26 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
opinion that this specimen probably belonged to one or other of the 
species subsequently described under the names dohrni, demeter, or 
maclachlani, all of which like the type specimen of furcata occur in 
Borneo. 
The specimen figured by Martin (1910, fig. 202, p. 198) as the male 
of furcata, from Tonkin, can hardly in Doctor Ris’s opinion (1913) 
belong to that species as it has a well marked T on the frons. For 
the present therefore it must be regarded as an unnamed species. 
The anal appendages are similar in shape to those of certain African 
species. 
GYNACANTHA LIMBALIS Karsch. 
The very large species limbalis known only I believe from a single 
male from Java is not likely to be confused with any of the oriental 
species at present known, on account of its large size, the hinder wing 
measuring according to Martin 61 mm.; and because the wings have 
a costal band of color extending nearly the whole length of the wings. 
There is a T-shaped mark on the frons, and the abdomen is much 
narrowed at the third segment. 
GYNACANTHA NAUSICAA Ris and PENELOPE Ris. 
The remaining species are both from the Celebes and are both de- 
scribed and figured by Ris in Nova Guinea. The first nausicaa has 
a T-shaped mark on the frons. The wings are relatively narrow 
with long triangles. The upper anal appendages of the male grad- 
ually and regularly widened distally, ending in a backwardly directed 
rather blunt apical point. The lower appendage is a little less than 
half the length of the upper pair. The hinder wing is 47 mm. long 
and 13 mm. across. There is only a single row of cells in the field 
lying between M, and M,. The upper anal appendages measure 6 mm. 
The second species penelope has the longitudinal part of the T-mark 
feebly developed or absent. The wings are relatively broad, with 
two rows of cells in the field M,-M,. The upper anal appendages of 
the male have their outer margin regularly convex, not much widened 
distally, and end in a point which is directed rather laterally. The 
hinder wing is 45 mm. long and 13 mm. wide at the nodus. The 
upper anal appendages are 6.5 mm. long, the inferior appendage less 
than one-half as long. 
G. nausicaa has the thorax green, with green and blue markings on 
the abdomen. G. penelope has olive-green markings on the thorax and 
abdomen. Both have light reddish-brown legs. 
GYNACANTHA BAYADERA de Selys. 
One male, Khow Sai Dow Mountain, 305 meters (1,000 feet), Trong, 
Lower Siam, January—February, 1899, Dr. W. L. Abbott, collector; 
collection of the United States National Museum. 
