( Ixxx ) 
BUTTERFLIES FROM THE SupAN.—Dr. Lonastarr exhibited 
on behalf of Mrs. Waterfield a box of Sudanese Pierine Butter- 
flies taken by her, and communicated her observations thereon, 
VIZ. — 
The following notes give a short account of some of the 
butterflies that I have taken during the last three winters in 
the neighbourhood of Port Sudan. This newly-opened port of 
the Anglo-Egyptian Sudan is situated, roughly speaking, half- 
way down the African coast of the Red Sea, and about 35 
miles north of the older and better-known Port of Suakin. 
Port Sudan is situated on a creek in the fringing coral reef 
which forms a beautiful natural harbour. Its surroundings 
are almost entirely devoid of vegetation except for a few 
thorny acacia trees and such desert plants as can subsist on 
the thin layer of salt earth which covers the old coral reef. 
Where, however, a stream finds its way to the sea, there the 
conditions are improved, and a variety of plants will grow on 
the soil brought down from the hills about 16 miles distant. It 
is in these watercourses—locally termed “‘ khors *’—which are 
dry except for a few days in the year, and in the public gardens, 
a plot of land enclosed in the middle of the town, that my 
entomological studies have been made. 
During the winter months rain falls every few weeks, some- 
times to the extent of 2” or more, and it is after rain that the 
butterflies emerge in numbers. I have not spent a longer 
time in the Sudan than from November to May, so have had 
no opportunity of studying insect life during the summer. 
1. Belenois mesentina, Cr. At times this insect is very 
common, and I have bred it in numbers from larvae taken on 
a bright green-leaved shrub of which the green exactly matches 
the green along the caterpillar’s back. The black and white 
chrysalis is also frequently to be met with, and I think the 
caterpillar must feed on various shrubs. The females seem 
to be particularly sluggish, and can often be caught in the 
fingers as they sit with folded wings on flower or leaf. 
2. Synchloé glauconome, Klug. This butterfly I overlooked 
until Dr. Longstaff pointed it out to me. In 1912 it was 
common in the public gardens. In 1913 I saw it plentifully 
once only, when riding in the desert, but a few days later 
