40 i)lPTERA 



Genus-ERISTALIS. 



Latreille. 

 Body thick. Face prominent. Antennae generally inserted under 

 a projection on tlie front ; the third joint almost orbicular; style 

 sometimes naked, sometimes hairy. Eyes hairy. Subcostal cell of 

 the wing generally closed ; cubital pediform. 



E. ciNGULATUs. FabHcius, Syst. Ent. (1775), p. 767. Syst. Anti- 

 Uatorum, p. 242. 



Head ferruginous, with two vertical black stripes ; style of 

 antennse tomentose. Thorax black, covered with ferruginous tomen- 

 tum. Abdomen black ; a white band, interrupted in the middle at 

 the base of the first segment ; the second and third with four, and 

 the fourth with two, white spots. Legs black, soles of the feet fer- 

 ruginous ; femora thickened behind ; tibiae incurved. 



New Zealand (Sir J. Banks). 



The shape of the legs puts this species into the next genus. 



aenus-MALLOTA. 



Meigen. 

 Body thick, generally hairy. Face prominent. Front broad in 

 both sexes. Antennae inserted under a projection of the front; third 

 joint broader than long. Posterior tibiae incurved. "Wings open, 

 cubital vein sinuous. 



M. ANTiPODUs. Schiller, I.e., p. 359 (Helophilvs), (1868). 



Female. Black. Thorax with four whitish-grey longitudinal 

 streaks, the outer close on the margin ; between the inner a small 

 grey line. Scutellum yellow-red. Abdomen black, the second seg- 

 ment with broad gold-yellow lateral patches ; the third with pale 

 yellow small patches ; the remainder of the segments metallic on the 

 hinder half. Head black ; lower face yellow ; projection yellow ; 

 cheeks black ; front shining-black, closely yellow-dusted behind ; 

 crown deep black. Antennae black, the third joint broader than long, 

 rounded. Legs shining-black, hinder parts of thighs thickened; 

 points of fore and middle thighs, &c., lively reddish-yellow. Wings 

 tinged with very pale brownish-yellow. 



Length, 5^ lines. 



M. LATiFRONs. ScMner, I.e., p. 359 fHelophilusJ, (1868) . 



Thorax black, with five grey longitudinal streaks ; the outer one 

 broad, and joined on the suture to the inner one ; sides of breast grey, 



