37 
ON NEW AND LITTLE-KNOWN BUTTERFLIES 
FROM NORTH-EAST SUMATRA 
COLLECTED BY HOFRATH Dr. L. MARTIN.* 
By Lionet ve Nicr'vitiz, F. E.8., C. M. Z.8., &e. 
‘ (With Plates K, L, and M.) 
All the butterflies described below were obtained by Hofrath 
Dr. L. Martin in North-East Sumatra, the rarer ones almost entirely 
from the little-known Battak Mountains. Dr. Martin has already 
enriched my collection with 265 species from Sumatra, and has sent me 
a list giving the names of 324 species contained in his own collection. 
All of these were collected within a comparatively small radius, so that 
it may probably be safely assumed that when the whole island is 
explored and thoroughly collected over, it will be found that fully 600 
species inhabit it, of which perhaps 50 may be endemic. The only 
papers of which I am aware written solely on the butterflies of Sumatra 
are by Heer P. C. T. Snellen, and are as follows :— 
I, “Tijdschrift voor Entomologie,” vol. xx, p. 65 (1877), enu- 
merating 35 species. 
I]. “Tijdschrift voor Entomologie,” vol. xxxiii, p. 215 (1890), 
enumerating 48 species. 
III. “ Midden-Sumatra, Lepidoptera” (1892), enumerating 104 
species. 
Family NYMPHALID Ai, 
Subfamily Danamnz. 
1, DANAIS (Caduga) TYTIOIDES, n. sp., Pl. K, Figs. 1, #; 2, 9. 
Hasrrat : Battak Mountains, Sumatra. 
EXPANSE: @, 3'2 to 3°5; Q, 4:0 inches, 
Description : Matz, Upprrsrpe, forewing black, with the following pale 
bluish hyaline markings :—the posterior half of the discoidal cell bearing 
anteriorly and outwardly a fine black line ; two small oval costal spots divided 
by the second subcostal nervule ; followed by a very short and narrow streak in 
the subcostal interspace ; then another streak twice as broad and three times as 
long as the one above it in the upper discoidal interspace ; an oval spot in the 
lower discoidal interspace ; two nearly equal-sized spots in the upper median 
interspace, the outer spot rectangular, the inner triangylar ; two similar Spots in 
the lower median interspace, except that the inner spot of the two is twice as 
large as the outer one; a very large streak occupies nearly the whole of the 
* A short preliminary description of the new species described in this paper ap- 
peared in vol. vii, page 555, of this Journal. 
