BY FREDERICK A. A. SKUSE. 627 



482. Dynatosoma Sydneyensis, sp.n. (PI. xix., fig. 8). 



5. — Length of antennae 0-045 inch ... 1-13 millimetres. 



Expanse of wings 0-130 x 0-045 ... 3-30x1-13 



Size of body 0-150x0-030 ... 3-30x0-76 



Antennae slender, as long as the head and thorax taken together ; 

 joints of the scapus and base of first flagellar joint oehraceous ; 

 flagellar joints brown, longer than broad, with a hoary pubescence. 

 Front ochreous-brown. Hypostoma and palpi pale yellow. Thorax 

 ochreous-brown, opaque, densely and evenly covered with minute 

 black hairs ; borders setiferous ; pleurae ochreous with brown 

 callosities ; scutellum brown or brownish, with two black setae ; 

 metanotum light brownish or ochreous-brown. Halteres pallid or 

 pale ochreous, with a brownish club. Abdomen deep brown or 

 black, the segments bordered posteriorly with ochreous, densely 

 clothed with short black hairs ; anal segment deep brown or black ; 

 lamellae of the ovipositor elongate, brown. Coxae and femora 

 ochreous or pale ochreous, the femora infuscated with brownish 

 beneath on the basal half ; tibiaj cinereous or brownish ; tarsi 

 black. Tibial spurs black. Intermediate tibiae with a row of 

 small spines on the outer side ; hind tibiae with two rows of strong 

 spines on the outer side. In the fore-legs the tarsi nearly three 

 times the length of the tibise ; the metatarsal joint very slightly 

 longer than the tibiae. Wings pellucid, with a yellowish tint, 

 brilliantly iridescent ; veins dark brown. Auxiliary vein very 

 short, distinct, ending in the first longitudinal vein ; petiole of the 

 fork very short ; the branches of the latter indistinct at the wing 

 margin ; inner end of the second posterior cell opposite that of 

 the marginal cell ; fork of the fifth longitudinal vein divaricate 

 but narrow, its base opposite the inner end of the first posterior 

 cell ; sixth longitudinal vein short, terminating opposite the 

 middle of the anterior basal cell. 



Ilab. — Sydney (Skuse), Five specimens in June. 



Obs. — This species seems to diflfer from the typical European 

 species D. fuscicornis, Meig., and D. nigricoxa, Zett., principally 



