July 13-15th 
July 16ht: 
July 17th 
Remained at Ollantaytambo drying and packing specimensSe 
We left Ollantaytambo with the pack at fit. Narcdhsso, 
Tomas, Jose and an Indian boy for the pass leading to 
Occobambo Valley. Started at 10.30 and arrived at-thenear 
simmit where we camped at 4epem. Sent mules back with Luis 
The Valley was dry and without forest the whole way to the 
summite In some places considerable bunck and along 
the stream ié@ a struggling fringe of alders and Escallomina 
trees. The vegetation and birds are Andean and Cugconian 
Our camp was placed well above Timberline or bush growth 
The whole country hue is rolling prairie covered by a heavy 
growth of bunch grass. The elevation by the was 
12,400 ft. The peaks rise about 2,000 to 3,008 ft higher 
but are only covered by new snow and are without glaciers 
A considerable lot of villages occur in the all the valleys 
Potatoes are the only vegetable crop but sheep ,llamas 
and alpacacas are the chief outputs here. At night it is 
very caaa. the side of the streams being lined with ice . 
and inside the tent water freezes solid. 
I set out trap near camp last night and caught many Euneom- 
ys (a small yellow form new to me) one Oxymetenns at dusk. 
and 4 during the day. They are evidently 
a large Rhipidomys rat and a short eared white beliied sep 
species of apodor new to me, as sson, as it go warm I went 
up one of the side valleys viscosha hunting with an Ine 
dian guide and my camp followers. We found two colonies and 
shot four viscachos all told 
5 others. Altogether we saw about 30 of them , they were 
exceedingly tame and one could walk in plain sights with- 
in 60 yds. They spent most of their time sitting on large 
boulders below which were their burrows. They are sociable 
and these colonies had about 15 in each. They were out all 
day; I only saw two feeding on grassy slopes. Saw a pair 
palying about chasing one another. One of the colonies was 
in the rocks at the side of a coral where sheep and llamas 

