306 DIPTERA OF AUSTRALIA, 



beyond middle of anterior border and somewhat beyond tip of 

 posterior branch of fifth longitudinal fork ; second longitudinal 

 reaching costa beyond middle of anterior branch of fifth longi- 

 tudinal fork; extremely indistinct trace of third longitudinal 

 fork ; middle cross-vein long, not very oblique ; anterior branch of 

 fourth longitudinal almost straight, reaching margin at apex of 

 wing, posterior branch detached ; posterior branch of fifth longi- 

 tudinal fork not quite reaching margin. 



JJah. — Sydney and generally in N.S.W. (Masters and Skuse) ; 

 Como, N.S.W. (Dr. Katz). Common from December to April. 



Ohs, — Generally called " Sand-fly," and a particularly annoying 

 insect in many localities. Some specimens in spirit received from 

 Dr. T. Bancroft of Brisbane seem to belong to this species, which 

 is apparently allied to the European C. arcuatus, Winn. 



B. Wings entirely naked. 



287. Ceratopogon tigrinus, sp.n. (PI. xiv., fig. 45). 



^. — Length of antennae 0*015 inch ... 0-38 millimetre. 



Expanse of wings 0-040 x 0-013 ... 101x0-32 



Size of body 0-045 x 0-010 ... M3x0-25 



Antennae, head, clypeus, and palpi black. Thorax brown, dull, 

 with two longitudinal stripes and three irregular lateral spots of 

 ochreous ; sparingly covered with short brown hairs ; pleuraej 

 pectus, and metanotum dark brown; scutellum light brown. 

 Halteres brown. Abdomen short, robust, dusky brown, clothed 

 with brown hairs. Legs brown, tips of femora and tarsi yellowish ; 

 posterior tibiae incrassated. In fore legs tibia somewhat more 

 than twice the length of metatarsus. Wings about length 

 of entire body, hyaline, glabrous, with opaline reflections ; veins 

 distinct, brownish. Auxiliary vein terminating in costa mid-way 

 between base of second longitudinal and tip of first longitudinal ; 

 latter reaching costa somewhat beyond middle of anterior border, 

 and opposite middle of anterior branch of fifth longitudinal fork ; 

 marginal cross-vein situated close to tip of first longitudinal ; 



