160 
IOWA ACADEMY OF SCIENCES. 
sixth and eighth; ninth and tenth black, and end with two equal 
terminal bristles. Eyes prominent, brownish, the margins 
somewhat lighter colored; ocelli reddish, placed as usual. 
Mouth-parts not clearly visible, the last joint black. Legs 
light green or yellowish, first and second tarsi brown or black, 
the third tarsi lighter; anterior tibia with a brown tinge, which 
is less distinct on the second, and usually hardly visible on the 
third. Posterior tibia and first tarsal joint have distinct black 
spines on the distal end; on first and second pair these spines 
are of same color as the legs, and therefore quite invisible. 
Terminal claws and adhesive disk well developed. Pronotum 
short, with three distinct lateral impressions, and a fourth some- 
times indicated. Mesothorax moderately developed, marked as 
stated above. Wings transparent, project to one-third their 
length beyond tip of abdomen, veins whitish, petiolus cubitil 
half as long as discoidal portion of subcosta; radius straight, 
except a slight curve near distal end, almost parallel with 
stigmal portion of the costa. First cubitus straight, or but 
slightly curved toward clavus; second cubitus distinctly curved 
toward radius, and about three times as long as preceding. First 
furcal curved toward second, about one-third as long, and meets 
anal margin at only a slight angle. Second furcal strongly 
curved toward the third, and meets anal margin quite obliquely. 
Third furcal shorter than the second, almost straight, but in 
some cases showing a slight double curve. Fourth furcal 
slightly curved toward radius. First marginal cell wider than 
the second, but not so long as measured by first and third fur- 
cals. Cubital cell long and narrow; discoidal cell still longer 
and sides nearly parallel, being widest at furcation of second 
cubitus; radial cell narrow. Pterostigma distinct. Claval 
suture joins anal margin at union of first furcal. Anal cell dis- 
tinct. Metasternal processes distinct, diverging, blue-green. 
First visible ventral abdominal segment longer and more 
strongly developed than usual, blue-green in the center; remain- 
ing abdominal segments smaller, light green. Ovipositor of 
female of medium size, furnished with numerous long hairs;: 
dorsal and ventral plates pointed as usual; points of inner divis- 
ion of egg- sheath project beyond tips of the outer plates, are 
chitinous, slightly enlarged, arrow shaped, sharp at tips. Outer 
division of egg- sheath prominent, the tips standing out hori- 
zontally as lateral projections. 
