latitude 41 degrees, and that the Struthio
Darwinii takes its place in Southern Patagonia; the part about the
Rio Negro being neutral territory. M. A. d'Orbigny, when at the Rio
Negro, made great exertions to procure this bird, but never had the
good fortune to succeed. (5/16. When at the Rio Negro, we heard
much of the indefatigable labours of this naturalist. M. Alcide
d'Orbigny, during the years 1825 to 1833, traversed several large
portions of South America, and has made a collection, and is now
publishing the results on a scale of magnificence, which at once
places himself in the list of American travellers second only to
Humboldt.) Dobrizhoffer long ago was aware of there being two kinds
of ostriches, he says, "You must know, moreover, that Emus differ
in size and habits in different tracts of land; for those that
inhabit the plains of Buenos Ayres and Tucuman are larger, and have
black, white and grey feathers; those near to the Strait of
Magellan are smaller and more beautiful, for their white feathers
are tipped with black at the extremity, and their black ones in
like manner terminate in white." (5/17. "Account of the Abipones"
A.D. 1749 volume 1 English translation page 314.)

A very singular little bird, Tinochorus rumicivorus, is here
common: in its habits and general appearance it nearly equally
partakes of the characters, different as they are, of the quail and
snipe. The Tinochorus is found in the whole of southern South
America, wherever there are sterile plains, or open dry pasture
land. It frequents in pairs or small flocks the most desolate
places, where scarcely another living creature can exist. Upon
being approached they squat close, and then are very difficult to
be distinguished from the ground. When feeding they walk rather
slowly, with their legs wide apart. They dust themselves in roads
and sandy places, and frequent particular spots, where they may be
found day after day: like partridges, they take wing in a flock. In
all these respects, in the muscular gizzard adapted for vegetable
food, in the arched beak and fleshy nostrils, short legs and form
of foot, the Tinochorus has a close affinity with quails. But as
soon as the bird is seen flying, its whole appearance changes; the
long pointed wings, so different from those in the gallinaceous
order, the irregular manner of flight, and plaintive cry uttered at
the moment of rising, recall the idea of a snipe. The sportsmen of
the "Beagle" una