140 PROCEEDINGS OF THE NATIONAL MUSEUM. 



the dorsum of 13 and juuil plate. A faint mottled geminate dorsal line, 

 ratlicr sharply defined on joints 11 and 12 in a shaded v mark. Kest 

 of body somewhat mottled, but no distinct markings. Warts very 

 small, i)alo, single-haired except VI, which bears several hairs. Several 

 hairs on the leg plate. Skin with microscopic pile, absent on the 

 tubercles. Setae short, dusky. Length, 2o mm. 



Cocoon. — "Webbed uj) between leaves." (Kiley.) 



Pupa. — Slender, tapering, light brown, shining, abdominal segments 

 sparsely linely i)uncture(l to the posterior border ; wing cases sliagreened. 

 Oremaster low, rather wide, rounded, coarsely wrinkled, blackish; 

 upper hook slender, projecting backward and bent downward, lower 

 hooks stout, two on each side, divergent, shortly recurved at the tips. 

 Length, 15 mm. 



Food plant. — Oak. 



ACRONYCTA CLARESCENS Guen6e. 



(PlatoH Iir, fin. :{, adult; X!I, li{,'. 11, Icmiilo adult; XVll, iig.:U, lofr; X X I, fig. 27, male 



genitalia.) 



Aeronycta clarescena GitknI^B, Spec. fJen., Noct., 1852, 1, p. .51.— Walkkr, Cat. Brit. 



Mus., H«t., 1X50, IX, p. (50.— licTLKK, Eiit. Aiiier., 1887, III, p. :^G, liamamelia. 

 Apalcla hacHtlala (iijoTK, Hull. U. S. Geol. Siirv., 1X82, VI, p. .575. 

 l^epUoreuma hacsUata (Jhotk, Papilio, 1883, III, p. 112. 



(iround color an even ash gray, sometimes with a faint suggestion of 

 a yellowish shading. Head usually with a dusky line in front; collar 

 with a dusky line at base and sometimes a smaller line just below the 

 tip. Primaries with all the markings quite well distinguished. Basal 

 line geminate, smoky, marked on the costa only. Transverse anterior 

 line geminate, smoky or blackish, almost evenly obliciue, a little out- 

 curv<^d between the veins in some specimens. The inner portion is 

 usually a little better marked and sometimes black; the intervening 

 space usually of the ground (!olor; but toward the middle of its course 

 it tends to become filled with smoky or blackish scales. Median shade 

 line marked on the costa, but usually be(;oming less until it reappears 

 in some specimens below the reniform. It is then very feebly marked 

 and smoky, running i)arallel as a whole to the transverse posterior 

 line. The transverse posterior line is geminate, the outer portion of 

 the line black, the intervening space whitish, the inner line smoky and 

 sometimes hardly traceable, the outer more or less broken, usually very 

 narrow, but sometimes comimsed of lunules and quite distinct. There 

 is a more or less evident pale subterminal line, beyond which the ter- 

 minal space is darker and sometimes black marked. A series of 

 terminal black lunules is preceded by a ])jiler line, and tlie fringes 

 beyond it are cut with smoky. There is a basal black dash wiiich as a 

 rule does not reach the transverse anterior line — in fact, in tiie over 

 thirty specimens examined by me it does not reach the line in any case. 

 There is a fairly evident dagger nnirk exteiuling from the subterminal 

 line in the submedian interspace, inwardly through the transverse 

 posterior line; but this may disappear entirely in some specimens. A 



