74 DIPTERA OF AUSTRALIA, 



brownish-fulvous, dull, traversed by two rows of yellowish hairs. 

 Halteres brown (fulvous in old specimens). Abdomen dull black 

 or brown, with the first one or two segments, the venter, and ovi- 

 positor fulvous or brownish-fulvous. Legs fulvous, with the tip 

 of femora, apical half of tibiae, and entire tarsi, black. Wings 

 blackish (much paler in old specimens), the costal cells and stigma 

 darker than the rest; veins black. Auxiliary vein running close to 

 first longitudinal vein, joining it about 02)posite inner end of second 

 sub-marginal cell; first longitudinal terminating in anterior branch 

 of second longitudinal vein near the base ; petiole of first sub-mar- 

 ginal cell sometimes as much as twice the length of the anterior 

 branch ; petiole of second posterior cell short (in one specimen 

 extremely short) ; discal cell usually squarish, longer than broad, 

 almost or quite in punctiform contact with fifth posterior. 



Hah. — Upper Hunter, N.S.W., and Gayndah, Q. (Masters) ; 

 Mount Kembla, Illawarra District (Skuse). November. Four 

 specimens. 



Ohs. — Macquart did not know to what country this insect 

 belonged, but conjectured that it was probably Australia. 



Genus 4. Clytocosmus, gen.nov. 



Anterior branch of second longitudinal vein originating from 

 that vein a little beyond the termination of the first longitudinal 

 vein and not appearing as the continuation of it. Rostrum long, 

 directed downwards, without a nasus. Antennae 13-jointed ; in 

 (J first nine, in 9 first eight, flagellar joints provided with two 

 short branches, which are much shorter in the 9 than in the ^ ; 

 the terminal joints irregularly beset with almost erect hairs. ^ 

 genital organs probably of complicated structure, withdrawn into 

 the anal segment ; Q ovipositor with long, straight, valves. 



Head closely applied to the thorax ; front broad, flattened, at a 

 right angle with the plane of face and I'ostrum, with a sparse, scarcely 

 noticeable pubescence (PL iv., fig. 5c). Rostrum longer than the 

 head, glabrous ; nasus wanting. Eyes round, rather prominent. 

 Palpi short; first three joints of almost equal length, the third rather 



