IOWA ACADEMY OF SCIENCES. 
155 
Other new species found are as follows: 
PSYLLA NEGUNDINIS, Sp. nov. 
Found on box elder. 
Description of the adult . — General color light green, sometimes 
tinged with yellow. Head, including the eyes, much wider 
than length of vertex; median line distinct; posterior margin 
concave, the part on either side of median line almost straight, 
meeting at an obtuse angle; lobes of vertex distinct, roundish, 
tips quite widely separated and between them is placed the 
anterior, bright yellow ocellus. Discoidal impressions large, 
deep, varying in shape, not distinctly limited. Near posterior 
end of median line there is usually a sharp constriction joining 
the impressions. Posterior ocelli are bright yellow, very prom- 
inent, located on roundish tubercles between discoidal impres- 
sions and inner angle of the eyes, and present a rather striking 
bead like appearance. Eyes very prominent, large, almost 
semiglobose, brownish, moderately granulated, inner angle dis- 
tinct, roundish. Portion of head bearing the eyes very promi- 
nent, marked off from the rest of the head by a distinct constric- 
tion, thus bringing the eyes into greater prominence. Frontal 
cones large, color bluish-green (sometimes light green), 
visible from above, strongly diverging, equal in length to the 
vertex, furnished with numerous bristle- like hairs, slight con- 
striction at middle, tips rounded. Antennae light yellow, loca- 
ted centrally on either side between the anterior margin of the 
vertex, the eyes and the base of the frontal cones. First 
joint roundish, placed in a cup-like cavity with a sharply 
defined edge. Second joint about half as large as the first. 
The succeeding joints filiform, the last one slightly enlarged, 
black, terminal bristles nearly equal. Third joint the longest, 
the five succeeding ones nearly equal, the ninth and tenth 
shorter, being very little longer than the second. Tip of ninth 
slightly enlarged and sometimes darkened. 
Pronotum small, of equal width througout, two distinct lat- 
eral impressions on either side with a small ridge- like portion 
between them. In a fresh specimen we can usually distinguish 
four whitish spots as follows: Two comparatively large, 
roundish, dorsal ones separated by a faint median line of yel- 
low, and a smaller one on either side about half way down to 
the lateral impressions. 
