28 
Annual Reports of Academy of 
who gave us everywhere a genereous welcome, our thanks are due. 
There is a genuine delight in working among the Colombians; in 
visiting such cities as Popayan; and in journeying through the 
Andean ranges. Needed as are now such expeditions for the sci¬ 
entific exploration of one of the most interesting parts of our earth, 
perhaps they may also serve the human goal of bringing about more 
personal relations between the United States and our Latin- 
American neighbors. 
THROUGH CALIFORNIA TO THE MEXICAN 
BORDERLAND 
By James A. G. Rehn. 
In continuance of the entomological field work conducted jointly 
by Mr. Morgan Hebard and the Academy of Natural Sciences of 
Philadelphia, the purposes and incentive of which were set forth 
in last year’s Annual Report, Mr. Hebard and the writer, during 
the summer of 1922, made a reconnoissance of certain of the moun¬ 
tains of the Great Basin, and of parts of California and Arizona, 
securing about 9000 specimens of Orthoptera, and some hundreds 
of other insects. 
After some preliminary work in Wyoming, supplementing studies 
of previous years, I met my associate at Ogden, Utah, on the 
morning of August 16, and travelled to Wells, Nevada, where 
we had collected in 1919, and with a delightful ranch house in Clover 
Valley as a base, and two horses as means of transportation, we 
began our examination of the Ruby Mountains. These are the 
highest mountains in Nevada, their extreme point being about 
twelve thousand feet above sea-level, their serrated crests and the 
slopes for a thousand or so feet down showing many areas of snow 
at this late date. The exceptionally severe winter of 1921-22 over 
all this portion of the Great Basin and northwest made a very heavy 
snowfall, which was still in evidence in many places. To the west 
of Winchell’s Ranch, in Clover Valley, towered the Ruby Range; 
eastward stretched the vast hayfields of the valley, and beyond, 
purple ridge after ridge, the Pequop and Toano Ranges, with the 
distant summit of Pilot Peak crowning all between, and holding the 
