SABGUS. 83 



though not greatly wider towards vertex and antennae ; varying 

 from brilliant metallic violet-blue to bright green, bearing mode- 

 rately dense grey pubescence on upper part, and more brownish 

 about the middle ; above the antennae the frons takes the form of 

 a large, bare, shining, pale yellow (sometimes brownish) callus. 

 Pace and lower part of head, including proboscis, varying from 

 brownish orange to pale yellowish, with light yellowish pu- 

 bescence ; occiput black ; postocular fringe whitish, continuous. 

 Thorax with dorsum and scutellum brilliantly shining metallic 

 green, bronze-green, or cupreous in <S , and bluish green or green 

 in $ , with dense fiue yellow ( rf ) or whitish ( <J> ) pubescence ; 

 pletirce concolorous, with shorter pubescence. Abdomen metallic 

 shining yellowish bronze or cupreous in tf , violet or blue in $ , with 

 dense though not conspicuous yellow pubescence towards sides in 

 (5 , the dorsal region often nearly bare ; whole surface in $ with 

 short white pubescence, a little longer towards sides ; venter 

 generally dark brown or aeneous, shining, with microscopic 

 pubescence. Legs pale yellow, with very short pale yellow ( d 1 ) 

 cr white ( $ ) pubescence. Wings pale yellowish grey or pale 

 brownish, stigma a little darker; halteres pale yellowish or 

 white. 



Length, 9-10 mm. 



Described from a considerable number of both sexes in the 

 Indian Museum, Pusa, and Dehra Dun collections and my own. 

 Common and widely distributed in India in May and July to 

 October up to 5000 ft. ; also generally distributed in the East, 

 Rangoon, Singapore (both Srunetti); Borneo, Java, Amboina, 

 Aru Islands, Shanghai. 



Bigot in 1887 described a second species, coming from North 

 America, under the name pallipes. 



54. Sargus mactans, Walk. 



Saryus mactans, Walker, Proc. Liun. Soc. Lond. iv, p. 97 (1860) ; 

 Bruuetti, Reo. Ind. Mus. i, p. 107 (1907) ; de Meijere, Tijd. v. Ent. 

 liv, p. 263 (1911). 



cJ . Head with frons extremely narrow, the sides never parallel, 

 widening gradually above and below from point of nearest 

 approach, aeneous yellow or brassy, with yellow pubescence on 

 vertical and frontal triangles ; ocelli at some distance below 

 vertex, upper ones contiguous to eye-margins ; face, mouth- 

 opening, and proboscis yellowish orange, with a little yellowish 

 hair ; antennas orange ; occiput black, a fringe of whitish hairs on 

 lower margin. Thorax with dorsum, pleurae, scutelluiu, and 

 metanotum brilliantly shining cupreous green, with rather dense 

 soft yellow pubescence, which becomes whitish on anterior margin 

 of dorsum ; a shoulder-spot, a narrow stripe thence to wing-base, 

 extending over upper part, of sternopleura, brownish or yellowish. 

 Abdomen brilliantly shining cupreous, sometimes with a green 

 tinge, with rather dense yellow pubescence towards and at sides, 



G2 



