PRIOMEBUS. — ERISTALIS. 



155 



5. Iliud femora toothed below Mkuodon, Meig., p. 211. 



Hind femora thickened or not ; -without 



any prominent tooth or spine below . . ('•. 



6. Anterior cross-vein much beyond middle 



of discalcell Azpkytia, ^\ alk., p. 221. 



Anterior cross-vein almost exactly at 

 middle of discal cell < • 



7. Body subfusiform {i.e., head, thorax 



and abdomen closely applied to one 

 another) ; brilliant metallic blue or 

 violet species, apparently bare though 



actuallv very shortly pubescent . . . . AxoxA, \V alk., p. 22J. 

 Body not subfusiform ; non-metallic 

 species , ■ , , . ,-.^q 



8. Densely pubescent species Mallota, Meig-., p. 218 



Bare species llKLorniLus, Meig., p. 201. 



Genus PRIOMERUS, j\Iacq. 

 Priomerus, Macquart, Hist. Nat. Ins., Dipt, i, p. 511 (1834). 



Genotype, P.fasciatus, Macq., the original species. 



"Face prominent, a little concave below antennie ; epistome 

 thick, descending some distance below eyes in profile. Eyes con- 

 ticruoiis in 6 • Antenna? on a frontal projection, 3rd 30int oval, 

 arista bare, dorsal. Abdomen depressed. Hind femora denti- 

 culate. Marginal cell closed." , • , ^, 



Macqiiart attributes this genus to Serville, stating that it hast he 

 facies of lldoxyhilus. Kertesz (Cat. Dipt, vii, p. 208, 1910) sinks 

 Priomerus in Eristalis, but in my opinion the toothed hind temora 

 entitle it to rank as distinct. 



V2.0. Priomerus fasciatus, M(tc([. 



Priomerus fasciatus, Macquart, op. cit. p. 612 (IS.'U). 



cj " Black. Face and front with grey tomentum ; facial bump 

 black"; antenna) tawny, brown above. Thorax with green reflec- 

 tions and three yellow longitudinal stripes; sides yellow. Hind 

 border of scutellun. tawny. Second a))donnnal segment with a 

 broad yellow band, interni|.ted in middle, 3rd and 4th segments 

 each witli a straight whitish band. Base of tibia) whitish. 



" India. Serville's collection." 



Van der Wulp quotes the locality as East Indni. The species 

 may be taken as n-iiuiring contirmation as Indian. 



Genus ERISTALIS, /^<iir. 



Eristalis, Latreille, Hist. Nat. Crust. Ins. xiv, p. .'ir).3 (1804). 

 Palpada, Macquart, Hist. Nat. Ins., Dipt, i, p. r>l2 (l*;^; j); 

 Syrphus, Zetterstfdt (uec Fabr.), Ins. Lai.p., 1 ipt. p. •'• 1 '.^•'*^^- ,.„ 

 Eristnliiius, l{.jndani, Nuov. Annal. Sci. Nat. Bologna, (2) ii, p. -io.i 



(1844). 

 Eristaloida, id., loc. cit. 



