278 Mr. F. Wnlker's Clmracters of undescribed Dij)tera 



longer than the first and the second. Tliorax with cinereous to- 

 mentum. Abdomen red-black at the tip, and with two black 

 spots and two whitish dots on each side ; underside black. Legs 

 tawny, stout ; coxae black ; joints of the tarsi with black tips. 

 Wings brown, dark greyish along the hind border ; veins black. 

 Halteres reddish. 



Length of the body 7 lines; of the wings 14 lines. 

 Burmah. 



Dosypogon mop'inntus. 

 ]]Jas. — Niger, capita pectoreque auratis, mystace albido, thorace 

 vittis quatuor auratis macidisqne dnabns humeralibus fulvis, 

 abdomine nigro-aeneo nitente u)aculis transversis lateralibus 

 albidis, pedibus fulvis validis, alis sub-luridis apice cinereis, 

 halteribus fulvis. 

 Male. — Black. Head in front ferruginous, or whitish gilded, 

 according to the direction in which it is viewed. Mystax whitish. 

 Tiiird joint of the antennte almost linear, hardly tapering from the 

 base to the tip, rather longer than the first and the second toge- 

 ther. Thorax with four gilded stripes, and with a tawny spot on 

 each shoulder. Pectus mostly gilded. Abdomen aeneous black, 

 shinino- ; hind borders of the segments with transverse whitish 

 spots on each side. Legs tawny, stout; spines paler. Wings 

 slightly lurid, cinereous towards the tips ; veins tawny, black 

 towards the tips and along the hind border. Halteres tawny, 

 liength of the body 8g lines; of the wings 16 lines. 

 Burmah. 



Dasypogon iiiopporlunu.i. 



/"o-m.— Niger, capite albido nitente pilis subtus albidis, mystace 



albo, abdomine nigro-cupreo pilis apicalibus albidis, fe- 



moribus tibiisque anticis apice fulvis, alis nigricantibus 



postice pallidioribus, halteribus testaceis apice nigris. 



Female. — Black. Head with whitish tomentum and hairs, white 



and shining or tawny in front according to the direction in which 



it is viewed; mystax white. Palpi with stout black bristles. 



Third joint of the antennae slightly attenuated from the middle to 



the tip, much longer than the first and the second together. 



Abdomen cupreous black, with some short whitish hairs at the 



tip. Tips of fore- femora and fore-tibiae towards the tips tawny; 



spines pale testaceous. \\ ings blackish, somewhat paler along 



the hind border ; veins bhick. Halteres testaceous, with black 



knobs. 



Length of the body 8 lines j of the wings IG lines. 

 Burmah. 



