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



at tip. Dark testaceous to black, vertex with ocelli, spots along 

 margin, one on disc and one inside either eye, whitish. Elytra with 

 basal half of costal margin broadly yellow margined, cross veins 

 from costa and apical margin, white. Veins pale on apical half. 

 Female segment slightly rounded or truncated posteriorly. Length 

 3-3.5 mm. 



The records from New Haven are apparently quite northern for 

 this typical and common southern form where it is abundant in 

 meadows throughout the summer. 



New Haven, 3 Oct., 1902 (B. H. W.) ; 11, 16, 18, 27 July, 1920 

 (B. H. W.) ; 8 July, 1912 (at light) ; North Haven, Sept., 1921 (B. H. W.). 



D. debilis Uhler. D, melsheimeri Osborn and Ball. 



Bull. U. S. Geol. Geog. Surv. Terr., i, 360, 1876. 



Large green species with vertex distinctly angled, as long at 

 middle as width between eyes, yellowish green in color, unmarked. 

 Face slightly infuscated, usually pale. Elytra a uniform green 

 with venation conspicuous. Female segment slightly produced and 

 notched at middle, either side of which is a black mark. Male, 

 plates convexly rounded and very blunt at apex. Length 4-4.5 mm. 



This species is rather widely distributed throughout the northern 

 states usually occurring on grasses in low wooded areas. 

 D. abdominalis (Fabricius). Cercopis ahdominalis Fabricius. 

 Cicada bicolor Fabricius. Cicada halteata Zetterstedt. 

 Aphrodis juvenca Hardy. 



Syst. Rhyng., 98, 1803. 



Resembling debilis but with vertex distinctly broader than long, 

 more bluntly angled and pronotum with very short lateral margins. 

 Greenish, vertex and anterior portion of pronotum yellowish. Face 

 dark or black at base. Elytra greenish, opaque, often black or 

 with black areas, usually subhyaline at apex. Venation as a rule 

 obscured. Female segment slightly excavated, black margined 

 and often incised at middle. Male plates longer than debilis, well 

 rounded at apices. Length 4.5 mm. 



Inhabits low grassy, often swampy areas, and feeds on coarse 

 vegetation in these habitats. It is a common form in the northern 

 states and Canada as well as Europe. 



D. pascuellus (Fallen). Cicada pascuellus Fallen. Cicada punc- 

 tipes Zetterstedt. D. minkii Provancher. (Fig. ii, 6a, b, c.) 



Hemip. Suec, Cicad., 32, 1826. 



Vertex obtusely angled, almost rounded, wider between eyes 

 than median length; yellow, a point either side of apex black. 

 Face infuscated, with numerous pale arcs and a black line at base. 

 Elytra greenish, subhyaline, nervures conspicuous. Female seg- 

 ment gradually, rather deeply excavated, deeply incised at center, 

 lateral angles prominent. Male plates broad at base narrowed to 

 blunt tips. Length 3.5 mm. 



An European form now recognized as a pest of economic impor- 



