MEMOIRS OK THE NATIONAL ACADEMY OF SCIENCES. 131 



Ceratocampa regalix IIauuis. Cat. Ins. MastJ., p. 72. 1835; A|)|ien(li-\ to llitc-licuck's Ki'p. (icology, Mas-s., p. 



592, 2(1 nWt., 18;{5; Kep. inj. Iii.-^. Ma.ss., p. 287. 1841; Il)id., ;M edit., tig. 194. 1802. 

 Dorijcampa reyalis Duxcvn, Nat. Libr., XXXII, p. 1(51, PI. 18. 1845. 

 Eacles laocoon W.\i,ker, Cat. Lep. Het. Br. Mus., VI, p. 1372. 1855. 

 Cemlocampn rei/aUx Morris, Synopsis Lep. N. Amer., p. 229. 1802. 

 Cithtrouia regalia P.\ck.\ri), Proc. Ent. See, Phil., y. 381, Nov. 18ti4. — (tRote and Ron., Annals Lyceum Nat. 



Hist., N. Y., VIII, p. 31. 1800. 

 Ceratocampa regalis Boisdiu-.m,, Annales Soc Ent. France (4""ser. ), VIII, p. 311. 180S. — Bi'k.mei.stkr, Descr. 



Phys. Rep. Argentine V, Lep., p. 480. 1878; var. brU'iolii Larva, Atlas, p. 45, I'l. XIX, lig. 3. 1879. 

 Ceratocampa (Citheronia) rtyallx Rii.EV, Amer. Ent. I, p. 230, PI. I, Aug. 1809. 

 Citheronia regalia var. iiifcrmilia Strei'Ker, Paiiilio I\', p. 73. 1884. — var. mcngrri Xeu.moegex, Ent. News, II, p. 



151. 1891.— KiRBY, Syn. Cat. Le)). Het. I, p. 742. 1892.— Neumoegen and Dv.^ii, Journ. N. Y. Ent. Soc. 11, 



p. 150, Dec. 1894.— Beutenmui.ler, Bull. Amer. Mus. Nat. Hist. X, p. 441. 1898.— Dy.\r, ListN. A. Lep. 



p. 70. 1902. 



Laria. 



(Pis. X-XIII, XXI-XXII, XXIII, lig. 1. VXIV-XXVI, LIV.) 



Abbot and Smith, Lep. Ins. Georgia, II, Tab. 01. 1797. 



Dunra}!, Naturalists' Library. Pi. 18, vignette p. 162. 1841. 



Rile;/, Amer. Ent. I, p. 230, PI. I, larva, pupa and imago, Aug. 1869. 



Burmeister var. briasutii, Atlas, p. 45, PI. XIX, fig. 3. 1879. 



Packard, Proc. Amer. Phil. Soc, Phil., XXXI, p. 163, May, 1893. 



Imago. — 2 $,29- Head and body oranffe-red, marked with cream-yellow ocher. Head 

 orange, the tufts at the base of each antenna yellow. Collar yellow, broadly edged with yellow. 

 Mesothoracic segment cream-yellow on the front edge, with a line of the same color pas.sing 

 back along the inner edge of the tegulte and ending at the l)ase of the hinder edge of the hind 

 wing. (This line is wanting in C. azt<x-(t and in C. principalis., but is present in V. xplendi-nx.') 

 A median short thoracic slash extending nearly to the base of the abdomen (the thorax in C. 

 phoronea being all \'ellow). 



Fore wings in S narrow, the apex pointed; outer edge very oblique in 9 . much wider, 

 and the apex more obtuse: orange reddish-brown, two large cream-yellow spots at base of 

 wing, one costal, the other at the base of the median vein (III), and the fold (V) well marked, 

 like the longitudinal series, b}- a deep orange tint. A prediscal yellow patch, hut no true discal 

 spot, the veins being orange-red. A submurginal oblique row of seven oval longitudinal yellow 

 spots parallel with the outer edge, the two near the costa the largest, the third one-quarter 

 .smaller, none in the extradiscal .space, a lai'ger one in the succeeding space, and one of the same 

 size on the inner edge of the wing; veins and their l)ranches orange-red. 



Hind wings much rounded, more so than in i'. aztcca, more reddish, less Urown than the 

 fore wings; base of the wings and the co.stal region and inner edge ocherous yellow, with a l)road 

 mai-ginal, indistinct, very ditfuse shade. 



Under side nuuh more yellow and paler j-ellow than above; the base of the fore wing, costal 

 region, and inner edge yellow (edge of costa brown); the seven spots more or less connected; 

 the veins as above. An orange-red discal spot, large, irregular, diffuse, on the fore wings; 

 lunate in shape on the hind wings, and on the hind wings a faint, orange-red, scalloped extra- 

 discal line. 



Base of the abdomen with an oblong cream-white yellow spot. Abdomen oi-ange-red, witli 

 a narrow yellow band on the front edge; beneath yellow. 



Genitalia (PI. LIX, fig. 8'i; LX. figs. 2, 2^/, 2^>, 2c): The suranal plate forming a long, narrow 

 style-like acute process; the upper claspers very large, convex, oval, seen from the side half 

 as broad a.s long, flaring, simple with no process at the end: the claspers of. the lower pair or 

 harpes (fig. 2, /;), forming two stout hooped processes, a little shorter than those of the 

 upper pair, curved upward and divided at the end into two black, solid divi.-ions, the ends of 

 which are rough and .spiny; these claspers are much larger than in C. sepulcralis., while the 

 suranal plate is very mucli narrower: the genitalia on the whole arc on a larger scale than in 

 C. sepulcralis. 



