192 MEMOIRS OF THE NATIONAL ACADEMY OF SCIEXCES. 



Nat. Mus.); Maine, Rhode Island, New York. Michigan, (Jhampai.yn, 111. (French); Dallas, Tex. 

 (Boll, Mus. Coinp. Zonl.). 



Schizura Dciulileday. 

 (PI. XLIV, figs. 1-5. Venation.) 



Phalana .A.bbot .and .Smitli, Nat. Hist. Lep. Georgia, ]>. 1797. 



Hijboma (in part), Hiibner, Verz. Schmett., ji. 200, 1810. 



Schizura DoubleilaT, Entomologist, p. 59, 1841. 



Helerocampn Div. Ill, Walkei', List. Lep. Ins. Br. Mus., v, p. 1025, 18oo. 



(Edemasia Pack., Proc. Ent. Soc., iii, p. 359, 1804. 



Caiodasijs Pack., Proc. Eut. .Soc, iii. p. 303, 18(33.. 



Schizura Pack., Proc. Ent. .Soc, iii, i>. 363, 1864. 



Hatima Walk., (at. Lep. Het. Br. Mns., xxxii, p. 450, 1865. 



(EdemuMa Grote, New Check List X. Anier. Jloths, p. 19, 1882. 



Schizura. Grote, New Check List N. Amer. Moths, p. 19, 1882. 



Calodasys Grote, New Check List N. Amer. Moths, p. 19, 1882. 



Schizura (inclnding Cadodasys) Pack., P.syche, v, p. 53, May, 1888. 



(Edemasia Smith, List Lep. Bor. Amer., j). 30, 1891. 



Schizura (including Ccelodasys) Smith, List Lep. Bor. Amer., p. 31, 1891. 



(Edemasia Kirby, Syn. Cat. Lep. Het., i, p. 567, 1892. 



Schizura Kirby, Syu. Cat. Lep. Het., i, p. 567, 1892. 



Schizura (including (Edemasia) Pack., Psyche, vi,p. 522, .Sept., 1893. 



Neum. and Dyar, Trans. Amer. Eut. Soc, xxi, p. 201. .Tune, 1894 ; .Tourn. N. Y. 

 Ent. Soc, ii, p. 116, Sept., 1894. 



Moth. — $ and 9 . Head more prominent than usual, on tlie vertex two tufts inclcsing a 

 triangular hollow and projecting out between the antennae Eyes naked. Antennae well 

 pectinated ou basal two-third.s, the outer third filiform (thicker and more ciliated in *S'. ((piccdis 

 than usual); in 9 simjde. Palpi short, thick, blunt at the end, not extending beyond the front; 

 second .joint liairy beneath, the terminal scales reaching even with the tip of the third joint and 

 meeting beneath; the third joint small, short. Maxilhe well <leveloped (in S. unicornis), united, 

 and as long as the i>alpi. 



Thorax not regularly tufted, but the ends of the teguhe are ^lightly ui)tnrned and dark, and 

 on the underside below the head and in Iront of the legs is a large trinngnlar tnft of long hairs, 

 the ends of which are even with the front of the head. 



Fore wings a little less than one half as broad as long, costa nearly straiglit, .slightly convex 

 toward the apex, which is more i)oiiited tlian usual; outer margin slightly angnlated on the fifth 

 subco.stal venule, becoming more obli(iue below. Venation: A short or long subrhoniboidal 

 subcostal cell; costal region rather wide, the subcostal venules 1-4 not closely crowded; the 

 third subcostal venule (If,) shorter than usual, otherwise the venation of both wings is much as 

 in Heterocanipa. 



Hind wings somewhat produced or pointed at the apex, much more .so than in lleterocampa; 

 the costa nearly .straight, slightly bent downward near the apex; outer edge long, the lower half 

 dispo.sed to be parallel with the costal edge of the primaries. 



Legs rather short; femora and tibia^ densely hairy, the hind tibite are .shorter than usual and 

 with a broad tuft; the fir.st pair of tibial spurs small and slender, the outer one of the apical 

 (diseal) spars twice the size of the inner one. Tarsi small. 



Abdomen much slenderer than usual, with a distinct anal forked tuft, characteristic of the 

 genus. 



Coloration : The species usually with dark ash-gray longitudinal slashes, costo-apical white 

 and black spots, transver.se wavy lines, and a curvilinear diseal spot, except in S. conciiuia, where 

 the spot is a small black dot. The hind wings of the males are usuallj' sordid white and those 

 of the females dusky or mouse colored. 



The genus is recognized by the filiform end of the male antenuiv and the distinct male anal 

 tuft; by the peculiar vestiture of the head; by tlie short, thick palpi, as well as the pronnneut 

 head; characters in which it approaches Heterocampa, as well as the venation, though the hind 

 wings are longer and more pointed than in Heterocampa. 



