March, igiS-] WoODRUFF : New MeMBRACID. 45 



have been taken, the females outnumbering the males more than two 

 to one. The species is characterized as follows : 



Cyrtologus helena, new species. Plate IV, Figs, i to 5. 



Slender. Pronotum low, coarsely and unevenly punctate, densely on 

 metopidium, progressively more sparsely from humeri to apex ; highest at 

 point over posterior end of humeral sinus, thence arcuate to apex. 



Face very uneven, sparsely and finely punctured, margins of the cheeks 

 sinuate. Clypeus gradually produced and incurved at apex. Tibiae with fine 

 spines. 



Male type. — Characterized generally as above, the dorsal crest gently 

 arcuate from before humeral angles to medial transverse vitta, thence rather 

 abruptly decurved and almost rectilinear to apex, which reaches a point above 

 anterior angle of costal cell of elytra next forward of terminal areole. Face 

 and base of metopidium yellowish green, eyes clouded. Pronotum with 

 anterior vittas light warm brown narrowing unevenly from just above medial 

 lateral margins to carina, where they meet in an acute angle anterior to point 

 above humeri. Medial and apical vittae reaching lateral margins, black for 

 dorsal third, dark brown below, the former vitta throwing a process forward 

 toward anterior vitta two-thirds below dorsal carina. Between these vitt^, 

 and forward of the anterior V, the ground color of the pronotum is creamy 

 white, including the upper part of the metopidium. Elytra clear hyaline, at 

 exteme base narrowly thickened, punctured, and clouded with dark brown ; 

 apical cloud sharply defined, blackish brown, almost covering terminal areole 

 and abruptly narrowing to meet pronotal apex. Nervures brown on apical 

 half, creamy toward base. Beneath and legs creamy white ; claws pinkish, 

 tipped with black. Abdomen black, last joints medially and claspers pale. 

 Length 6 mm. 



Female allotype. — In form and structure like the male, but slightly larger, 

 and the dorsal crest is distinctly higher and more regularly arcuate to the 

 tip, which reaches middle of terminal areole. Face and pronotum pale green, 

 the latter irregularly peppered with whitish. Carina broadly creamy white 

 with central interrupted narrow black line from basal third almost to apex, the 

 black irregularly staining the white beneath it. Broad pinkish spots at 

 anterior margin of metopidium. Beneath pale green, base of abdomen, ovi- 

 positor, and claws pinkish, the latter black at apices. Elytra wholly hyaline. 

 Length 7 mm. 



Male type and female allotype taken by author in coitu on Qucrcus 

 hicolor at Bronxville, Westchester County, New York, June 8, 1913. 

 Type and allotype in author's collection; paratypes in collections of E. 

 P. Van Duzee, W. T. Davis, University of California, Cornell Univer- 

 sity and American Museum of Natural History. 



