Mar., 1908] GROSSBECK : New GEOMETRID I'.t 



NEW MOTHS OF THE FAMILY GEOMETRIDiE. 

 By John A. Grossbeck. 



1. Gymnocelis mellisa, new species. 



Expanse, 15 mm. Palpi and front deep brown, both with a few white a 1 

 vertex with mixed brown and light colored scales. Thorax and first abdominal seg- 

 ment dirty yellowish-white, mixed with a few white scales ; remainder of abdomen 

 brown, whitish at the apex of the segments. Ground color of wings dirty whitish over- 

 laid with brown, and washed with brunneous at the base, radial vein, inner margin and 

 outer margin of primaries, and at the anal angle of secondaries. Transverse lines of 

 primaries composed of the light ground color, edged by the overlaying brown scales. 

 All extend out from costa to a little less than one third across the wing, then bend 

 sharply inward and run irregularly and obliquely to inner margin. Basal line single, 

 edged internally on costa by deep brown. Intradiscal line one third out from base, 

 geminate, edged externally before angle by a conspicuous brown mark which unites 

 with the linear discal spot. Median line geminate, passing just outside the discal 

 spot. Extradiscal line begins one third in from apex and is the broadest and best 

 defined line on the wing. Subterminal line single, narrow, defined and sharply den- 

 ticulated throughout its course. Terminal line brown, interrupted at the veins, the 

 parts slightly drawn inward between the veins forming distinct triangles on the anter- 

 ior half of the wing. Fringe gray, brown checkered on inner half. Secondaries with 

 six transverse lines, evident on inner edge of wing, the outer two faintly traceable to 

 the costa running parallel with the outer margin. Terminal line as in fore wings hut 

 the triangles not well marked. Discal spot brown, moderate in size, somewhat dif- 

 fuse. Beneath, paler than above, evenly shaded with brown on costal region and 

 outer area of primaries. The more conspicuous lines of the upper side are feebly 

 reproduced. Discal spots prominent. 



Type. — One male in my cabinet. 



Habitat. — Minnehaha, Arizona, September 3 (Hudson). 



This species bears a somewhat general appearance to Eupithecia 

 niveifascia Hulst but the generic characters will serve to distinguish it 

 from that species. 



2. Gymnocelis discoidalis, new species. 



Expanse, 16 mm. Head whitish becoming darker anteriorly till the apex of 

 the conic front is dark brown; palpi brown, projecting a little beyond the front. 

 Thorax whitish, peppered with black scales posteriorly ; a black spot on the middle 

 of each patagium. Abdomen whitish, sparsely scattered over with black scales ; apex 

 of segments black dorsally ; black lateral marks forming a broken line. OJround 

 color of both wings whitish. Basal, intradiscal and median lines of primaries barely 

 indicated by a scattering of black scales, the two latter marked on the costa by a 

 diffuse patch of black scales. Immediately outward of the median line is the 

 extremely large, round, black, discal spot, one millimeter in diameter and v< 

 trasting. Extradiscal line begins on costa in a black triangular patch of scales, 

 extends outward to M,, bends rather evenly around to Cu 2 , then is once feebly 



