The Psei.aphid^ of North America. 13 



II. 



Posterior tibiae with a long terminal process, base of the 

 elytra trifoveate. 



B ZEPHYRiNUS, Casey. Red, elytra brighter, or piceous 

 with dark red head and prothorax and red elytra; legs, 

 antennae and palpi, yellowish brown, higiily polished, pubes- 

 cence coarse. Length, 2 mm. Plate X., Fig. 82. Plate 

 XIL, Fig. 141. 



Head as wide as long, eyes prominent, neck slender, feebly 

 carinate; occiput feebly carinate on a line passing through the 

 middle of the eyes; two small, nude, oblong fove«, mutually 

 twice as distant as either from the eyes, are connected by an 

 arcuate sulcus. The frontal margin is depressed between the 

 coarsely punctured supra-antennal tuberculations and continu- 

 ous with the simple clypeus; the vertex inside of the circum- 

 ambient sulcus impunctate and bears a faint punctiform 

 impression in the center at the end of the occipital carina. 

 Antennce longer than the head and prothorax; first joint longer 

 than wide; second smaller; second to eighth obconical; eighth 

 slightly transverse; ninth and tenth gradually wider, the latter 

 (5) obhquely truncate at the tip; eleventh larger, rounded at 

 the base, conical at the tip, obliquely pointed, and with an 

 erect cylindrical tooth at the base. Prothorax widest before 

 the middle, as wide as long, sides arcuate, sinuate behind, con- 

 verging to the base, which is three-fourths as wide as the disk 

 and one-fourth wider than the neck; disk convex, median 

 basal foveas deep, rounded; median sulcus feeble, sometimes 

 reaching to one-third the length from the neck, but occasion- 

 ally hardly perceptible; on each side of the median fovea is a 

 pointed, leaf shaped elevation, limited anteriorly by the 

 arcuate, transverse, sulcus connecting the median with the 

 lateral foveas. In the center of these leaf shaped elevations 

 and near the base each side is a deep puncture; the lateral 

 longitudinal grooves are arcuate outwardly. Elytra in some 

 very feebly and sparsely punctulate, in others smooth, trifoveate 

 at the base; sutural lines parallel at the base; the interval 



