86 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Boiscluval. referriiifr to a ])iKlly preserved specimen, remarks: "Les epines on pointes sont 

 noires, assez longues et dentelees .sur le second et le troisii'ine anneau; la eollerette est au.ssi garnie 

 de pointes roides.'' 



Geoijrapldml dhtr'thutlon . — Brazil (Donckier, Boisduval, Peters). It is not known from 

 any other country than Brazil. Boisduval states that it is in certain jears verj^ common in 

 Brazil. wliil(> during others oidy a few caterpillars occur. 



^DELOCEPHAL^ AVA-RDII (Boisduval). 



(PI. XXXIII, tig. 2.) 



Othorcne. iranlii BoisnrvAL, Annales Sue Eiit. Belgique, XV, 1S7l\ p. S4, PI. Ill, fig. 2. 1872. — Bcrmeister, 



Descr. Phys. Kep. Argentine, AtUn, p. 4(i, Larva PI. XX, tig. .S. 1S79. 

 Adelocephala wardi Kirby, Syn. Cat. Lep. Het., I, p. 741. 1892. 

 Oi/iorene wardii Peters, Heteroceren-Raupen, p. 10, Taf. Ill, iig. la, 1. (1898-) 1901. 



Larr<i. 



(PL XVII, fig. 3.) 



Bnrmeiiler, 1. c. Atlas, PI. XX, fig. 3, 1879. 



Peters, Heteroceren-Raupen, p. 10, Taf. Ill, fig. 1; In, pupa. (1898-) 1901. 



Imago. — 1 <J , 1 9 . In the male the shape of the wings is as in A. hogei and more especially 

 A. hoisdxirdlH, but the costa is still more .straight, and the fore wings are more acute at the 

 apex, being a little longer and narrower than in either of the two species named. The 

 hind wings are of the subtriangular shape of tho.se of A. hoisditrall! and suha/igiilafa. the apex 

 being well rounded and the outer edge very slightly excavated; the end of the abdomen is broad, 

 flattened, not laterally tufted; antenna' broadly pectinated on the basal half. 



Thorax and fore wings of a beautiful, soft, hoary, purplish hue; the middle of the thorax 

 ocher yellow, the band widening toward the abdomen, the base of which is also yellowish. Fore 

 wings hoar}' lilac along the costa and in the middle and on the outer edge of the wing; on the 

 base of the wing behind the costal edge an ocherous patch, and another broad one near the outer 

 edge, ending on the internal angle. No definite transverse lines, but a broad ocherous region or 

 band extends from the two white discal spots to the apex, the apical portion of the costa being 

 ocherous; this ocherous band is mottled with purplish. The two discal spots of unequal size, not 

 as in A. hogei, arranged in a line at right angles to the costal edge, but parallel with it. Hind 

 wings ocherous at base and on the outer edge, the rest of the wing dull, purplish. Beneath, the 

 wings of both pairs are purplish, marked with ocherous near the apex and along the inner edge. 

 Abdomen purplish, with vellow bands on the basal two-thirds. 



In the female the fore wings are broader, less acute at the tip, of much the same shape as in 

 A. hicolor 9 ; the hind wings are not triangular, but of the normal shape, the apex being 

 rounded and the outer edge full and rounded. Thorax as in the $ , ))ut the yellow median band 

 narrower. The wings of both pairs luiiformly clear, beautifid fawn brown or dark leonine, 

 without striga^; the fore wings hoary and purplish violet at base, and along the outer edge a 

 single minute discal dot. Hind wings like the fore wings, with no markings. 



Expan.sc of fore wings, cj , 72 mm.; 9, 52 mm. Length of fore wing, ,? , 37 mm.; 9, 

 27 mm. Breadth of fore wing, ^,15nmi. ; 9,12 mm. Length of hind wing, (?,20mm.; 9, 

 15 nun. Breadth of hind wing, $ , 15 mm.; 9 , 13 mm. 



Burmeister states that the female is double the size of the male. It is very ditferent. A 

 female in Strecker's collection is of the same color as Citheronia sejndcraUg. 



This is the most conspicuou.sly marked species of the genus, differing from all the others 

 known to me in the beautiful, soft, frost}', purplish-brown tints, the more yellow shades, and in 

 the arrangement of the two oval, discal, white spots. 



Peters sjjcaks of the remarkable sexual dimorphism of this species, the male with a ground 

 color of chocolate brown, but with large yellowish patches, as in my male above described. 



