BY FREDERICK A. A. SKUSE. 305 



costa considerably beyond middle of anterior border and beyond 

 tip of posterior branch of fifth longitudinal fork ; second longi- 

 tudinal joining costa opposite middle anterior branch of fifth 

 longitudinal fork ', indistinct trace of third longitudinal fork ; 

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

 longitudinal nearly straight, reaching margin somewhat below 

 apex of wing, posterior branch detached, indistinct ; branches of 

 fifth longitudinal fork disappearing before the margin. 



Hob. — Sydney and several localities in N.S.W. (Masters and 

 Skuse). 



Ohs. — A very common insect. Some smaller specimens obtained 

 by Mr. Masters at Blue Mountains differ in darker body and 

 somewhat in wing-spots, but as they are not in good preservation 

 I cannot say if they belong to this species. 



286. Ceratopogon molestus, sp.n. (PI. xiv., fig.* 44). 



9. — Length of antennae 015 inch ... 0*38 millimetre. 



Expanse of wings 0-045 x 0-020 ... 1-13x0-50 



Size of body 0-050x0-015 ... 1-27x0-38 



Deep brown, the legs lighter brown. Thorax with a dull greenish 

 tinge, sparingly covered with yellow hairs. Halteres more or less 

 yellowish. Abdomen short, clothed with yellowish hairs. Tarsi 

 more or less yellowish. In fore legs tibia more than tw^ice the 

 length of metatarsus. Wings about the length of entire body, 

 pellucid, greyish, brownish between tip of second longitudinal and 

 costal from opposite base of fifth longitudinal fork, and with several 

 hyaline spots ; the spots very much as in C. inarinoratus, except 

 that there are two immediately above anterior branch of fourth 

 longitudinal fork, and the spot in fifth longitudinal fork does not or 

 scarcely touches wing-margin ; brilliantly iridescent when viewed 

 at a certain obliquity ; moderately covered with yellow hairs ; 

 veins brownish-yellow. Auxiliary vein indistinct ; first longi- 

 tudinal curved gently upwards to the costa, joining considerably 

 20 



