852 LIST OF DIPTERA. 



not prominent ; sides of the face fringed with bristles at the base : 

 eyes red, not hairy : sucker black, clothed with tawny hairs ; palpi 

 black, beset with black bristles : feelers black, shorter than the face ; 

 third joint full thrice the length of the second, slightly decreasing 

 in depth from the base to the tip, which is almost truncated ; bristle 

 more than twice the length of the third joint, feathered with short 

 hairs to its tip : chest adorned with a white covering : abdomen 

 compressed, obclavate, increasing in depth from the base till near 

 its tip, more than thrice the length of the chest ; sutures of the seg- 

 ments hoary : legs black, slender, very long, clothed with black 

 hairs and bristles : wings dark gray, very long and narrow ; wing- 

 ribs and veins black ; tip cross-vein forming a very obtuse angle 

 with the fourth longitudinal vein, having a very indistinct inward 

 angle at about one-fourth of the length from the base, straight from 

 thence to the tip, joining the border a little above the tip of the 

 wing ; lower cross-vein with a short inward curve near the base, and 

 a long outward curve from thence to the tip; both very slight; 

 scales whitish, with sawny borders ; poisers tawny. Length of the 

 body 8 lines ; of the wings 13 lines. 

 a. Para. From Mr. Stevens' collection. 



Group X. 



Dexia Randa. Fulva, capite aureo, thorace vitlis quatuor Jlams or- 

 nato, scutello cyaneo, abdomine cyaneo basi subtusque fulvo, pal- 

 pis antennisque luteis, pedibus fulvis , iibiis posterioribus tarsis- 

 que piceis, tarsis anticis ferrugineis, alls fulvis apice fuscis. 

 Body bright tawny, clothed with black hairs and bristles : head 

 adorned with golden lustre, and having white reflections along the 

 eyes beneath : a ferruginous stripe fringed with bristles between the 

 eyelets and the feelers ; sides of the face prominent and fringed with 

 bristles at the base ; epistoma not prominent : eyes red, not hairy ; 

 fore part flat, composed of larger facets than those elsewhere : sucker 

 ferruginous, clothed with tawny hairs ; palpi luteous, clavate, beset 

 with black bristles : feelers luteous, nearly as long as the face; third 

 joint downy, nearly linear, veiy slightly concave above, flat beneath, 

 rounded at the tip, about thrice the length of the second joint ; bris- 

 tle black towards the tip, more than twice the length of the third 

 joint, deeply but thinly fringed from the base to the tip : disk of the 

 chest ferruginous, adorned with four pale yellow stripes, and with a 

 blue colour which appears on its hinder part and on the scutcheon ; 

 fore part of the breast yellow : abdomen a little longer than broad, 

 broader but hardly longer than the chest, bright blue at the tip be- 

 neath and on the whole of the back, excepting the base : legs taw- 



