EMPOASCA MALI LE BAEON". 101 
two whitish lines or stripes on the meso thorax which unite near the 
center by a transverse band, forming the letter U H." A small tri- 
angular white spot occurs on the scutellum with a small dot on either 
side. The eyes are brilliant white when the insect is alive, but turn 
to a dull brown in dried specimens. 
The species, according to recent studies, appears to have three or 
four generations each year, and to pass the winter either in the adult 
or egg stage, a diversity of habit and life cycle which would seem to 
indicate its derivation from some other geographical region, or an 
adaptation to varied food plants furnishing it supplies of nutrition 
throughout the year. Such a diversity renders it more difficult to 
apply direct measures of control. Upon soy beans it occurs in the 
nymphal form during August and early September, and mature indi- 
viduals are abundant in September and October which may deposit 
eggs, or very likely secrete themselves for hibernation during the 
following winter. A number of recent records show its occurrence 
on alfalfa and cowpeas, and in some instances I have noticed con- 
siderable injury to these crops as the evident result of its occurrence. 
There are a number of reports of its injuries to forage crops and a 
few of these may be cited as example of the character of its work. 
At Clemson College, S. C, July 15, 1908, Mr. G. G. Ainslie reported 
that at the experiment station he found a lot of soy beans affected 
with a green leaf hopper. He says: "They were present in great 
numbers in all stages, and many of the leaves were corrugated and 
curled by them. The lower leaves are yellowish. When the beans 
are disturbed, the hoppers fly out in clouds." The specimens col- 
lected and preserved in alcohol were identified as this species. 
At Lexington, Ky., Prof. Garman records extensive injury to 
alfalfa, and notes a variety of food plants and that the insects mi- 
grate during the season, seeking fresh growth and succulent plants. 
He says that there are several generations. It occurs on clover and 
alfalfa in June and July and again in September. It is also destruc- 
tive to cowpeas, and another record gives it as occurring on red clover. 
At Lafayette, Ind., I found it common on soy beans and alfalfa 
October 5, and Mr. Phillips informed me that it was common and 
abundant on soy beans earlier in the season, and he attributed injury 
to the crop to its presence. As most of the varieties of the soy beans 
had ripened at the time of my visit I saw the insects on only one 
variety of soy bean but found them as both nymphs and adults, which 
would show that they develop on this plant. On alfalfa they were 
much more plentiful and included nymphs of different stages as well 
as adults. More recently, during the summer of 1911, Prof. Webster 
reported to me a serious infestation on the farm of Dr. H. W. Wiley, 
near Bluemont, Va., where the plants were entirely destroyed above 
ground. 
