myzine. 183 



above ; punctured. Thorax closely punctured anteriorly, but more 

 finely and distantly so behind ; a quadrate macula on the meso- 

 thorax, a line over the tegulae, the scutellum, and postscutellum 

 pale yellow, the latter with an angular black spot at the base 

 laterally, and also two oblong ones on the truncation ; wings 

 hyaline and iridescent, the nervures ferruginous, with a fuscous 

 cloud in the marginal cell ; the legs ferruginous, the posterior pair 

 with the coxae and the femora above yellow. The second, third, 

 and fourth segments of the abdomen beneath with interrupted 

 yellow fasciae, the first broadest. 



Hal. Brazil? 



Believed to be from Swainson's collection. 



15. Myzine fallax. 



Female. Length 6 lines. — Black ; the abdomen with shades of blue 

 and violet, and having two uninterrupted yellow fasciae. Head 

 strongly punctured ; the mandibles ferruginous towards their apex ; 

 a narrow ferruginous line at the inner orbits of the eyes, and an 

 abbreviated one behind them. The pro- and mesothorax strongly 

 punctured, the metathorax semiopaque ; an interrupted fascia on 

 the anterior margin of the prothorax, a line beneath the wings, 

 and the lateral margins of the metathorax, ferruginous ; wings 

 subhyaline, with a fuscous stain on the anterior margin of the 

 fore wings. Abdomen with an ovate lateral macula on the basal 

 segment ; the third and fourth segments with a yellow fascia 

 towards their basal margins, the fifth segment with a narrow 

 interrupted fascia ; the apical segment longitudinally striated, and 

 obscurely ferruginous at its apex ; beneath with a lateral macula 

 on the second and third segments. 



Male. Length 6^ lines. — Black, and with orange- coloured spots 

 and fasciae. The clypeus, mandibles, and two spots at the insertion 

 of the antennae ferruginous. The margins of the prothorax, the 

 anterior one interrupted, a quadrate spot on the disk of the meso- 

 thorax, the scutellum, postscutellum, and lateral margins of the 

 metathorax, orange-yellow ; the anterior and intermediate tibiae 

 and tarsi and the apex of the femora, yellow; the intermediate 

 tibiae black behind ; the posterior tibiae at their base yellow, as 

 well as the tarsi. The apical margins of the segments with orange 

 fasciae, those on the first and second segments emarginate in the 

 middle, and also notched laterally. 



Hah. Mexico. 



16. Myzine flavicornis. 



Female. Length 7 lines. — Black, punctured, the flagellum of the 

 antennae orange-yellow ; the wings dark brown, with violet irides- 

 cence. Head with the vertex shining and not very closely 



