114 Journal New York Entomological Society. [Voi. x 



JFhiii'/ess 7'ivipara. 



Whole body yellowish ; two dorso-lateral longitudinal rows of impressed dusky 

 spots or short transverse lines, arranged segmentally in pairs, the first pair on the pro- 

 thorax, the last pair on the sixth abdominal segment ; otherwise without maculations. 

 Antenna without sensoria except the usual ones on V and VI, the third joint distinctly 

 or slightly swollen on anterior aspect near the base, the entire appendage pale yellowish 

 except the dusky sixth joint (including filament) ; eyes dark red ; beak passes ante- 

 rior margin of mesothorax, but does not attain mesocoxa; ; protJiorax with lateral 

 margin angulate (Fig. I ) ; legs pale yellowish, only the tarsi dusky ; cornicles usually 

 with the apex brownish. Elsewhere as in winged vivipara. 



Measurements : Length of body (less cauda) 1. 965 mm. ( 1. 783-2. 175) ; greatest 

 width of abdomen (3d segment) .983 (.870-1.044); antennae (Ill-filament in- 

 clusive) 1.05; III .513 (.430-.601); IV. 152 (.138-.172); V.146 (.138-.170); 

 VI (scape) .III (.103-. 120); filament .129 (.120-.138); cornicle .0S6 ; cauda .268 

 (.223-.310). 



Walker gives color of this form as follows: green, "covered with 

 a white bloom," all appendages including cornicles and cauda whitish, 

 eyes dark brown. Buckton describes it as yellowish green with the 

 cauda yellow. Koch describes the whole body as whitish yellow to 

 greenish ; all appendages very pale yellowish. He figures this form 

 with ten brownish transverse bars above beginning with the prothorax, 

 one for each segment to the seventh abdominal inclusive. 



IVingUss I'ivipara, rose. May 23. 



Head yellowish green or whitish green; antennie I-II concolorous, elsewhere 

 whitish or whitish yellow except the greenish articulations between joints III-IV, IV- 

 V, and the dusky or blackish filament, or distal half of scape of VI and filament; eyes 

 black (even when dampened with alcohol, which ordinarily makes the " black " eyes 

 of plant lice appear dark red) ; beak whitish, apical joint brownish ; legs whitish or 

 greenish white, tips of tibice brownish, tarsi dusky; prothorax not angulate; thorax 

 and abdomen yellowish green, generally very lightly pulverulent ; two longitudinal 

 dorso-lateral rows of deep green marks or spots, one pair on each segment between 

 the sutures beginning with the prothorax and ending with the 6th abdominal segment, 

 those on the abdomen take the form of transverse bars which are usually not conflu- 

 ent on the meson, but sometimes extend clear across ; cornicles pale greenish with 

 brownish apical ring ; cauda light yellowish. Ventral aspect green, unicolorous, 

 distinctly pulverulent. Elsewhere as in the first described wingless vivipara. 



Measurements: Length of body (less cauda) 1.914 mm. (l. 74-2. 088); greatest 

 width of abdomen (2d and 3d segments) 1.087 (•957-^-2i8) ; antennae (Ill-fiU- 

 ment inclusive) 1.186, III .579 (.533-.637) ; IV . 180 (.1S5-.206) ; V.i72(.i55- 

 .189); VI (scape) .123 (.120-. 128); filament. 132 (.120-.138); cornicle .091 

 (.086-. 102) ; cauda .310 ( .292-327 ). 



From 15 living specimens. 



It will be seen from the above that the spring forms have broader 

 abdomens and longer antennae, cornicles and cauda than those on 

 columbine in the fall. 



