84 INDEX TO MISSOURI ENTOMOLOGICAL EEPORTS. 



upper ones. A third row above these, and others along the back, but so small that 

 they are generally imperceptible with the naked eye, except on the thoracic segments, 

 being especially distinct on segment '2. Head small, black, sometimes inclining to 

 brown. Cervical shield black, divided longitudinally in the middle by a lighter line. 

 Caudal plate also black. Segment 11, besides the spots above mentioned, has two 

 transverse black marks, the posterior one the largest. Thoracic legs black, the others 

 of the same color as the body. 



Described from 12 specimens. 



Pupa. Average length 0.45. Of form of Plate 2, Fig. 14. Soft, dull yellow, with a 

 lateral dusky line each side of dorsuin, and another, less distinct, each side of venter. 

 Also dusky about the head and wing-sheaths. 



Perfect insect. Length 0.45; alar expanse 0.80. Front wings bifid, the cleft reach- 

 ing not much more than J of wing; tawny yellow, with a distinct dark brown trian- 

 gular spot running from costa to the base of cleft sometimes a little below it its 

 posterior margin with a slight concave curve. Three dusky, diffuse longitudinal 

 spots, one placed on the basal third of the wing at costa and frequently reaching along 

 the costa to the triangular spot ; one near the interior margin, a little nearer to the 

 base of wing than the last, and one on the outer third of the interior margin. Two 

 light-colored transverse lines across the end of wing, one very near and parallel 

 with posterior margin, the other bordering the triangular spot behind, and curving 

 across the lower lobe towards posterior angle. The space between these two light 

 lines usually darker than the ground-color. Fringes dark with a light margin. Hind 

 wings trifid, the upper cleft reaching a little beyond the middle, the lower one to the 

 base of wing. Color ashy-brown, the lower lobe produced into a dark angular spot 

 about their middle posteriorly. Antenna?, palpi, head, thorax, and body, tawny yel- 

 low; legs of the same color with the exception of the tarsi, which are almost white, 

 with alternate dark brown spots, the spines being black, with dusky tips. [First 

 Kept., pp. 180-181. Fig. 98, and PI. II, Figs. 13, 14. 



Zelier has since (1872) referred it to the genus Platyptilia (Beitr. ztir 

 Kenntn. N. A. Nachtfalter, 2nd part, p. 118), and indicates the difference 

 between it and a very closely allied European species, P. Zetterstedtii. 

 He very properly, because of the incongruous compound, drops the con- 

 ventional ending dactyliis which I used in the original description. 



HETEROPTERA. 



NYSIUS DESTRUCTOR, N. Sp. General color grayish-brown ; of shape of N. tlitjmi 

 Wolff. Head either minutely or more coarsely punctate, and more or less distinctly 

 pubescent; the surface usually brown, with a distinct black, longitudinal line each 

 side, broadening on the crown, but generally leaving the orbit of the eyes pale; these 

 lines sometimes more diffuse and occupying the whole surface, except a median brown 

 spot at base of crown, and a narrow, paler spot on the clypeus; ocelli piceous; eyes 

 opaque, either black or slate-color; face sometimes uniformly pubescent and appear- 

 ing dark grayish-brown; but more generally black each side of rostrum, with a dis- 

 tinct yellowish-brown spot on the checks below the eyes ; rostrum piceous, paler at base 

 a.ud reaching to hind coxte ; antenna: either pale yellowish-bro>vn or darker brown, 

 the torulus and first joint darkest. Thorax, pronotum narrowing anteriorly, the sides 

 slightly sinuate, irregularly and more coarsely punctate than the head, more or less 

 pubescent, dingy yellow or blown, with a transverse black band near the anterior 

 edge, obscuring the incision and leaving the edge pale, especially in the middle, where 

 there is often a conspicuous pale spot; also five more or less distinct longitudinal 

 dark lines, the central one most persistent and leading on the posterior margin to a 

 pale, shiny, impunctate spot ; the callus at hind angles, and sometimes an intermedi- 

 ate ripot between it and the median one, and the entire posterior margin, also pale and 

 impunctate; scutellum dark, coarsely punctate, sometimes with a smooth median Ion- 



