MR. WALKER ON DIPTERA COLLECTED IN AMBOYNA. 161 



bare, stout at the base. Scutellum conical. Abdomen blackish 

 aeneous, a little shorter than the thorax. Wings greyish ; veins black, 

 cubital and prjebrachial veins diverging from the praebrachial trans- 

 verse to the discal transverse vein, parallel from thence till very near 

 the border, where they very slightly converge ; discal transverse vein 

 very slightly curved inward, parted by about half its length from the 

 border, and by very little less than its length from the prajbrachial 

 transverse vein. Length of the body 3 lines ; of the wings 5 lines. 



56. Ophyra reducta, n. s. Faem. Anthracina, puncto capitis albo, 

 palpis antennisque nigris, alis sublirapidis, venis nigris basi testaceis, 

 alulis cinereis testaceo marginatis. 



Female. Coal-black, shining. Head with a white point above the an- 

 tennae. Palpi and antenna; black ; the latter nearly reaching the epi- 

 stoma ; arista bare. Wings nearly limpid ; veins black, mostly testa- 

 ceous at the base ; cubital and praebrachial veins as in the preceding 

 species ; discal transverse vein neai'ly straight and upright, parted by 

 much less than its length from the border, and by much more than its 

 length from the praebrachial transverse vein ; alulae cinereous, with 

 testaceous borders. Length of the body 2^ hues ; of the wings 5 

 lines. 



Subfam. Lauxanides, Walk. 



Gen. Lauxania, Latr. 



57. Lauxania perplexa, n. s. Fcem, Anthracina, nitens, arista 

 subpubescente, abdomine ovato, alis sublimpidis, venis nigris basi 

 testaceis. 



Female. Coal-black, shining. Head as broad as the thorax. Antennae 

 black ; 3rd joint linear, rounded at the tip, reaching the epistoma, 

 four times the length of the 2nd ; arista very minutely pubescent. 

 Abdomen oval, very little longer than the thorax. Wings nearly limpid; 

 veins black, testaceous towards the base; discal transverse vein straight, 

 u[)right, parted by nearly its length from the border, and by nearly 

 twice its length from the praebrachial transverse. Length of the body 

 2 lines ; of the wings 4 lines. 



Subfam. Ortalides, Holiday. 



Gen. Lamprogaster, Macq. 



58. Lamprogaster marginifera. Walk. See vol. iii. p. 111. 

 Acinia faciestriata, Dol. Nat. Tijd. Ned. Ind. 1857. 41G. 



Gen. ZYGiENULA, Dol. 



Mas. Coipus latissimum, turaidum. Caput tliorace latius, genis valde 

 dilatatis. Antennae miniraae ; articulus 3"' conicus ; arista nuda. 



