400 
New Species of 
coverts greyish black tipped with white; irides brownish huff, 
brown predominating near the pupil; eyelash pale olive-yellow; 
bill straw-white, with olive and black culmen; legs and feet 
straw-yellow. 
Total length, 40 inches; bill, 4; wing, 25; tail, 10; tarsi, 7|. 
Hub. Plains of the interior of Australia generally. 
Anas nasvosa. Anas intensh fusca , plumis albo irroratis 
et longitiidinaliter notatis . 
The whole of the plumage dark brown, minutely freckled and 
spotted with irregular oblong marks of white in the direction of 
the feathers ; the under surface the same, but lighter and tinged 
with buff; wings without a speculum ; primaries plain brown; 
irides light brown; bill greenish grey, becoming much darker 
at the tip; legs bluish green. 
Total length, 17 inches ; bill, 2£; wing, 9; tail, 3; tarsi, 2. 
IIdb. Western Australia. 
The above is the description and measurements of a female. 
Sula Australis. Sul a primaries alarum et sccondariis 
necnon rectricibus can dec duabus intermediis fuliginoso - 
fuscis; tarsis antich digitisque viridiflams. 
Crown of the head and back of the neck beautiful buff; the 
remainder of the plumage white, with the exception of the 
primaries, secondaries, and four centre tail-feathers, which are 
fuliginous brown with white shafts; irides olive white; bill 
brownish horn-colour slightly tinged with blue; space round 
the eye leaden blue; bare skin at the base of the beak and down 
the centre of the throat nearly black; front of the tarsi and 
toes sickly greenish yellow; webs brown. 
Total length, 32 inches; bill, 5i; wing, 19; tail, 10; tarsi, 2. 
1lab. The Tasmanian Seas. 
The specimen exhibited is from the River Derwent. Like 
the other members of its family, this species will allow of its 
being taken with the hand. Some of my specimens were so 
taken on a rock on the Act aeon Islands. 
The circumstance of being enabled to bring an entirely new 
Albatross before the notice of the Society is a source of great 
gratification to me, since the group to which it belongs had 
already been paid much attention to by our early voyagers 
and later naturalists. The present bird differs from all the other 
species in the extreme caution with which it avoids rather than 
approaches the neighbourhood of vessels at sea. It is rather 
abundant in Bass's Straits and in all the Tasmanian seas. 
From its shyness, I propose to name this species 
Diomedea cauta. Diom. vertice albo; faciei colore e 
margaritd cinerco; dorso x albs cauddque dnereo fuscis; 
rostra pollute vinacco-cinereo; culmine , ad basin prcesertivi , 
Jlavo. 
Crown of the head, back of the neck, throat, all the under 
