WALKER ON DIPTEBA OF ARTJ ISLANDS. 87 



greyish, slightly clouded with dark grey, lurid along the costa for 

 three-fourths of the length ; halteres testaceous. Length of the body 

 8 lines ; of the wings 14 lines. 



35. Laphria manifesta, n. s. Mas et Fcem. Fulva, capite argenteo 

 (mas) aut pallide aurato (foem.), antennis apice nigris, thoracis disco 

 et abdominis maculis subtrigonis subseneo-ferrugineis, scutello qua- 

 drisetoso, alis subcinereis. 



Male and Female. Tawny. Head silvery in the male, pale-gilded in 

 the female; mystax with several slender bristles; mouth lanceo- 

 late; third joint of the antennae very elongate-subfusiform, black 

 towards the tip ; disk of the thorax and nearly triangular dorsal spots 

 of the abdomen ferruginous with a slight aeneous tinge ; pectus tes- 

 taceous, shghtly silvery; wings slightly greyish ; veins black, testaceous 

 at the base, where the wings also have a testaceous tinge ; halteres 

 testaceous. Length of the body 4^5 lines ; of the wings 8-9 lines. 



36. Laphria aperta, n. s. Fcem. Testacea, capite subargenteo, 

 antennis abdominisque apice nigris, alis nigricantibus basi limpidis, 

 halteribus albidis. 



Female. Testaceous. Head with whitish shghtly silvery tomentum; 

 mystax with very few bristles ; antennae black, third joint long, linear, 

 conical at the tip ; thorax with a very indistinct darker stripe ; abdo- 

 men black towards the tip ; wings blackish, limpid towards the base ; 

 veins black, testaceous at the base ,- halteres whitish. Length of the 

 body 4 lines ; of the wings 7 lines. 



37. Laphria declarata, n. s. Mas. Fulva, capite albo, facie ar- 

 gentea micante, antennis tibiisque posticis nigris, thorace atro, alis 

 cinereis, venis nigris, halteribus testaceis. 



Male. Tawny, slender. Head white, face brilliant silvery; mystax 

 with four bristles ; mouth black, short, slender ; eyes flat in front ; an- 

 tennae black, almost as long as the breadth of the head ; third joint long, 

 slender, lanceolate ; thorax deep black ; scutellum reddish tawny ; hind 

 tibiae black, with tawny tips ; wings greyish, veins black ; discal veinlet 

 and third externomedial vein forming one straight line, as in the genus 

 Atomosia ; halteres testaceous. Length of the body 3 1 lines ; of the 

 wings 6 lines^ 



Subfam. ASILITES, Walk. 

 Gen. Trupanea, Macq. 



38. Trupanea contradicens, n. s. Mas et Fcem. Nigricans, cine- 

 reo-subtomentosa, thoracis vittis pectoreque cano-tomentosis, pedibus 

 nigris, tibiis rufis apice nigris, alis fusco-cinereis, areola radiali schista- 

 ceo vittata. Mas. Capite subaurato, barba testaceo-albida, abdominis 

 segmentis lutescente marginatis. Fcem. Capite barbaque albidis, ab- 

 domine stylato, segmentis cano marginatis. 



Male and Female. Blackish. Antennae and legs black ; thorax slightly 



