BY FREDERICK A. A. SKUSE. 249 



238. Chironomus brevis, sp.n. (PI. xi., fig. 9). 



9. — Length of antennae 0'017 inch ... 0*42 millimetre. 



Expanse of wings 0-057x0-015 ... 1-44 x 0-38 



Size of body 0-050 x 0-010 ... 1-27x0-25 



Antennae light brownish-ochreous; basal joint very pale ochreous- 

 yellow. Head, clypeus, and palpi brownish-ochreous, the latter 

 palest. Thorax umber-brown, with two longitudinal rows of brown 

 hairs ; pleura? and pectus umber-brown, more or less tinged with 

 pale ochreous-yellow ; scutellum ochreous-brown, fringed with long 

 brown hairs ; metanotum dusky umber-brown. Halteres dusky, 

 base of the stem pale. Abdomen short, robust, dusky umber- 

 brown, rather densely clothed with a short brown pubescence • 

 lamellae of ovipositor ochreous-yellow. Legs pale ochreous-yellow, 

 with a pale pubescence. Tibial spurs black or deep brown. In 

 fore legs metatarsus rather more than ^ longer than tibise. Wings 

 longer than body, pellucid, with brassy reflections ; costal and first 

 and third longitudinal veins light brown, distinct, remaining veins 

 fairly distinguishable. Costal and third longitudinal veins meeting 

 at apex of wing ; auxiliary vein very pale, joining costa somewhat 

 beyond middle cross-vein; second longitudinal scarcely distinguish- 

 able, running close to first longitudinal ; fourth longitudinal much 

 paler beyond middle cross-vein, very little bent, its tip nearer to 

 tip of costal than to tip of anterior branch of fifth longitudinal 

 fork; posterior branch of the latter J the length of anterior branch. 



Hab. — Sydney (Skuse). A single specimen. 



b. — Wings S2:)0tted. 



239. Chironomus nubifer, sp.n. 



(J. — Length of antennae 0-055 inch ... 1-39 millimetres. 



Expanse of wings 0-140x0-040 ... 3-55x1-01 



Size of body 0-200x0-033... 5-08x0-84 



9 — Length of antennae 0'025 inch ... 0.62 millimetre. 



Expanse of wings 0-140 x 0-040 ... 3-55 x 1-01 



Size of body 0-120x0*027 ... 3-04x0-68 



