197 



straight, curving around toward flic very much-rounded apex; the outer edge 

 is as long as the inner. The hind wings are unusually long and large, project- 

 ing far beyond the end of the abdomen, and with the cuter edge much 

 rounded. Venation: the first, second, third, and fourth subcostal venules 

 are remarkably short; the large subcostal cell is situated nearer the apex than 

 usual. The origin of the first median venule is remote from the others; the 

 lower discal venule is long and very oblique. Hind legs with the tarsi slen- 

 der and as long as the tibia?. 



Female. — Partially wingless, with the wings small and narrow, not reach- 

 ing to the end of the abdomen. The body is short and stout, and much 

 pointed toward the end. For other characters see page 41. 



OPEROPHTERA Hiibner. Plate 1, fig. 20. 



Operophtera Hiilju., Verz., 321, 1818. 



Acidalia Traits, (in part), Schm. Em-., vi (ii), 5, 1828. 



Cheimatobia Steph., Nomencl. Br. Ins., 44, 1829 ; " Cat., ii, 142, 1829." 



Larentia Dnp. (iu part), Lep. France, viii (v), 358, 1830. 



Cheimatobia Steph., 111., iii, 274, 1831. 



Larentia Boisil. (in part), Gen. Ind., 204, 1840. 



Cheimatobia H.-Seh., Schm. Enr., iii, 177, 1847. 



Steph., Cat. Brit. Lep., 197, 1850. 

 Chimatobia Lcderer, Verh. Bot. Zool. Ges. Wien, 251, 185:;. 

 Cheimatobia Guen., Pbal., ii, 258, 1357. 



Walk., List Lep. Het. Br. Mus., xxiv, 1166, 1862. 



The characters of this genus are provisionally like those of the sub- 

 family. The male of our single species may readily be identified by the 

 large, thin, partially hyaline, pale ochreous wings, with the numerous brown, 

 scalloped wings. 



Although usage has, in a degree, sanctioned Stephen's more euphonious 

 name, Hiibner's name was accompanied by a diagnosis, while Stephen's -was, 

 up to 1831, a simple catalogue-name. The law of priority compels ns here, 

 as elsewhere, often against our own will, to reject a useful name for one 

 older and therefore more lawful. 



Larva. — "Caterpillars short, slightly attenuated at the extremities, cylin- 

 drical, a little flattened beneath, with distinct lines; head globular, smaller 

 than the prothoracic ring; living on fruit-trees, contained in a folded leaf, from 

 which it eats circular pieces. Chrysalis contained in a small, oval, subter- 

 ranean cocoon." — Guem'i :. 



