HELIOPETES. 447 



cellula omnino alba, margins externo a vena subcostali usque ad venam submedianam fuseo (area utrinque 

 ad venam radialem alba excepta), lunulis tribus albidis submarginalibus notato, ciliis albis ad termines 

 venarum fuscis ; corpore supra fusco, subtus albo ; palpis subtus albis, segmento terminali nigro. 



Hab. Mexico, Lake Chapala (W. B. Richardson), Dos Arroyos, Rio Papagaio, 

 Acapulco, Rincon, all in Guerrero (H. II. Smith), Cordova (Rumeli), Atoyac (H. H. 

 Smith), Tehnantepec (Scudder x ) ; Guatemala (Scudder 1 ), San Geronimo (Champion) ; 

 Honduras, San Pedro Sula (Wittkugel, in mus. Staudinger). — Colombia 2 ; Brazil 3 . 



Having one of Mr. Scudder's types of his L. nivea before us, and specimens of 

 L. orbigera and L. nivella named by Mons. Mabille from Dr. Staudinger's collection, 

 we have no hesitation in referring them to the same species, which would bear 

 Mr. Scudder's name, as it has many years' priority, had not the specific name been 

 long ago used by Cramer for the species now known as H. arsalte (Linn.). Our 

 specimens of H. nivella are mostly from Western Mexico, where Mr. Herbert Smith 

 found it in some numbers ; but it is not confined to that district, for we have a few 

 examples from the State of Vera Cruz and others from Guatemala. 



On the upperside H. nivella is not unlike H. macaira, but beneath the secondaries 

 are much less heavily marked, and in the latter the wide dark border of the secondaries 

 is, as a rule, unbroken. The two species must be closely allied, as there is practically 

 no difference in their male genitalia. These in II. nivella show a tegumen ending in a 

 simple arched rod ; the scaphium is well developed ; the harpes are cleft at the end, 

 the lower lobe narrow and curved inwards with a few prominent teeth at the end, the 

 upper lobe is wide and rounded at its extremity. (See Tab. XC. fig. 24.) 



6. Heliopetes macaira. 



Pyrgus macaira, Reak. Pr. Ac. Phil. 1866, p. 334 \ 



Syrichtus oceanus, W. H. Edw. Trans. Am. Ent. Soc. iii. p. 213 2 . 



Leucochitonea locutia, Hew. Ex. Butt., Leucochitonea, t. 2. ff. 19, 20 (1875) 3 ; Plotz, Stett. ent. 



Zeit. 1885, p. 39 4 . 

 Heliopetes locutia, Wats. P. Z. S. 1893, p. 64 5 . 



Prseeedenti similis et alis supra haud distinguendus ; subtus posticis omnino saturatioribus, margine externo 

 fusco integro. 



Hab. North America, Arizona 2 . — Mexico, Mazatlan (H. Edwards), San Bias ( W. B. 

 Richardson), Rincon in Guerrero (H. H. Smith), near Vera Cruz ( W. II. Edwards 1 ), 

 Jalapa (F. JD. G., M. Trujillo), Orizaba (coll. Reakirt ^, Cordova (Rumeli), Atoyac 

 (II. H. Smith) ; Guatemala, Polochic Valley (F. I). G. & 0. S.), Chacoj, San Geronimo, 

 Dueiias, Zapote (Champion); Costa Rica, Cache, San Francisco (Rogers); Panama 4 

 (ArcS), Taboga I. (67. Mathew 3 ). 



There can be little doubt that the names given above all apply to one species, which 

 must take Reakirt's title P. macaira, being the oldest. Mr. Edwards's S. oceanus was 

 based upon an Arizona specimen and Hewitson's on one from Panama. Our series 



