ME. WALKER 01!^ DIPTERA COLLECTED AT MAKESSAB. 99 



elliptical, a little broader but uot longer than the thorax. Legs rather 

 long. Wings narrow; 1st cubital vein about one-fourth the length 

 of the 2nd; four externo-medial veins complete; subanal veincui'ved, 

 joining the anal vein at some distance from the border ; discal areolet 

 elongated and attenuated exteriorly ; exterior side very short. 



26. Ampsalis geniata, n. s. Fam, Ferrugineo-fusca, antennis ni- 

 gris basi fulvis, thorace vittis duabus testaceis, scutello testaceo, apice 

 spinisque et pectoris disco nigris, abdomine nigro, basi vittis duabus 

 interruptis laterahbus pedibusque testaceis, alis cinereis apices versus 

 fuscescentibus. 



Female. Ferruginous brovra. Antennae black, tavray towards the base. 

 Thorax with two testaceous stripes ; scutellum testaceous ; tip and 

 spines black. Disk of the pectus black. Abdomen black ; base and an 

 interrupted stripe along each side testaceous. Legs and halteres tes- 

 taceous. Wings grey, brownish in front towards the tips; veins 

 black, testaceous at the base ; stigma testaceous. Length of the body 

 6 lines ; of the wings 1 1 lines. 



Gren. Tracana, n. g. 



Mas et Fam. Corpus elongatura. Proboscis lanceolata. Antenna 

 graciles, filiformes, capite transverso vix breviores. Thorax longi-ellip- 

 ticus; scutellum bispinosum. Abdomen thorace pauUo longius et 

 latius. Pedes longiusculi. Alee longae, non latse. 



Male and Female. Body elongate. Head rather broader than the fore 

 part of the thorax. Mouth lanceolate ; palpi very short. Antenna; 

 slender, filiform, about as long as the breadth of the head ; 3rd joint 

 long; 4th and following joints shorter. Thorax elongate-elliptical, 

 with a distinct linear callus along each side ; scutellum armed with 

 two obliquely ascending spines. Abdomen elongate-elliptical, most 

 attenuated towards the base, a little broader and longer than the tho- 

 rax. Legs rather long. Wings long, not broad ; 1st subcubital vein 

 hardly one-third the length of the 2nd ; four externo-medial veins 

 complete ; subanal vein curved, joining the anal vein near the border ; 

 discal areolet oblong, narrower exteriorly ; exterior side very short. 



27. Tracana iterabilis, n. s. Mas et Foim. Cinereo-nigra, capite 

 antico fulvo, antennis albido-flavis basi nigricantibus, pedibus fulvis, 

 tibiis posticis femoribusque nigro-fuscatis, alis cinereis apices versus 

 nigricantibus. Mas. Abdomine fulvo maculis lateralibus nigris. Fam. 

 Abdominis basi lateribusque fulvis. 



Male and Female. Cinereous black. Head in front and caUi of the 

 thorax tawny. Antennae whitish yellow, blackish at the base. Legs 

 tawny; femora and hind tibiae banded with black. Wings grey, black- 

 ish towards the tips ; veins black ; halteres tawny. Male. Abdomen 

 tawny, with some black spots on each side. Female. Abdomen tawny 



7* 



