249 

 THAMNONOMA Lederer. Plate 3, fig. 2, 2a, 2b. 



Perconia Hiibu. (in part), Verz., 296, 1818. 



liame HUbn. (in part), Verz., 299, 1818. 



Fidunia Treits (in part), Scbm. Eur., vi (i),265, 1827. 



Speranza Curtis, Brit. Eut., 225, 1828. 



Baha* Dup., Lep. France, viii (iv), 400, 1829. 



Fidonia Dup. (in part), Lep. France, viii (iv), 407, 1829. 



Grammatophora Stepb., Nomencl.Br Ius., 44, 1829; "Cat., ii, 126, 1829." 



Speranza Stepb., Nomencl., 43, 1829. 



Halia Boisd., Gen. Intl., 187, 1840. 



Evpiskria Boisd. (in part), Gen. Ind., 192, 1840. 



Fidonia H.-Scb. (in part), Scbm. Eur., iii, 88, 1847. 



Speravza Stepb. (in part), Cat. Br. Lep., 157, 1850. 



Ealia Stepb., Cat. Br. Lep., 159, 1850. 



Thamnonoma Lederer, Verti. Bot. Zool. Ges. Wieu, 232, 1853. 



Halia Guen., Pbal., ii, 91, 1857. 



Walk., List Lep. Het. Br. Mus., xxiii, 943, 1861. 

 Eupisieria Walk., List Lep. Het. Br. Mus., xxiv, 1040, 1862. 



Male antennae well pectinated, in the less typical species (subcessaria) about 

 half as long as usual; female antennae simple. Palpi very long, porrect, pointed, 

 the third joint long and extending sometimes by a head's length beyond the 

 front, or, as in T. wavaria and subcessaria, they are short and not much longer 

 than in Semiothisa, the third joint being small and depressed. A long double 

 tuft of hairs projects between the palpi. Fore wings very falcate, the apex 

 produced, and the outer edge excavated below the apex, with a dark line 

 bordering the excavation; the outer edge is full below the excavation. The 

 costal region is considerably wider; the subcostal venules longer than in Semi- 

 othisa; the first subcostal venule is about a fourth longer than the subcostal 

 areole, which latter is long, narrow, and curvilinear, as in Semiothisa, other- 

 wise the venation is very similar to that of Semiothisa. Hind wings in the 

 male with a prominent angle in the outer wings, as distinct or more so than in 

 any species of Semiothisa ; in wavaria and subcessaria less distinctly angular, 

 and much as in most of the species of Semiothisa; in the female, the outer 

 edge is bent, but not distinctly angular. The abdomen is much longer and 

 slenderer than in Semiothisa, and reaches to the inner angle of the hind wings. 

 Legs much as in Semiothisa, long and slender; hind tibiae long, not swollen, 

 and with the four spaces as usual. The species are either clear ochreous- 

 brown, with two distinct lines on the fore wings, or with markings similar to 

 Semiothisa. 



This- genus is recognized by the well-pectinated antennae and long palpi; 

 the species differ but slightly from those of Semiothisa in other points. In 



* llaha was pre-occupied for a genus of Mollusca by Risso in 1826. 

 32 p H 



