no. 8 SMITHSONIAN EXPLORATIONS, I913 2I 
described from specimens obtained in Canada, and its discovery in 
Montana greatly extends its known geographical and geological 
range. The species was not before represented in the National 
Museum collections. 
Less perfect skeletons of carnivorous and armored dinosaurs, tur- 
tles, crocodiles, and ganoid fishes were also obtained. Altogether the 
material is a most welcome addition to the fossil vertebrate collection 
in the National Museum, which has been deficient in representatives 
of this highly interesting but little known fauna. 
RE ZONE SSN MEE AEP S 
During the summer of 1904, Messrs. G. S. Miller, Jr. and Leonhard 
Stejneger, of the National Museum, visited the Western Alps in an 
endeavor to ascertain the limits of the life zones which, in that part 
of Europe, might correspond to those of North America established 
chiefly through the efforts of the U. S. Biological Survey. That a 
system of such life zones exists in Europe has long been more or 
less vaguely stated by authors, but although a definite correlation was 
established by the gentlemen mentioned, certain points, especially the 
interrelation of the zones corresponding to the so-called Canadian 
and Hudsonian life zones in America, were greatly obscured by the 
long continued interference of man and animals with Nature, such 
as the grazing of cattle in the high Alps, deforestation, and, more 
recently, artificial reforestation. 
It was thought that the eastern Alps might show more primitive 
conditions, and in the spring of 1913, Mr. Stejneger took advantage 
of an opportunity to visit the mountain region between Switzerland 
and the head of the Adriatic, through a small grant from the Smith- 
sonian Institution. Unseasonable and rainy weather interfered greatly 
with the carrying out of his investigation. He arrived in the town 
of Bassano at the foot of the Venetian Alps on April 20, 1913, it 
being his plan to study the life zones of the Val Sugana and the pla- 
teau of the Sette Comuni from that point. This plateau descends ab- 
ruptly to the Venetian plain on the south, while to the east and north it 
is separated from the mass of the Eastern Alps by the Val Sugana, or 
the valley of the river Brenta, and on the west by the lower part of 
the valley of the Adige, or Etsch. It is intersected by the boundary 
line between Italy and Austrian Tirol. 
From April 21 to May 6, he made a series of excursions from 
Bassano, Levico, and Trento as successive headquarters, during 
