me:moirs of tup: national academy of sciences. 131 



Ceratocarnpa regalis Harris, Cat. Ins. Mass., p. 72. 1835; Appendix to Hitchcock's Rep. Geology, Ma<s., p. 



592, 2d edit., 1835; Rep. inj. Ins. Mass., p. 287. 1841; Ibid., 3d edit., fig. 194. 1862. 

 Dorycampa regalis Di-xc.\N, Nat. Libr., XXXII, p. 161, PI. 18. 1845. 

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

 dratocampa regnllx Morris, Synopsis Lep. N. Anier., p. 229. 1862. 

 Cilheronia regalis P.\ck.\rd, Proc. Ent. Soc, Phil., p. 381, Xov. 1864. — (xRoTEand Ron., .Vniials Lyceum Xat. 



Hist., N. Y., VIII, p. 31. 1866. 

 Ceratocarnpa regalis BoiSDt;v.\L, Annales Soc. Ent. France (4""'ser. ), VIII, ji. 311. 1868. — Birmei.ster, Descr. 



Phys. Rep. Argentine V, Lep., p. 486. 1878; var. brissofii Ltirwa, Atlas, p. 45, PL XIX, fig. 3. 1879. 

 Ceratocarnpa (Citheronia) regalis Riley, Amer. Ent. I, p. 230, PI. I, Aug. 1869. 

 Cilheronia regalis var. infernalis Strecker, Papilio IV, p. 73. 1884. — var. nacngeri Xei'moegen', Ent. News, II, p. 



151. 1891.— Kirby, Syn. Cat. Lep. Het. I, p. 742. 1892.— Neumoegen and Dv.\k, Journ. X. Y. Ent. Soc. II, 



p. 150, Dec. 1894.— BErTENMfi.LER, Bull. Amer. Mus. N'at. Hist. X, p. 441. 1S9S.— Dv.tu, List N. A. Lep. 



p. 76. 1902. 



Lorn,. 



(Pis. X-XIII, XXI-XXII, XXIII, tig. 1, \XIV-XXVI, LIV.) 



Ahbot a.nd Smith, Lep. Ins. Georgia, II, Tab. 61. 1797. 



Duncan, Naturalists' Library. PI. 18, vignette p. 162. 1841. 



Riley, Amer. Ent. I, p. 230, PI. I, larva, pupa and imago, .\ug. 1869. 



Burmeister var. brls-folii, Atlas, p. 45, PI. XIX, fig. 3. 1879. 



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



Imago. — 2 ^ , 2 9 . Head and bodj- orano^e-red, marked with cream-yellow ocher. Head 

 orange, the tufts at the base of each antenna 3ellow. Collar yellow, broadly edged with j-ellow. 

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

 back along the inner edge of the tegula? and ending at the base of the hinder edge of the hind 

 wing. (This line is wanting in C. azft-ct and in C. pri/ic/jmb's, but is present in C. !<p1enilrns.) 

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

 phoronea being all yellow). 



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

 and the apex more obtu.se; orange reddish-brown, two large cream-yellow spots at base of 

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

 like the longitudinal series, by a deep orange tint. A prediscal yellow patch, but no true discal 

 spot, the veins being orange-red. A submarginal 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, antl one of the same 

 size on the inner edge of the wing; veins and their branches orange-red. 



Hind wings much rounded, more so than in C. aztcca, more reddish, less brown than the 

 fore wings; base of the wings and the costal region and inner edge ocherous yellow, with a broad 

 marginal, indistinct, very difl'use shade. 



Under side much more yellow and paler yellow 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, ditfu.se, 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 abdorufii with an oblong cream-white yellow spot. Abdomen orange-red. with 

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



Genitalia (PI. LIX, tig. 8(r, LX, tigs. 2, 2(:/, 2l>, 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 as 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 divisions, the ends of 

 which are rough and spiny; these claspers are much larger than in ('. s,j>nIcmU.\, while the 

 suranal plate is very much narrower; the genitalia on the whole are on a larger scale than in 

 C sepuleralis. ' 



