43 
In Los Angeles County, on the 20tb of September of the present 
year, I saw a pair of Devastating Locusts united in coition: tin's was 
the only pair I saw in a five-hours' search in a locality where these 
locusts were quite abundant. I find by reference to my note book that 
on the 1st of October, 1888, I also saw a pair of locusts belonging to a 
closely related, but apparently unnamed species united in coition. 
On page 21 of Insect Life, Vol. iv, Mr. Lawrence Bruner, one of the 
agents of this Division, in referring to the Devastating Locust, says: 
"This species also occurs in two forms, viz, small and large, being the 
spring and fall broods, as nearly as I have been able to decide from 
specimens in collections." This supposition, however, is not borne out 
by the facts, since in the month of August of the present year I col- 
lected both large and small specimens of this species in Sacramento 
County; the smallest specimens measured only 16 millimeters (about 
three- fifths of an inch) from front of head to tip of abdomen, while the 
larger specimens, which were captured in the same locality as the smaller 
ones, measured 25 millimeters (equal to 1 inch) in length. Specimens 
representing both sizes, as well as others of every intermediate grade, 
were submitted to Professor Eiley, who referred all of them to the 
above species, so there can be no doubt of ther proper identification. 
All the facts therefore seem to indicate that the Devastating Locust 
is normally single-brooded, and that the eggs are laid in the fall of the 
year. 
Although I saw both the adults and the young of the Devastating 
Locusts feeding upon the tarweeds in the large field near Burson, re- 
ferred to above, still they had not comixletely devoured these weeds, 
which were still green and growing. Immediately adjoining this field 
on the west was about half an acre of plants of HosacMa glabra that 
had been completely defoliated, j)resumably by these locusts ; I did not 
find any young of the Devastating Locust among these defoliated plants. 
These were the only wild plants I saw that there was reason to believe 
had been completely defoliated by these locusts. 
North of Sacramento I did not again meet with this tar weed; but in 
Yuba, Butte, and Tehama counties it is replaced by a viscid, glandular 
plant, which Mrs. Brandegee identified as Layhi glandulosa. This is a 
low growing, loosely branched annual, which never exceeds a foot in 
height; the leaves are narrow, and the composite flowers are white, 
with a dark yellow center; the entire plant bears numerous short, stiff 
hairs. 
I found this plant growing on the sides of low hills or on the high 
mesa land, and when found in large numbers it was nearly always ac- 
companied by the young as well as by the adults of the Devastating 
Locust; and in the above-named region 1 did not find any of the young 
of this locust except in places where this weed grew. 
One of the most common weeds 1 met with growing in the dry pas- 
ture lands and in the open foothill region in the eastern part of the San 
