ON NEW SOUTU-AMERICAN ARCTIID.E. 



265 



19. New South-American Arctiidse. By J. J. Joicey, 

 F.L.S., F.Z.S., F.E.S., and G. Talbot, F.E.S. 



[Received June 20, 1917 : Read November 20, 1917.] 

 (Plate I.*) . 



Index. 



Systematic : Page 



Idalus Jlavithorax, sp. n 265 



Neonerita metaphoenica, sp. n 265 



Arteomolis nigripuncta, sp. n 266 



Automolis ignivena, sp. u 266 



Automolis ochreogaster, sp. n 267 



Automolis ochreomarginata, sp. n 267 



Glaucostola maroniensis, sp. n 268 



Mel ese flavescens, sp. n 268 



Opharus ochracea, sp. n 269 



Neritos purpureotincta, sp. n 269 



The types of the species herein described are in the collection 

 of Joicey. Our thanks are due to Sir G. F. Hampson for kind 

 help given. 



1. Idalus flavithorax, sp. n. (PI. I. fig. 4.) 

 Nearest favoplaga Schaus. 



(5 . Both sides of fore wing pale purplish brown ; veins white. 

 A large pale-yellow distal costal patch, extending to below vein 4 

 and filling end of cell, its outer edge parallel to margin and as 

 long as its costal edge. Inner margin with a yellow stripe on its 

 outer half, the edge of the stripe curved above the submedian. 

 Hind wing pale yellowish white, costa and margins more deeply 

 tinted. 



Head, thorax, and abdomen ochreous-yellow, three end seg- 

 ments of abdomen above black fringed with grey, below yellow 

 excepting end-segment. Antennae white above, brown below. 

 Palpi greyish-white. Legs white, coxae of fore-legs yellow. 

 Length of fore wing 15 mm. 



llab. S. Brazil, Rio Grande do Sul. A single specimen. 



2. Neonerita metaphcenica, sp. n. (PI. I. fig. 5.) 



Nearest to yahuasaz J. & T., Ann. & Mag. N. H. ser. 8, vol. xviii. 

 p. 54, pi. xiv. fig. 3 (1916) (Peruvian Amazon). 



S . Differs from yahuasce in its smaller size, broader band on 

 the fore iving, and hind tving washed with crimson except over 

 the apical area. Antennae, thorax, and abdomen above crimson, 

 the thorax being much duller with a greyish admixture. Length 

 of fore wing 9 mm. 



Hah. French Guiana, St. Jean du Maroni, 1 <$ . 



* For explanation of the Plate see p. 276. 



Proc. Zool. Soc— 1917, No. XIX. 19 



