AUSTRALIAN BEES.—COCEERELL. 87 



reticulated area of metathorax described by Smith. The first recurrent nervure reaches 

 the basal corner of the second submarginal cell, but this character doubtless varies. 

 P. elongata Smith is certainly very close, and perhaps not a distinct species ; I now 

 have no elongata to compare. 



An orange patch behind tegulate ; no Hght marks on face ; first abdominal segment 



metallic Palceorhiza viridifrons Ckll. 

 No orange or yellow naark behind tegulae . . . . . . . . . . . . . . 1. 



1. Face with only minute hght marks (National Park, Queensland, Dec, 1919, HacJcer) 



Prosopis nubilosella mediosticta Ckll., $. 

 Face with conspicuous light marks, or all light . . . . . . . . . . . . 2 



2. No lateral face-marks 

 With lateral face-marks 



3. Clypeus all dark 

 Clypeus not all dark 



4. Mesothorax posteriorly closely pxinctvired 

 Mesothorax posteriorly dull and sparsely punctured 



P. sculptifrons Ckll., $ 

 3 



P. daveyi Ckll., 2 

 P. certa Ckll., 2 



5. Clypeus with only a light spot (National Park, Q., Dec, 1919, Hacker) P. aureomaculata Ckll., $ 

 Clypeus light, or nearly all light . . . . . . . . . . . . . . . . . . 6 



6. Scape entirely black . . . . . . . . . . . . . . . . . . . . 7 



Scape light in front . . . . . . . . • . ■ . • . . - • • . . 9 



7. Clypeus low and broad ; abdomen slightly purplish ; yellow patches above tubercles 



Euryglossa aurantifera Ckll. 



Clypeus high and narrow . . . . . . . . ■ . ■ ■ • • • . . • . . 8. 



8. Lateral face-marks going above level of antennae . . . . Prosopis certa Ckll., q-. 

 Lateral face-marks not going above level of antennas .. .. P. quadrata Smith. 



9. Face very nai'row ; small species . . . ■ • • • • • • • • • • • • 10. 



Face broad ; large species P- sculptifrons Ckll., o*. 



10. No supraclypeal mark (Brisbane, 6-10-14, Hacker) . . P. aureomaodata subnubilosa Ckll., (J. 

 Supraclypeal mark present (Brisbane, 26-2-18, Hacker) . . P. aureomaculata Ckll., o- 



The following table separates a series of species which are at least partly 

 metallic, and the scutelluni and postscutellum are not yellow. The specimens of 

 P. albonitens average larger than those from Mackay — 



Thorax black; face entirely black (six from Bribie I., Nov. 1918, Hacker) Prosopis 



cyancomicans nigrescens Ckll. 



Thorax metalHc .. .. .. •• •• •• •• •• •• •• ^■ 



1. Supraclypeal mark present (three from Stradbroke I., Sept. 17, 1915, Hacker; one 



Bribie I., Jan. 1917, Hacker) P. albonitens Ckll., o- 



Supraclypeal mark absent 



2. Clypeus entirely dark; females (two from Stradbroke I., Sept., 17, 1915, Hacker) 



P. albonitens Ckll 



Clypeus at least mainly light; males (Brisbane, 1-9-14 and 8-2-1 G, Hacker; 



Stradbroke I., 2-10-11, Hacker) P. disjuncta Ckll. 



