COLLECTED AT SINGAPORE AND MALACCA. 
21 
slender, very much longer than the 3rd joint. Thorax hoary, with four 
black stripes. Scutellum tawny towards the tip. Abdomen obconical, 
hardly longer than the thorax, with a broad hoary band on each segment. 
Legs slender, hardly setose. Wings grey, brownish in front ; veins black ; 
prsebrachial vein forming a slightly obtuse angle at its flexure, from whence 
it is slightly curved inward to its tip ; discal transverse vein straight except 
a slight curve by its hind end, parted by much less than its length from 
the border, and by rather more than its length from the flexure of the prse- 
brachial. Alulse white. Length of the body 3 lines ; of the wings 6 lines. 
Singapore. 
G-en. Zambesa, n. g. {Plate I .fig. 2.) 
Mas. Corpus longum, angustum, subeylindricum. Facies verticalis, subre- 
traeta. Facialia nuda. Fpistoma planum. Palpi longiusculi, sat gra- 
ciles. Antennarum articulus 3 U * gracilis, linearis, 2° sexties longior ; aristi 
gracillimA Oculi nudi. Abdomen lineare, thorace multd longius. Pedes 
longiusculi. Alee sat angustse. 
Male , Body long, narrow, almost cylindrical. Face vertical, slightly retracted 
towards the base. Facialia without bristles. Eyes remote, bare. Palpi rather 
long and slender. Antennse extending to the epistoma ; 3rd joint slender, 
linear, rounded at the tip, six times the length of the 2nd; arista very 
slender, rather longer than the 3rd joint. Abdomen linear, much longer 
than the thorax. Legs rather long. Wings rather narrow ; costal vein 
ending at hardly in front of the tip of the wing ; brachial vein joining the 
cubital. 
71. Zambesa ocypteroIdes, n. s., mas. Nigra, capitc albo, frontalibus 
atris, antennarum articulo 3° fulvo, thorace cano nigro-quadrivittato, ab- 
dominis fasciis duabus latis interruptis semihyalinis albido-testaceis, femo- 
ribus testaceis apice nigris, tibiis piceis, alis limpidis, apice margineque 
postico cinereis. 
Male. Black. Head white, with short white hairs beneath ; frontalia deep 
black, linear. Proboscis testaceous. Palpi black. Third joint of the an- 
tennae tawny. Thorax hoary, with four black stripes, of which the outer 
pair are very much broader than the inner pair. Abdomen a little narrower 
than the thorax, with two broad whitish testaceous semihyalme bands which 
are interrupted above. Femora testaceous, with black tips ; tibiae piceous. 
Wings limpid, grey towards the tips and along the hind borders ; veins 
black ; prsebrachial vein forming an obtuse angle at its flexure from whence 
it is slightly curved inward to its tip, which joins the cubital very near the 
border ; discal transverse vein very slightly curved inward, parted by less 
than its length from the border, and by more than its length from the 
flexure of the prsebrachial. Alulse white. Length of the body 5 lines ; of 
the wings 10 lines. 
Singapore. 
Subfam. Dexides, Walk. 
Gen. Dexia, Meigen. 
72. Dexia divergens, n. s. (gen. Thelaira, Peso.), mas. Cana longa an- 
