'308 



DYSPTERIS Hiibner. Plate 4, fig. 6. 



nyspteris Hubu., Verz., 286, 1818. 



H.-Seb., Ausserenr. Schni., 18.')4-58. 



Guen., Pbal., i, 3()1, 18.=./. 



W:ilk., List Lcp. Het. Br. Mns., xxii, .^57, 1801. 



Head rather large; front large and prominent, not narrowing anteriorly. 

 Palpi not reaching beyond the front; second joint broad, though very distinct 

 from, and narrower than, (he first; third minute, shoif, conical, not so long 

 as the second joint is wide. Antennae pectinated in tlie male rather broadly 

 on the basal two-thirds. Fore wings very large; costa much arched; apex 

 much produced; outer edge very oblique ; inner edge but little more than 

 half as long as the outer. Hind wings much aborted, small, regularly trian- 

 gular; outer edge slightly convex; apex subrectangular ; the wings reach as 

 far as the tip of the abdomen. Venation : fore wings with a large sul)costal 

 cell; the second subcostal but little longer than the third; fifth subcostal 

 venule long, thrown off from the subcostal cell. In the hind wings, the costal 

 area is very broad. 



This peculiar genus diflers from all others of the subfamily in the great 

 difference in size between the wings, the anterior pair being very large and 

 the hinder diminutive and triangular in outline, the outer edge being very 

 straight. The species only occur in the New World. 



Dyspteris abort ivaria Herr.-Sch. Plate 10, fig. 75. 



Dysptcris aborlivaiia H.-Scb., AufcHereur. Sclim., 62, fig. 346, 1804-58. 

 Guen., Phal., i, 363, 18.->7. 

 Walk., List Lep. Het. Hr. Mus., xxii, 5,57, 1861. 



3 J and 2 9. — Pea-green; head and thorax lather darker. Antennae 

 green above on the basal half, white beyond, [)ectinations testaceous. Palpi 

 green; thorax green above and beneath, except the hind pair of trochantines 

 and coxae, which are concolorous with the pale-yellowish abdomen. Fore 

 wings crossed by two parallel, oblique, white, moderately wide lines, straight, 

 not waved ; the inner fiiding out before reaching the cista, disappearing near 

 the distinct white discal dot; the outer line parallel with the outer edge, 

 slightly bent before reaching the costa; fringe green. Hind wings with 

 a single line, ratlier broad and diffuse Beneath as above, Ijiit with two 

 broad, diffuse lines, one sul)marginal on the fore wings; discal dols much 



