BY FREDERICK A. A. SKUSE. 247 



cross- vein, not quite reaching wing-margin, its tip situated about 

 midway between tips of third longitudinal and anterior branch 

 of fifth longitudinal fork ; base of latter lying opposite middle 

 cross-vein, its posterior branch half the length of anterior. 

 Eab.—Wdlchu, N.S.W. (Mr. J F. Schofield). April. 



236. Chironomus oresitrophus, sp.n. (PI. xi,, figs. 7 and 8). 



(J. — Length of antennae 0'035 inch ... 0*88 millimetre. 



Expanse of wings 0-090x0-020 ... 2-27x0*50 



Size of body 0-100x0-020 ... 2-54x0-50 



9- —Length of antennae 0-022 inch ... 0-55 millimetre. 



Expanse of wings 0-097x0-027 ... 2-44x0-68 



Size of body 0-100x0-020 ... 2-54x0-50 



(J and <^. — Antennse, head, and palpi brown; basal joint of 

 antennae more or less tinged with ochreous. Thorax brown, with 

 three longitudinal rows of brown hairs; pleurae and pectus brown; 

 scutellum yellowish-brown, sometimes ochreous-yellow; metanotum 

 dark brown. Hal teres brown or yellowish-brown. Abdomen 

 in (J rather more than twice the length of thorax, much shorter 

 in 9 ; densely covered with brownish hair ; brown, the segments 

 sometimes indistinctly bordered posteriorly with ochreous ; $, 

 anal joint and forceps brown ; ^, lamellae of ovipositor ochre- 

 yellow. Legs sordid ochreous-brown, densely clothed with 

 brownish hairs, femora indistinctly darker at apex. Tibial spurs 

 dark brown or black. In fore legs metatarsus about i longer 

 than tibia. Wings longer than abdomen, almost hyaline, a little 

 iridescent, with distinct brown veins. Costal and third longi- 

 tudinal veins meeting at apex of wing ; auxiliary vein reaching 

 costa almost opposite base of fifth longitudinal fork ; second 

 longitudinal vein indistinct, joining costa at a point about ^ the 

 distance from tip of first longitudinal to that of third longitudinal ; 

 latter vein much arcuated posteriorly ; fourth longitudinal vein 

 indistinct beyond cross- vein, almost reaching margin at a point 

 about J the distance from tip of third longitudinal to that 



