SANBORN : KANSAS APHIDID.E. 69 



teen on the third, none on the fourth ; the usual distal one on 

 the fifth, which is nicely bordered with over-encircling hairs; 

 one similar to that on the fifth, with a bunch of five or six small 

 ones at the distal end of the sixth. Eyes dark red ; ocular tu- 

 bercles prominent ; frontal ocellus prominent, dorsal ocelli pres- 

 ent but not conspicuous. Beak dark, 0.36 mm. long, extending 

 to the metathorax. 



Thorax all black. Wings subhyaline ; stigma dark, 0.19 mm. 

 broad and 0.90 mm. long. Total wing expansion 6.52 mm. 

 Legs slightly hirsute, the tibia long in proportion to the body. 



Abdomen dark green, with black dorsal markings. Some- 

 times the transverse bars nearest the honey-tubes are confluent, 

 forming a large irregular patch. In addition to these bars on 

 the terga are black spots on the lateral margins of the same. 

 The honey-tubes are black, incrassate, being enlarged on the 

 distal half ; also they have narrow expanded rims ; length, 0.48 

 mm., being a little more than two and one-half times the tarsi 

 in length. Style black, with a few long, spreading hairs and 

 numerous small spines ; the tip is turned dorsad ; length, 0.21 

 mm., or a little less than half the length of the honey-tubes." 

 Total length of the body, 1.99 mm. 



This form was taken October 12, on the cultivated peach. It 

 colonizes the ventral side of the leaf, but has not been very 

 numerous here. 



Myzus prunifolise Fitch. Plate IV, fig. 31. 



Head dark brown. Antennae nearly bare, imbricated ; first 

 two joints concolorous with the head ; basal third of the third 

 nearly white, distal two-thirds dark brown ; basal half of the 

 fourth lighter than the dark brown distal half ; fifth dark 

 brown except a small basal portion ; sixth and basal part of the 

 seventh dark brown, remainder lighter in color. Length of 

 segments: I, 0.09 mm.; II, 0.07 mm.; Ill, 0.27 mm.; IV, 

 0.21 mm. ; V, 0.19 mm. ; VI, 0.09 mm. ; VII, 0.88 mm. ; total 

 length, 1.80 mm., extending a little caudad the body. Sensoria 

 circular ; six or eight on the third joint, none on the fourth, the 

 usual one present on the distal end of the fifth, six small, equal 

 in size and one larger one at the distal end of the sixth. Eyes 

 black ; ocular tubercles present but not prominent ; ocelli not 



