THE CANADIAN ENTOMOLOGIST. 229 



Florus is a variety of the female of dorcas. It occurs in Oakland 

 county, but is much less frequent than the usual form of the female. Wm. 

 H. Edwards, in describing Jlorus, says : "Upper side dark brown, a little 

 mottled with obscure yellow on disk of primaries at end of cell and 



outside the black spots in median interspaces only " 



I find this yellow existing as a mere trace in the first median interspace to 

 a patch of yellow outside of every black spot in the transverse row of spots 

 on the outer third of the wings, excepting the first spot next the costa on 

 the fore wings and the first two spots on the hind wings. The yellow at 

 the end of the cell in my series is less frequent than the yellow outside the 

 row of black spots. Dorcas males vary little, this being chiefly in the 

 width of the black border on the upper surfaces of the wings. 



I wish to express my appreciation of the deep interest which the late 

 Dr. Fletcher took in my observations upon this species. It is with the 

 greatest regret that I realize I am to receive no more of his instructive and 

 enthusiastic letters. As for the full history of dorcas, I am trusting that 

 the eggs will hatch, and that the larvae may be raised to maturity. 



NEW GEOMETRIDS OF THE GENUS HYDRIOMENA. 



BY L. W. SWETT, BOSTON, MASS. 



Hydriomena Barnesata, n. sp. — Expanse, 29-35 mm.; palpi very 

 long, 2 mm., and beak-like, black-scaled, white-tipped, front of head gray, 

 thorax and abdomen light gray. Fore wings ash colour, with greenish 

 shading basally and near border of wing ; hind wings smoke coloured. 

 The fore wings have indication of a band close to body, then an ash- 

 coloured space about 2 mm wide from basal band, then a black band 

 running straight from costa to inner margin, as in most of the Hydrio- 

 menas, a greenish space, then another black band same as first, only 

 slightly wider and more irregular in course, with a tendency to bend out- 

 ward on median vein, then a greenish space and a third line running 

 straight across same as others, only much narrower after it leaves the costa, 

 where it starts from a large spot. These three dark, wide bands form a 

 mesial band as it were, then from this mesial band of three straight bands 

 is an irregular, quite wide, pale, more or less mottled space, edged exter- 

 nally by an irregular, narrow black line which runs from costa, where it 

 starts from black patch running to vein 3, where it is broken, thence to 

 inner margin. Between this and outer margin is another black line, broad 

 near costa, and tapering as it reaches inner margin ; near apex of wing a 

 black dash, which runs to this irregular line, as is the case in most of the 



July, 1909 



