|uj( LIBRARY 



PROCEEDINGS 



OF TnE 



ENTOMOLOGICAL SOCIETY 



OF PHILADELPHIA. 



VOLUME VI— 1866. 



LEPIDOPTEROLOGICAL NOTES AND DESCRIPTIONS— No. 2. 

 BY AUG. R. GROTE AND COLEMAN T. ROBINSON. 



(Bead October 9th, 1865.) 



ARCTIA, Schrank. 



Arctia nevadensis, n. s. (Plate 1, fig. 1, % .) 



Anterior wings elongate, black or blackish, with broad pale yellow- 

 ish bands. A longitudinal narrower stripe runs from the base of the 

 wing to internal angle, becoming furcate immediately before the mar- 

 gin. This stripe is connected with the costa, immediately beyond the 

 base, by a short transverse band, and with the internal margin, a little 

 beyond, by a similar band. A very broad and prominent median trans- 

 verse band. Subterininally, a series of broad bands resembling the 

 letter K, with the straight stroke turned towards the base of the wing 

 and the upper limb, not attaining external margin, at within its center, 

 reflexed to costa before the apex. Costal edge blackish, interrupted 

 basally and at its center by the yellowish color of the transverse bands; 

 the subterminal bands do not extend over the costa. Fringes pale. 



Posterior wings pale yellowish, with a reddish tinge which obtains 

 principally along internal margin. An apical terminal black band, 

 more or less continued along external margin ; inside of this a few un- 

 equal spots, of which the largest is situate towards the anal angle. Xo 

 discal spots. Fringes pale. 



Under surface pale, reflecting the markings of the upper surface; on 

 posterior wings there is a series of irregular black costal spots and a 

 few black scales forming a spot on the discal cross-vein. 



Head and appendages and upper thoracic region, covered with long 

 black scales, immaculate. Beneath, the thoracic region and legs are 

 blackish, immaculate, without any pale spots or bands. Antennae dark 

 brownish, densely bipectinate ; the pectinations long and tapering to 

 the tips of the antennal stalk. Abdomen similarly colored with poste- 



PROCEEDIKG9 EST. SOC. PHILAD. MAY, 1866. 



