THE CANADIAN ENTOMOLOGIST 249 



GEOMETRID NOTES. 



New Species and Aberrations. 



by l. w. swett, west somerville, mass. 



Hydriomena californiata Pack. ab. niveifascia nov. 



Expanse 30-35 mm. 



Wings pale gray, the red and smoky bands being replaced by 

 silvery white bands. The markings are as in normal californiata, 

 except that the watery line of the mesial band of the fore wings is 

 replaced with white. Where the basal and extra-discal reddish 

 shadings usually occur is also white. The marginal, smoky band 

 is replaced with white and the margin of the wings pale gray. 

 The hind wings are smoky brown, with two curved bands, as in 

 the normal form. The extradiscal dots on the fore wings are 

 minute and black. Beneath them is a trace of the white lines 

 above, showing through on the fore wings; otherwise, as in normal 

 calif orniaia. 



This is a most striking form, and would require some time 

 and study to place it correctly, if it were not for the date of capture 

 and the character of the palpi. I do not believe in describing 

 aberrations of the species of Hydriomena where they are slight, 

 but this albinic, banded form seems very unusual, and I recall 

 no previous case of this variation in North America form. 



Hololype—d', Coldstream, B. C, April 19, 1908, from Mr. 

 E. H. Blackmore, in my collection. 



Allotype— 9, Victoria, B. C, June 6, 1908, returned to Mr. 

 E. H. Blackmore. 



Nomenia obsoleta, n. sp. 



Expanse 20-23 mm. 



Fore wings white, with a very slight fuscous tinge, the costa with 

 nine or ten irregular brown lines, which, if produced, would cross 

 the wings. The first line curves outwardly to the median vein, 

 then stops and appears as a spot on the inner margin. The other 

 lines, continued to the intradiscal, show only as minute brown 

 dots on the median vein and inner margin. The intradiscal line 

 is very irregular and shows only very faintly, appearing as heavy 

 dots on the median vein and inner margin. The discal dot is small 

 and black, with the median space pure glistening white. The extra- 



July. ISIG 



