, THE CANADIAN ENTOMOLOGIST. 345 



and 600 cc. of water, allowing the room to remain closed 14 hours. We 

 made a slight mistake in our computation, and used i oz. more of cyanide 

 than our formula called for. 



The results were surprising and very gratifying. Every bedbug in 

 every case was killed. 



The fumigation was done June i, and as I write, June 12, none of 

 the eggs have shown any signs of hatching. It is impossible for me to say 

 whether they are fertile or not, but it is reasonable to suppose that they 

 are. We obtained them by confining a dozen or more adult bugs in a 

 large vial, and on the second day we found eggs in abundance. The eggs 

 must have been formed in the females under natural conditions in the 

 bedsteads from which they were taken, and very likely the bugs were 

 fertilized there before we collected the females. 



Acknowledgments are due to Mr. R, W. Harned for his aid in the 

 execution of the fumigation done this season. 



SOME NEW SPECIES OF WESTERN GEOMETRID.^. 



BY JOHN A. GROSSBECK, NEW BRUNSWICK, N. J. 



Gymnocelis remorata, new species. — Expanse, 16-17 mm. Head, 

 thorax and abdomen pale creamy-white, the abdomen somewhat the 

 darkest. Wings whitish, variegated with shades of small pale brown 

 patches, which show up the ground colour in a series of transverse white 

 lines. On the primaries the first of these white lines is near the base, 

 inwardly edged with brown and outwardly fused with the ground colour. 

 Intradiscal line geminate, begins at costa and extends outward to cell, 

 then inwardly, dentate to inner margin. Median line geminate, originates 

 at centre of costa and extends outwardly, the inner line bordering the 

 discal spot outwardly, then runs obliquely dentate to centre of inner 

 margin. Extradiscal line dentate, geminate, subparallel with median line. 

 All these lines show up most prominently on the costal area of the wing ; 

 less so on the remainder of the wing, yet readily to be followed. Sub- 

 terminal line single, finely dentate throughout its course. Terminal line 

 brown, sometimes interrupted by white at the venules. The brown 

 patches appear most plainly on the costa, especially between the intra- 

 discal and median lines, immediately outward of the median line and 

 between the extradiscal and submarginal lines. A rather prominent 



October, 1907 



