4] 
versity Collection. Both collections include long series of 
Acraeine butterflies (hitherto excessively rare in European 
collections) from the Victoria Falls (see G. B. Longstaff in 
Proc. Ent. Soc. Lond., Feb. 7, 1906), and Dr. Longstaff’s an 
extremely fine species allied to Memoptera from the same 
locality. 
In addition to the numbers of specimens already mentioned 
and incorporated in the General Collection, both Dr. Longstaff 
and Dr. Dixey presented long series of specimens which 
have been included in the bionomic series. Both collections, 
especially Dr. Dixey’s, are very rich in the material upon 
which bionomic observations had been made during life. 
Thus the pleasant, presumably epigamic, scents of the males 
of certain butterflies, as well as the unpleasant, presumably 
aposematic, scents of both sexes of others, were studied in 
large numbers of examples, constituting a most interesting 
mass of material. Among many specimens specially prepared 
to illustrate the procryptic attitudes of butterflies, Dr. Long- 
staff’s collection includes the four specimens of Zvronia cleodora 
figured in Plate XXV of the 7rvans. Ent. Soc. Lond., 1907. 
These four Eronias, accompanied by a coloured drawing of 
the leaves of the Acanthaceous plant the “ u- Bomaan” 
(Ectimanthus origanoides), upon which the species has been 
observed to rest, and Mr. Horace Knight’s beautiful drawing 
from which the plate was made, have been added to the 
bionomic series. The drawings were also presented by 
Dr. Longstaff. The collections also include a series of 
Lycaenid butterflies, chiefly Dr. Longstaff’s, set in such 
a manner as to display the head-like appearance at the anal 
angle of the hind wing. Dr. Dixey’s collection also contains 
specimens illustrating procryptic attitudes of butterflies, and 
examples showing that the dry-season male of Lelenots thysa 
is a far better mimic of AZylothris agathina than the wet- 
season male. Both collections were drawn upon to provide 
illustrations of procryptic and mimetic colouring in Coleo- 
ptera, as well as further examples of the mimicry of JZjlothris 
by other Prerinae. 
Of the specimens captured by the Professor on the same 
