374 L. de Niceville & Dr. L. Martin — Butterflies of Sumatra. [No. 3, 
Wallace; also Papilio butleri , Janson, in both sexes mimicks both sexes 
of this Euploea. The scent of Euploea linnsei reminds Dr. Martin of 
“ Worcester Sauce.” The males are variable; in one variety the spots 
on the upperside of the forewing are violet, in another they are white. 
These latter specimens would appear to agree with E. mulciber , Cramer, 
described by him from China and the Coromandel Coast (the latter 
locality is certainly erroneous), but restricted by Moore to the islands 
of Borneo and Billiton. My male specimens of Trepsichrois from Borneo 
do not at all agree with Cramer’s figure of “ Papilio ” mulciber , having 
the spots on the upperside of the fore wing very small (much smaller 
than in typical E. linnsei ) and violet, instead of large and white as 
portrayed by Cramer. 
34. Euplcea castelnaui, Felder. 
Hagen. Never occurs in Deli, Langkat and Serdang, all the 
specimens from Sumatra—about a dozen—in Dr. Martin’s collection 
were caught by his brother, Dr. Friedl Martin, in Asahan, south of our 
area; still further south of Asahan, at Indragiri, where Dr. F. Martin 
also collected, he failed to get E. castelnaui. At Penang it occurs 
close to the sea-shore, but it flies high and is not easily caught. It is 
always solitary, several specimens are never seen together. 
35. Fuplcea (Galliploea) eunus, de Niceville, n. sp. 
Grose Smith as ledereri and mazares. Hagen as ledereri. Moore 
as ledereri. Staudinger as mazares. 
Habitat : N.-E. Sumatra. 
Expanse: tf, 2*5 to 2 9; 9 , 2*7 to 3'0 inches. 
Description: Male and female. Allied to E. ( Galliploea ) mazares , 
Moore, from Java, but differing therefrom in having the upperside of 
both icings almost entirely unglossed with purple, while that species has 
the anterior two-thirds of the forewing and a small patch in the middle 
of the hindwing purple-glossed; the white, violet-glossed spots on both 
wings the same. 
E. eunus , de Niceville, from Sumatra, E. mazares , Moore, from 
Java, E. ledereri , Felder, from the Malay Peninsula, and E. aristotelis , 
Moore, from Borneo, can be arranged in a regular series by the extent 
of the purple-glossing of both wings on the upperside, E. eunus being 
the least, E. aristotelis the most purple-glossed; the latter, indeed, if I 
have correctly identified it, having the whole of the forewing and a 
considerable area on the hindwing very rich iridescent purple. 
This species is never found at high elevations, not even as high as 
Bindjei, but always close to the sea. It is very plentiful on 
