20 
mens exhibiting similar symmetrical injuries presented by 
Mr. Guy A. K. Marshall (Trans. Ent. Soc. Lond., pp. 366-375, 
Plates IX-X]I). 
ADDITIONS TO THE COLLECTIONS IN 1904. 
A large collection of many hundreds of butterflies and 
a few other insects collected by natives (1898-9) at Kayambi, 
Awemba, near the sources of the Congo (Chambezi) River, in 
North-Eastern Rhodesia, was presented by H. A. Byatt, Esq., 
B.A., Lincoln College. The specimens were given to the 
donor by Pere Guillemé, of the White Fathers’ Mission to 
Central Africa. Unfortunately exposure to the damp atmo- 
sphere of several wet seasons has altered the pigments, and 
a large proportion of the specimens were also injured by 
mould and the attacks of insect pests. In spite of this, large 
numbers have been added to the collection, although it was 
considered better not to catalogue any of them. Many species 
of great interest and rarity were present ; the most interest- 
ing being a long series (17 specimens) of Pseudacraca poggei, 
one of the most beautiful mimics of Lemzas chrysippus, and 
hitherto looked upon as one of the scarcest. This unexpected 
abundance enabled Mr. Byatt to publish an account of the pro- 
portion borne by the mimic to the model: it came out at 
a little under 5 °/, (Trans. Ent. Soc. “Lond: 1905; pp. 269): 
A single specimen out of 367 otherwise typical ZL. chrysippus 
was a rare monstrosity with 5 wings, shown in Plate XIV, 
fig. I, accompanying Mr. Byatt’s paper. This deeply in- 
teresting mimic, Pseudacraea pogget, is now added to the 
collection for the first time. Another rare mimic also present, 
represented by a single specimen, is Crentdomtmas concordia. 
Considering the interest of the locality and the number of 
rare specimens, it is very unfortunate that the collection had 
‘ been damaged by damp. But even in its present state it has 
added numbers of interesting accessions to the Department. 
An example of the rare hawk-moth, Wephele argentifcra, 
an Asilid fly, and a collection of 128 beetles, all from the 
neighbourhood of Malvern, near Durban, were-presented by 
