Geometridae 



(3) Euchceca lucata Guenee, Plate XLIV, Fig. 6, $ . (The 

 Woodland Black.) 



The insect is distributed from western Pennsylvania and West 



Virginia to Illinois, and northward to Manitoba. It is not rare 



about Pittsburgh. 



Genus HYDRIA Hiibner 



(1) Hydria undulata Linnaeus, Plate XLII, Fig. 34, ?. (The 

 Scallop-shell Moth.) 



This neatly marked species is found in both Europe and 

 America. It is the only species of the genus in the United States. 



Genus PHILEREME Hiibner 



The species of this genus are all Western in their habitat. 

 (1) Philereme californiata Packard, Plate XLII, Fig. 36, $. 

 The specimen figured was taken on the slopes of Mt. Shasta. 



Genus EUSTROMA Hiibner 



This is quite an extensive genus found in both the New World 

 and the Old. Of the nine species recognized thus far as occurring 

 within the United States, we figure three. 



(1) Eustroma diversilineata Hiibner, Plate XLII, Fig. 42, $ . 

 (The Diverse-line Moth.) 



The moth is not at all uncommon in the Appalachian subregion. 



(2) Eustroma prunata Linnaeus, Plate XLII, Fig. 53, $ . (The 

 Plum Moth.) 



Syn. ribesiaria Boisduval ; triangidatum Packard ; montanatum Packard. 



The insect is found in both Europe and North America. 



(3) Eustroma atrocolorata Grote, Plate XLII, Fig. 43, $ . 

 (The Dark-banded Geometer.) 



A denizen of the Appalachian subregion. It is one of the most 

 beautiful of the geometrid moths found in the Atlantic States. 



Genus RHEUMAPTERA Hiibner 



A genus of moderate size, the species of which are found in 

 the temperate and boreal regions of both hemispheres. 



(1) Rheumaptera hastata Linnaeus, Plate XLII, Fig. 40, 8, 

 Fig. 41, ?, var. (The Spear-mark.) 



The species is very variable, and half a dozen forms have been 

 named. The only differences existing between these forms are 



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