BY P. CAMERON 173 



Como, N.S.W.: in November; (caught on the wing; W. B. 

 Gurney) . 



Head, pro- and mesothorax smooth, furrow in middle of 

 propleuras striated, the apex and that of the mesopleurse 

 crenulated. Base of metanotum with a large central area, 

 twice longer than wide, the basal third of equal width, the 

 apex slightly, gradually narrowed, a closed outer basal, a 

 little longer than wide, the inner side rounded, the outer 

 straight, oblique; and a larger apical one, not closed on outer 

 side : the central smooth at the base, the centre closely punc- 

 tured, the apex irregularly longitudinally reticulated ; the 

 basal lateral finely irregularly punctured, the apical coarsely 

 reticulated, as is also the spiracular from the stigma. Upper 

 third of metapleurfe finely, closely punctured, the lower mqre 

 coarsely pimctured on upper half ; the rest closely, strongly, 

 longitudinally striated. Abdominal petiole slender, long, as 

 long as second and third segments united, its basal third 

 wider than the middle third, the apex roundly dilated, the 

 middle part not quite so long as the post-petiole; the spi- 

 racles at the base of the latter prominent ; two keels run down 

 the top from the basal projections to the middle of post- 

 petiole. Gastracoeli smooth, shallow. The ventral keel ex- 

 tends to the apex of the fourth segment ; there are nine dorsal 

 segments, the penultimate eighteenth, short, the last large, 

 semicircular, with prominent, black, pilose cerci, 



The genus OrfhogtKtfheUa was described by Szepligeti in 

 "Die Fauna Siidwest-Australiens" (Michaelsen and Hart- 

 meyer), 1908, p. 320-322, the type being 0. superba Szep., 

 Taf.lll, f.l. It has toothless mandibles, as in the Heresiar- 

 chinre. It has the head lengthened in fi'ont, pretty much as 

 in the Pimplid genixs Echthro?norpha, bvit with the labrum 

 more prominent. Mr. Szepligeti, however, calls, what seems 

 to be to me the labrum, the apex of the clypeus, which he 

 states is divided into two parts by a furrow, the labrum, 

 according to him, being hidden. I have, unfortunately, not a 

 spare specimen for dissection. y'fCw^ 



LIBRARY ~c 



