(»F NATURAL HISTORY. 77;; 



slight inequality or imprc&icil transverse line, near the middle : 

 feet dark piccous ; tarsi and knees somewhat paler. 

 Length over two-fifths of an inch. 



8. II. LAimosus. — 9 Greenish; tcrgum purplish, segments 

 margined with blackish. 



Inhabits Mexico. 



Body green, with a purple reflection : antenniB black : nattxii' 

 at tip blackish : labrum black, much elevated at the middle of 

 the tip; the elevation grooved before; mandibles black, tinged 

 with piccous at tip : wings hyaline, slightly tinged with fuligin- 

 ous; nervures fu.scous : metathorax [395] with the including 

 line of the posterior disk, prominent only towards the petiole: 

 tcrgum darker purplish than the thorax ; the broad posterior 

 margins of the segments, blackish : feet, purplish and blue : 

 tarsi blackish-piccous. 



Length about two-fifths of an inch. 



About the size of the preceding, from which it differs mate- 

 rially in color, and in the sculpture of the metathorax. 



4. H. PURUS. — Green; first recurrent nervure confluent with 

 the dividing nervure of the second and third cubital cellules. 



Inhabits United States. 



9 Body green, polished, tinged with bras.sy or cupreous : an- 

 tennaj black : labrum and mandibles piccous, the latter sometimes 

 almost honey-yellow: metathorax at base lineated ; no distinct 

 posterior disk, but the groove is well impressed, and there are 

 often near the petiole, a few, obsolete, raised, converging lines : 

 wings hyaline, very slightly dusky at tip ; nervures brown ; radial 

 nervure fuscous ; stigma pale yellowish ; second recurrent ner- 

 vure exactly uniting with the tip of the dividing nervure of the 

 second and third cellules : tergum obviously varied with bra.s.>»y ; 

 posterior slender margins of the segments dark purplish or black- 

 ish, sometimes not obvious : feet dull piccous : venter dull pi- 

 ccous. 



Length less than three-tenths of an inch. 



% Head, thorax and metathorax, greenish-blue : mandible 

 and labrum, dull honey-yoHow : thighs obviously ting<-l "ItT, 

 bluish-green: venter on the middle segments green. 

 1837.] 



