Natural Sciences of Philadelphia 
13 
by a pipe line from some small lakes feci by melting snows of a few 
volcanoes in the Andes, 250 miles distant. 
The whole coast is very unstable, and subject to frequent earth- 
quakes. On several occasions the writer has had to talk on this 
subject, and on this trip he had hoped to experience a good earth- 
quake so that in the future his remarks would contain a little 
personal experience on the subject. But unfortunately, the earth- 
quakes were not functioning when he was there, and this was the 
one regretful part of the trip. 
COLLECTING GRASSHOPPERS IN THE SOUTHERN 
ROCKIES AND THE PLAINS. 
By James A. G. Rehn. 
As long ago as the year 1905, Mr. Morgan Hebard, now a Re- 
search Associate and Councilor of the Academy, and the writer 
conceived the ambitious project of carryingout a field reconnaissance 
of the United States, solely with the object of securing material 
and information for a contemplated monographic study of the 
Orthoptera of that region. The Orthoptera are the order of in- 
sects which embraces the cockroaches, mantids, phasmids or walk- 
ing-stick insects, short-horned grasshoppers, katy-dids or long- 
horned grasshoppers, and the crickets. Since 1907 this work has 
been carried on with considerable regularity and with the most 
satisfactory results. 
To date the field activities have necessitated individual travel 
of over sixty thousand miles in train and automobile, aside from 
saddle, pack-train and foot travel. During portions of the y. ars 
1907, 1908, 1909, 1910, 1911, 1912, 1913, 1915, 1917, 1919 and 1921, 
a total of eighteen months has been spent in the field in this study. 
Financially the support for this work has been almost entirely 
supplied by Mr. Hebard, and very largely through similar assistance 
the preparation of the vast collections secured has been made 
possible. 
The material secured to date comprises over ninety-two thousand 
specimens, all of which will remain in the custody of the Academy, 
in its own collection and as the depository of the Hebard Collection, 
until study work has been completed, and duplicate series dis- 
tributed to other institutions which have assisted by the loan of 
