36 
Annual Reports of Academy of 
down the canyon, and crossed Panamint Valley after we had 
safely reached Ballarat on our return trip. The crusted hummocky 
saline mud and areas of the salt-loving plant Salicornia near here 
occupied our attention, and yielded a grasshopper which was known 
to frequent similar saline areas in Death Valley. As we climbed 
the steep grade of the pass into Searles Valley we could see the 
storm which had trailed us, sweeping across Panamint Valley, 
blowing the dust before it in a great sheet-like smoke, and throwing 
it far up on the eastern face of the Argus Range, while over Matur- 
ango Peak another storm raged. Trona seemed quite homelike 
and we spent another day in that vicinity, on the flat and in the 
lower canyons of the Argus Range. From Trona we went to Los 
Angeles, and then to San Diego to start the next section of our 
work. 
Tia Juana, the few houses on the American side of the Mexican 
Boundary, was the major objective the first day of our San Diego- 
Imperial Valley cross-section. The famous, or perhaps better 
infamous, town in Mexico bears the variant name of Tijuana, but it 
is separated from the smaller American community by the gener¬ 
ally dry bed of the Tia Juana River. Good-sized hills, covered 
with a chamise-like bush, several other shrubs and a few cacti and 
yucca, roll off to the eastward. The plant cover of these hills 
yielded one of the best finds of the summer, a katydid of which 
an immature specimen was in our collections, but of which the 
adult was previously unknown; both sexes in the adult condition 
were taken by us at Tia Juana. The dry wash of the Tia Juana 
River, the country about Chulavista and the sand dunes and salt 
marshes near Coronado Beach were also examined. One of the 
scarcest California grasshoppers was taken at Chulavista, and two 
most desirable species, one originally described from that locality, 
were taken in the Coronado environments. 
Heading east from San Diego, we entered a region of good-sized 
hills which passed into true mountains, some very rugged and 
broken. We worked at Jamul and Dulzura, where, at a thousand 
feet above the sea, oaks began to be more in evidence. Steadily 
climbing over low divides, and then dropping down into other 
valleys, we reached the belt of chamise ( Adenostoma ) at Potrero, 
two thousand five hundred feet elevation. Here and at Campo, 
some eight miles to the east, in charming country which reminds 
one somewhat of eastern landscapes, profitable stops were made. 
