116 The University Science Bulletin. 



SYSTEMATIC TREATMENT OF THE SPECIES. 



KEY TO SPECIES. 



A. Apex of tegmina strongly acute; costal margin straight clear to tip. 

 B. Brownish or greyish species. 



C. Darker and larger species. 



D. Male plates long and narrow, parallel-margined, apices 

 rounded; last ventral segment of female without lateral 

 angles. acuminatus Van D. 



DD. Male plates broad and shorter, apices distinctly diver- 

 gent; last ventral segment of female with distinct lateral 

 angles. angulatus n. sp. 



CC. Lighter and more slender species. inornatus (Bak.). 



BB. Greenish species. productus n. sp. 



AA. Apex of tegmina rounded; costal margin not running straight clear to tip. 

 B. Species brownish or greyish, not distinctly green. 



C. Species large; last ventral segment of female strongly pro- 

 duced medially. brunneus Ball. 

 CC. Species smaller; last ventral segment of female normally 

 produced. 



D. Species with elytra distinctly variegated. 



viridis var. variegatus Ball. 



DD. Species with elytra not variegated pallidus n. sp. 

 BB. Greenish species. 



C. Species larger; plates of male tapering and distinctly divergent 

 apically. viridis Ball. 



CC. Species smaller; plates of male parallel-margined and but 

 slightly divergent apically. obtutus n. sp. 



Acinopterus acuminatus Van D. 



(PI. VIII, fig. 1; pi. IX, fig. 1; pi. X, fig. 1; pi. XI, fig. 1; pi. XII, figs. 1, 2.) 

 Acinopterus acuminatus Van D., Psyche, vi, p. 308, 1892. 

 Acinopterus acuminatus G. & B., Heniip. Colo., p. 94, 1895. 



Acinoptervs acuminatus Van D., Bui. Buf. Soc. Nat. Sci., viii. No. 5, p. 69, 1907; ix, p. 

 225, 1909. 



Acinopterus acuminatus Osb., Ohio Nat., ix, p. 466, 1909. 

 Acinopterus acuminatus Smith, Cat. Ins. N. J., edn. 3, p. 105, 1910. 

 Acinopterus acuminatus Barb., Bui. Am. Mus. Nat. Hist., xxxiii, p. 534, 1914. 

 Acinopterus acuminatus Van D., Trans. San Diego Soc. Nat. Hist., ii, p. 54, 1914. 

 Acinopterus acuminatus Mete, Jl. Elisha Mitchell Sci. Soc, xx.xi, p. 23, 1915. 

 Acinopterus acuminatus De L., Tenn. St. Bd. Ent., Bui. 17, p. 89, 1916. 

 Acinopterus acujninatus Van D., Cat. Hemip. N. A., p. 675, 1917. 

 Acinopterus acuminatus Lathr., S. C. Agr. Exp. Sta., Bui. 199, p. 102, 1919. 

 Acinopterus acuminatus Laws., Kans. Univ. Sci. Bui., xii, p. 207, 1920. 



The following is the original description of this species: 



Fulvous brown tinged with dull green or yellowish, elytral nervures pale, 

 brown-margined. Length, 5-6% mm. 



Head pale. Front with about eight brown arcs, more or less distinct. 

 Pronotum feebly calloused on the anterior margin, with a few shallow im- 

 pressions arranged parallel to the edge, more obvious in the males; lateral 

 margin as long as the latero-posterior, acutely carinated; disc posteriorly ob- 

 scurely wrinkled. Basal angles of the scutellum with a brownish triangular 

 spot more or less apparent. Pectoral pieces usually more or less invaded with 

 blackish, sometimes pale and immaculate. Legs pale, or suffused with 



