Geometridae 
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. 
(1) Hydriomena sordidata Fabricius, Plate XLII, Fig. 54, ?. 
Syn. rectangnlata Fabricius; bicolorata Borkhausen; birivatci 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 XLII, Fig. 
5 L $ • 
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 Palse- 
arctic Region, or to Dyar’s List. 
(3) Hydriomena speciosata Packard, Plate XLII, Fig. 52, $ . 
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. 35, S . 
Syn. lascinata Zeller. 
The insect is found almost everywhere in the United States 
and Canada. 
(5) Hydriomena custodiata Guenee, Plate XLIII, Fig. 10, 
$ , upper side ; Fig. 11, $ , under side. 
Syn. gueneata Packard. 
The moth is an inhabitant of the Pacific subregion. 
Genus TRIPHOSA Stephens 
(1) Triphosa progressata Walker, Plate XLII, Fig. 45, $. 
Syn. indubitata 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. — Liberty , Pt. IV, 609. 
33 1 
