PORPHYKOPS. 213 



flavis, illofasciis tribus obscuris, alls hyalinis, venis prabrachiali et cubitali 

 parallelis, transversa in medio alae sita ; Mas. hypostomate angustissimo, 

 abdomine angusto cylindrico, ano rotundato vix incrassato ; Fcem. hy- 

 postomate latiore, abdomine subdepresso. Long. 1 ; alar. 2 lin. 



Head and thorax metallic green, the long bristles blackish. Face white. 

 Antennae yellow, with the tip dusky. Abdomen pale yellow, with the 

 posterior incisures dusky, forming usually three narrow bands. Hypopy- 

 gium of the male small. Legs and coxae very pale yellow. 



Not common. In Mr. Halida/s collection. (E. 1.) 



7. tenellus, Wd. z. m. ii. 73. 20 (1818); Mg. ; ^. 



Ztt. Flavo-ferrugineus, thorace postico foveola viridi, fronte cana, 

 hypostomate albo, antennis brevissimis, ore subexserto pedibusque pallide 

 flavis, alls flavescenti-hyalinis, venis prabrachiali et cubitali versus 

 apicem subconvergentibus, transversa fere in medio alae sita; Mas. 

 hypostomate angustissimo, ano rotundato parum incrassato j Fcem. 

 hypostomate latiore, ano simplici. Long. \\; alar. 2 lin. 



Fellow, inclining to ferruginous. Face and front white. Antennae 

 often dusky at the tip. Thorax with a metallic green spot on the depressed 

 space before the scutellum, the long bristles ferruginous. Abdomen of tJie 

 male clavate, the hypopygium being thick and scarcely inflected. Legs 

 pale yellow, with the last joint dusky, the hind metatarsus rather longer 

 than the following joint. 



Not common. In Mr. Halida/s collection. (E. I.) 



8. ornatus, Hal. z. j. v. 358. 17 (1831). tenellus, Fin. p. ; Ztt. 

 Flavo-fer>rugineis, capite thoraceque supra viridibus, pedibus pallide flavis. 

 Long. 1^ ; alar. 2 lin. 



Yellow, inclining to ferruginous. Head and thorax metallic green 

 above, the long bristles ferruginous. Abdomen of the male clavate, 

 the abdomen being thick and scarcely inflected. Legs pale yellow ; 

 the hind metatarsus rather longer than the following joint. 



Not common. In Mr. Haliday's collection. (E.) 



9. flaviventris, Mg. zw. iv. 58. 28 (1824). bifasciellus, Ztt.? 

 Nigro-ceneus, thorace subtus flavescente, antennarum articulo tertio 

 elongato apice fulvescente, pedibus pallide flavis ; Mas. abdomine Jlaves- 

 cente basi et apice fusco, femoribus anticis subtus tibiisque anticis intus 

 ciliatis ; Foem. abdomine supra nigro-cupreo. Long, f ; alar. 1^ lin. 



Brassy -black. Face white. Antenna with the third joint somewhat 

 tawny at the tip, elongated, triangular in the male, shorter in the female ; 

 arista near its base, long, the joints of nearly equal length in the male. 

 Thorax yellowish beneath. Fringe of alulse black. Abdomen of the 

 male yellowish, with the first segment and the last one dusky above, the 

 intermediate ones dark at the incisures. Abdomen of the female blackish- 

 bronze above. Appendages of the hypopygium short, nearly linear, 

 blackish. Legs and coxae pale yellow ; in the male the under side of the 



