OF WASHINGTON, VOLUME XI, 1909. 119 



NEW GEOMETRIDvE AND NOTES. 



| Lepidopti-. i, < reometridjej 



BY RK iiARn I-'. PKAKSALL, Brooklyn. A". Y. 



So much attention has been directed of late by collectors to 

 this group, that it has resulted in the capture of many new and 

 singular forms. These have accumulated with great rapidity 

 during the past vear, and it seems advisable to give names to 

 some of those which in my opinion require to be thus accorded 

 specific distinction. Many more remain yet to be described, 

 especially among the Eupithccicc. It was with the intention of 

 reducing somewhat the unwieldy mass of material at present 

 classed as such that I proposed the genus Nasusina. I find in 

 practice that it works out with clearness the species which 

 should be placed under it, and that they present when grouped 

 three well-marked styles of ornamentation. One is represented 

 by the angulate linear picturing of the type, inferior Hulst, and 

 another by niveifascia Hulst and allies, with large blotches of 

 color, and a third by dcspcrata Hulst, with heavy, oblique cen- 

 tral wing-bands. With them must be included, Eup. leucata 

 Hulst, the unique type of which is at New Brunswick and was 

 recently examined by me. To the first group will belong the 

 species described below. 



Genus NASUSINA Pears. 

 Nasusina opinata, new species. 



Expanse : Male, 13 mm. ; female, 16 mm. 



Palpi moderate, heavy, black : above and at tip, white. Antennae 

 slender, shortly ciliate in male. Front whitish crossed below antennae 

 and above clypeus, with a narrow black line. Vertex, thorax, and 

 abdomen with gray and white scales mixed, the latter with pale ring 

 at base. Second segment and tufts which are well marked, jet black. 

 All wings much produced at apices, which are rounded. Color pale 

 silver-gray, with narrow cross lines of black, much like inferior Hulst 

 in pattern. A series of these lines parallel to each other from the basal 

 area of primaries, the outermost one-third from base rounding out 

 sharply and almost touching; the small oval jet-black discal dot turns 

 sharply backward and reaches inner margin about one-half its costal 

 distance from base. A narrow clear space follows, including discal dot. 

 Then a series of four black parallel hair-lines, the outermost much the 

 heaviest and forming inner boundary of extra discal geminate pale lines. 

 These lines run nearly straight across costa, then sharply toward outer 

 margin, making at vein 6 a backward turn, with angle blunt at apex, 

 and run in waves to inner margin, parallel with outer margin. Extra 



