130 EHOPALOCERA. 



Rio Gatun 5 {Bible), Tole, San Feliz (Champion), Veraguas (Arce), Lion Hill Station 

 (M'Leannan). — Colombia; Venezuela 1 . 



There is no perceptible difference that we can trace in the males of this insect, the 

 type of which, as well as that of the female, came from Venezuela ; the females differ 

 considerably, but apparently without definite reference to locality. Thus we have a 

 female from Costa Rica hardly differing from the Venezuelan type, but in another 

 example from the same country, the type of Mr. Butler's M. alethina, the secondaries 

 are without the dark discal band ; a female from Nicaragua has no black spot in the 

 primaries between the median vein and its second branch ; the base of these wings in 

 Chiriqui examples is almost wholly black, the inner margin being more or less edged 

 with rufous. The specimen, however, from San Feliz has a long cellular streak of that 

 colour, but this specimen was sent together with one of the ordinary Chiriqui type. 

 In pattern the females resemble Tithorea helicaon, Melincea scylax, &c. 



In Ecuador, the Amazons valley, and South Brazil a close ally of P. malenha is 

 found in P. pyrrha, the males of which can be distinguished by having a broader 

 margin to the secondaries. The females, too, have a conspicuous yellow transverse 

 patch on the primaries. If P. malenka were divided according to the coloration of 

 the females alone the specimens before us would have to be separated into at least 

 five forms, a course which does not recommend itself to us, and we prefer to consider 

 the species a variable one. 



The range of this butterfly extends from Nicaragua through Costa Rica to the State 

 of Panama, and thence to Northern Colombia and Venezuela. It is a lowland species, 

 occurring on the line of the Panama railway and elsewhere not much above the sea- 

 level. 



The female figured is from Chiriqui, and agrees with typical specimens of P. ostro- 

 lenJca, Staud. 



b. Subcostal nervure of the primaries with three branches, the third rudimentary in 



one or both sexes. 



a!. First subcostal branch emitted before, the second at the end of the cell. 



2. Pieris protodice. 



Pieris protodice, Boisd. & Lee. Lep. Am. Sept. p. 45, t. 17. f£. 1-3 1 ; Strecker, Cat. Butt. N. Am. 

 p. 76 2 . 



Alis albis; anticis macula ad cellulae finem, altera bifida apicem versus, tertia infra earn inter venam 

 medianam et ramum suum secundum, quatuor fere obsoletis ad apicem ipsum, macula quoque inter 

 venam submedianam et ramum medianum primum angulum analem versus fuscis, omnibus plus minusve 

 indistinctis : subtus fere ut supra sed maculis majoribus.' 



$ albidis, ad basin pallide fuscis; anticis macula ad cellulae finem, altera in margine interno angulum 

 analem prope, serieque duplici ad apicem et in margine externo posticarum confluentibus coloris ejusdem : 



