Geometridse 



Genus HYDRIOMENA Hubner 



This is a very extensive genus, which is well represented in 

 the temperate portions of both the Eastern and the Western 

 Hemisphere. There are nearly thirty species which have been 

 reported to occur in our fauna. 



(i) Hydriomena sordidata Fabricius, Plate XLII, Fig. 54, ?. 



Syn. n-ctangulata Faliricms ; iniolomta Borkhausen ; hirivata Borkhausen. 



The insect is found all over the northern United States and 

 Canada, and is common in Europe. Various varietal forms have 

 been described, based upon differences, more or less constant, in 

 the markings of the wings. 



(2) Hydriomena autumnalis Stromeyer, Plate XLll. Fi"- 



This is another species which is found in Europe, and also 

 occurs in the Pacific subregion of North America. It has an ex- 

 tensive synonymy, for a knowledge of which the student may 

 refer to Staudinger & Rebel's Catalogue of the Moths of the Pals- 

 arctic Region, or to Dyar's List. 



(3) Hydriomena speciosata Packard, Plate XLII, Fig. S2, ,^ . 



The home of this pretty species is in the southwestern por- 

 tions of the United States. It occurs in Texas, Arizona, and 

 southern California. 



(4) Hydriomena latirupta Walker, Plate XLII, Fig. 3s, 6 . 



Syn. lascinata Zeller. 



The insect is found almost everywhere in the United States 

 and Canada. 



(5) Hydriomena custodiata Guenee, Plate XLIII, Fig. 10, 



6 , upper side ; Fig. 11, ,5, underside. 



Syn. gueneata Packard. 



The moth is an inhabitant of the Pacific subregion. 



Genus TRIPHOSA Stephens 

 (i) Triphosa progressata Walker, Plate XLII, Fig. 45, 6 . 



Syn. iudubitata Grote ; dubitata Packard. 



The species occurs in the northern portions of the Pacific 

 subregion. 



"Soft-buzzing Slander; silly moths that eat 

 An honest name." Thomson.— Z/(5r;Yj', Pt. I\', 609. 



33' 



