450 Mr. G. Meade- Waldo on 



types of H. atroviridis, which species, however, must 

 become a synonym of H. cethiopicus, Cam. {vide infra). 



Halictus cethiopicus, Cam. 



Halictus athiopicus, Cam. Traus. S. Afr. Phil. Soc. xv. p. 239 (1905), 

 Salictus atroviridiSf Cam. /. c. xvi. p. 326 (1906), 



Both these species were described from Pearston, Cape 

 Colon}--, and the types of both are in the British Museum. 



Key to Ethiopian Halictus in the British Museum. 



22- 



1. (8) Abdominal tergites with pale tegu- 



mentary fasciae. 



2. (5) Larger, more robust species, the fasciae 



rather broad. Length 10-12 mm. 



3. (4) Face clothed with griseous pubes- 



cence. Length 12 mm albofasciatusj Smith. 



[(S. Africa.) {^=-Para7ioinia broomi, Cam.) 



4. (3) Face clothed with smoky pubescence. 



Length 10 mm vittatus, Smith. (Cape 



5. (2) Smaller, more slender species, the [of Good Hope.) 



fasciae linear. Length 7-8 mm. 



6. (7) Tergites 1-4 with narrow apical fasciae [Kiiby. (Socotra.) 



pale yellow flavovittatus, W. F. 



7. (6) Tergites 1-5 with narrow white [(Transvaal.) 



fasciae albolineolus, Cam. 



H. tricolor (Cam.), H. nomioides, Friese, and its var. grandior, Friese, 

 come in here. 



8. (1) Abdominal tergites with pubescent 



fasciae. 



9. (10) Tegument brassy green, pubescence [Africa.) 



pale yellow jiicundtis, Smith. (S. 



H. niloticus, Smith, from the White Nile, is a male with brassy-green 



tegument. 



10. (9) Tegument black, some segments at 



least with griseous ftiscise. 



1 1 . (24) Larger species. Length at least 9 mm. 



12. (13) Cl^'peus apically truncate, with a dis- 



tinct tooth ou each side at apex ; 

 tergites 1 and 2 with interrupted 

 apical fasciae of pale pubescence; 

 hind calcar toothed. Length 10 mm. 

 (Cape of Good Hope.) deceptus, Smith. 



13. (12) Clypeus without any teeth at apex ; 



tergites 1 and 2 at least with com- 

 plete fasciae of pale pubescence ; 

 hind calcar toothed or not. 



14. (15) Hind calcar with three teeth ; tergites 



2-5 with pale fasciae. Length 



10 mm. (Natal.) diversvs, Smith. 



