21 
attacks of birds; from Melsetter, Gazaland, S. E. Rhodesia 
(igor). In one of these cases Mr. Marshall saw the moth 
(a conspicuous Hypsid, Calloratis bellatrix) seized and imme- 
diately dropped by a young and probably inexperienced 
Drongo. The moth has lost most of its head (Trans. Ent. 
Soc., Lond., 1902, pp. 358-9). 
A beautiful group of 16 black white-marked butterflies 
captured by Mr. Marshall in a single day (Nov. 18, 1gor) in 
the forest at Mt. Chirinda, Melsetter (about 4,500 ft.). 
Mr. Marshall considers that these contrasted tints are 
especially adapted for conspicuousness in the shade of the 
forest. The central members of the group are two species of 
the Danaine genus Amauris (4 A. ochlea and 3 A. dominicanus), 
and round these are ranged 5 species of Vymphalinae belonging 
to the 3 genera Neptis, Pseudacraea, and Catuna; 3 species of 
Acraeinae (including the beautiful A. satis, new to the Collec- 
tion) ; and one of Pierinae. 7 
Another group of 8 specimens from the same locality 
captured by Mr. Marshall (Nov. 27 and 28) is similarly con- 
vergent towards the buff-marked black species of Amauris 
(2 A. echeria, 2 A. lobengula). 
The following sets of models and mimics (in many cases 
captured on a single day by Mr. Marshall) and synaposematic 
groups from Gazaland (Nov.—Dec. 1901, and Jan. 1902) and, 
unless otherwise stated, from Mt. Chirinda :—Four Dipterous 
mimics with their Aculeate Hymenopterous models. One of 
these, a beautiful Asilid mimic of a Xylocopid bee was captured 
on the Inyanyadzi River (Dec. 20, 1901). Another very fine 
Asilid mimic of a Fossor of the genus Savus (in this case 
captured a day later) was itself devouring a small Aculeate 
at the time of capture (Dec. 12, 1901). 
A Longicorn beetle with its probable Ichneumonid model. 
A set of 5 Ichneumonidae of more than one species with 
iridescent blue-black wings, resembling each other in the 
possession of a transparent window in a sub-apical position in 
the forewing. 
Nineteen insects (Hymenoptera, Hemiptera, Lepidoptera, 
