THECLA. 29 



and five females ; from these we note there is no practical distinction in colour between 

 the sexes. This is otherwise in T. wgiades, in which the sexes present the usual 

 differences. A specimen from Irazu is figured. 



4. An alar stigma ; wings beneath sooty. (Species 40, 41.) 

 a. A single secondary filament ; secondaries beneath mottled with black. 



40. Thecla parthenia. (Tab. LI. figg. 17, 18 c? .) 



Thecla parthenia, Hew. 111. Diurn. Lep. p. 174, t. 68. ff. 502, 503 \ 



<J alis lsete caeruleis, anticis costa et dimidio apicali nigris, stigmate fusco ad eellulse fiiiem ; posfcicis costa et 

 margine externo anguste nigris : subtus fuliginosis, linea communi discali brunnea extrorsum pallide 

 fusco limbata in posticis ad marginem internum profunde angulata, lineola duplici ad cellularum fines 

 brunnea, macula infra venam costalem nigricante, lobulo anali umbrino-brunneo. 



5 nobis ignota. 



Eab. Guatemala, Polochic valley (F. D. G. &. 0. S.) ; Nicaeagua, Chontales {Belt 1 ). 



We have two specimens of this beautiful species (one of which we figure), both 

 taken in the Polochic valley by our collectors ; these agree fairly with the type of 

 T. 'parthenia in the Hewitson collection, which, however, is in very bad condition. 

 Hewitson speaks of his type having a washed-out appearance ; this is entirely due to 

 the abrasion of the scales of the wings, of which they are nearly destitute. 



j3. Two secondary filaments ; secondaries beneath with transverse black lines. 



41. Thecla theia. (Tab. LI. figg. 19, 20 <* , 21 ? .) 



Thecla theia, Hew. Equat. Lep. p. 60 1 ; 111. Diurn. Lep. p. 172 2 . 

 Thecla athesa, Hew. 111. Diurn. Lep. t. 68. ff. 493, 494 3 . 



<? alis nitide cyaneis ; anticis costa, margine externo et apice nigris, stigmate ad cellulae finem fuliginoso ; posticis 

 apice anguste et margine externo nigris, ciliis omnibus nigerrimis : subtus fuliginosis ; anticis lineis quatuor 

 ultra cellulam transvittatis et una brevi per cellulae medium nigris ; posticis lineis quatuor transfasciatis, 

 intima ad angulum analem bene refracta, linea altera per cellulae medium et una brevi ad finem, nigris, 

 maculis tribus cervinis ad angulum analem. 



§ mari similis, sed major, alarum marginibus et apicibus latius nigricantibus ; subtus multo pallidioribus, lineis 

 transversis nigris magis obviis. 



Hab. Panama, Volcan de Chiriqui (Champion, Ribbe). — Venezuela; Ecuadok 1 ; 

 Bolivia 2 . 



Hewitson' s description of this species was based upon Ecuadorian and Bolivian 

 specimens. We have two examples said to be from Venezuela ; with these a pair from 

 the State of Panama (both of them figured) agree very closely, and show that, rare as 

 this species is, its range is very extensive. The lines on the under surface of the wings 

 suggest a relationship between this species and T. laothoe; but T. theia has distinct 

 brands on the primaries, and we doubt if there is any real affinity. 



