1919] Sanders and DeLong: Eight New " Jassids'' 233 



Genitalia: Female last ventral segment strongly and evenly pro- 

 duced to a blunt angle. Male valve large, half as large as plates, 

 strongly produced to a blunt angle. Plates evenly narrowed to blunt 

 tips. 



Described from four females and one male swept from 

 Vacciniiim sp. on the mountain at Penfield, Clearfield Co., 

 Pa., August 24, 1918, by the senior author. Type and para- 

 type in authors' collections. 



Deltocephalus delector n. sp. 



Plate XIII. Figs. 8, 9, 10. 



Similar in form and general appearance to bilineatus and niarginatus, 

 but much smaller, really a minute species with distinct markings. 

 Length, male, 3 mm. 



Head well produced, with apex distinctly pointed, as long as pro- 

 notum, about one-fourth longer on middle than width between the eyes. 

 Pronotum about twice as wide as long, strongly arcuate in front, lateral 

 margins very short, rounded. Elytra with clavus not reticulate and 

 with middle anteapical cell strongly constricted at middle. 



Color: Vertex creamy white, with two broad tawny bands extending 

 from base to apex, where they converge and form two black triangular 

 spots either side of white tip, and extend over margin. Behind these 

 in each band a "v" shaped black spot inclined inwardly. A narrow 

 black curved line extends from eye around ocellus on margin toward 

 apex. Median white band distinctly narrowed to apex. Pronotum 

 white, with four longitudinal tawny bands, one behind either eye, and 

 the central two are extensions of the bands on vertex, continuing across 

 scutellum. Elytra tawny with costal, sutural and apical margins and 

 veins, white. A spot in distal portion of inner apical cell, the costal 

 veinlets of the apical and anteapical cells, and a curved band on inner 

 border of the apical white margin, black. Face pale, a spot on the outer 

 margin of lorse, one above antenna, and inner line of antennal pit, 

 brown. Beneath pale yellow, male plates with inner apical third black, 

 but white margined. 



Genitalia: Male valve short and broad, with nearly truncate apex. 

 Plates three times length of valve, gradually sloping to broad truncated 

 apices, the outer margins set with coarse spines. 



Described from one male specimen swept from grasses by the 

 senior author on the top of mountain between Port Matilda 

 and Phillipsburg, Pa., August 23, 1918. A second specimen 

 was taken, but escaped. 



This species is very distinct from others of the bilineatus 

 group, on account of its minute size and markings. 



