156 Journal New York Entomological Society. [Vol. vi. 



The moths emerge rather late in the season. Professor G. H. Hud- 

 son has taken them at light between June 26th and July 29th at Platts- 

 burgh during several years. My own dates for bred moths are July 8th 

 to 19th. 



Full grown larvae are not found till September. In Long Island, 

 eggs and young larva? were found on the trees at the time the larvae of 

 T. testacea were maturing. 



This larva is a little more specialized than T. testacea, in that the 

 dorsal patch becomes earlier defined and grows larger while the granules 

 are a little more papillose. The two larvae, however, are not distin- 

 guishable in any strong character. 



The larva is rather a low feeder, occurring on higher bushes and the 

 lower branches of trees, along the edges of woods, etc. , not as a rule in 

 very shaded locations. Rarely more than one larva is found on the 

 same plant. They are well scattered, not affecting any particular tree 

 and occurring almost everywhere, not abundant locally and elsewhere 

 rare as H. flexuosa is. The larva remains on the back of the leaf 

 where its shape and color are adapted to its concealment. 



Criticism of Previous Descriptions. The " T. testacea" that Dr. 

 Packard described from a larva I sent him, may be correctly named. 

 The date of occurrence would decide. 



Description of the Several Stages in Detail. Stage I. — Add : Setae 

 large, strongly alternating, those on joints 5, 7, 9 and 11 leaning out- 

 ward. 



Stage II. — Read : Elliptical, narrowed behind, tail quadrate. Sub- 

 dorsal ridge rather square, dorsum flat, rounded ; sides concave. Lat- 

 eral ridge moderate; subventral space small, retracted. Setae short, dis- 

 tinct, pointed, black, two on subdorsal ridge, one on lateral ridge on 

 abdomen. Depressed spaces large, sharply edged, deep, as in the ma- 

 ture larva. Latticed ridges apparently one granule wide, but not smooth 

 and clear, being all finely papillose, especially on the lateral ridge, 

 though also showing on the subdorsal ridge, feathery and frosted. 

 Color frosted whitish, no marks. Length, 1 to 1.6 mm. 



Stage III. — Read : Elliptical, tail rounded quadrate, structure as 

 before. Setae still distinct, short, black. Skin neatly granular as in 

 T. testacea, papillose only around the margin. Colorless, greenish, a 

 faint red shade centrally on the subdorsal ridges. Later this develops- 

 into a large red patch, becoming rounded, the depressed spaces covered 

 by it pale. Length, 1.6 to 2.5 mm. 



Stage IV.— (Plate VIII, fig. 8). Elliptical, both ends rounded, the 



