OXYNTHES. 527 



OXYNTHES, gen. nov. 



The single Tropical- American species referred to this genus, Goniloba corusca, H.-S. 

 (=Proteides martins, Mab.), we had at first placed under Niconiades, from which it 

 differs in the following points : — The lower radial nervure of the primaries arises from 

 close to the lower angle of the cell, the third median segment thus being very short (in 

 Niconiades the lower discocellular is nearly as long as the third median segment) ; the 

 secondaries are, at most, very feebly lobate in the male, not extending beyond the apex 

 of the abdomen, in the female almost rounded at the anal angle ; the lower portion of 

 the brand on the primaries in the male is transverse (instead of running along the 

 upper edge of the submedian nervure, as in Niconiades)', the genitalia of the male are 

 dissimilarly formed. 



The antennae and palpi are formed as in Niconiades. The primaries are almost 

 pointed at the tip ; the cell is nearly two-thirds the length of the costa ; the disco- 

 cellulars are strongly oblique, the lower one extremely short; the lower radial is 

 greatly depressed at the base, and arises from close to the lower angle of the cell ; the 

 first branch arises considerably before the middle of the median nervure, the second not 

 far from the lower angle of the cell. The secondaries are very feebly lobed at the anal 

 angle, not extending beyond the abdomen in either sex. The middle and hind tibiae are 

 spined ; the latter have two pairs of spurs. The body is robust. The primaries of 

 the male have a brand formed of three portions : (1) a triangular piece filling the 

 angle between the base of the second median segment and the first median branch ; 

 (2) a short longitudinal streak just below this; (3) a short transverse piece extending 

 from the submedian nervure towards the one above it. 



0. coruscus, like some of the species of Niconiades, has a transverse white band on 

 the secondaries beneath. 



1. Oxynthes coruscus. (Tab. XCVIL figg. 30-33, * .) 



Goniloba corusca, Herr.-Scb.aff. Prodr. Syst. Lep. iii. p. 72 \ 



Proteides martius, Mab. Le Nat. 1889, p. 127, f '. 2 ( $ ) \ 



Alis fuscis, ad basin cum capite et corpore supra virescentibus, stigmate grisescente, costae dimidio basali 

 squamis flavis notato, macula duplici in cellula, tribus infra earn, una parva in venam submedianam, 

 secunda inter ramos medianos primum et secundum maxima, extrorsum excavata, tertia ultra earn, 

 punctisque tribus in linea transversa, omnibus albo-hyalinis : subtus multo pallidioribus, anticis costae 

 dimidio basali ochraceo, linea curvata supra venam submedianam albida ; posticis fascia recta a costae 

 medio angulum analem versus extensa alba, linea brevi coloris ejusdem ab angulo ipso venam sequente : 

 abdomine subtus ochraceo. 



$ mari similis. 

 Hal. Mexico, Dos Arroyos in Guerrero (H. H. Smith) ; Panama, Chiriqui (mus. 



Staudinger 2 ).— South America to Brazil. 



Of this species we possess only a worn female from Central America, but we have 

 seen a second in Dr. Staudinger's collection. It is very like Niconiades xanthaphes, 



3y2 



