OBSERVATIONS DURING THE SEASON OF 1910. 47 
College, S. C., conditions were much the same as at Columbia, S. C., 
but quite a noticeable infestation of grasses with Deltocephalus nigri- 
frons as the main element was observed. 
At Decatur, Ga., November 19, grass pastures, including mostly 
Bermuda grass, showed an abundance of Deltocephalus nigrifrons 
with a few D. obtectus Osb. and Ball and Athysanus colonus Uhl., ete., 
both larve and adults, and a few specimens of Phlepsius irroratus. 
Dreculacephala mollipes and Dr. reticulata were common, the former in 
both larval and adult stages, the latter only as adults. The wheat 
examined was only slightly infested, but being inaccessible, bordered 
on one side by woods and on the other by a rather barren roadside, 
small opportunity was present for infestation. 
At Knoxville, Tenn., November 22, the weather being bright and 
warm, jassids were found in abundance and quite active, and the 
infestation of fall barley especially was quite serious. This had been 
planted about the middle of September and had made a strong growth 
and included a large number of jassids, the most abundant species be- 
ing Deltocephalus ngrifrons. Alfalfa fields planted several years were 
also infested extensively with a number of different species and also. 
red clover two years planted, while the younger fields showed much 
less injury. It was noticeable that Drzculacephala reticulata was not 
found in any of the collections here, an indication that its present 
limit of distribution is farther south for this meridian, though farther 
east and on lower levels it goes much farther north. 
OBSERVATIONS DURING THE SEASON OF 1910. 
During February, March, and April, 1910, I made a trip through 
the Southern and southwestern States collecting and studying the 
local conditions at a number of points. 
At Biloxi, Miss., the species occurring in Bermuda grass were 
studied particularly. Here were found an abundance of the yellow- 
headed leafhopper Dreculacephala reticulata, with other species, and 
in some places these occurred in Bermuda grass where no other 
grasses were present. No larve of Dr. reticulata were found, although 
larvee of other species occurred. It was evident therefore, that this 
species must hibernate in the adult stage. 
At Brownsville, Tex., where I spent nearly a week, F ebruary 19 to 25, 
leafhoppers were becoming very active, although the first day or two 
was cloudy and cold, with occasional drizzling rain. Bermuda grass, 
oats, and the native wild grasses of the locality were all quite fully 
infested with different species of leafhoppers and many facts con- 
cerning their hibernation and life history were secured as well as the 
collection of many species not hitherto known from that region. 
Drexculacephala sagitiffera Uhl. was very abundant and apparently 
replaced Dr. reticulata, which I did not collect. 
February 26 and 27 were spent at Corpus Christi, Tex., but high 
winds and cloudy weather interfered somewhat with best results in 
29460°—Bull. 108—12 4 
