COLLECTED AT DOUEY, NEW GUINEA. 249 



Mas. Caput thorace valde latins ; faeies brevissima, latissima. Fam. 

 Cpput thorace paullo latins. 



Male and Female. Body rather broad. Head very short. Mouth and 

 palpi small. Antennae not near reaching the epistoma; 3rd joint 

 linear, rounded at the tip, four times the length of the 2nd ; arista 

 plumose. Abdomen much narrower, but little longer than the thorax. 

 Legs moderately long and slender. Wings shghtly dilated; costa 

 convex ; radial vein curved, joining the costa at rather beyond two- 

 thirds of the length of the latter ; cubital and prsebrachial veins slightly 

 undulating; discal transverse vein slightly undulating, emitting a 

 stump outward in front, parted by one-fourth of its length from the 

 border and from the prsebrachial transverse ; the latter oblique, almost 

 straight, rather long. Male. Head much broader than the thorax ; 

 face and epistoma extremely short and broad. Female. Head a little 

 broader than the thorax ; face extremely short ; epistoma large. Wings 

 rather less ample than those of the male. 



65. PoTicARA TRiARCUATA, n. s. Mos et Foem. Nigro-cyanea, capite 

 fascia rubra, scutello postico rufescente, abdomine fusiformi, pedibus 

 nigris, femoribus flavescenti-albis, alis albidis, linea costali disco radiis- 

 que nigris. 



Male and Female. Dark blue, with tomentum somewhat sericeous ; 

 front with a deep-red band ; antennae transverse, sutm-e of the thorax 

 and hind part of the scutellum reddish; pectus shining; abdomen 

 fusiform, shining towards the tip; legs black; femora yellowish white, 

 black towards the tips ; wings whitish limpid, with a black line along 

 the exterior part of the costa ; disk irregularly black, emitting four 

 black hnes to the costa, the fourth joining the costal line ; two black 

 curved lines proceeding from the disk to the hind border, parallel to 

 the costal line ; veins and halteres black. Male. Face and epistoma 

 yellowish white. Female. Face and epistoma reddish. Length of 

 the body 4 lines ; of the wings 8 lines. 



Gen. Mtstia, n. g. 



Mas, CorpMS latiusculum. Ca/raMhorace vix latius ; frons depressa ; 

 faeies latissima ; gense tumidaj. Antenna; epistoma. non attingentes ; 

 articulus 3"' lanceolatus, 2° quadruplo longior ; arista plumosa. Ab- 

 domen ovatum, thorace paullo brevius vix latins. Pedes robusti. 



Male. Body rather broad. Head hardly broader than the thorax; 

 front depressed ; face very broad ; epistoma slightly prominent ; genae 

 tumid. Mouth large. Antennae not reaching the epistoma ; 3rd 

 joint lanceolate, full four times the length of the 2nd; arista plumose. 

 Scutellum prominent. Abdomen oval, a little shorter, but hardly 

 broader than the thorax. Legs stout. Wings moderately broad; 

 prsebrachial vein slightly angular at its junction with the praibrachial 

 transverse vein ; the latter straight, not oblique, parted by one sixth 

 of its length from the border, and by a little more than its length 

 LINN. PROC. — ZOOLOGY. 17 



