172 



cosla. Hind legs rather thick ; tarsi as long as the tibite. Abdomen very 

 tliifk ; cxtreniity large and conical, nut tutted as in Philcrt'me. Coloration : 

 ■botli 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, us well as 

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



Hydria undulata Hiibner. Plate 9, fig. 17. ^ 



ffi/dria iixdulatd Hiil)U., Tent;imen, 180Ci-10. 

 Calocnipe iiiidiihita HUbu., Verz., 330, ltfl8. 

 Jcidalia midiilnia Treits., Si-bni. Eur., vi (ii), 153, 1H28. 

 Laniitia undulata Dui)., Le]i. Fiance, viii (v), 377, 1830. 

 Eiiconmin iiiidulalu .SU'ph., 111., iii, ".^65, 1831. 

 tarenlia undulata Boisil., Gen. led., 20."i, 1840. 



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

 Caloialpr undulata .Stppb., Cat. Br. Lcp., 'JIO, 18.')0. 

 Scotosia undulata GuiMi. !, Phal., ii, 4411, 18.')7. 

 Eucosmia undulata Stau<linger, Cat., 78, 18G1. 

 Scotosia undulata Walk.!, List Lep. Het. Br. Mus., xxv, 134(i, 1862. 



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

 about twelve well-marked, white, scalloped, parallel, apj)roximate lines, 

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

 with one of the dark lines runniny- throuifh it ; the l)ro\\ii lines alternatinir 

 with the white ones liecome 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 al>()nt 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, (?,0.75, 9,0.75; expanse 

 of wings, 1.55 inches. 



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

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

 Ma.ss., June 24, October 10 (Harris Coll.); Brookline, Mass., August 6 

 (Shurtleff); West Roxbury, i\[a.ss. (Sanl)orn) ; Amherst, Mass. (Goodell) ; 

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

 Black Hawk, Colo., elevation about 8,000 feet, July 2, several taken in a guldi 

 iil)ov(! the town (Packard, lluyden's Survey); Victoria, Vancouver Island 

 (Crotch). 



