6 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xii, 



the wing. In the apical region are two linear white scallops, the hinder one bordered with an 

 oblique chestnut-brown streak reaching the extradiscal line. Beyond the extradiscal line 

 the wing is clear fawn brown, while within the extradiscal line the wing (except on the inner 

 edge) in hoary or gray, much less so in $ than in 9 , with the angle in male well marked. Hind 

 wings colored and marked like the fore wings; no basal line. The extradiscal line broad, straight, 

 dark, and touching the submarginal scalloped line on the inner edge of the wing. This line 

 is made up of six scallops, with dark points between them, the first, fourth, and fifth points 

 three times larger than the second ami third; in the S the points are more nearly equal in size 

 and form a more continuous blackish line, with scattered white scales. 



Beneath slightly paler, but the lines and other markings are as on the upper side though 

 less distinct, and the dark submarginal line is nearly effaced in the middle of the wing away 

 from the costal and inner edge of the wing. Legs: The femora and tibiae dark, like the palpi, 

 but the tarsi are much paler. Abdomen with a row of six lighter oval triangular spots encir- 

 cled with dark on each side. 



Expanse of fore wings, $ 120 mm.; 9 142 mm. 

 Length of fore wings, S 62 mm.; ? 70 mm. 

 Breadth of fore wings, S 30 mm.; $ 36 mm. 

 Length of hind wings, S 46 mm.; <? 47 mm. 

 Breadth of hind wings, S 30 mm.; ? 38 mm. 



One <? from Mexico is most probably this; it only differs in being darker, with all the 

 lines and spots more distinct; it differs chiefly in the extradiscal line in both wings being some- 

 what sinuous. Length of fore wings 60 mm., breadth 33 mm. 



Geographical distribution. — Vera Cruz, Mexico (G. Franck); Jalapa, Mexico; Surinam (very 

 common, Cramer); Venezuela and Brazil (British Mus.). My Mexican one is like Cramer's 

 figure of A. cassandra, the extradiscal line being more wavy, especially that on hind wings. 



Fully fed larva. — The body is entirely unarmed, with no apparent vestiges (in the figure) 

 of the armature of the earlier stages. The body differs from that of Aglia and Cercophana in 

 being elongated, while the outline is that of a generalized or noctuiform larva, the thoracic 

 segments being of normal size, and the larva apparently does not strike the singular attitude 

 of those of Aglia and Cercophana; in fact the larva looks like that of a Cossus. 



The body is dark brown, contrasting with the orange red of the head, prothoracic shield, 

 suranal plate and anal legs, as well as the four pairs of midabdominal legs. Peters describes 

 and figures the fully fed larva as dark gray ringed with black. 



Pupa. — (Sent me as such by Mr. O. Barrett and identified by E. A. Smyth.) 



Stoll figures the adult larva and that of an earlier stage of his A. cassandra, now regarded 

 as a synonym of A. armida. In both stages the body is yellow, with irregular dark markings, 

 but otherwise it is as in his figure of the larva of A. armida. The young larva is armed as in 

 the normal young of A. armida, figured on the same plate. 



The larva spins no cocoon, but pupates 6 inches below the surface of the soil. 



Food plant. — In Nova Friburgo, Brazil, the larva occurs in great numbers on an Anona, 



the genus to which the custard apple belongs ; at Petropolis, Peters often found it " in enormous 



numbers" on the Paineira, Bombax ceiba L. In Surinam it lives on the "Palisade tree" 



(Merian) . 



ARSENURA ASPASIA (Herrich-Schaeffer). 



Arsenura (Rhescyntis) aspasia. Herrich-Schaeffer, Samnil ausser-eur. Schmett., p. 60, fig. 51, 1854. 



Rhesq/ntis aspasia Walker, Cat. Lep. Het. Br. Mus., VI, p. 1326, 1855. 



Arsenura aspasia Peters, Die Heteroceren-Raupeu, p. 9, Larva, Taf. IV, fig. 7; Pupa, 7a, 1898-1901. 



LARVA. 



Peters, Die Heteroceren-Raupen, Taf. IV, fig. 7. 



Judging from Herrich-Schaeffer's figure, this is a larger species than A. armida (expanding 

 170 mm.), but with wings of similar shape; the markings are closely similar; the costo-apical 

 oval mark is larger, but the extradiscal line is nearly the same, though the scallops differ in 

 slight details. It may be found to intergrade with A. armida. 



