MICKODON. 311 



Described from a unique $ from Deesa (Bombay Presidency), 

 iii. 1897 (Nurse). 



Ti^ipe in British Museum. 



235. Microdon conveniens, sp. no v. 



$ . Very near contractus but certainly distinct. Vertex more 

 elevated, 1st joint of antennae blackish-brown (rest of antennas 

 missing) ; eyes, dark coffee-brown. Legs orange, basal half of 

 middle femora brownish, a narrow median brown ring on middle 

 tibije; hind femora black for three-fourths of their length, hind 

 tibiae with a narrow black ring ; traces of a dark ring on 

 fore tibiae. Wings with the ultimate microscopic pubescence 

 8uflii:iently obvious just to darken the surface when seen under 

 a strong lens. 4th vein with apical section straight and 

 recurrent at an acute angle. 



Length. 9 mm. 



Described from a single $ from Assam, in the Britisli Museum. 



236. Microdon stilboides, Walk. 



Microdon stilboides, Walker, List Dipt. Brit. Mas. iii, p. o38 

 (1849). 



S . Head metallic blue-green. Eyes separated at nearest point 

 of approach by one-tifth of the head ; vertex and froiis with 

 blackish-brown pubescence, face with whitish pubescence, in both 

 cases moderately dense. Antennae black, set in a bare brown spot 

 on face, arista brown. Occiput concolorous metallic, with a fringe 

 of siiort pale yellow hairs. Thorax metallic blue-green, with 

 dense pubescence, which appears black, green or yellow according 

 to direction of view ; pleura with black pubescence. Scutellum 

 with hind corners produced into two blunt teeth. Abdomen 

 metallic blue-green ; 1st segment wholly purple ; extreme tip of 

 abdomen for a small space orange ; pubescence black, almost 

 microscopic, a litte pale yellowish hair towards tip. Venter purple 

 at base, remainder missing; genitalia orange. Legs u)etallic 

 purple ; femora with blue-green reflections ; pubescence of legs 

 pale, inconspicuous. Wings pale brownish-grey; darker anteriorly 

 to behind 3rd longitudinal vein; spurious vein very distinct, 

 ending opposite tip of appendix in 1st posterior cell; a short 

 appendix towards tip of 4th vein, apical section of latter 

 sinuate. Alar squamse pale brown, with brown edges and 

 fringe; thoracic squama; greyish-white with whitish fringe; 

 halteres whitish. 



Ijtiigth, 12 mm. 



Described from Walker's Igpe, a, d labelled simply " E. Ind.,"' 

 which usually means East India: in the British Museum. A 

 brilliantly metallic, almost uniformly green s[)ecies with bluish 

 reflections, and punctate. 



