MYRMELEON. 225 



MYRMELEON 



Antennae short, robust, the apex thickened ; body elongated, 

 slender ; feet long, slender ; spurs straight or a little incurved ; 

 base of the nails not dilated; wings long, narrow, densely veined. 



f Apex of the wings with a broad fuscous band. 



1. M. gratus! 



Formicaleo grata Say, Journ. Acad. Pliilad. VIII, 45, 2. Myrmeleon gra- 

 tus Walk.! Catal. 392, 157. Myrmeleon roseipennis Burm.I Handb. 

 II, 995, 13 ; Ramb. ! Neuropt. 408, 38, tab. xii, fig. 2. 



Black; margin of the labiurn, a transverse stripe upon the face 

 and the occiput yellow; antennae long, the apex hardly thickened; 

 labial palpi short, black, the last article longer, fusiform ; prothorax 

 black, a middle line, broader at base -and apex, white ; abdomen 

 fuscous ; feet slender, long, rufo-fuscous, base of the femora pale ; 

 posterior tibiae pale, with the apex fuscous ; spurs long, straight, 

 as long as the two basal articles of the tarsi ; tarsi pale, with the 

 apex fuscous ; wings large, hyaline, the apex rosy, interior to which 

 is a large, trifarious, fuscous spot ; anterior wings with a spot at 

 the middle of the posterior margin, and a series of points at the 

 submedian nervure, fuscous ; median and submedian nervures yel- 

 low, interrupted with fuscous. 



Length to tip of wings 52 millim. Alar expanse 94 millim. 



Hab. Indiana; St. Louis; Philadelphia; Mississippi (Edwards). 



f f Wings with ocellate fuscous spots. 



2. M. obsoletus! 



Formicaleo obsoleta Say, Jour. Acad. Philad. VIII, 44, 1. Myrmeleon ocel- 

 latus Burm.! Handb. II, 995,12; Walk. Catal. 401, 172. Myrmeleon 

 nigrocinctus Ramb.! Neuropt. 398, 20; Walk.! Catal. 361, 101. 



Luteous; face with a transverse, broad, fuscous fascia; antennae 

 long, the apex clavate, luteous, the base and apex black ; labial 

 palpi short, luteous, the last article longer, fusiform ; prothorax 

 elongated, narrower anteriorly, luteous, a little granulated with 

 black; meso- and metathorax with a broad, dorsal, fuscous stripe ; 

 at each side a broad black stripe; abdomen black, a luteous, dorsal 

 band upon the middle of each segment ; feet elongated, very slender, 

 black; base of the anterior femora, and apex of the tibiae brown; 

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