288 MB. walker's CATALOGrE OE DIPTEEOUS INSECTS 



Palpi, antennce and legs black. Arista minutely pubescent. Thorax 

 ivith four interrupted black stripes, bright blue on each side ; scutel- 

 lum purple ; pectus black, with a broad interrupted bluish-green band 

 on each side. Abdomen black, with three interrupted golden-green 

 bands, which are entire and more slender beneath; 1st band much 

 excavated on each side behind ; 2nd slightly excavated ; 3rd entire, 

 broader than the others. "Wings blackish-brown, black near the base ; 

 alulaj black. Female. Frontalia broad, widening slightly in front. 

 First and second bands of the abdomen mostly cupreous. Length of 

 the body 8-9 lines; of the wings 16-18 lines. 



69. RuTiLiA FERVENS, u. s. Foim. Aurato-viridis, cyaneo subvaria, 

 frontalibus atris, palpis antennis pedibusque uigris, thorace vittis 

 quatuor angustis intcrruptis nigris, abdomine nigro fasciis tribus inter- 

 ruptis rufescenti-cupreis, alis luridis basi nigricantibus, alulis obscui'c 

 cinereis. 



Female. Golden-green, slightly varied with blue. Head with cinereous 

 tomentum on each side of the face and of the eyes ; frontalia deep 

 black, widening in front. Palpi, antenna;, and legs black ; arista 

 minutely pubescent. Thorax with four slender interrupted black 

 stripes ; pectus black, with a broad interrupted bluish-green band on 

 each side. Abdomen black, with three interrupted reddish-cu])reous 

 bands, which are narrower and entire beneath; 1st and 2nd bands 

 much excavated on each side of the hind border. Wings lurid, black- 

 ish near the base ; veins black, tawny towards the base ; aluloe dark 

 cinereous. Length of the body 8 lines; of the wings 16 lines. 



70. RuTiLiA ATKiBASis, n. s. Fonn. Satiu'ate viridis, capite argenteo, 

 frontalibus atris, palpis antennis pedibusque nigris, thoracis lateribus 

 cyaneo purpureoque variis, abdomine nigro fasciis tribus aurato- 

 viridibus, P iucisa, 2a 3aque interruptis, alis cinereis costa fusca basi 

 nigra, alulis halteribusque nigris. 



Female. Deep green. Head silvery white, much narrower than the 

 thorax ; frontalia deep black, broad, linear ; face, palpi, antennse, 

 pectus, and legs black. Thorax tinged with blue and purple on each 

 side ; pectus v, ith a bluish-green band on each side. Abdomen black, 

 with three golden-green bands; 1st band much broader than the 

 others, deeply notched on its hind border ; 2nd and 3rd interrupted. 

 Wings cinereous, more or less tinged with brown along the costa, 

 black towards the base; veins, alula; and halteres black. Length 

 of the body 8^ lines ; of the wings 1/ lines. 



71. RuTiLiA coMi'LiciTA, n.s. Fom. Saturate cj'anea, capite argen- 

 teo, frontalibus atris, palpis nigris apice fulvis, antennis pedibusque 

 r.igris, thorace vittis quatuor nigris, scutello obscure purpureo, ab- 

 domine nigro fasciis tribus aurato-viridibus, 1" 2"que interruptis, 

 3° incisa, alis cinereis costa fusca basi nigra, alulis halteribusque 

 uigris. 



