172 



costa. Hind legs rather thick; tarsi as long as the tibiae. Abdomen very 

 thick; extremity large and conical, nol tufted as in Philereme. Coloration: 

 both wings crossed by distinct, uniform, scalloped, alternating white and dark 



lines. 



This genus is recognizable from the distinct, zigzag, white and dark 

 stripes, the long hind wings, beautifully tufted, but not scalloped, as well as 

 by the short palpi and the want of an infra-anal double tuft. 



IIydria undulata Hiibner. Plate 9, fig. 17. 



Hudria undulata HUbn., Tentameu, 1806-10. 

 Calocalpe undulata 1 1 f i 1 > 1 1 . , Verz., 330, 1818. 

 Acidalia undulata Treits., Schm. Eur., vi (ii). 53, 1828. 

 Lareutia undulata Dup., Lep. France, viii (v), 377, 1830. 

 Eucosmia undulata Steph., 111., iii. 265, 1831. 

 Lareniia undulata Boisd., Gon. I nil ., 205, 1840. 



H.-Scb., Schm. Eur., 144. 1847. 

 Calocalpr undulata Stepb., Cat. Br. Lep., 210, 1850. 



id undulata Guen. !, Phal., ii, 449, 1857. 

 / /■ "*mia undulata Staudinger, Cat., 78, 1861. 

 Scotosia undulata Walk.!. List Lep. Het. Br. Mils., xxv, 1346, 1862. 



5 S and 5 9. — Body and wings pale fawn-brown. Fore wings with 

 about twelve well-marked, white, scalloped, parallel, approximate lines, 

 becoming more deeply scalloped beyond the discal spot, which is large, black, 

 with one of the dark lines running through it; the brown lines alternating 

 with the white ones become blackish toward the base of the wing; the sub- 

 marginal white line is more zigzag than the others, and situated half-way 

 between the edge of the wing and the next white line. On the hind wings 

 are about six light lines, becoming whitish toward the outer edge of the 

 wing, as well as more zigzag; the lines are heavier than on the fore wings; 

 beneath, the wings are clearer, with the lines more or less obsolete, and the 

 discal dots large and distinct. 



Length of body, <?,0.50, 9,0.50; of fore wing, cf,0.75, 9,0.75; expanse 

 of wings, 1.55 inches. 



Brunswick, Me., common about houses (Packard); Essex County, Ver- 

 mont, July (Cassino) ; White Mountains, August 13 (Shurtleff) ; Cambridge, 

 Mass.. dune '24, October 10 (Harris Coll.); Brookline, Mass., August 6 

 (Shurtleff); West Roxbury, Mass. (Sanborn) ; Amherst, Mass. (Groodell) ; 

 West Farms. N. Y. (Angus) ; Easton, Pa. (Stultz) ; New Jersey (Sachs) ; 

 Black Hawk, Colo., elevation about 8,000 feet, Jul} 2, several taken inagulch 

 above the town (Packard, Hayden's Survey); Victoria, Vancouver Island 

 I Irotch). 



