Pomona College Jour.NAL of Entomology 743 



and the other near tlie apical end. Ilostrum — Reaches to the second coxae, light- 

 green with dusky tip. I'rothoraj' — Without lateral tulxTcle, wide and short, 

 hairy, dark green with ligliter green transverse strip at apical border, ventral 

 surface dusky green. Mcsolliorax — Dark green with muscle lobes black, or 

 nearly so, vj'ntral surface very dark with green area connecting the coxae. Meta- 

 thorax — Dark green witli muscle lobes nearly black. Abdomen — Well rounded 

 and flat, covered with long spines, light green with dark dorsal markings — there 

 are three large distinct green areas, one on the middle dorsum at the base and 

 one surrounding each cornicle, with lesser areas as shown in the drawing. Ventral 

 surface light green. Anal plate well rounded or slightly depressed near the 

 middle, dusky or light green. Cornicles — (Figure 238, 3). Short, base much 

 wider than the mouth, gradually narrowing from base to the tip and smallest at 

 mouth, which is not flared, covered with fine network of lines, basal half dusky, 

 apical half green to yellowish, length 0.065 mm. ; width at base 0.075 mm., width 

 at mouth O.Oi mm. Legs — Short, stout, hairy, light, with coxae dusky green, 

 femora dark amber brown, tibiae liglit amber with dark bases and tips, tarsi dark 

 brown. JCings — Rather long for so small an insect, narrow, hyaline, venation 

 variable, but usually of the normal "Chaitophorus" type. Primary — (Figure 239, 

 1 to 11). Length 1.75 mm., width 0.0)3 mm. Costal vein wide to stigma, light 

 amber to yellow; subcostal twice as wide as costal and of same color; first dis- 

 coidal arises near the middle of the subcostal and is usually straight though in 

 many cases it curves with the convex surface towards the tip of the wing (in 

 one case this is reversed — right wing of pair 3) ; second and third discoidals with 

 a tendency to unite at their bases (Figure 239, 6, 7, 10 and 11), though normally 

 they are separated. Second discoidal curved or straight — when curved, with 

 the convex surface towards wing tip, the base usually midway between the bases 

 of the first and third discoidals, but a little nearer the latter, tip may show a 

 tendency to fork as shown in 2, 5, 6 in Figure 239. In one instance (Figure 

 239, 2) there is a strange figure connecting the first and second discoidals; third 

 discoidal very abnormal and variable as shown in the drawings. It may be once, 

 twice or thrice forked. In the normal vein (if there be such) the first fork is 

 just inside the middle and the second fork near tlie middle of the second branch. 

 In not a few wings there are faint but distinct clouded borders along the stigmal 

 and discoidal veins, darkest along first discoidal. Stigma short, oblong with 

 blunt tip, margin of the wing is depressed or set in at the apex of the stigma, 

 color dusky with basal margin lighter and hairy. Stigmal vein arising just 

 beyond the middle of the stigma, mostly curved throughout the first half, slightly 

 undulate, long, apical half nearly parallel with the upper branch of the second 

 fork of the third discoidal. Tips of the veins often clouded. Hecondary — Length 

 I.l mm., width 0.31 mm., normally with two discoidals, though out of some fifty 

 mounted specimens two wings were found without either discoidal, and five wings 

 were found with only one discoidal and that the first one. Subcostal is always 

 present and curved downward under the booklets, reaches to tip of wing which 

 has a dusky spot at its apex. First discoidal arising from the subcostal just 

 inside its middle, straight, short, does not reach to the wing margin. Second 



