53 [ Vol. xxxviil. 
Weight average of 16 eggs 3°796 g. (own weights). 
Size :—Intermediate between those of Gadwall, A. strepera, 
and Smew, Mergus albellus. Average measurewents of 21 
eggs, 53°91 x 39°23 mm. (Rey’s). 
Grain of shell, coarse in appearance and touch, similar to 
the eggs of the Smew and Blue-winged Teal, Querquedula 
discors. 
To support his description Mr. Bunyard exhibited mounted 
specimens of down and feathers of all the genus Nyroca, 
with the exception of the Red-crested Pochard, N. rufina ; 
also eggs of the following species, which have the type-eggs 
white to buff :—Velvet Scoter, Goosander, Sheld-drake, Red- 
breasted Merganser, Harlequin Duck, Wigeon, Hooded 
Merganser, Gadwall, White-eyed Pochard, Smew, Buffel- 
headed Duck, Green-winged Teal, Teal, Garganey, and 
Blue-winged Teal. These were arranged in their respective 
sizes and varying shades of colour. 
Mr. Cuartes Cuuss sent the following descriptions of 
new forms of South-American birds :— 
Planesticus fredericki, sp. nov. 
Adult. Allied to P. fumigatus fumigatus, but differs in 
being dark ochreous brown on the top of the head, entire 
back, upper tail-coverts, and outer aspect of wing, instead of 
cinnamon-brown, the inner webs of the flight-quills darker 
and inclining to blackish brown, the tail sooty-brown instead 
of cinnamon-brown, the throat white, the breast and sides 
of the body bright fawn-colour instead of golden brown, and 
the smaller measurements. 
Total length 195 mm., exposed culmen 17, wing 105, 
tail 76, tarsus 30. 
Hab. British Guiana. 
The type, which is in the McConnell collection, was 
collected at Bartica in 1911. 
Planesticus fumigatus abariensis, subsp. nov. 
Adult. Differs from typical P. fumigatus fumigatus from 
