ME. WALKER ON DIPTEEA COLLECTED AT MAKESSAB. 103 



. the base ; fore branch of the cubital vein simple, nearly straight ; 

 halteres ferruginous, with whitish-yellow knobs. Length of the body 

 10 lines; of the wings 22 lines. 



34. Tabanus reducens, n. s. Foem. Cinereo-niger, capite albido, 

 callo nigro longo clavato, palpis albidis, antennis nigris vix dentatis, 

 thorace vittis quatuor cinereis, abdomine vittis tribus albidis, segmentis 

 ventralibus albido marginatis, tibiis fulvis apice nigris, ahs cinereis 

 striga subcostali uigricante, halteribus piceis apice testaceis. 



Female. Cinereous black. Head whitish, clothed with white hairs 

 beneath ; callus black, long, clavate ; palpi whitish ; antennae black, 

 with an extremely small tooth ; thorax with four cinereous stripes ; 

 pectus cinereous ; abdomen with three whitish stripes, the dorsal one 

 much more conspicuous than the lateral pair ; hind borders of the 

 ventral segments whitish; tibiae tawny with black tips. Wings cine- 

 reous, with a blackish sub-costal streak ; veins black ; fore branch of 

 the cubital vein simple, nearly straight ; halteres piceous, with luteous 

 knobs. Length of the body 10 lines; of the wings 20 lines. 



35. Tabanus spoliatus, n. s. Mas. Cinereo-niger, albido tomen- 

 tosus, capite cinereo, palpis testaceis, antennis nigris basi rufescentibus 

 vix dentatis, thoracis lateribus fulvescentibus, abdomine rufescente 

 maculis dorsalibus trigonis albidis, segmentis ventralibus albido mar- 

 ginatis, tibiis rufescentibus nigro lineatis, alis cinereis apud costam 

 fuscescentibus, halteribus albidis. 



Allied to T. univentris and to T. internus, but distinct. 



This may prove to be the male of T. reducens, though it is very differ- 

 ent in appearance. Male. Cinereous black, with whitish tomentum, 

 which is visible when viewed horizontally; head cinereous; palpi tes- 

 taceous, very short ; antennaj black, reddish at the base, with an ex- 

 tremely small tooth ; thorax dull-tawny along each side ; abdomen 

 reddish, with a small triangular whitish spot on the hind border of 

 each segment ; hind borders of the ventral segments whitish ; tibiae 

 reddish with a black hne ; wings cinereous, brownish along the costa ; 

 veins black, ferruginous at the base ; fore branch of the cubital vein 

 simple, nearly sti-aight ; halteres whitish. Length of the body 9 lines ; 

 of the wings 16 lines. 



3*1. Tabanus immixtus, n. s. Fcew. Cinereo-niger, capite albido, callo 

 nigro longo angusto sublineari, palpis albidis, antennis nigris basi rufis 

 vix dentatis, abdomine ferrugineo apice nigro maculis trigonis mar- 

 ginibusque posticis testaceis, tibiis fulvis, alis cinereis apud costam 

 subluridis, halteribus testaceis. 



Female. Cinereous black ; head whitish ; callus long, black, slender, 

 nearly linear ; palpi whitish ; antennae black, red at the base ; tooth 

 extremely small and obtuse ; abdomen ferruginous, black towards the 

 tip ; each segment with a triangular spot and the hind border testa- 

 ceous ; tibiae tawny ; wings cinereous, slightly lurid along the costa ; 



