164 
A LIST OF THE BUTTERFLIES OF BORNEO: 
519a. Biduanda hewitsenu var. parva, nov. 
520, 
Dele 
Or 
oOo 
Cas) 
Or 
CaN) 
(Sy) 
Mate. Upperside. Fore-wing: outer half of wing dark 
brown fuscous; basal region, costa and inner margin narrowly 
fuscous; leaving small sub-discal patch of dull violet. /Zind- 
wing: whole of basal and discal region—from costa to inner 
margin—fuscous, leaving small touch of dull violet between 
nervules beyond cell; hind-marginal and anal markings as in 
type form. 
Underside: as in type form. 
FemMaAue. Differs from type form in size and reduction of 
white sub-anal band and white anal markings on upperside of 
hind-wing, which are nearly obsolete. 
Hap. al. 6 and @, 24 mm. Expanse of average male and 
female of type form in Sarawak Museum= 6 29 mm, 2 33 
mm; Druce gives measurements: 6 1:4 to 1:3 inch, 2 1°5 to 
IIE ravelay, 
Kuching (Sar. Mus.). 
The coupling together of these specimens as male and female 
of the same variety is purely guess-work. ‘The single male was 
taken in June 1900 and the two females in October 1909, 
Biduanda staudingerit, H. H. Druee. 
Biduanda staudingeri, H. H. Druce, Proc. Zool. Soc. Lond. 
p. 615, pl. XXXIV. figs. 5 ¢ 376. 2 esa 
Mt. Kina Balu (Waterstradt). 
Biduanda similis, H. H. Druce. 
Biduanda similis, H. H. Druce, t. c. p. 616 (1895). 
Borneo (coll. Druce). 
Biduanda imitata, H. H. Druce. 
Biduanda imiata, Hi. HH. Druce, ¢. 6) poi eee 
Borneo (coll. Druce). 
Genus, MarMessus, Hubn. 
Marmessus moorei, Dist. 
Sithon moorei, Distant, Ann. Mag. Nat. Hist. ser. 5. Vol. 
X. p. 246 (1882). 
Marmessus boisduvalti var. atra, H. H. Druce, Proc. Zool. 
Soc. Womde peo 9 (ekso oye 
Sandakan (Pryer) ; Kina Balu (Waterstradt) ; Lawas and 
Trusan (Everett) ; Labuan (Low and Waterstradt) ; (?) Daat 
Island (Distant) ; North Borneo, Lawas, Limbang, Kuching, 
Tegora and Lundu (Sar. Mus.). 
Distribution: Malay Peninsula and Sumatra. 
I beheve boisduvalii and moorei are but local races cf one 
species which should be known as moorei (the older name). 
The two races may be distinguished thus :— 
Jour, Straits Branch 
