LEPIDOPTERA, FAM. DANAIDAE. 51 
The specimens from Simalur do not differ from those from 
Sumatra and Nias, which latter are moreover darker 
coloured. 
4. Danais melanippus Cram. nov. var.? Edwardi. 1 {. 
No. 6076. 
Hab. Sibigo (Simalur), 8/1913. 
It is a pity, that Mr. Jacobson has captured only one 
specimen of this very interesting variety or aberration. If 
later on more specimens will be sent over from this island, 
this lonely butterfly will most likely proof to belong to a 
variety peculiar to the fauna of Simalur. 
The habitus is quite that of D. melanippus from Suma- 
tra, also the size is the same, but colour and pattern are 
different. The orange strigae of melanippus are changed 
into narrower red ones, like those in the variety from 
Engano (Pietersi Fruhst.) and from Nias (eurydice Butl.). 
In the cell is a triangular white spot; all the intranerval 
white spots are present, but much larger than in mela- 
nippus, Where the last one between media and analis has 
disappeared. The posterior wing is on the upperside like 
that of D. melanippus, only the colour is more whitish 
and without brown in the intranerval white strigae. 
The anterior wing is on the underside paler coloured 
than on the upperside, but shows the same pattern. The 
white spot in the cell is also present. The apex is red- 
brown, which colour is also more widely spread over the 
wings. The pattern and colour on the underside of the 
posterior wing are like those of melanippus. 
I think this form to be a transitional one from mela- 
nippus to eurydice, but the presence of so much white 
calls in mind PD. lotis Cram. from Borneo and Celebes. 
D. lotis Cram. is a good species, because it possesses 
other anatomical characters. 
5. Danais chrysippus Linn. 5 6’, 7 9. Nos. 6077 
—6088. 
Hab. Sinabang (Simalur), 3/1913. 
Notes from the Leyden Museum, Vol. XXXVI. 
