152 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Sides of last ventral segment of female produced but not notched 

 or incised, vertex distinctly but slightly produced, green uni- 

 colorous, scarcely more than 4 mm obtusa 



7. Female segment with a broad shallow notch the base of which is a 



broad blunt tooth 8 



Female segment with a broad U-shaped notch without a tooth, a 

 black spot near apex of elytra pergandei 



8. Tooth long, species greenish without dark markings on elytra unicolor 

 Tooth much shorter, elytra striped with orange-red and with black 



spot before cross veins atrolabes 



9. Face and vertex not red 10 



Face and margin of vertex a dark rather bright red coccinea 



10. Elytra greenish or yellowish, not banded 11 



Elytra greenish, slightly smoky with a darker band across center birdii 



11. Pale green, nervures not conspicuous 12 



Darker green, line on pronotum and veins of elytra conspicuously 



pale, tip of elytra smoky alboneura 



12. Face almost as broad as long 13 



Face one-third longer than broad viridescens 



13. Pronotum with six or eight white spots along anterior margin . . .mali 

 Pronotum with three white spots or none on anterior margin flavescens 



E. trifasciata Gillette. (Fig. 14, 10.) 



Proc. U. S. Nat. Mus., xx, 726, 1898. 



Vertex well rounded in front, color green, vertex and pronotum 

 marked with reddish or golden yellow. A broad black band across 

 posterior half of pronotum, another across middle of elytra and a 

 broader one at apex. Length 4 mm. 



A common species but usually found only on cottonwood both 

 as nymph and adult. 



Durham, 27 Aug., 1920 (B. H. W.) ; Norwalk, 8 Sept., 1920 (B. H. W.). 

 On poplar; Portland, 25 June, 1922 (M. P. Z.). 



E. smaragdula (Fallen). Cicada smaragdula Fallen. Eupteryx 

 viridipes Curtis. 



Acta Holm, 37, 1806. 



Vertex slightly produced, color green, a broad black stripe 

 extending from disc of pronotum across scutellum then along 

 elytral suture and terminating in a larger black area at apex. 

 Length 3.5-4 mm. 



Reported from willows and Crataegus, but seems to occur in 

 greater numbers on the former during July and August. 



East Hartford, 16 Sept., 1920 (B. H. W.) ; New Haven, 1, 3 Aug., 3 

 Oct., 1920 (B. H. W.). On willows. 



E. unicolor Gillette. 



Proc. U. S. Nat. Mus., xx, 731, 1898. 



Vertex broadly rounded, color yellow to green, usually with a 

 pale median stripe and a bluish blotch next each eye. Female seg- 

 ment rounded, with an oblique notch either side of a median blunt 

 tooth. Length 3.5 mm. 



In some sections this is a severe pest of apple foliage, and is 

 found in company with E. mali and Empoa rosae. 



Portland, 24 July, 1921 (B. H. W.), on poplar. 



