A Preliminary List of the Hemiptera of 
San Diego County, California 
By E. P. Van Duzee, Berkeley, Calif. 
The Hemiptera enumerated below with few exceptions were 
taken by me during my residence in that county from December, 
1912, to August, 1914. A few, however, were given me by Mr. W. 
S. Wright and others, and two or three are from localities just out- 
side of the county. The following notes on localities and conditions 
are given for the benefit of those living in the east who are not con- 
versant with the physical conditions found there. 
Coronado and North Island: Low, flat land, lying between the 
bay and the Pacific ocean. 
Ocean Beach, on the northwest side of Point Loma: Collections 
mostly made on or about the low sand dunes. 
San Diego: Mostly in the fields and canyons east of Thirty- 
first street, on the chaparral at an altitude of about 300 feet, or 
along Mission Valley near the San Diego River and on the hillsides 
and in the canyons opening into the valley. 
La Jolla, fourteen miles north of San Diego: Mostly about 
Scripps Institution for Biological Research, near the beach and on 
the hills and pueblo lands near by, with an altitude of from 300 
feet to 800 feet on Mt. Soledad. 
Torrey Pines, six miles north of La Jolla on the sandy hills, al- 
titude about 400 feet, or along the valley of the Soledad River. The 
chaparral collecting here is the best along the coast in this county. 
La Mesa, Lemon Grove and Grossmont, east of the city, at an 
altitude of from 500 to 800 feet. Here Eriogonum prevails in the 
chaparral and the best collecting is among the rocky hills about 
Grossmont. 
Lakeside, on the San Diego River, about 20 miles east of the 
city. Here I worked along the river and on the hillsides north of 
the town. Aititude about 400 feet at the river. 
Foster, two miles northeast of Lakeside and but little higher: 
Work done on the rocky hillsides up to 2000 feet. 
Mussey’s, a pretty oak-covered valley two miles farther north 
on the same creek, with much the same conditions as at Foster’s, 
but better collecting ground: Work here was done in the valley and 
on the rocky hillsides, especially along the canyon to Barona Ranch. 
Alpine, thirty miles east of San Diego, among the hills, alti- 
tude 1850 feet: Here there was good collecting everywhere in the 
little valleys and canyons and on the granite hillsides up to 4000 
Transactions San Diego Society of Natural History 
No.1 Vol. 2 Oct. 1914 
