10 PROCEEDINGS OF THE ACADEMY OF 



tween the first and second subcostal branches, and the last from the apex of 

 the discoidal cell, together with an apical branch, which almost immediately 

 sends off a nervulet to the inner margin, whilst the apical proceeds through 

 the middle of the slender, acicular caudate extremity to its tip. At the basal 

 third of the wing, the sub-costal nervure becomes attenuated. The costal is 

 nearly coincident with the margin ; the sub-median furcate at the base. The 

 posterior wings are narrow, almost setiform, and without a discoidal cell. 

 The sub-median is central, simple, and faintly indicated until near the tip, 

 when it becomes furcate. The median, which is better defined, runs near the 

 inner margin, and subdivides into three branches to the inner margin. The 

 costal is coincident with the marginal. 



Head perfectly smooth, advanced, long, and flattened above ; forehead very 

 convex and globose ; face full, rounded, and somewhat retreating. Ocelli 

 none. Eyes flattened, scarcely visible in front, oval. Antenna? nearly as 

 long as the anterior wings ; basal joint long, slender, and clavate ; stalk seta- 

 ceous and simple. Maxillary palpi extremely short, scarcely perceptible. Labial 

 palpi very long, slender, much recurved, and pointed ; the second joint some- 

 what compressed toward the end, shorter than the third. Tongue scaled, as 

 long as the thorax beneath. 



C. ? gem mif erella . Labial palpi dark greenish brown, with a silvery 

 stripe on the front of the third joint, and another behind, continued to the 

 second joint. Face, head, and thorax, dark greenish brown, with a narrow, 

 central, silvery line continued to the thorax, and one of the same hue above 

 the eyes on each side. Antennae dark greenish brown, with two silvery lines 

 on the basal joint, the stalk annulated with silvery, and a broad, silvery ring 

 before the tip, which is likewise silvery. Fore wings dark greenish brown to 

 the middle, and from the apical third to the tip, with an orange-colored patch 

 rather beyond the middle of the wing, extended across the wing, and a little 

 produced along the costa behind, having a large, transverse, oval, smooth 

 patch of elevated, silvery scales somewhat violet-hued, on its internal margin 

 the patch extending nearly across the wing ; another smaller and similar, 

 nearly round one behind it, on the inner margin, and another small one on 

 the costa, behind the produced portion, with a white costal streak above it in 

 the cilia. All these patches are somewhat black-margined. Near the base of 

 the wing are three short, silvery streaks, one nearly on the disk, one near the 

 fold beneath it, and an oblique one above it, near the costa. The cilia of the 

 extreme apex is silvery white, black-margined above, with a violet silvery 

 scale in the middle of the wing, before the tip. The inner margin, at the base 

 of the wing, is silvery. Hind wings dark brown ; cilia somewhat paler. 



The ornamentation of this insect is very elegant. Taken on wing in June, 

 July. 



EUDARCIA. 



Head and face rough. Without ocelli. Eyes small, hemispherical quite 

 prominent, with a naked space above ? Labial palpi short, rather smooth, 

 and separated ; the third joint somewhat less thick than the second, and 

 nearly as long. Maxillary palpi long, folded, and five or six-jointed. An- 

 tennae, basal joint moderately long, approximated on the front, simple, and 

 full as long as the anterior wings. Tongue naked and very short, scarcely as 

 long as the labial palpi, and not reaching beyond the front. 



Fore wings with the subcostal nervure attenuated at the base ; at the basal 

 third arises a long marginal branch, and about its middle a furcate branch, 

 and thence the subcostal is faintly indicated to the discal nervure, beyond 

 which it reappears as a furcate branch to the costa behind the tip. The dis- 

 coidal cell is closed, and sends a single branch to the inner margin behind 

 the tip. The median subdivides into three approximate branches. The sub- 

 median is furcate at the base. In the hind wing the costal nervure is 



[Jan. 



