THE CANADIAN ENTOMOLOGIST. 4Ul 



collections as X 77//^///7/rt, and it may be best described by comparing 

 it with that species. X. fluduata is oi.e of the commonest of the 

 European Geometridne, and is also abandant in the eastern part of this 

 continent. I have, therefore, been able to secure a fine series for com- 

 parison. 



X. poutiat ia is larger and paler, and the median band is not nearly 

 so black and contrasting as \x\ fluduata. The intra-discal line \u pojitiaria 

 is even and regular in its course (as in X. lie/ensaria, for instance), while in 

 tludnata it is very irregular, encroaching on the median band at the veins, 

 ]>articularly at vein 8. The extra-discal line in the same way has many 

 sharp angles \w fluduata^ which angles are all rounded o^'\Vi poiitiaria. 



In fresh specimens oi poniiaria there is a slight tinge of pink iu the 

 central band, which is never seen \x\ Jiudiiata. 



I have four good specimens o{ pontiaria before me, namely, one male, 

 Salem, Oregon, 2nd June, 1904, and three females, Wellington, 20th June, 

 1905; 26th June, 1904, and 23rd May, 1905. The last named I have 

 labelled as a type. 



17. Xanthorhoe fossaria, new species. — Expanse, 35 mm. This is 

 a s])ecies somewhat nearer to the miniitata group than the one last 

 described. 



It has been sent to me from Laggan, 6,850 feet altitude, and from 

 Mount Cheam, B. C , having been taken in the former locality by Mr. F. 

 H. Wolley Dod, and in the latter by Messrs. Harvey and Bush. It is 

 evidently a mountain-loving species, and the scaling of the wings is of that 

 peculiar hairy character so often seen in forms from high altitudes or 

 extreme northern localities. 



The wings are long, rather narrow and pointed, the inner margin 

 being shorter than in miinitata and its allies. 



The colours are dull, and all the markings are obscure, the usual lines 

 being present, but not easily made out. There is a dull pinkish shade 

 overspreading the median band. The intra-discal line is much straighter 

 than in convallaria or nemorella. 



The marginal line is made up of almost contiguous black dashes, not 

 of distinct dots in pairs, one on each side of each vein, as in fiudiiata and 

 pontiaria; and the fringe is dusky, with a darker line centrally, and lacks 

 the dark spots at the ends of the veins, which are so distinct in the two 

 species last named. 



