WAIGIOU, MTSOL, AND NOETH CEEAM. 211 



tribus anticis fasciaque nigris, abdomine fasciis duabus apiceque 

 chalybeo-viridibus, fascia 2* interrupta, vittis tribus posticis nigris, 

 tarsis basi genibusque rufis, alis cinereis. 

 Male. Black. Head whitish-cinereous beneath, and with a whitish- 

 cinereous stripe on each side of the face. Antennae reddish ; arista 

 bare. Thorax chalybeous green, with three short black stripes in 

 front, and with a black band at the base of the scutellum. Abdomen 

 with two bands and the hind part chalybeous green ; 1st band basal; 

 2nd widely interrupted ; three black stripes on the hind part. Tarsi 

 towards the base, and knees, dark red. "Wings cinereous ; veins black ; 

 stigma brown. Length of the body 4 lines ; of the wings 9 lines. 



48. Eristalis erythropyga, n. s. Mas. Obscure cyanea, facie 

 albida, callo antico rufescente, antennis fulvis, thorace postico 

 purpureo, abdomine rufescente basi nigro fasciis duabus cyaneo- 

 purpureis, tibiis obscure rufis, tarsis piceis, alis cinereis, halteribus 

 fulvis. 



Male. Dark blue. Face with whitish tomentum, except along the cal- 

 lus, which is reddish in front. Antennae tawny ; arista bare. Thorax 

 purple hindward. Abdomen reddish; basal part black, with two 

 bluish-purple bands ; second band interrupted in the middle, notched 

 hindward on each side. Tibiae dark red. Tarsi piceous. Wings cine- 

 reous; veins black ; halteres tawTiy. Length of the body 4^ lines; 

 of the wings 10 lines, 



49. Eristalis placens, n. sp. Foem. Nigra, capite cinereo antice 

 testaceo, antennis fulvis, thorace vittis quinque canis, scutello lateri- 

 busque fulvis, pectore strigis duabus obliquis testaceis, abdomine 

 fasciis duabus maoulisque quatuor obliquis punctisque duobus testaceis, 

 segmentis chalybeo marginatis, pedibus halteribusque testaceis, femo- 

 ribus nigro fasciatis, alis limpid is, costa nigro bipunctata. 



Female. Black. Head cinereous ; fore part testaceous, with paler 

 tomentum. Antermae tawny ; arista bare. Thorax with five hoary 

 stripes. Sides and scutellum tawny. Pectus hoary in front, with 

 an oblique testaceous streak on each side. Abdomen with two testa- 

 ceous bands near the base ; 2nd band slightly interrupted, dilated on 

 each side ; hind borders and sides of the segments chalybeous ; 3rd 

 and 4th segments with an oblique testaceous spot on each side ; 5th 

 with two testaceous points. Legs testaceous; femora with black 

 bands, which are broadest in the hind femora. Wings limpid ; veins 

 black, tawny towards the base ; costa with two black points ; halteres 

 testaceous. Length of the body 6 lines ; of the wings 10 lines. 



Gren. AxoKA, n. g. 



Alas. Corpus subfusiforme. Caput breviconicum. Oculi maximi. 

 Antennce brevissimae ; articulus 3"' rotundus ; arista nuda. Abdo- 



y 



