aie:moiks of the national academy of sciences. 87 



Thoug-h the larva is of the type of ^1. hicoJar in the abdominal dorsal spines being alternately 

 long and short, the moths of the two species differ very much in the shape of the wings of the 

 male. Boisduvars figure represents it fairly well. 



Larva (Plate XVII, tig. 3). — Burmeister speaks of it as being the most remarkable of all 

 the species of •"Ceratocampa." The segments of the body are short tliough large, with deep 

 sutures between them. The first thoracic segment bears four dorsal spines, with two on each 

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

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

 are ver^* large and of a brilliant silver hue, while those of the alternating segments are violet. 

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



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

 with a number of gleaming spines. 

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



Geographical distribution. — Rio Janeiro, Brazil (Burmeister, Peters). 



Food plants. — It lives on various leguminous plants, notabh^ a spiny Mimosa whose leaves 

 are violet brown on the under side (Peters), 



j^DELOCEPH^L-A. ^INTTHOJ^ILIS Herrich-SchaefTei-. 



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

 Cat. Lep. Het. Brit. Mus., VI, p. 1499. 1855.— Boisduval, Annales Soc. Ent., Belgique, XV, p. 88. 

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



Syssphinx anthonUk Dyar, Proc. Ent. Soc, Wash., IV, p. 429. May 13, IHOI. 



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

 basal (lark narrow line; extradiscal line common to both wings; that of the fore wings slightlj- 

 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, -senatiirla, and the bod3' and wings are 

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

 Schaefier's figure of it the 9 resembles an Anisota in general appearance, but the larval shape 

 shows that it belongs in the present genus. It presents none of the characters of S3-ssphinx; 

 certainly not those of the larval stage. 



Larni. — Entirely black and provided with long spines of equal length, all curved backward, 

 like that of a porcupine when walking. The spines of the tirst thoracic segment (collerette) ai'e 

 ver}' marked, but much shorter than the others (Boisduval). 



Geographical dlstrlhuilori. — Brazil (Herrich-Schaeffer; British ^luseum). 



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 

 prothoi'acic dorsal spines, must be a primitive form, 



^DEI.OCEPHAI.A. .TTTCTJ>rX)^V AV.i 1 Ut-i-. 



Adelocephala jucunda Walker, List Lep. Br. Mus., VI, p. 1500. 1855. — Boisduval, .\nn. Soc. Ent. Belgique, 



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

 Adelocephala dimkliata Herrich-Schaeffer, Aussereurop. Schm. fig. 307. 1855. — Kirby, 1. c, p. 742. 1892. 



Imago. — 1 S . Shape of the wings and antenna- as in ^1, hlcolor, but the hind wings more 

 rounded at the apex and more produced toward the imier 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 frosted 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 liody and 

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

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



