MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 87 



riu>ui;li tlic larva is of tlic type of .1. h!,;>l,,r in the abdominal dorsal spines being alternately 

 lonj.'- and >liort. tiio moths of the two s])ocies diticr very iiiiuh in the shape of the wings of the 

 lualo. Hoisdmurs figure represents it fairl}' well. 



Lari'd (Plate XVII, tig. 3). — Hurmeister speaks of it as being the most remarkable of all 

 the siiecies of "(Yratoeanipa." T]i(> segments of the l)0(ly are siiort though large, with deep 

 sutures l)etwe(Mi them. The tirst thoracic segment b(>ars four dorsal spines, with two on each 

 side in front of the stigmata. The second and third beai- two stout dorsal violet spines and one 

 on each side. Of the abdominal dorsal spines those of the second, fourth, and sixth segments 

 are very large and of a brilliant siher hue, while those of the alternating segments are violet. 

 The long caudal horn is violet. The suranal plate is coarsely granulated. 



Peters descrilies the larva as green with three great shining silvery spots on the side, and 

 with a number of gleaming spines. 



Pupa. — Of the usual generic form, with a long cremaster and stout, short spines on the head. 



Geographical dUtrihifio/t. — Rio Janeiro. Brazil (Rurmeister, Peters). 



Jumd plants. — It lives on various leguminous plants, notably a spiny Mimosa whose leaves 

 are violet brown on the under side (Peters). 



^r)ELOCEPII.A.L^-V AN'THO^sTILIS Hevrich-SchaefTer. 



Adelocephala antlwnijis Herrich-Schaeffer, Saml. Aussereur. Schmett., p. 60, pi. 17, figs. 79. 1854. — Walker, 

 Cat. Lep. Het. Brit. Mus., VI, p. 1499. 18.5.5.— Boisdival, Annales Soc. Ent., Belgique, XV, p. 88. 

 1872.— KiRKY, Syn. Cat. Lep. Het., I, p. 741. 1892. 



Syssphliu anthonilis Dvar, Proc. Ent. Sot-., Wash., IV, p. 429. :May 13, 1901. 



IiiKtijd. — 9 of a peculiar uniform grayish brown, neutral tinted or slate color. An oblique 

 basal dark narrow line; e.xtradiscal line conunon to both wings; that of the fore wings slightly 

 sinuous and ending on the costa near the apex; that of the hind wings curved outward, a faint 

 discal line. In shape the wings are like the female of ^1. wnatoria. and the body and wings are 

 of the same size. We have not seen an example of this species, but judging from Herrich- 

 Schaeffer's tigure of it the ? resembles an Anisota in geneml appearance, but the larval shape 

 shows that it l)elongs in the present genus. It presents none of the characters of Sy.ssphinx; 

 certainly not those of the larval stage. 



Lariia. — Entireh' black and provided with long spines of equal length, all curved backward, 

 like that of a porcupine when walking. The spines of the first thoracic segment (eollerette) are 

 very marked, but much shorter than the others (Boisduval). 



Geographical distribution. — Brazil (Herrich-Schaeffer; British Mu.seum). 



Food plants. — It lives on several kinds of trees and the moth is disclosed at two epochs 

 (Boisduval). 



Judging by Boisduval's statement, this species, whose larva is armed with well-developed 

 prothoracic dorsal spines, must be a primitive form. 



ADELOCEFH^LA. JtTCTJ:S"r)^ AValkev. 



Adelocephda jucxmdti Walker, List Lep. Br. Mus., VI, p. 1.500. 18.5.5. — Boisdcval, Ann. Soc. Ent. Belgique, 



XV, p. 91, 1872.— KiRBY, Syn. Cat. Lep. Het., I, p. 742. 1892'. 

 Adelocephala dimidiata Hebhich-Schaeffer, Aussereurop. Schm. fig. 307. 18.55. — Kirby, 1. c, p. 742. 1892. 



Imago. — 1 S . Shape of the wings and antenna? as in A. bicolor, but the hind wings more 

 rounded at the apex and more produced toward the inner angle. It is of a more uniform darker 

 chestnut or fawn color than any of the other species. A shade passes from the base of the fore 

 wings along the cubital vein turning up to the apex; on the costal side, clear chestnut; on the 

 hinder side, lilac and fro.sted over with white scales. A faint discal dot or streak. Hind wings 

 reddish chestnut. Fore wings reddish beneath, hind wings whitish ocherous, as in the body and 

 legs, though the fore legs are reddish in front. The head in front is white; abdomen whitish on 

 the sides and beneath; fringe of the hind wings whitish ocherous. 



