88 Psyche [August. 
FF. Narrow lateral expansion of the pronotum sharply 
demarked and most commonly pale; not widened 
between the two lobes which are poorly differentiated 
from each other, merely posteriorly lightly depressed 
and sparsely punctate; pronotum transverse, the two 
sides subparallel. Head submerged to eyes; width of 
head across eyes much narrower than across anterior 
submargin of pronotum where the angles are rather 
abruptly rounded. Antenne more slender. Poste- 
rior tibia with long rigid bristles. Basal segment of 
posterior tarsus a little longer than second and third 
together. Fore femora with several small subapical 
tubercles. Brachypterous and macropterous forms. 
(To include Trapezus Dist.).......... Cryphula Stal. 
ANOTHER TOXOPTERA FEEDING ON SEDGE (HOMOP- 
TERA; APHIDID/®). 
By A. C. Baker, 
Washington, D. C. 
During the summer of 1916, there appeared on the sedges in a 
little marsh at East Falls Church, some dark colored apterous 
aphids. These were kept under observation and some were trans- 
ferred to rearing cages. From these, sexes and eggs were obtained 
in the fall. None of the eggs, however, hatched the following 
spring. Visits to the marsh were made too late to secure a supply 
of stem mothers. Apterous forms were secured in the second 
generation and from these alate forms were secured. In the key 
given by Davis! this species would fall under awrantii from its color 
and would be excluded from scirpi by the nature of the hairs present. 
in that species. It is therefore recorded under a new name. 
Toxoptera nigra sp. nov. 
Alate vivipara. 
The alate forms began to appear in the rearing cages in the third 
generation. It is quite possible, however, that lines from a suffi- 
cient number of stem mothers would show alate forms produced in 
1 Tech. Ser. No. 25, Pt. I, p. 8, U. S. D. A. Bur. Ent. 
