COLLECTED IN 13ATCIIIAK. KAISAA, ETC. 285 



silvery wLitc ; hind tarsi fltit, elongated, dilated. Winjfs cinereous, 

 black towards the tips ; veins black ; halteres Avhite. Length of the 

 body 3 lines ; of the wings 5 lines. 



Gen. Paeagl's, Meigen. 



59. Paragus substitutus, n. s. "Mas. Chalybeo-niger, facie alba, 

 autenuis fidvis liuca nigricante, abdomine fasciis quatuor chalybeis, 

 pedibus fulvis, femoribus posterioribns uigris^, alls cinereis, halteribus 

 albidis. 



Male. Chalybeous black, shining. Head broader than the thorax ; face 

 white. Antennae tawny, with a blackish line above. Abdomen with 

 four chalybeous bands. Legs tawny ; posterior femora black, with 

 ta^^ny tips. Wings cinereous; veins black; halteres whitish. Length 

 of the body 2 lines ; of the wings 3 lines. 



Geu. Baccha, Fair. 



60. Baccha incisa, n. s. Ycem. Obscure rufa, capite vitta cyaneo- 

 nigra, antennis pedibusquc fulvis, thorace vitta nigra, abdomine basi 

 conipresso posticc dilatato fasciis duabus fulvis, femoribus tibiisque 

 posticis nigricante fasciatis, alis limpidis basi costa fasciaque nigricau- 

 tibus, halteribus fulvis. 



Nearly allied to B. dispar. 



Female. Dull dark red. Head with cinereous tomentura, bluish-black 

 about the base of the antenna;, and with a bluish-black stripe extend- 

 ing from thence to the peristoma. Proboscis, antenucC, and legs tawnj^ 

 Thorax with a black stripe ; metathorax black. Abdomen compressed 

 towards the base, dilated hind\vai-u, where there are two curved tawny 

 bands, the hind one abbreviated. Hind femora and hind tibia; with 

 blackish bands. Wings limpid, blackish at the base and irregularly 

 along the costa, and obliquely at the tips, and with a broad middle 

 blackish band ; veins black ; halteres tawny. Length of the body 6 

 lines ; of the wings 10 lines. 



Gl. Baccha tripartita, n. s. ^las. Nigra, capite nigricanti-c3aneo 

 antice fulvo, antennis pedibusque pallide luteis, pectoris lateribus tes- 

 taceo fasciatis, abdomine conipresso fulvo fasciis duabus nigris apicem 

 versus nigricanti-purpureo subdilatato, femoribus posticis nigricante 

 fasciatis, alis subluriilis costa exteriore lurida, halteribus fulvis. 



Male. Head blackish-blue above, tawny in front. Proboscis, antennre 

 and leg.3 pale luteous. Pectus with two oblique testaceous bands on 

 each side. Abdomen compressed, tawny, with two black bands ; hind 

 part blackish purple, slightly dilated. Hind femora with a blackish 

 band. Wings vitreous, with a slight lurid tinge; costa lurid for nearly 

 half the length from the base, blackish from tlieuce to the tii)s ; veins 

 black, tawny at the base; halteres tawny. Length of the body 5 

 lines J of the wings 9 lines. 



