(tbe) 
determination of species, especially in Orders other than 
Lepidoptera. Dr. Longstaff’s contribution to the tale of 
specimens brought home was also far larger than his own. 
He had himself devoted more attention to bionomic points 
than to the actual work of collecting, and many of the results 
of the observations of himself and his colleague had been 
already communicated to the Society. 
After shortly sketching the route of the expedition, which 
included visits to Cape Town, Port Elizabeth, East London, 
xlviii] 
Durban, Ladysmith, Johannesburg, Pretoria, Bloemfontein, 
Kimberley, Mafeking, Bulawayo, the Matoppos, and the 
Victoria Falls, he remarked that among the things that chiefly 
impressed him were the abundance of insect life at East 
London and Durban, and the extremely interesting, though 
in their experience somewhat scanty, fauna of the Zambesi 
and the Great Waterfall. 
A point that seemed to him worthy of notice was the fact 
that although Dr. Longstaff and himself were close travelling 
companions, and on many days were never more than half-a- 
mile from each other, the captures effected by each showed 
remarkable differences, there being several instances of quite 
conspicuous forms taken by one which were never seen by the 
other. This was no doubt partly due to differences in their 
objects and methods of collecting, but it applied also to species 
that both collectors were desirous of taking. 
Dr. G. B. Lonestarr stated that out of eight weeks in 
South Africa, two had been spent in railway trains, never- 
theless they had taken some 2,500 specimens,including upwards 
of 50 species of various Orders not to be found in the National 
Collection ; of these at least 15 had already been recognised as 
new to science. In exhibiting specimens of the new species 
together with other South African insects remarkable in one 
way or another, Dr. Lonesrarr gave some account of interesting 
points in their bionomics. For example, at Simon’s Bay, a fly, 
Ploas sp., during life by its habits and mode of flight closely 
mimicked the bee Halictus albifasciatus, Smith, although the 
insect looked very different in the cabinet. The large Acridian, 
Phymateus leprosus, Serv., unlike most locusts, was extremely 
