TERIAS. 159 



In Costa Rica and the State of Panama T. bogotana seems to be as abundant as 

 T. mexicana is in Mexico and Guatemala, thence it passes southwards into Colombia. 

 Mr. Champion's specimens from the State of Panama were taken at elevations varying 

 from 1000 to 6000 feet. 



6. Terias boisduvaliana. (Tab. LXIII. figg. 1, 2 e , 3, 4 $ .) 



Terias boisduvaliana, Feld. Reise d. Nov., Lep. p. 200 (<J) \ 



Terias ingrata, R. Feld. Verh. zool.-bot. Ges. Wien, 1869, p. 465 2 . 



Terias gratiosa, Reak. Proc. Ent. Soc. Phil. ii. p. 359 3 . 



Terias mexicana, Boisd. Sp. Gen. i. p. 655 (c?) 4 ; Lep. Guat. p. 11 5 . 



<$ alis flavis, margine extern o late fusco, introrsum praesertim ad medium valde sinuato ; posticis quoque fusco 



late limbatis, introrsum cellulam versus valde dentatis et costam versus aurantio tinctis : subtus pallide 



flavis, posticis sparsim et indistincte ferrugineo maeulatis. 

 $ mari similis, sed dilutioribus et apicibus tantum fuscis (posticis interdum vix tinctis) : subtus anticis costa 



et apice et posticis omnino rosaceo irroratis. 



Eab. Mexico 1 , Ventanas, Presidio, Tres Marias Islands (Forrer), La Venta, Rio 

 Papagaio, Tierra Colorada, Rincon, Tepetlapa, Dos Arroyos, Acaguizotla, Venta de 

 Zopilote (II. H. Smith), Potrero (Iledemann 2 ), Cordova (Rihmeli), Atoyac, Teapa 

 (H. H. Smith), Valladolid in Yucatan (Gawner); British Honduras, Corosal (Roe); 

 Guatemala, Zapote, San Geronimo (Champion), Central and Motagua valleys, Choctum, 

 Pacific slope (F. I). G. & O. S.) ; Honduras (Zcettling 3 ), San Pedro ( Whitely) ; 

 Nicaragua; Costa Rica, Irazu, Cache, San Francisco (Rogers). 



This species was first described by Boisduval as the male of his T. mexicana, and with 

 it was associated as its female the male of another species, to which we now restrict the 

 name T. mexicana. In 1870 Boisduval referred the name T. mexicana to the present 

 species, and called the other T. depuiseti ; but the year before Rudolph Felder had 

 named this species T. ingrata. Unfortunately the latter author overlooked the note 

 in the Lepidoptera of the Voyage of the ' Novara,' where Boisduval's male T. mexicana 

 was named T. boisduvaliana, a name which we think it right to adopt. It is readily 

 distinguishable from the true T. mexicana by the yellow colour of the wings ; but the 

 two species are somewhat alike both as to the width and the outline of the dark border 

 to the wings. Its true relationship, however, is with T. gratiosa rather than with 

 T. mexicana, which takes its place in the State of Panama. 



The range of this species is wide, and extends from the Mexican States of Sinaloa 

 and Durango southwards through Guatemala to Nicaragua and Costa Rica. It is found 

 from the level of the sea at Mazatlan to an elevation of 3000 feet in Guatemala. 



Terias boisduvaliana varies more in size than any of the allied species ; the smallest 

 specimens in our possession are from the Tres Marias Islands and the neighbourhood of 

 Mazatlan, but our series from other localities includes examples hardly larger. 



We have figured a male and female from Rincon in Guerrero, taken by Mr. H. H. 

 Smith in October 1888. 



