150 MISCELLANEOUS PAPERS. 



stages, but not transparent, while the constriction of the third seg- 

 ment is more distinct, and there is a sensorium at the apical end of the 

 third segment. Fore part of head darker than body color. Legs 

 paler than body color, except parts of the femur and tarsus, which are 

 darker ; the tip of the abdomen also is darker. Cornicles longer and 

 more distinct than before first molt. Measurements : Length of body, 

 0.927 mm. ; width, 0.363 mm. ; antenna?, 0.325 mm. 



After second molt and 48-72 hours old. — General color chromium- 

 green, the sides being slightly darker. Head and first thoracic seg- 

 ment bottle-green. Eyes dark red. Antenna? pale green, with black 

 tips. "VAliat was spoken of in the earlier stages as the third segment 

 is now divided into two distinct segments; otherwise, except as to 

 size, the antennae are the same as in the earlier stages. Tips of legs 

 black. Tip of abdomen dark chromium-green. The black cornicles 

 are surrounded at their bases by dark green patches. Measurements : 

 Length of body, 1.090 mm. : width, 0.454 mm. ; antennse, 0.342 mm. 



After third molt and 96-120 hovrs old. — General color chromium- 

 green. Head and first thoracic segment darker green. Eyes dark 

 red. First and last segments of the antennae black. As yet only 5 

 distinct segments, or 6 if the filament be counted. Tarsi black; 

 femora of the posterior pairs of legs partly black. Tip of abdomen 

 dark green; penultimate segment w^ith a stripe of dark green nearly 

 covering the entire segment. Cornicles black, with dark-green basal 

 spots. Measurements : Length of body, 1.254 mm. ; width, 0.527 mm. ; 

 antenna^, I, 0.044 mm. ; II, 0.037 mm. ; III, 0.132 mm. ; IV, O.OGl mm. ; 

 V, basal, 0.057 mm. ; filament, 0.117 mm. ; total, 0.448 mm. 



Adult umigless female. — Head black. Antenna' black, excepting 

 third segment. Eyes very dark reddish brown. Beak dark, its apex 

 black, shading to brown. General color of body blue-green. Fore 

 segments and tip of abdomen very dark green. Legs black, excepting 

 middle portion of femur. Cornicles black, slightly incrassate at the 

 base and with a dark-green basal patch. The adult gradualW be- 

 comes darker in color as it grows older, and when it has about finished 

 Vvdth the j)roduction of young it is almost black in color, having a 

 slightl}^ greenish and brownish tint. Measurements (from alcoholic 

 specimens collected on broom corn at Mattoon, 111., 3\x\y 0, 190C) : 

 Length of body, 2.363 mm. ; width, 1.091 mm. ; antennae, I, 0.067 mm. ; 

 II, 0.054 mm.; Ill, 0.193 mm.; IV, 0.115 mm.; V, 0.111 mm.; VI, 

 basal, 0.077 mm.; filament, 0.176 mm.; total, 0.793 mm.; cornicles, 

 0.203 mm. ; style, 0.101 mm. The specimens reared in the insectary 

 were somewhat smaller than the above. 



Adidt winged female. — Head black. Antennae black, and with 6 

 segments, or 7 if the filament be counted. Antennal sensoria cir- 

 cular, 16 to 20 on III, 4 on IV, several at apical eud of V. and 

 also at apical end of the basal part of VI. Eyes dark brown or 



