400 Mr. G. Meade- Waldo on 



Linn. Bordeaux, xxxiii. p. 171), and these descriptions are 

 reproduced by Friese in ' Bieiien Euro|)a.s,' vol. ii. p. 151. 



Smith's E. tenmnalis, from the south of France, is 

 certainly synonymous. 



Tetralonia, Spin. 

 Key to the Tropical- African Species of Tetralonia, S}>in. 



1. (12) Females. 



2. (5) Segments 1-3 of cabdoraen at least uni- 



colorous, black or fulvous. 



3. (4) Segments 1-3 black, 4 and 5 with [zibar.) 



white pubescence candata, Friese. ( Zan- 



4. (3) Whole abdomen unicolorous fulvous. [(Nyasaland.) 



Length 13 mm shefficldi, sp. u. 



6. (2) Segments 1-5 or 2-5 basally with 

 fasciae of whitish pubescence. 



6. (7) Segments 1-5 basally with fasciae of 



whitish pubescence ; margin of [(]\rozambique.) 



clypeus reddish ohsciiripes, Fr. 



7. (6) Segments 2-5 basally with fusciie of 



whitish pubescence. 



8. (9) Large species : length I55 mm Me«w/, Vach. (Congo.) 



y. (8) Medium species, 9-10 mm. ; margin 



of clypeus yellow. 



10. (11) Scopa brownish ; tegulse yellowish [E. Afr.) 



brown iiiermis, Friese. (Germ. 



11. (10) Sco])a wliitish, brown on inner side; [(Lake Nyasa.) 



t(!gulae reddish yellow ottiliensis, Friese. 



12. (1) Males. 



13. (Ki) Antennae short, scarcely reaching to 



scutellum. 



14. (15) Abdomen with segments 2-5 basally [F. Afr.) 



with fasciae of whitish pubescence . hihrnun, Friese. (Ihit. 



15. (14) Abdomen unicolorous fulvous shcjficldi, sp. n. 



IG. (13) Antennae long, reaching beyond scu- 

 tellum; labrum normal. 



17. (22) Labrum pale, white or yellow or 



yellow with brown sides. [E. Afr.) 



18. (19) Labrum white, wings cloudy incrntis, Fr. (Germ. 



19. (18) Labrum entirely yellow or yellow with 



brown sides. 



20. (21) Labrum entirely yellow, wings hya- [Fr.). 



line fn'esci, n. n. {/idrirdrnin, 



21. (20) Labrum yi'Uow, brown laterally; [Nyasa.) 



wings siiblivaline, subcosta dark . . nijnssana, Str. (Lake 



22. (17) Labrum black or black with pale 



centre. 



23. (20) Labrum black, wings hyaline. 



24. (25) I'ubescence pale; tergite 1 and legs 



densely clothed with black hair. [geria.) 



IO2 mm .ihnjhwtii, up. n. ( N. Ni- 



25. (24) Pubescence entirely pale .y(ist('d/i,Vv. (Kiliman- 



fdjaro.) 

 20. (23) Labrum black, whitish in centre; [Nvasa ) 



wings cloudy ottiliensis, ¥y. (Lake 



