500 Air. R. Trimen on Mr. Millar's Exiicrimental 
covery in Natal in the year 1873, E. deceptor has hitherto 
remained very much rarer tliere tlian wahlhergi and 
mini a. 
The obviously intimate affinity of. these three forms of 
Enralia in Natal was brought to notice by me as far back 
as 1873 in the “Transactions” of the Society; together 
with a note of the fact that E. minia $ and E. wahlhergi ^ 
had once been taken paired. Although, in the long interval 
since that date. Air. Alillar, Air. C. N. Barker, Air. Guy 
A. K, Alarshall, and other entomological observers in 
Natal, have called attention to a few other cases of the 
pairing of the latter two forms, as well as to various 
details of habits, distribution, etc., which supported the 
view of their species-identity—no advance of importance 
had been made towards settling the question until the 
earlier part of last year, when Air. Alillar, having ascer¬ 
tained their common food-plant, resolved to test the case 
by breeding from the ova of all three forms. 
First Experiment. — Offspring reared from ova laid hy 
two examples of Euralia deceptor. 
The food-plant—a species of stinging-nettle identified 
by Air. J, Aledley Wood as belonging to the genus Fleicrya 
—was potted and enclosed with netting, so as to be at 
hand for the safe rearing of the anticipated larvae. On 
Alarch 21, 1909, at Alount Edgcumbe, near Durban, two 
$ ^ A', deceptor were captured in the act of ovipositing, 
and placed on the net-covered food-plant, where they 
together during the 24th and 25th laid 139 eggs, from all 
of which the larvae Avere hatched by Alarch 29. On the 
31st the young larv^ae were dark-brown, except towards each 
extremity, where the colouring was pale semi-transparent 
greenish-yellow, and they Avere closely covered throughout 
Avith minute dark spines. On April 5, after moulting, the 
body generally had changed to shining-black, and the 
strong spines toAvards the front of each segment, as Avell 
as the pair of long spines or horns on the head, Avere 
developed ; but not until the 15th, after the final moult, 
Avas the full colouring and development attained, in which 
the body Avas velvety-black Avith segmental very narroAv 
anterior elevated pale-yellowish transverse bands or half¬ 
rings, bearing numerous acute spinulose brownish-yelloAv 
spines, and the head AA^as shining yellowish-brown, with 
the two long divergent spinulose spines or horns black. 
The change to pupa began on April 19; 60 pupae were 
