OF NATURAL HISTORY. OUT 



having an angulated white line : ovi.luct not exton.Jing hoyond 

 the tip of the abdomen. 



Length one-fifth of an inch. 



2. A. EJUNCIDUS. — FerruginoiLS, reticulate with large punc- 

 tures ; pectus black. 



Inhabits United States. [242] 



Body ferruginous, with crowded, discoidal punctures, giving 

 the surface a reticulate appearance : head without obviou.s punc- 

 tures ; orbits tinged with yellow : antenn:e blackish; first joint 

 yellowish beneath : thorax with a slightly impressed line before, 

 and another each side behind, obsolete ; dilated sutures about 

 the scutel black : wings hyaline ; nervures blackish ; stigma 

 rather slender ; second cubital cellule none, the enterior recur- 

 rent nervure obtusely arcuated; second recurrent nervure rec- 

 tilinear; abdomen slender, dull honey-yellnw, piceous black above 

 and at tip, without large punctures : oviduct as long as the basal 

 joint of the abdomen : feet dark honey -yellow : pleura above the 

 anterior feet with oblique lines : pectus black. 



Length about two-fifths of an inch. 



8. A. .MELLIPES. — IJlack; feet honey -yellow ; posterior thighs 

 armed with a spine. 



Inhabits Indiana. 



Anonidhm mrUlpt:s nob. Contrib. Macl. Lye. p. 74. 

 9 Body black, polished : head with the distance behind the 

 eyes considerable : labrum dull piccous: palpi dull wliitish : tho- 

 rax with the impressed lines rather deep, rendering the thoracic 

 lobes very distinct : wings with a slight dusky tint ; nietatliorax 

 with an obvious spine on each side of the posterior declivity : 

 feet honey-yellow : coxie and thighs robust, particularly tho.se of 

 the posterior pair, of which the thighs are armed beneath near 

 the tip with a prominent spine : oviduct as long as the body, or 

 a little longer, somewhat c()m])ressed towards the tip. 



Length nearly seven twentieths of an inch. 



% Antericir and intermediate thighs rather les^s robust. 



Length less than seven-twentieths of an inch. [243] 



Has some resemblance to a Xoriihs, but the mandibles are 

 bidentatc, and the metathorax and anterior part of the thorax 

 differ. It is a very distinct species. I have thought it may be 

 1835.] 



