SANBORN : KANSAS APHIDID.E. 41 



length of joints : I, 0.07 mm. ; II, 0.07 mm. ; III, 0.63 mm. ; 

 IV, 0.36 mm. ; V, 0.34 mm. ; VI, 0.18 mm. ; VII, 0.14 mm. ; 

 total length, 1.80 mm., or about equal in length to the body. 

 Sensoria circular and rather large but indistinct ; about seven 

 to the third joint, not close together, absent on the fourth joint, 

 the usual one near the distal end of the fifth joint, and about 

 four small and one large at the base of the unguis. Eyes 

 red ; ocelli red. Beak concolorous with the head, reaching to 

 the mesocoxse, 0.27 mm. long. 



Prothorax brownish yellow, small in proportion to the head. 

 Thorax brownish yellow. Wings hyaline, veins slender, light 

 brown and curving, each ending in a brownish splotch, cubitus 

 obsolete at the base. Stigma light brown, 0.45 mm. long and 

 0.109 mm. wide; total wing expansion, 0.90 mm. Legs rather 

 long in proportion to the body, tibia slightly hirsute, all con- 

 colorous with the body. 



Abdomen brownish yellow. Honey-tubes as long as wide at 

 the base, being 0.05 ram. long, or half the length of the tarsi. 

 Style knobbed, concolorous with the abdomen, hirsute, and 

 0.128 mm. long, being nearly twice as long as the honey-tubes ; 

 anal lobes prominent. Entire length of the body, 1.72 mm. 



This form was taken in July, on the elm {Ulmiis ameriran<i) . 

 It is somewhat gregarious, but not very noticeable. Mostly 

 found on the ventral side of the leaves. 



Callipterus sp ? Plate VI I, fig. 32. 



Head dark green. Antenntie slightly hirsute ; distal end of 

 the third, fourth, fifth and sixth dark, remainder concoloious 

 or lighter than the head; length of segments: I, 0.09 mm.; 

 11,0.09 mm.; Ill, 0.52 mm.; IV, 0.45 mm.; V, 0.36 mm.; 

 VI, 0.14 mm.; VII, 0.10 mm. ; total length, 1.75 mm. , extend- 

 ing nearly to the base of the honey-tubes. Sensoria circular ; 

 five or six on the third joint, none on the fourth, the usual 

 distal one on the fifth, and a distal one about the same size on 

 the sixth ; the usual group of smaller ones seem to be absent 

 in this case. Eyes black; ocular tubercles prominent; ocelli 

 present but not conspicuous. Beak dusky, 0.45 mm. long, ex- 

 tending to a point midway between the pro- and mesocox;p. 



Prothorax dusky, caudal half with several small tubercles, 

 about twenty ; some of the smaller ones on the lateral sides are 



