by C. N. Barker. 35 
of the black markings of the upper-surface fore-wings is a distinct 
approach towards the male form. 
Among the tailless varieties or forms, Dr. Eltringham figures tibwllus- 
dorippoides, Trim., from Nairobi, British East Africa, which with a 
great attenuation of the black margins and markings of both wings, and 
the consequent enlargement and semi-coalescence of the sub marginal 
spots of the hind-wings, also shows some approach to the male form. 
It also shows incipient signs of tail development in the prolongation 
of the second median nervule of the hind-wings. The colour, as 
figured, is a tawny shade intermediate between that of the trophonius 
and male coloration. 
Of purely tailless forms the following are figured: cenea-cenea, two 
varieties ; polytrophus-cenea, from the same locality as polytrophus- 
triment; dardanus trophonius, from Victoria Nyanza ; cenea-trophonius, 
from Natal; cenea-hippocoon, from Mombasa; and finally two very 
aberrant types, viz.: dardanus-planemoides, Trim., from Kisumu, and 
dardanus-dionysos, from West Africa. In addition to the types cited 
above there are probably numerous intergrades linking up these local 
forms. 
But what I am concerned with in this paper is to pass a few 
remarks on the specimens contained in the Millar collection of the 
Durban Museum. The cabinet contains twenty female examples of 
the three group forms, dardanus cenea-cenea, Stoll., d. cenea-hippocoon, 
Fabr., and d. cenea-trophonius, Westw. Most are, unfortunately, 
unlabelled as to localities, and in a few cases as to dates of capture ; 
but it can be inferred with safety that all were taken, or bred, in or 
near Durban. 
Numbers | to 6, inclusive, belong to the group dardanus cenea-cenea, 
7 to 12 to that of dardanus cenea-hippocoon, and 16 to 20 to that of 
dardanus cenea-trophonius. Nos. 13 to 15 are very aberrant forms, 
having some of the attributes of both cenea and hippocoon. In the 
coloration of the spots of the fore-wings in reference to those of the 
hind-wings they diverge from both these groups and assimilate with 
that of dardanus-planemordes, Trim. 
No. 1 is a very melanic form in which many of the spots have 
disappeared, and those that remain aré much attenuated. The 
submarginal spots of both wings are entirely absent. The large spot 
of the discal series between the first and second median nervules is 
much reduced and is of the same colour as the premedian band of the 
hind-wings. Dated 15th March, 1910. 
