158 EHOPALOCEEA. 



doptera of Guatemala, Boisduval recognized that his original description of T. mexicana 

 covered two species, and he rightly associated with them their proper females; 

 unfortunately he used the name T. mexicana for the species which neither he nor 

 Geyer figured it under, — the T. boisduvaliana of the present work. The other species 

 he called T. depuiseti. 



Regarding T. damaris, which was based upon a female specimen obtained by Salle in 

 Southern Mexico, we have an example named by comparison with Dr. Felder's type, 

 and we have no hesitation whatever in considering it a female of this species. 



The dark portion of the outer border of the secondaries of the male of T. mexicana 

 is subject to great variation, being narrow and almost confined to the vicinity of the 

 anal angle in some specimens, in others it is large and approaches the end of the cell, 

 and there is a deep fissure where the median nervure runs. Generally speaking the 

 broad-bordered form is prevalent in Mexico and Guatemala, and the narrow one in 

 Northern Sonora ; but both forms occur in Texas, and at Duenas we find the extremes 

 and many intermediate links. 



Terias mexicana seems to occur over nearly the whole of Mexico, at least in the 

 higher grounds, and in such situations it is found throughout Guatemala from 2000 to 

 5000 feet above the level of the sea. Southward of Guatemala, that is to say in Costa 

 Rica, its place is taken by a closely allied species T. bogotana, which differs in wanting 

 the yellow patch over the costal area of the secondaries. 



5. Terias bogotana. 



Terias bogotana, Feld. Wien. ent. Mon. v. p. 84 (partim) l ; Reise d. Nov., Lep. p. 198, t. 26. ff. 3, 4 a . 



Terias chloe, Feld. Eeise d. Nov., Lep. p. 199 3 . 



Sphcenogona mexicana, Butl. & Druce, P. Z. S. 1874, p. 358*. 



S T. mexicancB similis, sed colore flava in regione costali posticaram absente. 



$ mari similis, sed anticis margine externo fuseo angustiore et posticis venis tantum ad apicem fusco tinctis. 



Hab. Costa Rica (Van Patten % Irazu, Cache, Rio Sucio, San Francisco (Rogers) ; 

 Panama, Volcan de Chiriqui, Bugaba (Champion), Chiriqui, Bugaba, Veraguas (Arce). 

 — Colombia 1 2 3 . 



T. bogotana is closely allied to T. mexicana, but in the male the secondaries have no 

 yellow over the costal area, so that the two forms are readily distinguishable. In his 

 first description Felder associated two different species as the sexes of T. bogotana. 

 The supposed male he subsequently separated as T. gaugamela, and figured both in the 

 Zoology of the Voyage of the ' Novara ; ' the latter we are unable to distinguish from 

 T. fabiola. We have a specimen from Costa Rica w T hich has been compared with the 

 type of T. chloe ; this we unhesitatingly place as the female of T. bogotana ; moreover 

 we feel convinced that the specimen described as the male of T. chloe is of the female 

 sex. Sphcenogona mexicana of Butler and Druce, from Costa Rica, belongs here, as the 

 specimens before us show. 



