428 EHOPALOCEEA. 



THEAGENES, gen. nov. 



Similar to Anisochoria, and with similar long porrect palpi, the terminal joint of 

 which is hardly so much depressed. The primaries differ in having the costa concave 

 towards the apex, in the apex being more truncate and even slightly concave towards 

 the extreme tip, the lower portion of the outer margin and the inner margin are also 

 concave ; there is also a distinct costal fold. The secondaries have a more rounded 

 apical angle, and the anal angle is rather more prominent. The male genitalia have 

 distinctly asymmetrical harpes. 



Two species belong to this genus, one of them being the well-known Helias albiplaga, 

 Felder, having a range extending from Colombia to Bolivia ; the other is the nearly 

 allied Antigonns cegides, Herr.-Sch., a species of wide range in Southern Mexico and 

 Central America, but which does not pass outside our limits. 



1. Theagenes aegides. (Eropus cegides*, Tab. LXXXVIII. figg. 27, 28, 29 6 .) 

 Antigonus agides, Herr.-Sch. Prodr. hi. p. 49 (1869) 1 ; Plotz, Jahrb. nass. Yer. xxxvii. p. 23 2 . 



Alis fuscis anticis medialiter griseo atomatis et lineis indistinctis angustis transversim f'asciatis, puncto unico 

 ad apicem hyalino ; posticis plaga magna mediana alba notatis : subtus anticis plaga magna ochracea, basi, 

 costa (anguste) et apice fuscis, hoc griseo irrorato, puncto hyalino ut in pagina superiore ; posticis 

 undique fusco lineatim marmoratis, ad medium alee fere albis ; palpis subtus griseo-albidis, tibiis posticis 

 cirratis et bis bicarinatis. 



5 mari similis, anticis plica costali nulla nee tibiis posticis cirratis. 



Hah. Mexico, Jalapa (F. D. G.), Orizaba (77. J. Elwes), Atoyac, Vera Cruz 

 (H. II Smith) ; Guatemala 2 , Polochic and Chixoy Valleys, Duenas (F. D. G. & 0. S.) 9 

 Senahu, San Geronimo, Zapote {Champion), Volcan de Santa Maria ( W. B. Bichardson) ; 

 Costa Bica, Irazu (Bogers) ; Panama, Chiriqui (Arce), Volcan de Chiriqui, Bugaba 

 (Champion). 



This species is a close ally of T. albiplaga (Feld.), but may be distinguished on the 

 upperside by the larger size of the conspicuous white patch on the middle of the 

 secondaries, and on the underside by the more linear and even mottling of those 

 wings, the lighter portions of which reach from the middle of the wing nearly to the 

 costa. In T. albiplaga there is a subtriangular white patch definitely separated from 

 the costa by a wide dark border. 



T. cegides was very imperfectly described by Herrich-Schaffer, but was discriminated 

 from T. albiplaga by Plotz, who assigned it to Guatemala : and this determination of 

 Herrich-Schaffer's name we accept. 



The range of T. cegides is spread over the whole of Central America from the Line of 

 the Panama Eailway northward. It occurs also in the Mexican State of Vera Cruz on 

 the eastern slope of the mountains. 



* Since our Plate was drawn and lettered, Mons. Simon has used the name Eropus for a genus of Nitidulidse 

 (Ann. Soc. Ent. Pr. 1895, p. 162). 



