1903] DYAR: — XORTH AMERICAX GEOMETRIDAE II7 



normal, no plates. Dorsum broadly sordid olivaceous with an irregular, geminate, yellowish 

 dorsal line. Subventral region broadly pale yellow, yenter sordid olivaceous. Feet slightly 

 sordid ; tubercles concolorous, obscure ; setae small. 



Stage II. Head rounded, scarcely bilobed, erect ; reddish luteous, sutures depressed ; 

 width .55 mm. Body normal, tubercles obscure, concolorous ; dull reddish brown, the dorsum 

 with traces of several irregular pale lines; stigmatal region broadly pale yellow, narrow on 

 thorax. Venter dark except medio-ventrally with several irregular pale lines ; feet and anal 

 shield pale. 



Stage III. Head rounded, not notched, clypeus moderate; pale yellowish, slightly 

 mottled, sutures of clypeus dark ; width .85 mm. Dorsum broadly blackish brown with three 

 pairs of fine irregular pale lines, of which the addorsal is the most distinct. Cervical shield 

 and anal plate yellowish, the former divided. Stigmatal region narrowly on the thorax, 

 broadly on the abdomen white, venter pale, all its dark marks obsolete ; feet pale. 



Stage IV. Essentially as before throughout. Width of head i.i mm. 



Stage V. Head rounded, squarish, erect; dark red brown, uniformly irregularly 

 reticulate with pale yellowish ; width 1.7 mm. Dorsal space broadly red-brown, geminate 

 dorsal and subdorsal brown lines on a pale field, waved; a similar, geminate, waved lateral 

 black line on a nearly white ground, shading to brown on the anal plate; subventral ground 

 color jellow, reddish marked behind the spiracle, faintl_\' brown lined ventrally. (Stage V 

 from a larva from Colorado.) 



Stage VI. Head rounded, normal, the clypeus large; rough, not shining, brownish 

 red, pale in the sutures and around the mouth, jaws and ocelli dark ; width 2.5 to 2.9 mm. 

 Abdominal feet on joints 10 and 13, normal, the last pair large. Tubercles normal, iv 

 stigmatal posteriorly, vi of two setae well separated, vii of three remote setae. Double 

 dorsal and narrow, lateral black lines, crinkled, linear; a single faint addorsal; a distinct 

 straight upper stigmatal, festooned upward anteriorl}- of the spiracle to touch the lower 

 lateral. All are absent on the reddish cervical shield and anal plate. A^enter and legs milky- 

 white, stigmatal region yellow, dorsal and lateral region shaded in with tan color or reddish 

 brown of darker or lighter shades. Spiracles black rimmed. (Stage VI described from 

 larvae from northern New York.) 



Harris says the larvae prefer the Hme tree, and I have found them on this 

 plant in Plattsburgh, New York. In Colorado they were on wild cherry in the 

 Platte Canyon. 



