300 NORTHERN ZOOLOGY. 



DESCRIPTION. 



Wings above silvery-blue, terminating, especially at the posterior margin, in a very slender black 

 line : fringe white barred with black : primaries underneath ash-coloured mottled with white ; in 

 the disk is a black crescent and a curved macular band, consisting of, mostly, oblique black crescents 

 edged with white, especially on their under side; the wing terminates posteriorly in a broadish, 

 brown band, formed chiefly by obsolete eyelets: the secondaries are brown; underneath spotted and 

 striped with black and white ; towards the posterior margin the white spots are arranged in a trans- 

 verse band parallel with it ; and, as in the primaries, the wing terminates in several obsolete eyelets. 



Family HESPERIAD^. Hesperiadam. 



CLXXXVII. Genus HESPERIA. Fab. 



(420) 1. * Hesperia Peckius. Pedis Hesperia. 



H. f Peckius J fusca, alis supra fascia communi articulata angulata ; semndariis subtus macula magna didyma, fateo-pallidis. 

 Peck's Hesperia, brown, wings above with an angular band common to both; secondaries underneath with a large, didy- 

 mous, irregular spot ; both of pale yellow. 



PLATE IV, FIG. 2, 3. 



Expansion of the wings 1 inch and ^ a line. 



Taken with the preceding, and also by Professor Peck. 



DESCRIPTION. 



Body brown, paler on the under side. Antenna; rufous above, below the joints have a patch of 

 white scales : knob fusiform, hooked : wings above tawny-brown, with an articulate angular band, 

 common to both wings, of pale yellow : primaries striped and streaked with the same colour near 

 the base, and in the costal area : underneath the wings are paler : the primaries have nearly the 

 same marks as above but more conspicuous : on the secondaries the angular band is surmounted by 

 another irregular spot, so as to form two contiguous spots, or rather one large irregular didymous one. 



This species does not appear to belong to either Thymele or Pamphila of Fabricius, as their 

 characters are detailed by Mr. Stephens in his excellent Illustrations of British Entomology A In 

 both of these the palpi are thickly cloathed with hair and the terminal joint is obtuse ; but in H. 

 Peckius the palpi may be described as thickly cloathed with elongated divergent scales, with the 

 terminal joint emerging, naked, and acute. 



4 Haustellat. i, 97, 99. 



