grebe 
dives with amazing agility, and, unless taken by surprise, 
