EUDAMUS. 277 



V. The spot between the median nervure and its second branch large and subquadrate. 



c". Tails long. 



c'". Secondaries without any white patch beneath, and without a distinct dark 



subtriangular spot near the apex of the primaries. 



6. E. proteus section. (Typical.) 



10. Eudamus proteus. (Tab. LXXV. fig. 5c?.) 



Papilio proteus, Linn. Mus. Ulr. p. 333 1 ; Syst. Nat. i. p. 794 2 ; Clerck, Icon. Ins. t. 42. f. 1 3 . 



Urbanus fortis proteus, Hiibn. Samml. ex. Schm. i. t. 155 4 . 



Goniurus proteus, Butl. & Druce, P. Z. S. 1874, p. 366 6 ; Plotz, Bull. Soc. Imp. Mosc. lv. No. 3. 



p. 11 6 . 

 Eudamus proteus , Scudder, Butt. New Engl. ii. p. 1386 7 . 



Alis murinis ad basin viridibus aureo nitentibus, ciliis albidis fusco interruptis ; anticis maculis quatuor in 

 linea transversa positis, quinta ultra eas subquadrata et punctis tribus ad apicem semihyalinis : subtus 

 pallidioribus, squamis ochraceis sparsim notatis ; anticis fusco nebulosis, posticis lineis duabus fuscis trans- 

 versis interiore per cellulam ad costam nonnunquam disrupta, nonnunquam integra, exteriore integra ; 

 plica costali obvia. 



Var. a. Fascia transversa interna posticarum subtus ad costam disrupta. (E. proteus forma typica.) 



Eab. North America, Southern States 7 . — Mexico, Mazatlan, Milpas (Forrer), Lake 

 Chapala and State of Jalisco {Richardson), Xucumanatlan, Rincon, Acaguizotla, Dos 

 Arroyos, Omilteme, all in Guerrero (E. E. Smith), Cordova (Rilmeli), Orizaba 

 ( E. J. Elwes), Jalapa (Trujillo), Coatepec and Paso de San Juan (Schaus), Atoyac 

 (H. E. Smith) ; Guatemala, San Geronimo (F. D. G. & 0. S., Champion), Duerias, 

 Zapote (Champion) ; Nicaragua, Chontales (Belt, Janson) ; Costa Rica (van Patten 5 ), 

 San Francisco, Cache (Rogers) ; Panama, Chiriqui and Calobre (Arce), Lion Hill 

 (McLeannan). — South America generally to the Argentine Republic ; Antilles. 



Var. 6. Fascia transversa interna posticarum subtus lata ad costam integra. 



Eab. Mexico, Mazatlan (Forrer), Venta de Zopilote in Guerrero (H. H. Smith), 

 Cuesta de Misantla (Trujillo), Orizaba (H. J. Elwes) ; Guatemala, Chisoy and Polochic 

 Valleys (F. J). G. & 0. S.), San Geronimo, Duenas, Zapote (Champion) ; Honduras 

 San Pedro (67. M. Whitely); Costa Rica (van Patten), Irazu, Cache (Rogers). — South 

 America to Peru. 



Apart from E. esmeraldus, which is examined below, E. proteus presents itself in 

 two forms almost wherever it is found. In one, the typical form, the inner of the two 

 dark bands of the secondaries beneath is split up near the costa into two isolated spots, 

 which lie just below the costal nervure. In the other this band is entire and widens out 

 on reaching the costal nervure, and at most shows a small cleft along its costal border. 

 This difference is not sexual, as we have males of both forms. As these present no 

 difference in their male genitalia, we do not think they can belong to different species. 



E. proteus is. one of the commonest of the HesperiidEe in Tropical America, and is 



