LIST OF DIPTEKA. 



337 



Cyrtus dentatus, Macq. Dipt. Exot. i. 2, 168, I, pi. 14, f. 3. 



Erichs. Entomogr. 148, 3. 

 Cyrtus giblius, Var. ? 



Algiers. 



Genus 5. EXETASIS. 



Antennae triarticulatse, capite paullo longiores ; articulus lus 

 brevis, 2us adhuc brevior ; 3us longissimus, linearis. 



Exetasis, Dlptera Saundersiana, Pt. 3, 202. 



Subcostal vein ending before half the length of the wing ; 

 radial ending at beyond three-fourths of the length ; cubital forked 

 near its base, the first fork ending a little before, and the second a 

 little behind, the tip of the wing; first, second and fourth externo- 

 medial veins complete ; third abbreviated; subanal and anal veins 

 united on the border. 



1. Exetasis tl'mens. 



Exetasis tumens, Diptera Saundersiana, Pt. 3, 203. 

 Brazil. 



Genus 6. PSILODERA. 



Oculi glabri, super antennarum basim coutigui. Ocelli tres, 

 minimi. Proboscis longa. Antennas biaiticulatae, fronte insertae. 

 Prothoracis lobi dorsales remoti. 



Psilodera, G. R. Gray, Griff". Anim. Kingd. Ins. xv. 779 ; 



Erichs. 

 Cyrlus, p., Wied. 

 Mesocera, Macq. 



Wings transversely rugulose : subcostal vein ending at a little 

 beyond half the length of the wing; mediastinal ending at beyond 

 five-sixths of the length ; radial curved towards the disk, ending at 

 a little beyond the mediastinal ; branches of the cubital curved to- 

 wards the hind border, and ending at a little in front of the tip of 

 the wing: three externo-medial veins ; subanal vein joining the anal 

 at some distance from the border. 



