A frican and Madagascar Flowering Plants . 357 
Bidens pilosa, L. Visited by Pieris hellica. 
Cenia turfoinata, L. 
The fertile florets alternate with the rays, and the branches 
of their styles are directed inwards. Visitors : — Hymenoptera: 
small species (No. 189). Lepidoptera: one sucking. Coleop- 
tera : 3 species. Diptera : Syrphus capensis. 
Cineraria geifolia, L. Visitors: — Diptera: Syrphus cognatus, 
sp. nov., Systocheilus mixtus . Coleoptera : Dicranocnemis 
sallicollis. 
Euryops abrotanifolius, DC. 
Visitors : — Hymenoptera : Alio dap e , sp. nov., Halictus 
albofasciatus . Diptera : Lucilia argyrocephala and small 
kinds very abundant, Scatophaga hottentota , Spilogaster , sp. 
Coleoptera : several species. 
Gymnodiseus capillaris, Less. (Fig. 87 b.) 
The style of the disc-florets ends in a thick conical head, 
at the base of which is a pretty long circle of hairs to hold 
the echinulate pollen-grains. The surface of this cone is also 
roughened (really covered with small hairs) for the same 
reason. Visitors : — Syrphus capensis , also small Diptera, ab. 
Othonna dentata, L . and O. arborescens, L . similar to 
preceding. 
Dimorphotheea annua, Less. 
Visitors: — Hymenoptera: Cosila sp. Diptera: very ab. 
a minute species with elongate head, Lasioprosopa Bigoti , 
Bombylius lateralis , Lucilia argyrocephala , and many other 
species. Coleoptera: Anisonyx ursus , A. longipes , Dichilus 
dentipes , D. simplicipes , and others. 
Tripteris dentata, Harv. and T. ampleetens, Harv. (Fig. 88). 
The styles of the disc-florets end in short blunt conical 
extremities covered all over by little rigid teeth and bounded 
at the base by a circle of much longer hairs. (Hildebrand, 
loc. cit. p. 31, describes and figures Calendula arvensis , in 
which hairs seem to cover the whole of the style-extremity 
in the central florets.) 
