286 DIPTERA OF AUSTRALIA, 



brownish markings j darkest spot enveloping middle cross-vein ; a 

 pale one on posterior margin opposite to last ; and a pale fascia 

 starting from anterior margin, filling space between tips of first 

 and second longitudinal veins, and scarcely reaching as far as 

 anterior branch of fifth longitudinal. Veins yellowish-brown. 

 Auxiliary vein directed towards costa, disappearing opposite base 

 of fork of fifth longitudinal ; costal vein extending beyond tip of 

 third longitudinal J the distance from that to tip of fourth longi- 

 tudinal ; second longitudinal bent upwards, pale, running very 

 close to third longitudinal as far as marginal cross-vein ; third 

 longitudinal bent a little downwards towards tip ; middle cross- 

 vein thick, somewhat indistinct, situated a little in advance of 

 posterior cross-vein ; latter slender ; fourth longitudinal very pale. 



Hob. — Lawson, Blue Mountains, N.S.W. (Masters). January. 



Ohs. — Very like the last, but distinguished from it particularly 

 by the wing-markings and pale patch on the pleurae. 



Section III. Ceratopogonina. 



Head small, generally depressed in front, prolonged into a very 

 short rostrum. Eyes lunate, almost reniform. Ocelli wanting. 

 Proboscis more or less porrect. Labrum seated on the upper 

 base of labium, horny, pointed, flat, about the length of labium, 

 sometimes only two-thirds its length. Mandibles seated on the 

 under base of labium, horny, sub-falcate, acuminate, toothed, 

 usually the length of labrum. Palpi originating on both sides of 

 base of labium, 4-jointed ; first joint cylindrical, second generally 

 longer, cylindrical, conical, oval, clavate or orbicular ; third and 

 fourth cylindrical or oval, shorter than second, the fourth longer 

 than second, or both longer. Antennse porrect, filiform, with a 

 varying number of joints, usually 2--f 12-jointed, longer than 

 the head, sometimes almost the length of entire body ; first joint 

 of scapus large, globose or disciform ; second joint of scapus and 

 first seven flagellar joints globose, or ovate to oblong-ovate, sessile 



