224 



The subcostal v(3nules are loiii£, the first one twice as long as the third. The 

 independent vein is niucli nearer the sixth subcostal than usual, and the pos- 

 terior discal venule is very obli(|ue. Hind legs long, tibite long, slightly 

 swollen, tarsi nearly as long as the hind legs. Abdomen long and slender, 

 much as in Euftdonia. Coloration bright deep oclireous, with transverse, 

 wavy, curved, darker lines. 



Tills remarkable genus differs from Fidonia, Eufidonia, and the allied 

 forms mentioned above, by those characters of the wings which would cause 

 it to be mistaken for an Acidalia; the venation is remarkably like Acidalia, 

 being like, that genus in all the points above noticed in which it differs from 

 its allies ; the form of the fore wing is also much Wke Acidalia, the costa 

 being full and the outer edge very oblique. The hind wings are in form 

 more like Eufidonia than Acidalia. On examination of the head, the very 

 large palpi, and the body, it is quite different from Acidalia and like Eujldonia, 

 except that the palpi are much longer. It is the most remarkable case of 

 mimicry of a higher form I have yet met with in this family. 



LoxoFiDONiA AciDALiATA Packard. Plate 9, fig. 44. 



Fidonia acidaliata Pack., Sixth Rep. Peab. Acad. Sc, 48, 1S74. 



G S and 2 9 . — This singular form would at first be mistaken for an 

 Acidalia. In the #ut of the wings, it resembles Ematurga atomaria of Europe 

 and our Ematurgaa faxonii, but differs from the species of that genus in the 

 long slender palpi and the slightly-pectinated antennae. Its palpi are much 

 longer than in Fidonia tnincataria, and the wings, ef.|)ecially the hinder pair, 

 much more pnxluced. The palpi reach beyond the head a distance equal to 

 the length of the latter. The male antenna; have long slender pectinations, 

 about twice as long as in /' Iruncutaria Walker. Body and wings deep 

 brownish-ochreous, the wings with dark-brown scalloped lines, both pairs 

 concolorons and with similar markings. Fore wings with about eight wavy 

 lines, the basal angulated on the costa, and remote from the second. The 

 second and fifth broader and heavier than the others (inclosing three fine 

 lines), both angulated a little below the subcostal vein, the fifth a little sinuous 

 and scalloped. The fifth and sixth separated by a distance equal to the 

 width of the abdomen. The seventh and eighth submarginal approximate, 

 finely waved. The eijrhfli soniclinics lust in a dark nuirgin. Fringe dark 



