THECLA. 81 



27. T. ateius section. 



166. Thecla atrius. 



Thecla atrius, Herr.-Schaff. Samml. ausereur. Schmett. p. 55, ff. 53, 54 \ 



Alis anticis brunneo-nigricantibus ; posticis nitidissime caeruleis, margine externo anguste nigro, lobulo 

 anali introrsum rubro : subtus oehraceo-fuscis, linea communi discali nigra extrorsum albo in posticis 

 mtrorsum rubro limbata ad marginem internum angulata, angulo anali rubro, linea argentea transversa 

 bisecta, lobulo anali nigro, macula juxta eum nigra albo atomata, altera inter ramos medianos puncto 

 nigro. 



$ alis multo pallidioribus, colore caeruleo vix obvio. 



Hab. Guatemala, Cubilguitz (Champion); Panama, Bugaba {Champion), Chiriqui 

 (Trbtsch). — South Ameeica to the Amazons valley and Guiana \ 



T. atrius is a well-known species in South America, being apparently common in the 

 Amazons valley, but much more rare in our own country, whence we have only seen one 

 male from Guatemala and two others from the State of Panama. 



167. Thecla mimas, sp. n. (Tab. LVII. figg. 18, 19 d .) 



T. atrio similis, sed alis anticis supra infra cellulam ad marginem internum sicut posticis nitidissime CEeruleis. 



Hab. Panama, Calobre, Veraguas (Arce). — Colombia ; Uppee Amazons. 



A close ally of T. atrius: scarcely differing from it on the underside, but the blue 

 colouring on the upper surface enters the primaries from the inner margin to the cell, 

 thus rendering it easily distinguishable, for in the allied species the primaries are 

 wholly destitute of blue. 



We have four male examples from the State of Panama, one of which we figure. 

 These do not differ materially from Para examples collected by Mr. Bates. 



28. T. sim^ethis section. 



168. Thecla simsethis. 



Papilio simathis, Drury, 111. Ex. Ent. i. t. 1. f. 3 \ 



By this simaethis, Hiibn. Zutr. ex. Schmett. iii. p. 11, ff. 423, 424 2 . 



Alis supra purpureis, costa et margine externo fuscis : subtus pallide viridibus, linea communi discali 

 ferruginea extrorsum late albo limbata ; posticis margine externo late albo dense ferrugineo atomato et 

 introrsum eodem colore limbato, maculis quibusdam ad marginem internum argenteis, lobulo anali 

 ferrugineo. 



2 alis fuscis ad basin vix caorulescentibus, margine externo posticarum et maculis tribus ad angulum analem 

 submarginalibus nigricantibus. 



Sab. Mexico, Tres Marias Islands (Forrer), Cordova (Mmeli), Paso de San Juan 

 ( W. Schaus) ; Guatemala, Central valleys (F. B. G. & 0. 8.) ; Panama, Calobre (Arce). 

 — South Ameeica from Westeen Peeu ; Venezuela and Amazons valley to Guiana 

 and South Beazil ; Antilles, St. Christopher Island 1 . 



This is a widely ranging species, though nowhere common. We have no specimens 

 biol. cente.-amee., Rhopal., Vol. II., September 1887. m 



