EUMERUS. 241 



fourth dorsal, cyathiform, seated on the third just before the middle ; 

 fifth a little longer ; sixth bare or pubescent, thick towards the base. 

 Thorax convex, pubescent, almost quadrate, with two whitish stripes 

 which do not extend beyond the middle ; scutellum flat, semicircular, 

 with a sharp finely granulated edge, which is beset with short bristles. 

 Wings moderately long, finely pubescent, incumbent and parallel in 

 repose ; subapical areolet entire ; subcostal and radial veins ending 

 separately in the margin ; transverse prtebrachial vein placed at or 

 beyond the middle of the discal areolet; axillary lobe distinct. Ab- 

 domen long, linear, pubescent, incurved at the tip ; segments coarc- 

 tate ; first segment very narrow. Legs rather short ; hind legs rather 

 longer than the anterior; hind femora very thick, with a double 

 row of slender spines on the apical half of the underside ; hind 

 tibia3 somewhat curved, subclavate, slightly thickened in the middle ; 

 hind metatarsi rather broad. Male. Eyes contiguous; facets large 

 in front. Abdomen obtuse at the tip. Fern. Eyes remote. Abdomen 

 acute at the tip. 



The larvae feed on bulbous roots. 



1. ornatus, Mg. zw. iii. 205. 4 (1822) ; Mq. ; Ztt. strigatus p., 

 Fin. ^Eneo-viridis, antennis ferrugineis, alis cinereis, abdomine utrin- 

 que lunulis tribus canis, pedibus nigris, tarsis fulvis. Long. 4 ; alar. 

 7 lin. 



Cupreous. Eyes hairy. Antenna dark ferruginous. Thorax aeneous- 

 green. Wings grey ; stigma dark brown. Halteres luteous. Abdomen 

 black, cupreous on each side, with 3 interrupted arched hoary bands, 

 lurid beneath. Legs black ; knees and tarsi tawny ; tarsi brown to- 

 wards the base. 



Eare. In Mr. Stephens^ collection. (E.) 



2. ruficornis, Mg. zw. iii. 206. 5 (1822) ; Ztt. ; Ct. ; Lw. Cha- 

 lybeus, antennis rufis, thoracis disco aneo cano-bivittato, alis subcinereis, 

 abdomine utrinque lunulis tribus canis, pedibus nigris, tibiis basi tar- 

 sisque subtm rufis. Long. 3i ; alar. 6i lin. 



Chalybeous. Antenna red. Disc of the thorax teneous, with 2 hoary 

 stripes. Wings slightly grey ; stigma brown. Halteres yellow. Ab- 

 domen black, adorned on each side with 3 slightly curved hoary bands. 

 Legs black ; tibia towards the base and tarsi beneath red. 



Rare. In the British Museum. (E.) 



3. strigatus, Fin. d. s. syrph. 61. 8 (1816); Mg. ; Mq.; Ztt. 

 annulatus, Pz. Chalybeus, antennis nigris, thoracis disco aneo cano- 

 bivittato, alis subcinereis, abdomine utrinque lunulis tribus canis, tibiis 

 basi ferrugineis, t arsis piceis. Long. 4 ; alar. 7 lin. 



Chalybeous. Antenna Hack. Disc of the thorax aneom, with 2 

 hoary stripes. Wings slightly grey ; stigma tawny. Halteres yellow. 

 Abdomen adorned on each side with 3 oblique slightly curved hoary 



VOL. i. 2 i 



