_Female._ Æneous; head silvery white; vertex black, with an elongated white point on each side; antennæ pale red; pectus and sides of the thorax whitish; abdomen with two broad interrupted testaceous bands; apical segment with a white spot on each side at the base; under side testaceous except near the tip; legs testaceous; hind femora and hind tibiæ black, the latter with a red band; wings greyish-vitreous; veins black. Length of the body 3-1/2 lines; of the wings 5 lines. Gen. BACCHA, _Fabr._ 96. BACCHA DISPAR, n. s. _Mas._ Cupreo-nigra, capite chalybeo-nigro vittis duabus flavis, antennis rufis, thorace maculis quatuor luteis, abdomine fasciis duabus arcuatis luteis, pedibus rufescentibus, alis subcinereis, costa fasciaque nigricante fuscis, halteribus fulvis. _Foem._ Scutello flavo apud discum nigricante, abdominis petiolo fulvo, fascia 2^{a} non arcuata, apice chalybeo, pedibus testaceis, posticis nigro fasciatis. _Male._ Cupreous black; head chalybeous black, with a yellow stripe on each side in front; antennæ red, very short; 3rd joint conical; arista black, short; thorax with two luteous _spots_ on each side; the 1st pair joining a luteous band on each side of the pectus; abdomen petiolated, clavate, with two much-arched luteous bands; legs reddish; wings slightly cinereous, blackish-brown along the costa, and with an irregular blackish-brown band, which hardly extends to the hind border; veins black; halteres tawny. _Female._ Scutellum yellow, with a blackish disk; abdomen much compressed, with a long slender linear tawny petiole; the 2nd yellow band not arched; tip chalybeous; legs testaceous; hind femora slightly banded with black; hind tibiæ black towards the tips. Length of the body 4-1/2-5 lines; of the wings 8-9 lines. Gen. SYRPHUS, _Fabr._ 97. Syrphus consequens, _Wlk._ See Vol. I. p. 18. Fam. MUSCIDÆ, _Latr._ Subfam. TACHINIDES, _Walk._ Gen. NEMORÆA, _Macq._ 98. NEMORÆA AMPLIFICANS, n. s. _Foem._ Cinereo-nigra, capite testaceo, frontalibus nigris, palpis fulvis, antennis piceis, thorace vittis quinque nigris, scutello ferrugineo, abdomine piceo fasciis duabus latis interruptis cinereis, alis cinereis basi et apud costam fuscis.