PAMPHILIDI: ERYNNIS SASSACUS. 1641 



Table of species, based on the imago. 



Upper half of fore wings above, except the outer margin, almost wholly tawny; in the female 

 the whole upper surface of all the wings with tawny and dark colors in aliout equal measure; 

 upper organ of male abdoiriinal appendages very strongly arched and bent, so that the prox- 

 imal and distal portions are nearly at right angles. 

 Under surface of hind wings with a scarcely perceptible, irregular, mesial band of nearly 

 uniform spots; hook and lateral arms of upper organ of male abdominal append- 

 ages separated by a deep cleft, about half the length of the horizontal portion of the 

 organ ; hook slender, as viewed from above ; two principal teeth at apex of clasp widely 



separate sassacus. 



Under surface of hind wings with an irregular mesial band, composed of conspicuous spots, 

 seldom uniform; hook and lateral arms of upper organ of male abdominal appendages 

 separated by a slight cleft, not one-quarter the length of the horizontal portion of the 

 organ ; hook very stout as viewed from above ; the principal teeth at apex of clasp approxi- 

 mate manitoba. 



Upper half of fore wings above almost wholly dark brown; in the female the whole upper sur- 

 face of all the wings almost entirely dark brown, any tawny tints that may be present being 

 altogether inconspicuous, and mostly confined to reflections ; upper organ of male abdominal 

 appendages well arched, but not bent. 

 Extra-mesial band of under surface of hind wings composed of large, angular, confluent 

 spots, forming a bent series whose outer limits are very irregular from the tongues of 



white w'hich follow down the uervures metea. 



Extra-mesial band of under surface of hind wings composed of very small, roundish, wholly 

 independent spots, arranged in a bent or curved series attalus. 



GROUP I (comma). 



Tawny butterflies ; the hook of the antennae is long drawn out and slender, tapering 

 very gently, but originating abruptly from the club ; median nervure first forking 

 almost as near the base of the wing as the subcostal fork; upper organ of male ab- 

 dominal appendages very strongly arched and bent, so that the basal and apical parts 

 lie at right angles. 



Species : sassacus, manitoba. 

 ERYNNIS SASSACUS.— The Indian Hesperid. 



[Orange brown skipper butterfly (Abbot); pale spotted skipper (Mayuard).] 



Hesperia sassacus E.a.n-., Ins. inj.y eg., Sd 98-99 (1884) ;—Mayn., Butt. N. Engl., 60, pi. 



ed., 315 (1862) ;— Morr., Syn. Lep. N. Avner., 6, figs. 93, 93 ab (1886). 



110-111 (1862). Isoteinon sassacus Hew., Cat. coll. diurn. 



Famphila sassacus Kirb., Syn. catal. Lep., Lep., 228 (1879). 



599 (1871) ;— Scudd., Syst. rev. Am. butt., 56 Papilio Abb., Draw. Ins. Geo. Br. 



(1872) ; Mem. Host. soc. nat. hist., ii : .346-347, Mus., vi : 95, figs. 141-143 (ca. 1800). 



pi. 10, figs. 5, 6; pi. 11, figs. 9, 12, 14 (1874) ;— 



French, Rep. ins. III., vii: 159 (1878); Butt. Figured also by Glover, 111. N. A. Lep., pi. 



east. U. S., 305-306 (1886) ;— Fern., Butt. Me., 23, fig. 3, ined. 



The plumed insects swift and free, 

 Like golden boats on a sunny sea. 

 Laden with light and odour, which pass 

 Over the gleam of the living grass. 



Shelley.— TVie Sensitive Plant. 



And the mad world still dances heedless on 

 After its butterflies. 



Lowell. 



Imago (10 ; 13, 16). Head covered with mingled deep greenish yellow and blackish 

 hairs, tbe former much in excess, the tufts at the outer and inner base of the antennae 

 mingled tawny and black ; scales beneath and encircling the head pale greenish yellow ■ 

 palpi rather deep greenish yellow, deepening in tint toward the tip and assuming more 



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