26 Annals of the South African Museum. 



SYSTEMATIC CONSTITUENTS OF THE FLOEA. 



Orders. Genera. Species. 



Dicotyledons . 95 540 1752 



Monocotyledons . 16 . 129 . 443 



Totj] . Ill 669 . 2195 



Proportion of Monocotyledons to Dicotyledons 1 : 3'95 

 Proportion of genera to species . . . 1 : 3'28 



Predominating Orders. 



Number of Percentage of 

 species. the whole. 



1. Compositae . . . 257 . 11'70 



2. Legumiuosae . . . 255 . 11'70 



3. Grramineae . . . 140 . 6 - 37 



4. Asclepiadaceae . . 119 . ' 5'42 



5. Liliaceae . . . 104 . 4'73 



6. Scrophulariaceae . . 95 4 - 32 



7. Acanthaceae . . . 77 . 3-50 



8. Cyperaceae . 63 2'87 



9. Labiatae . . 57 2'59 



10. Convolvulaceae . . 55 2'50 



11. Rubiacea; 49 . 2-23 



12. Stercnliaceae . 49 2'23 



13. Euphorbiaceae . . 45 2'05 



14. Iridaceae ... 42 1-91 



15. Ficoideae . ' . 41 1-86 



16. Malvaceae 30 1 37 



17. Amaryllidaceae . . 29 1 33 



18. Anacardiaceae . . 28 . 1*27 



19. Amarautaceae . . 28 T27 



20. Orchidaceae . 27 1-23 



21. Verbenaceae . 27 . 1'23 



22. Tiliaceae 25 1-13 



23. Cucurbitaceae . . 24 1-09 



24. Polygonaceae ... 22 I'OO 



25. Selagineae . 22 1-00 



The following are the largest genera : ludigofera (48 species) ; 

 Helichrysum (45) ; Seuecio (36) ; Ipomoea (31), ; Hermannia (29) ; 

 Sutera (27) ; Acacia (26) ; Rhyuchosia (24) ; Asclepias, Eragrostis 

 (23) ; Rhus, Tephrosia (21) ; Blepharis, Schizoglossum (20) ; Cro- 

 tallaria, Mesembrianthemum (19) ; Cyperus (18) ; Andropogon (17) ; 



