298 DIPTERA OF AUSTRALIA, 



anterior branch of fifth longitudinal fork ; the latter arcuated at 

 its tip, posterior branch in $ slightly arcuated, in 2 straight, 

 about -J the length of anterior. 



Bab. — Knapsack Gully, Blue Mountains, N.S.W. (Masters and 

 Skuse). 



278. Ceratopogon insignis, sp.n. (PI. xiii., fig. 35). 



^. — Length of antennae 0*017 inch ... 0*42 millimetre. 



Expanse of wings 0-037 x 0-015 ... 0-92x0-38 



Size of body 0-035x0-011 ... 0-88x0-27 



Black ; antennae brown, and legs light umber-brown. Head 

 and thorax dull, with a brown pubescence. Halteres white. 

 Abdomen short, robust, dull, rather densely covered with a brown 

 pubescence. In fore legs tibia rather more than twice the length 

 of metatarsus. Wings longer than the entire body, hyaline, 

 densely covered with brownish-yellow pubescence, iridescent; costal 

 and first two longitudinal veins yellowish-brown. Auxiliary vein 

 not distinguishable; first longitudinal gradually running intocosta 

 somewhat before base of fifth longitudinal fork, and at a point 

 about mid-way between base of second longitudinal vein and tip 

 of costa ; second longitudinal reaching costa a little beyond middle 

 of anterior border, and opposite tip of posterior branch of fifth 

 longitudinal fork ; inner marginal cell extremely narrow, veins 

 almost confiuent ; fork of fourth longitudinal with a short petiole, 

 anterior branch reaching margin at apex of wing, posterior one 

 detached at its base, almost straight, joining about mid-way 

 between tips of anterior branches of fourth and fifth forks ; 

 anterior branch of latter not quite twice the length of posterior, 

 not quite reaching margin, slightly arcuated, posterior branch 

 straight. 



Hab. — Narrabeen Lagoon, near Manly, N.S.W. (Skuse). 



b. Ungues with bristly hair instead of pulvilli. 



1. In hind feet metatarsus longer than second tarsal joint. 

 *■ Second longitudinal vein joining costa at or before 

 middle of anterior border. 



