XENIADES. 517 



XENIADES, gen. nov. 



We take Papilio orchamus, Cram., a species placed in Calpodes by Watson, as the 

 type of this genus ; it also includes Hesperia chalestra, Hew., and a closely allied 

 form described below. These insects agree with Paraides in the shape of the brand 

 on the primaries in the male, but differ from it in having the outer margins of both 

 wings almost straight to near the tip and the genitalia of the males very dissimilarly 

 formed. All three species have a transverse silvery band crossing the underside of 

 the secondaries, 



The antennae are moderately long, with a stout elongate club, terminating in a 

 long crook. The palpi have the first and second joints densely scaled, the third 

 bluntly conical, very short, and almost concealed. The primaries are rather elongate, 

 pointed at the tip, the outer margin straight to near the apex ; the cell is nearly 

 two-thirds the length of the costa, and greatly produced; the discocellulars are 

 strongly oblique, the upper one twice the length of the lower, the latter slightly 

 shorter than the third median segment ; the lower radial is depressed at the base ; the 

 first branch arises before the middle of the median nervure, the second at some little 

 distance before the lower angle of the cell. The secondaries are produced at the anal 

 angle ; the discocellulars are oblique, and distinct, except at the middle. The body 

 is very robust. The middle tibiae are spined, the hind tibiae with two pairs of spurs. 

 The primaries of the male have a brand formed of three spots, placed as in the genus 

 Paraides, there being an additional short streak beneath the second median segment 

 in X. pteras and X. chalestra. 



Xeniades is confined to Tropical America, two of the species extending into the 



southern part of our region. 



a. Brand on the primaries of the male formed of three pieces. 



l. Xeniades orchamus. (Tab. XOVL fig. 31, <? .) 



Papilio orchamus, Cram. Pap. Exot. t. 155. ff. E, F 1 . 



Calpodes orchamus, Wats. P. Z. S. 1893, p. 105 \ 



Alis fuseis, ad basin pilis ochraceis vestitis, stigmate grisescente; anticis maculis quatuor, una in cellula, tribus 

 in serie obliqua infra earn, ea in medio maxima, punctisque tribus in linea obliqua subapicalibus, flavo- 

 hyalinis ; posticis maculis duabus (interdum una) apicem versus colons ejusdem : subtus ut supra, sed 

 dilutioribus apicibus late rubescentibus, anticis macula subraediana majore et albo notata ; posticis fascia 

 a medio marginis costalis fere ad angulum analem extendente, illic latiore, apicem versus maculis minutis 

 quatuor ornatis, omnibus argenteis ; anticis angulum analem versus et posticis (nisi ad apicem) 

 ciliis albis. 

 § mari similis. 



Hob. Panama, Chiriqui (Trotsch, in mus. Staudinger). —South America to Brazil. 



In Dr. Staudinger's collection there is a specimen of this species from Chiriqui, 

 agreeing with others we possess from various localities in Tropical South America. 

 °biol. & centk.-amer., Rhopal., Vol. II., October 1900. 3 x 



