ME. WALKEB ON DIPTEBA COLLECTED AT MAKESSAB. 107 



nigro fascia basali fascicular! alba apice nigro nitente, pedibus crassis, 

 alis fuscescentibus vitta sordide albida, halteribus fulvis. 

 Female. Black, stout ; head brownish cinereous, very thickly clothed 

 beneath with yellowish cinereous hairs; epistoma very prominent; 

 mystax with a few black bristles above and with many yellowish cine- 

 reous bristles below ; palpi with short black bristles ; 3rd joint of the 

 antennae elongate conical ; thorax with black bristles hindward and 

 along each side ; pectus cinereous ; abdomen brownish black, with a 

 basal band of white tufts ; tip black, shining ; legs very stout ; pul- 

 villi reddish ; wings brownish ; radial areolet with a dingy whitish 

 stripe; veins black; halteres tawny. Length of the body 11 lines; 

 of the wings 22 hues. 



49. Trupanea calorifica, n. s. Mas et Fcem. Ochracea, capita 

 aurato, antennis nigris,thorace vittato, abdomine maculis magnis trans- 

 versis subquadratis nigris, pedibus rufis crassis, tarsis nigris, alis cine- 

 reis vitta sordide albida, halteribus fulvis. Mas. Pectore abdonrine- 

 que cinereis, hujus fascicule subapicali argenteo. Fam. Pectore 

 testaceo, abdomine fulvo. 



Male and Female. Ochraceous ; head gilded in front, thickly clothed 

 beneath ; epistoma prominent ; mystax with numerous gilded bristles 

 and above with a few black bristles ; palpi with short black bristles ; 

 antennae black ; third joint fusiform ; thorax with slender indistinct 

 stripes ; abdomen with a large black transverse subquadrate spot on 

 each segment ; legs red, very stout ; tarsi black ; wings cinereous ; 

 radial areolet with a dingy whitish stripe ; veins black ; halteres tawny. 

 Male. Head with whitish hairs beneath ; pectus and abdomen cine- 

 reous, the latter with a silvery-white subapical tuft. Female. Head 

 with gilded hairs beneath; pectus testaceous; abdomen tawny. 

 Length of the body 9-11 lines; of the wings 18-20 lines. 



Gren. AsiLUS, Imn. 



50. AsiLUS DETERMINATUS, n. s. Mas et Fcem. Cinereo-niger, ca- 

 pite subaurato, antennis nigris, thorace vittis tribus cinereis, pedibus 

 fulvis robustis, femoribus nigro vittatis, tibiis apice tarsisque nigris, 

 alis fuscis, halteribus testaceis. Mas. Abdomine pilis basalibus lu- 

 teis. Foem. Abdomine pilis basalibus cinereis dimidio apicali stylato. 



Male and Female. Cinereous black ; head slightly gilded in front, with 

 pale hairs beneath ; epistoma not prominent ; mystax with many pale, 

 and above with a few black bristles ; antennae black ; third joint lan- 

 ceolate ; arista nearly as long as all the preceding joints ; thorax with 

 three cinereous stripes, the lateral pair dilated towards the humerus 

 on each side ; pectus cinereous ; legs tawny, stout ; femora striped 

 above with black ; tarsi and tips of the tibiae black ; wings brown ; 

 veins black ; halteres testaceous. Male. Abdomen with luteous 

 hairs towards the base. Female. Abdomen with cinereous hairs 



