COLLECTED IN BOBNEO. 121 



3° longi-conico, arista vix longa, abdomine laete viridi segmentis cupreo- 

 fasciatis, pedibus nigris, tibiis testaceis, alis subcinereis, venis nigris, hal- 

 teribus testaceis. 

 Female. Bright greenish-blue, short, broad. Vertex purple. Face and 

 pectus with whitish tomentum. Proboscis black. Antennae black ; 3rd 

 joint elongate-conical ; arista about half the length of the body. Abdomen 

 bright green, with cupreous bands. Legs black ; tibiae testaceous. "Wings 

 greyish ; veins black ; fore branch of the praebrachial vein very much 

 curved; discal transverse vein almost straight. Halteres testaceous. 

 Length of the body 1\ line ; of the wings 3 lines. 



88. Psilopus derelicttts, n. s., mas. Laete cyaneo-viridis gracilis, meta- 

 thorace purpureo, abdomine laete viridi segmentis cupreo-fasciatis, pedibus 

 pallide flavis, alis sublimpidis venis nigris, halteribus testaceis. 



Male. Bright bluish-green, slender. Head wanting. Metathorax purple. 

 Abdomen bright green, with cupreous bands. Legs pale yellow. Wings 

 nearly limpid ; veins black ; fore branch of the praebrachial vein almost 

 rectangular ; discal transverse vein straight. Halteres testaceous. Length 

 of the body If line ; of the wings 3 lines. 



Glen. Dolichoptjs, Latr. 



89. Dolichoptjs electtjs, n. s., foem. Late viridis robustus, capite antico 

 albo, antennis pedibusque nigris, thoracis margine aeneo, abdomine aeneo- 

 viridi maculis lateralibus albo-tomentosis, tibiis spinosissimis obscure tes- 

 taceis apice nigris, alis fusco-cinereis venis nigris, halteribus fulvis. 



Female. Bright green, stout. Head white in front. Antennae black ; arista 

 rather stout. Thorax aeneous in front and on each side. Abdomen dark 

 aeneous-green, with spots of white tomentum along each side. Legs black ; 

 tibiae dull testaceous with black tips, very spinose. Wings brownish-grey ; 

 veins black ; praebrachial vein forming a very obtuse angle, nearly straight 

 from thence to its tip ; discal transverse vein straight, upright. Halteres 

 tawny. Length of the body 2£ lines ; of the wings 5 lines. 



90. Dolichoptjs alligattjs, n. s., mas. iEneo-viridis sat gracilis, capite 

 argenteo, antennis nigris, pectore cano, abdomine obscure aeneo, pedibus 

 fulvis, tibiis subspinosis, tarsis nigricantibus basi fulvis, femoribus poste- 

 rioribus nigris, mediis apice fulvis, alis fuscis sat latis venis nigris, halteri- 

 bus fulvis. 



Male. iEneous-green, rather slender. Head with silvery-white tomentum. 

 Antennae black. Pectus hoary. Abdomen dark aeneous. Legs tawny; 

 tibiae slightly spinose ; tarsi blackish, tawny at the base ; posterior femora 

 black; middle femora with tawny tips. Wings brown, rather broad, 

 darker along the apical half of the costa ; veins black ; praebrachial vein 

 and discal transverse vein straight. Halteres tawny. Length of the body 

 2£ lines ; of the wings 5 lines. 



91. Dolichoptjs collecttjs, n. s., mas. Lsete viridi-cyaneus gracilis, facie 

 perangusta, antennis nigris, abdomine cyaneo-purpureo, pedibus testaceis, 

 tibiis vix spinosis, femoribus posticis nigris, tibiis posticis nigricantibus 

 apice testaceis, alis subcinereis latiusculis apud costam fuscescentibus, hal- 

 teribus testaceis. 



