DIORHINA. 391 
A very abundant widely ranging species over the northern parts of South America, 
and in our country found as far north as British Honduras and Guatemala, but in 
the latter countries, as indeed throughout Central America, it is by no means so common. 
The name D. periander was founded by Cramer upon a female specimen which we 
have no difficulty in recognizing. Central-American males have an incipient median 
white band on the secondaries; this can also be traced to a less extent in southern 
examples. It is not a character of specific value. 
The alliances of D. periander are with D. psecas and D. dysoni, but it has many 
points of distinction ; with the former it is compared below. 
2. Diorhina psecas. 
Erycina psecas, Saund. Trans. Ent. Soc. v. p. 219, t. 20. f. 4, 4a’. 
Diorhina psecas, Bates, Journ. Linn. Soc. Zool. ix. p. 429”. 
D. periandro similis, sed alis ceerulescentioribus et albido distincte bifasciatis, posticis fascia arcuata transversa 
punicea ad angulum analem ; subtus nigricantioribus fasciis, pure albis, anticarum costa multo minus 
coccinea, posticis macula ut supra pure coccinea distinguenda. 
@ alis fuscescentibus vitta obliqua ab angulo posticarum anali extendente et macula supra eam coccineis ; 
subtus fere omnino ut supra. 
Hab. Panama, Volcan de Chiriqui (Champion).—Sovtn America, Colombia to Bolivia? 
and to Guiana. 
Mr. Champion captured two male specimens undoubtedly belonging to this species 
on the slopes of the Volcan de Chiriqui. These are the only Central-American 
examples of it we have seen. In South America it has a wide range, the original types 
having come from Perut. 
8. Diorhina butes. 
Papilio butes, Linn. Syst. Nat. i. p. 794°; Clerck, Icon. Ins. t. 46. f. 6°, 
Diorhina butes, Bates, Journ. Linn. Soc. Zool. ix. p. 429°. 
Papilio licarsis, Fabr. Gen. Ins. p. 271 *. 
Erycina licarsis, Morisse, Ann. Ent. Soc. Fr. 1887, p. 419, t. 14.f.1,2°; Butl. Ent. Monthl. Mag. 
iii. p. 53°. 
Papilio rhetus, Cram. Pap. Ex. t. 63. f. C’. 
Rhetus crameri, Sw. Zool. Ml. ser. 2, i. t. 33°. 
Diorhina thia, Morisse, Ann. Ent. Soc. Fr. 1837, p. 419,t. 14. f. 8,4°; Bates, Journ. Linn. Soc. 
Zool. ix. p. 430”. 
Alis fusco-nigris, albo bifasciatis ; anticis ad coste basin coccineis, posticis parte distali nitide ceruleis valde 
productis, ad angulum analem coccineis et ultra vitta transversa albida; subtus ut supra, colore ceruleo 
absente ; thorace ceruleo, abdomine utrinque coccineo lineato. 
© mari similis, sed alis supra colore cxruleo absente, posticis magis productis. 
Obs. A D. psecas statura minore et posticis valde productis differt. 
Hab. Mexico’, Cordova (Riimeli), Oaxaca (Fenochio), Valladolid in Yucatan 
(Gawmer); Brrvish Hoypuras, Corosal (Roe); GUATEMALA, Cubilguitz (Champion), San 
Gerénimo, Polochic valley (F. D. G. & 0. 8.); Panama, David (Champion).—SovurTa 
America, Colombia to South Brazil °. 
