SANBORN : KANSAS APHIDID.E. 77 



five or six small, with one large one, at the distal end of the 

 sixth. Eyes dark red ; ocular tubercles conspicuous ; ocelli 

 present but not conspicuous. Beak dark at the distal end, 

 lighter proximally ; length, 0.54 mm,, extending a little beyond 

 the metathorax. 



Thorax dark, with yellowish membranes. Wings hyaline, 

 venation dark, frail, and normal. Stigma dark, 0.19 mm. 

 broad; 0.99 mm. long. Total wing expansion, 8.33 mm. Tarsi, 

 distal ends of the tibia and femora dark, remainder brownish 

 yellow. All hirsute. 



Abdomen bluish green, with about five transverse bars 

 of black. Honey-tubes cylindrical, slightly dilated at the 

 distal ends, concolorous with the abdomen, except the distal 

 ends, which are dark ; length, 0.54 mm., three times the length 

 of the tarsum, and extending a little distad the style. Latter 

 black, armed with long, spreading hairs and numerous small 

 spines, 0,23 mm. long, 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 25, on sycamore [Platanus orci- 

 dentalis) . It seems to be sporadic in habit, as only a few were 

 taken, on the ventral side of the leaves. It may not be a typical 

 representative of any species. 



Macrosiphum squarrosa, n. sp. Plate XVI, fig. 84. 



Head brownish black. Antennae black, except the first, sec- 

 ond and base of the third joints, which are brownish ; length 

 of segments : I, 0.18 mm. ; II, 0.09 mm. ; III, 0.75 mm. ; IV, 

 0.79 mm. ; V, 0.72 mm. ; VI, 0.18 mm. ; VII, 1.37 mm. ; total 

 length, 4.12 mm. The first five joints are about equal to the 

 length of the body. Sensoria numerous, circular, and unequal 

 in size. They are not easily detected until cleared. The ap- 

 proximate number is not shown in the illustration, but there 

 are generally about thirty to fifty on the third joint, and on the 

 fourth, twelve to fifteen ; on the fifth, fifteen to twenty ; and on 

 the distal end of the sixth about six small and one large one. 

 Eyes black ; ocular tubercles prominent ; ocelli present. Beak 

 black, 0.90 mm. long, and extends a little caudad the thorax. 



Thorax all black. Wings hyaline, veins black, bordered with 

 a very faint smoky tinge. Stigma brownish black, bordered 

 caudad with a dark band which extends to the base of the sub- 



