178 Ball — Descriptions oj ffeic Tree Hoppers. 



powdered greenish color harmonizes well with the young branches o»o 

 which they were resting. 



Telamona viridla, sp. nov. Plate I, figs. 3, 3a, and 3b. 



Resembling pyramidata in size and form but with less of a hump. 

 Grass green, the male with some fuscous on posterior half of hump and 

 again at apex of pronotum. Length 9 11 mm., $ 9 mm ; width 9 

 5.3 mm. 



Pronotal hump in the shape of an obtuse pyramid one-third the dis- 

 tance back from eye to apex of pronotum, a slight angle on posterior- 

 margin just below apex especially marked in the male. Height of hump- 

 slightly less than one-third the pronotal length. Humeral angles broad,. 

 slightly rounded, a trifle longer than eye. 



Color. — Female, grass green slightly mottled with yellow, carina light 

 except at apex of hump and at tip where it is tawny. Male grass green, 

 carina light interrupted with tawny; a fnscous band runsobliquely back- 

 ward from apex of hump and fades out before reaching the pronotum 

 proper or sometimes connects with a tawny spot on lower margin, whole 

 apex of pronotum tawny. 



Described from eleven specimens from Colorado and Iowa, collected 

 by the author, and one from Illinois. This species occurs on the cotton- 

 wood (Popvlus monilifera), where its green color and rounded form imi- 

 tates the larger terminal buds that form in the fall. The larvae are of a 

 mottled gray and hide in the rough bark. 



Telamona obsoleta, sp. nov. Plate, I figs. 2, and 2a. 



Resembling irrorata but smaller and with a smaller and more round- 

 ing hump. Length 9 10 mm., $ S> mm. ; width 5 mm. 



Dorsal hump low and much inflated; it scarcely narrows from the 

 base to just before the apex where it rounds in to form a carina. An- 

 terior margin rising just back of the humeral angles and extending from 

 there half way to the apex of the pronotum. The height is about equal 

 to the whole length and it rounds down to the pronotum proper at both 

 extremities. Front much elevated above the level of the eyes so that 

 the ocelli are farther from the base of front than from each other. 



Color. — Yellow with the punctures fuscous, sometimes coalescing into 

 brownish fuscous spots giving the whole insect an irrorate and mottled 

 appearance with little regularity of pattern, Usually there is a semicir- 

 cle of lighter shade back of the humeral angles and a light spot on 

 middle of hump. There is a pair of large straggling black marks above 

 and within the eyes, some brown on the inner nervures of corium, and ft 

 umoky brown cloud at apex. 



Described from six specimens collected by the author at Ames, Iowa, 

 and one from Onaga, Kansas (F. F. Crevecoeur). This species occurs on 

 the elm, both larvae and adults being found in the crevices of the bark 



