ilO ■VVALEER ON DIPTERA OF ARU ISLANDS. 



little more than its length from the praebrachial transverse ; halteres 

 testaceous. Length of the body 3^-4^ lines ; of the wings 7-^ lines. 



Geu. Sepedon, Latr. 



117. Sepedon costalis, n. s. .Mas. Cinerea, capite testaceo guttis 

 quatuor nigris, antennis nigris basi testaceis arista alba, abdoniine pe- 

 dibusque fulvis femoribus posticis denticulatis, alis fuscescenti-cine- 

 reis, costa testacea. 



Male. Cinereous. Head testaceous, with a black dot on each side 

 above and two more towards the mouth ; antennae black, testa- 

 ceous at the base, second joint very long, arista white ; thorax with 

 four slender indistinct darker lines, pectus hoary ; abdomen and legs 

 tawny, tarsi piceous, hind femora denticulated ; wings brownish cine- 

 reous, slightly testaceous along the costa; halteres testaceous. Length 

 of the body 4}^ lines ; of the wings 8 lines. 



Subfam. Laxjxanides, Walk. 

 Gen. Latjxania, Zatr. 



118. Lauxania duplicans, n. s. Fcem. Nigro-cyanea, antennis pi- 

 ceis, articulo tertio longissimo, tarsis basi albidis, tibiis intermediis 

 sordide albidis, alis limpidis. 



Female. Blackish-blue, shining. Antennse piceous, third joint very 

 long, reddish beneath, arista bare j legs black, tarsi whitish towards 

 the base, middle tibiae dingy whitish ; wings limpid, veins pale, discal 

 transverse vein white, parted by a little less than its length from the 

 border and by nearly twice its length from the praebrachial trans- 

 verse ; halteres white. Length of the body 2-2^ lines ; of the wings 

 3-4 lines. 



119. Lauxania minuens, n. s. Fcsm. Nigra, uitens, antennis longis 

 arista nuda, tarsis albidis, alis sublimpidis, halteribus albis. 



Female. Black, shining. Third joint of the antennae long, arista bare ; 

 tarsi whitish; wings very slightly greyish, veins pale, of the usual 

 structure; halteres white. Length of the body 1} line ; of the wings 

 2| lines. 



Gen. Lo]S"CHiEA, Fallen. 



120. LoNCH^A? INOPS, n. s. Mas et Fcem. Nigra, nitens, antennis 

 piceis arista plumosa, scutello ferrugineo, tibiis, tarsis halteribusque 

 fulvis, alis subcinereis. 



Male and Female. Black, shining. Antenna3 piceous, third joint short, 

 arista plumose ; scutellum somewhat ferruginous ; tibiae, tarsi, and 

 halteres tawny ; wings slightly greyish, veins pale, discal transverse 

 vein parted by much less than its length from the border and by 

 nearly twice its length from the flexure of the praebrachial. Length 

 of the b.ody 1^ line ; of the wings 3 lines. 



