Genus PLOT US. (Various parts of America, Asia, and 
Africa, Australia and New Guinea.) 
Plotus nov^e Hollands, Gould. (Case XI. Nos. 8 and 9 : 
male and female.) 
An inhabitant of Australia and New Guinea. Occurs only 
occasionally in New Zealand. 
Genus DYSPORUS. (All parts of the Globe.) 
Dysporus serrator, Banks. Gannet. “ TakupuV (Case VI. 
Nos. 18 and 17 : adult and young.) 
This bird is a very powerful flier, and it is very interesting 
to watch it while in pursuit of its finny prey; poising its body 
for an instant in mid air, it plunges headlong into the sea 
with a velocity that makes the spray rise several feet, entirely 
disappearing under the surface for some seconds, and then 
springing upwards with the buoyancy of a cork, after which 
it rests on the water for several minutes and then takes wing 
again to renew the feat. 
Order TUBINARES. 
Fam. PKOCELLAEIIDiE. 
Genus DIOMEDE A. (Colder parts of both Hemispheres.) 
1. Diomedea exueans, Linn. Wandering Albatros. “ To- 
rea/” (Case V. Nos. 5, 7, and 8; Case XII. No. 9: 
adult, young, and transitional states.) 
This noble Albatros, of which the Collection contains a 
complete series, is very abundant in the seas that encompass 
New Zealand. 
2. Diomedea melanophrys, Boie. Mollymawk. (CaseV. 
No. 6.) 
This is the commonest species of Albatros inhabiting the 
southern seas, and generally follows the coasting vessels to the 
very entrance of the harbours. After boisterous weather it is 
