134 KHOPALOCERA. 



tolerably common the female is seldom seen. It is for the most part a lowland species, 

 occurring on both sides of the mountain-range of Guatemala up to an elevation of 3000 

 feet. 



We have figured a male from Yzabal and a female from Chuacus in the valley of 

 the Motagua, Guatemala. 



7. Pieris laogore, sp. n. 



P. viardi similis, sed subtus striis aurantiis (nee sulphureis). 

 2 P. viardi feminse simillima, sed supra maculis et lineis omnibus aurantiis (nee sulphureis). 



Eab. Mexico, Dos Arroyos in Guerrero (H. H. /Smith), Oaxaca (Fenochio). 



Mr. Smith secured a single female of this species at Dos Arroyos in the month of 

 September 1888, and with it we now associate a male from Oaxaca which has long been 

 in our collection under the name of P. viardi. The female may readily be distinguished 

 from that sex of P. viardi by the colour of the spots being orange instead of sulphur ; 

 they are, however, precisely of the same shape and position as in the allied species. In 

 the male the differences are exceedingly slight, the striae on the under surface alone 

 being orange instead of sulphur. 



The species appears to be confined to Western Mexico. In Guatemala P. viardi is 

 found on both sides of the Cordillera. 



8. Pieris noctipennis. (Tab. LXII. figg. 5, 6 s , 7 $ .) 



Pieris noctipennis, Butl. & Druce, Cist. Ent. i. p. Ill l ; P. Z. S. 1874, p. 361 4 ; Butl. Lep. Exot. 

 p. 118, t. 43. f. 7 3 . 



Alis albescentibus, anticis costa anguste et apice cum margine externo (hac decrescente angulum analem 

 versus, et introrsum sinuato) nigro-f uscis, maculis duabus ad apicem albis ; posticis anguste i usee- limbatis : 

 subtus anticis fere ut supra, sed colore fusco ad apicem dilutiore et flavo tincto ; posticis f uscis, area diseali 

 pallidiore, striga in costa maculisque in margine externo flavis, maculis binis ad basin rubro-aurantiis. 



5 anticis mari similis, sed colore fusco ad apicem latiore per marginem internum et ad basin extensa; posticis 

 f uscis, punctis duobus ad apicem albis, area interna anticarum interdum flavescente nee alba. 



Hob. Costa Rica ( Van Patten 1 2 3 ), Cache (Rogers) ; Panama, Chiriqui, Calobre, 

 Veraguas (Arce), Bugaba [Champion). 



Though the male of this species much resembles that sex of P. locusta, the female 

 may readily be distinguished by the secondaries being of a uniform brownish-black 

 colour, hence Mr. Butler's name. Its range includes the southern portion of our 

 country, Costa Rica and the State of Panama ; it is a lowland species, Mr. Champion's 

 specimens having been taken at Bugaba. 



We have only males of Felder's P. locusta, and base our comparison between its 

 female and that of P. noctipennis from the description of the former. There are other 

 forms of this Pieris in South America which we have not yet satisfactorily determined ; 

 an accurate knowledge of the sexes of each is necessary for their proper comprehension. 



