No. 34-] HEMIPTERA OF CONNECTICUT I CERCOPIDAE. 221 



one, forked, the intramarginal vein interrupted between the third 

 and fourth sectors ; dorsal surface clothed with a dense, prostrate, 

 grayish-golden pubescence, obscuring the venation of the elytra; 

 in female, last ventral segment reduced to two narrow plates 

 lateral to median line. 



The members of this genus, while displaying a marked uni- 

 formity in their globose forms, dense pubescence, and coloration 

 of varying grays and browns, the elytra obliquely marked with 

 fuscous, present, however, extreme variability in size (4.5- 

 9.5 mm.), ranging from that of a Clastoptera up to that of an 

 Aphrophora. 



Key to Species. 



1. Broader, more convex ; color grayish-brown, or testaceous, fuscous 



markings on elytra indistinct or absent, vertex narrowly angulate, 



margins straight 2 



Narrower, more elongate ; color dusky-gray to deep tawny-brown, 

 a distinct fuscous V on each elytron; vertex broadly angulate, 

 margins convexly rounding to apex quadrangularis 



2. Size large, 6.5mm. or more; globose; light grayish-brown, elytra 



indistinctly marked with fuscous gibbosa 



Size small, not exceeding 5.5 mm. ; narrow ; testaceous, apex of 

 elytra broadly subhyaline angulif era 



L. quadrangularis (Say). (PL iv, 31.) (Fig. 20, 33-36.) 



Cercopis quadrangularis Say. Jour. Acad. Nat. Sci. Phila., vi, 305, 1825. 



Color dusky-gray to deep tawny-brown, spot at base, spot at 

 apex, and a V on the center of each elytron, fuscous ; elongate, 

 the costal margins narrowly expanded. Length 6-8.5 mm. ; width 

 3-3.5 mm. 



Vertex, length slightly greater than that of pronotum, apex 

 bluntly rounding; tylus distinctly slightly depressed, almost 

 parallel-margined, length nearly equal to one-half that of vertex ; 

 ocelli slightly nearer pronotum than to tylus, slightly nearer each 

 other than to eyes ; pronotum, length one-half width ; elytra twice 

 longer than wide, the costal margins narrowly expanded. 



Genitalia : Female pygof ers, length equal to width, outer margins 

 broadly rounded, exceeded by ovipositor by almost one-half their 

 length. Male plates broad at base, equal to last ventral segment 

 in width, length twice width, inner margins attingent, outer 

 margins cut off obliquely at end of basal third, thence rounding 

 to apex, the dorsal appearance that of a V-shaped trough. 



Color : Dusky-gray varying to deep tawny-brown ; spots at base 

 and apex, and a V on the center of each elytron, formed by the 

 union of an oblique band from the scutellum to a point beyond 

 middle of costa with another from the point of the clavus, fuscous 



Distribution: Specimens have been examined from the New 

 England .States, New York, Maryland, District of Columbia, North 

 Carolina, Tennessee, Mississippi, Ohio, Ontario (Can.), Wiscon- 

 sin, Minnesota, Iowa, Colorado, Nebraska, Indian Territory, and 



