26 Thomas Albert Williams 



and some paler markings at the tip. Honey tubes very pale green, longer 

 than broad. Tail dark, short and broad. Entire body hairy but the hairs 

 are thinner and shorter than in most species of this genus. 



Winged viviparous female: General color of a lighter green than the 

 apterous form. Antennae as in that form but darker. Head black. Eyes 

 dark red. Neck green. Prothorax brownish. Thorax dark brown to 

 black. Wings with yellowish insertions and heavy smoky black bands 

 running along all the veins. Stigma short, broad and brown. Hind wings 

 with only faint brown margins to the veins. Front pair of legs dusky, 

 second and third pairs black with base of femora pale. Abdomen green, 

 with an outer marginal row of small brown dots and these followed by a 

 row of larger brown spots, and transverse bands of brown on each seg- 

 ment. Honey tubes pale yellowish green, as long again as broad. Tail 

 short, conical, hairy and dark brown. Length of body 2.55 mm., to tip of 

 wings 3.95 to 4 mm. 



This species is by far the largest I have ever seen, belonging 

 to this genus. In coloration it is similar to Chaitophorus popu- 

 licola Thomas, but differs in many points, besides being a much 

 larger species. Found on leaves of Populus tremuloides, War 

 Bonnet Canyon, June 21, 1890. Named for Professor Lawrence 

 Bruner in recognition of the aid he has rendered in the prepara- 

 tion of this work. 



Cotypes in the collection of the University of Nebraska (no. 

 25) and of the U. S. National Museum (no. 38). 



25. Chaitophorus cordatae n. sp. 



Apterous form: Green, legs and antennae yellowish green, tarsi and tips 

 of antennae dusky. The maturer forms have more or less of dark green 

 spots on the abdomen, which are sometimes arranged in two longitudinal 

 stripes. In a few individuals the dark green spots are replaced by brown 

 ones. The whole insect is covered with long white hairs. 



Winged form: Antennae about one half the body in length; I brownish; 

 II, III and sometimes IV yellowish, remainder brown to black; III equals 

 IV and V, IV and V are subequal, VI is one half V and about one third 

 VII. Head dark brown, front rounded, hairy. Eyes red. Neck greenish 

 yellow. Prothorax dark brown, with curved margins and much narrowed 

 in front. Thorax dark brown with yellowish margins, making it appear 

 as though marked by a broad longitudinal band nearly as broad as the 

 prothorax. Wings with yellowish insertions, slender, with rather con- 

 spicuous brownish veins. Stigma very prominent, dusky, broad. Stigmal 

 vein curved gradually for its entire length. Beak short. Abdomen green- 

 ish, with marginal spots and transverse bands of brown on each segment 



IIO 



