1894.] L. de Niceville — Butterflies from the Indo-Malayan region. 19 



margin ; the outer margin itself narrowly fuscous. Hindwing with an 

 indistinct sub-basal black line ; a second line from the costa losing itself 

 in the abdominal region ; the third and fourth lines exceedingly fine, on 

 either side of the disco-cellular nervules ; the fifth line from the costa 

 ending in the abdominal region ; the sixth line answering to the eighth 

 line in the forewiug, and like it fuscous, not deep black, extends from 

 the costa, and runs into the ninth line in the first median interspace ; the 

 seventh line narrow, jet-black, from the costa to the first median nervule ; 

 the eighth line, composed of six detached portions, commences posterior 

 to the first subcostal nervule and ends at the first median nervule ; the 

 ninth line extremely narrow and deep black, from the costa to the first 

 median nervule; the tenth line broad, rather diffused, fuscous, sub- 

 marginal ; the eleventh line fine, deep black, following the margin ; 

 the outer margin itself narrowly fuscous : the usual large rounded 

 clump of confused bluish and black markings at the anal angle anterior 

 to the large anal lobe ; a small round black spot encircled with whitish 

 anterior to this clump, placed just within the second angle made by the 

 abdominal margin ; the anal lobe rich fulvous centred with a black spot. 

 Underside, both goings much paler than on the upperside ; the markings 

 very similar but usually paler. Foreiving with a quadrate whitish 

 patch on the inner margin between the eighth and ninth lines. Hind- 

 toing, anal lobe with the central black spot much larger than on the 

 upperside. 



G. theresce is an abundantly distinct species, and comes into the gToup 

 containing C. thyonneus, Cramer, which I possess from Celebes ; C tabula^ 

 de Niceville, from Great Nicobar Island ; and C. lutea, Zinken-Sommer, 

 which is common in Java. In size it agrees with G. hitea. In the 

 coloration of the ground of the upperside it is nearest to G. tabula, but 

 is rather lighter, it is much darker than G. lutea, lighter than G. thyon- 

 neus. The tail to the hindwing is less than half as long as in either of 

 the above-mentioned species. In markings it agrees best Avith G. thyon- 

 neus, but differs in many details, as, for instance, the seventh and ninth 

 lines on the hindwing in that species are dark metallic steel-blue, in 

 G. theresce they are black without any metallic lustre. 



Described from an unique specimen in Dr. L. Maz'tin's collection, 

 taken in the virgin forest of Selesseh, on the 21st May, 1893 ; also from 

 another example from Borneo given to me by Dr. Martin. At his sug- 

 gestion I name the species after H. R. H. the Pi'incess Therese of 

 Bavaria, daughter of the Prince Regent, who is a student and lover of 

 Natural History. 



