363 L. de Xiceville A Dr. L. Martin— ButtetiUes of Sumatra. No. 3, 
(Tijd. voor Ent., vol. xxiii. pp. xiii and xiv (ISSO). Alpheraky has figured 
this aberration in Romanoff's “Menioires snr les Lepidopteres." vol. v. 
p. 220, pi. xi, fig. 3, female (1SS9 . from Teneriffe. Mr. Moore records 
this “species ’’ from Singapore; it is almost as common as D. ch ry sip pus 
in the plains of Snmatra. I am unable to consider D. alcippoides, 
Moore, Proc. Zool. Soc. Lond., 1SS3, p. 233, n. 3, pi. xxxi, fig. 1, male , 
as an aberration even to be distinct from the D. alcippus of Cramer. 
It is true that the oblique subapical series of spots on the forewing, 
especially on the underside, appears to be somewhat broader in 
Oriental than in African specimens (I have, however, only Cramer's 
figure of the African form of D. alcippus to guide me', but all the 
other characters given bv Mr. Moore to distinguish between the two 
forms are so obviously variable even in Sumatran specimens that they 
can have no specific value. I hold that D. alcippus is an occasional 
aberration or “sport’' only of D. chrysippus. certainly not a distinct 
species. Dr. Martin during the first years of his residence in Sumatra 
from 1832 to 1391, as also Dr. Hagen, never saw D. alcippus , the 
first specimens appearing in 1892 near Selesseh, immigrating into 
Deli from the north-west. Siuce that year the true D. chrysippus 
has become rarer and rarer, and the aberrational form has become 
more and more common. 
10. Danais ( Salatura ) intermedia, Moore. 
Salatura sumatrana , Moore, Proc. Zool. Soc. Loud., 1SS3, p. 242. n. S. 
Moore as sumatrana. Hagen as genutia . Very common in the 
plains of Sumatra. It is, I think, a very remarkable fact that 
D. plexippus. Linna?us,* which is a common species in the Malay 
Peninsula, should not be found in Sumatra, but be replaced by Z>. inter¬ 
media, which latter in the Malay Peninsula is probably only an aber¬ 
ration or “sport "of D. plexippus. but has become fixed as a distinct 
species in Sumatra. In my collection from the Asiatic mainland I 
have every gradation between typical D. plexippus and D. intermedia. 
I am quite unable to find any character by which to separate D. suma¬ 
trana, Moore, from D. intermedia, Moore. 
* Mr. W. F. Kirby has recently shewn in “ Allen's Naturalist's Library. Lepi- 
doptera,” vol. i, p. 19. pi. v, fig. 1. ma.t (1S94). that the butterfiy which has for the 
last fifteen years or so gone underthe name of Da a is genutia, Cramer ,1779 . must 
revert to the name by which it was previously almost universally known. r$>.. P : : ^ 
plerippus, Linnteus 175S . which latter was described as having a white band 
on the forewing like D. chrysippus. Linn a? us, a character not found in any 
American species of Danais , D. plerippus having been originally erroneously 
described from America. 
