ACMEPTEROK— ENANTIA. 181 



the former country by Van Patten, and subsequently taken by Rogers on the slopes of 

 Irazu ; it differs from both A. cinerascens and A. nemesis in having the spots of the 

 primaries and the transverse cross-band of the secondaries of a dull greenish hue. We 

 have a single female of this species which differs widely from that sex of A. nemesis ; 

 not only is the neighbourhood of the inner margin of the primaries almost entirely 

 black, but the secondaries have the base and the outer margin very broadly fuscous. 



4. Acmepteron Ma, sp. n. (Acmeopteron lala, Tab. LXIV. figg. 25, 26 d .) 



A. cinerascenti quoque similis, sed alis multo latioribus, anticis maculis minoribus et posticis litura sub- 

 mediana multo angustiore et virescenti-cinerea (nee grisea) : subtus alis minus pallidis, anticis ad apieem 

 et posticis undique purpureo-argenteo nitentibus, maculis angulum analem versus, angulo anali ipso cum 

 ciliis in margine externo aurantiacis. 



Sab. Guatemala, San Geronimo (Champion). 



Three male specimens taken by Mr. Champion in the neighbourhood of San Gero- 

 nimo are all we know of this distinct species. It appears to be most nearly allied to 

 A. cinerascens, but may be distinguished not only by the form of the transverse band of 

 the secondaries but by the greater width and development of those wings. 



We have figured one of the types from San Geronimo. 



ENANTIA. 



Enantia, Hubner, Verz. bek. Schmett. p. 96. 



Papilio melite of Linnaeus may be taken as the type of this genus of Hiibner's, of 

 which E.jethys and E. albania are typical examples in our country. It differs from 

 both the preceding genera in emitting the first subcostal branch at the end of the cell 

 instead of beyond it. The upper discocellular is short ; the middle discocellular is bent 

 to a large acute angle, the lower section being longer than the upper. The male organs 

 offer no very distinctive characters ; the females of both E. virgo and E. dione have 

 a small spiny chitinous patch in the bursa copulatrix. 



The ten species we place in this genus are not all typical; they may be divided 

 into four sections as follows : — 



a. Lower discocellular of the primaries placed at a small obtuse angle with the 



median 1. jethys. 



2. albania. 



3. mercenaria. 

 4s. morion. 



b. Lower discocellular of the primaries placed nearly in a fine with the median. 



d. Upper discocellular of the primaries very short 5. virgo. 



6. critomedia. 



7. euryope. 



8. oreas. 

 V. Upper discocellular of the primaries comparatively long 9. deione. 



10. eunoe. 



