AMERICAN LEPIDOPTERA. 3 



rate, elongate, above entirely black, but beneath only terminally so; 

 the terminal booklet is short, and carried at right angles with the an- 

 teunal stem. Legs, obscure olivaceous, paler within, hind femora with- 

 two pair of very slight, sub-equal spurs. 



Wings, above, glossy olivaceous blackish, immaculate; anterior pair 

 slightly produced at apices, moderately straight along external margin; 

 the costal region is somewhat elevated, and, superiorly, the wing is a 

 little wrinkled ; there is a faint and variable yellowish-brown reflection 

 equally distributed; fringes, pale, immaculate; posterior wings, rounded 

 along external margin, straight along internal margin, so that the anal 

 angle, without projecting, is yet acute; the coloration as on primaries; 

 fringes, pale, immaculate. 



Under surface of wings, shaded with lustrous golden brown scales. 

 Anterior pair, dull olivaceous blackish, shaded with somewhat pale gol- 

 den brown scales superiorly and terminally ; fringes as on upper sur- 

 face. Posterior wings, evenly covered with pale golden brown scales, 

 except for an inwardly, straightly defined, longitudinal space before in- 

 ternal margin, which is dull olivaceous blackish; fringes as on upper 

 surface. 



Female. — Resembles the male ; the wings are less produced at the 

 apices and angles ; the yellowish shades among the palpal and caputal 

 scales in the male, are paler and whitish, as is also the inferior thoracic 

 and abdominal squamation. 



Expanse, S and 9 , 1.05 inch. Length of hodj/, % , 0.55, 9 , 0.50 

 inch. 



Habitat. — Atlantic District. (Georgia! Ridings; Florida I Linden.) 



We have examined one female and three male specimens of this 

 small species, which may be recognized by its immaculate wings and 

 dull obscure coloration, hardly relieved by the golden brown scales of 

 the under surface. 



Hesperia alternata. n. sp. 



Female. — Head, thorax and abdomen, above, olivaceous blackish ; 

 laterally, the thoracic parts are furnished with long olivaceous hair, 

 which covers the abdomen at base. Beneath, the palpi are clothed 

 with whitish and mixed dark scales, and the eyes are bordered inferi- 

 orly with pale scales ; the thoracic parts are somewhat loosely clothed 

 with cinereous or slate-ashen hair, which becomes somewhat whitish 

 between the anterior femora; abdomen, sprinkled with grey scales, 

 which form incomplete segmentary bands, narrowly fringing the infe- 

 rior edges of the abdominal segments laterally, and continued obso* 



