PI,ATYPALPUS. 123 



Grey, .beset with a few blaok bristles. Palpi yellow. xVntennse 

 black ; third joint broad, conical, a little shorter than the first and the 

 second ; fourth much longer than the tliird. Wings colourless ; stig- 

 ma brown, long, narrow ; veins brown, tawny at the base. Halteres 

 pale yellow. Abdomen black, shining ; sutures of the segments lioary. 

 Legs tawny, stout ; tips of the joints of the tarsi black ; middle femora 

 very thick ; midcUe tibia; curved. 



Generally distributed. (E.) 



3. agilis, Mg. zw. iii. 80. 29(1822); Ztt. Cinereus, capite an- 

 tico albo, antennis n'ujris, aUs limpidis, abdomine nigro, pecUbiis fulvis, 

 tarsis fuscis basi fulvis, femoribus anterioribus fusco-vittatis, femoribus 

 posticisfuscis. Long, li-1^; alar. 3^-4 lin. 



Grey. Head sliming white in front. Palpi yellow. Antennaj black; 

 third joint conical, rather short ; fourth much longer than all the pre- 

 ceding. Wings colourless ; veins brown, tawny towards the base ; 

 tliird and fourth longitudinal veins very slightly curved towards each 

 other. Halteres yellow. Abdomen black, shining. Legs tmony ; 

 tarsi broion, tcmny towards the base ; anterior femora slightly striped 

 with brown ; hind femora mostly brown ; fore femora nearly as thick as 

 the incrassated middle femora. 



Not very common. (E.) 



4. bicolor, Fb. s. a. 143. 2 (1804); Mg. ; Mq. ; Zii.—flavi- 

 pes, Fin. Cervinus, capite cano antice albo, antennis fuscis basi flavis, 

 pectore cano, alis limpidis, abdomine nigro, pedibus flavis, tarsorura ar- 

 ticulis apice nigris. Long. 1-1 i ; alar. 3-3^ lin. 



Head hoary, white and shining \\\ front. Palpi yeUow. Antennae 

 hrown ; first and second joints yellow ; third short ; fourth black, 

 slightly pubescent. Thorax fawn-colour, clothed with pale yellow hairs, 

 hoary beneath. Wings colourless ; veins yellow, tawny towards the 

 tips. Halteres pale yellow. Abdomen black, shining, with a triangular 

 cinereous spot on each side of every segment. Legs yellow ; tips of the 

 joints of the tarsi black ; middle femora thick ; middle tibiae curved ; 

 tips of their apical spines black. 



Generally distributed. (E. S.) 



5. pallidiventris, Mg. zw. iii. 82. 3.5 (1822); Mq. ; Zii.—flavipes 

 var. minor. Fin. — Cinereus, capite cano antice albo, antennis fuscis basi 



fulvis, pectore cano, alis limpidis, abdomine nigro siibtus fulvo, pedibus 

 flavis, tarsorum articulis apice fuscis. Long, l-i ; alar. 3 lin. 



Cinereous. Head hoary, shining white in front. Palpi yellow. 

 Antenna brown, slender, rather short ; first and second joints tawny. 

 Thorax hoary beneath. Wings colourless ; veins and halteres yellow ; 

 third and fourth longitudinal veins slightly curved towards each other. 

 Abdomen black, shining, tawny beneath. Legs yellow ; tips of the joints 

 of the tarsi brown ; middle femora thick ; middle tibia) slightly eui-ved, 

 tibia^ rather thick. 



