BY FREDERICK A. A. SKUSE. 633 



with violaceous reflections ; costa, first two longitudinal veins and 

 cross-vein brownish, the rest pale. Venation normal. 



2- — Differs from the ^ as follows : — Head and front with a 

 silvery-white pubescence. Thorax covered with silvery-white 

 pubescence, with three short, broad, dark stripes, the intermediate 

 one traversed by a fine median silvery or golden line. Abdomen 

 tolerably densely covered with silvery-white pubescence, 



Sab. — Waterloo Swamps, near Sydney (Skuse), in June ; near 

 Louth, Darling River, N.S. W. (Helms), several specimeiis in Coll. 

 Australian 3fuseu77i. 



Obs. — This is the second species of the genus described from 

 Australia. It is at once distinguished from S. furiosum, Sk., by 

 the number of joints to the antennae, the clothing of the body and 

 the coloration of the legs. 



Fam. BIBIONID^. 



Genus Bibio, Geoffroy, 

 Bibio, Geoff., I.e., p. 1366, pi. xxxix., fig. 2. 



174. Bibio imitator. Walker. 



Bibio i^nitator, Walk., l.c., p. 1368, p. xxxix, fig. 2, ^. 



Occurs also in Queensland Botanical Gardens, Brisbane (H. 

 Stokes) ; specimen in Coll. Queensland Museum. 



To the synonymy of this species must be added B. elegans, 

 Jsennicke (Abh. Natur. Ges. VI., p. 317, 1867), of which I have 

 now seen the description. 



I have bred specimens of this species in considerable numbers 

 from earth during the month of September. 



Genus Plecia, Wiedemann. 

 Plecia, Wied., I.e., p, 1371, pi. xxxix., figs. 3-6. 



I. The anterior branch of the third vein originating near the 

 small cross-vein, and running alongside the posterior 

 branch ; body black, the disk of the thorax alone more 

 or less reddish. 



