1930 ] 
Australian Bees 
143 
Megachile mystacea (Fabr.) 
3 2,2 $ , Halifax ( Williams ) ; 1 2 , Brisbane, March 24 
( Williams ) . 
Megachile ustulatiformis Cockerell 
2 $, Halifax, June 1-17, and June 20-July 9. (Williams ) . 
Megachile hilli Cockerell 
2 2, Halifax, June 1-17 and July 11-20 (Williams ) . 
When describing M. hilli, I wrote: “I had to consider 
whether this could be the female of M. ustulatiformis, and, 
while this is possible, it appears improbable.” The present 
specimens, collected in the same locality, lend support to 
the view that these are sexes of one species. 
Megachile pictiventris Smith 1 
1 2, Babinda, April 18 (Williams ) . 
Megachile cincturata Cockerell 
2 2, Cairns, April 1-12 (Williams) . 
Megachile ignescens Cockerell 
1 2, Halifax, June 1-17 (Williams) . This had been la- 
belled pictiventris, but is easily separated by the abdominal 
hair-bands. 
Megachile lucidiventris Smith 
1 2, Sydney, N. S. W. (Williams). This is very like M. 
suppresipennis Ckll., but easily separated by the denticulate 
lower margin of clypeus. 
iReviewing my material of M. pictiventris, I find I have confused 
with it a different 9 , taken by Turner at Mackay, Queensland, in 
January, 1900. It is distinctly more robust, and the beautifully metallic 
(green and purple) abdomen has white hair-bands, weak or failing in 
middle. The light hair of face is white (not at all yellowish), and 
the abdomen, seen from above, shows no outstanding black hairs 
toward the apex; characters which separate it at once from M. 
igenescens. This beautiful species may be called Megachile rowlandi 
n. sp., after Rowland Turner. 
