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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 63 
Mr. Ridgway’s residence in this locality during the winter has 
been of extreme interest ; it 1s the first time he has had an opportunity 
to make natural history observations since his first trip to this region 
forty-seven years ago. He was thus enabled to compare present 
conditions with those existing on the occasion of his first visit, and 
has secured some valuable information for incorporation in his ex- 
haustive monograph. 
FISHES FROM THE REGION OF QUATERNARY LAKE 
LAHONTAN 
The Museum has received through the Bureau of Fisheries a col- 
lection of fishes from the various river and lake basins that were 
Fic. 32.—A breakfast catch of Tahoe Trout. 
Photograph by Snyder. 
at one time connected with the quaternary Lake Lahontan. Twenty- 
one species are represented, 15 of which are native fishes, including 
not only all that are now known to inhabit the basin, but also 5 that 
are as yet undescribed. The collection was made by John O. Snyder, 
of Stanford University, while engaged in an investigation of the 
region under the direction of the Bureau of Fisheries. 
Lake Lahontan, which in quaternary time was a large body of 
water, very irregular in shape, extended over a considerable part of 
