356 Drs. Dixey and Longstaff’s Observations 
were secured. TZerias was represented by a female 
senegalensis, Boisd., of the usual dry form, but also by a 
male brigitta, Cram., of distinctly wet character—a notable 
exception among so many very markedly dry butterflies.* 
A male and two females of Catopsilia florella, Fabr., were 
secured while feeding on the large-tlowered species of 
Combretum that grows in the Zambesi scrub; this butterfly 
was almost certainly seen more than once on the right 
bank, but eluded capture, for Catopsilia is very swift of 
flight and hard to net save when busy honey-gathering. 
Papilio demodocus, Esp., was taken on the “Knife Edge” 
near the eastern extremity of the Falls. 
Axiocerces amanga, Westw., at Combretum flowers, Zizera 
lysimon, Fabr., and Liptena [Durbania| pallida, Trim., 
were the only Lyczenids brought home, the last taken near 
the top of the Palm Kloof. Between the last-named place 
and the railway bridge large Libellulid dragonflies were 
especially common, and comparatively easy to catch as they 
hovered over the path head to wind, like hawks. The 
commonest would appear to be Pseudomacromia torrida, 
Kirby; but there was also a species of J/acromia as well 
as the slender Pseudagrion ? deckent, Gerst. 
Speaking of the railway bridge, perhaps one may be 
allowed to congratulate the engineer who designed it (Mr. 
G. A. Hobson, of the firm of Sir Douglas Fox and Partners) 
on a structure which seems as well fitted to its position 
alike in form and colour as such a thing can be; one 
shudders to think what might have been placed there by 
less sympathetic hands. 
The only Hymenoptera taken on the left bank were two 
small bees, one at Jpomea, the other Podalirius rapidus, 
Smith, ?, hovering at Combretum flowers, also the coral-red 
Braconid Jphiaulax whitei, Cameron, and a long-waisted 
wasp, Belonogaster guerini, Sauss., var. dubius, Kohl, 9. 
Beetles were few and far between: a Mylabris sp. (or 
? Ceroctis sp.), found (here, as well as on the other bank) in 
the flowers .of Zpomxa, appears to mimic the Longicorn 
Hylomela sexpunctata, Fabr., a beetle that we met with 
only at East London. In the same flowers was another 
beetle, a long narrow purple fellow, not yet named. 
A fly that attracted the attention of one of us by 
* See Drxry, Proce, Ent. Soc. Lond. 1905, pp. lxi-lxii, and 2bid. 
pp. Ixvi-lxvii. Compare Lonestarr on 7. hecube, L., Trans. Ent, 
Soc. Lond. 1905, p. 144. 
