f02 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXl^IIl. 
6. Macromia flavocolorata, sp. nov. 
A single female from Hasimara, Duars, Bengal, collected by Mr. H. V. 
O’Donel. 
Abdomen 43 mm. Hindwing 38 mm. 
Although the male of this insect has not yet been found, the markings of the 
female are so striking and different from other species of the genus that I have no 
hesitation in regarding it as new 
It resembles M. cingulata by its brilliant clearly defined markings and is evi- 
dently allied to that species which has hitherto stood alone in a monotypic 
group, but there is no possibility of confusing the two. 
The facial and abdominal markings differ widely from cingulata and the new 
species is a much larger insect. 
Head. Labium with the lateral lobes brown, the base naiTOwly yellow, mid- 
lobe yellow, its border and a medial prolongation backwards bro^vn; labrum 
shiny black with a transverse, bright citron yellow spot at its base ; frons and 
face metallic bluish green with a broad, citron yellow spot traversing the epistome; 
vesicle and occiput black ; eyes bluish green. 
Prothorax small, yellowish. 
Thorax metallic greenish blue marked vith citron yellow as follows : — The 
antealar sinus and middorsal carina finely moderately broad, antehumeral 
stripes not quite reaching the alar sinus ; laterally a broad, medial stripe and the 
posterior third of the metepimeron. Beneath white marked with 3 black, 
triangular spots arranged in a fteur-de-lys. 
Abdomen tumid at the base, somewhat compressed, dilating again from the 
7th segment, glossy jet black marked with clear, well-defined citron yellow marks 
as follows ; — 1st segment wholly citron yellow save for a narrow, dark, apical 
annule ; 2nd segment similar but the annule rather broader, narrowing laterally 
and then sending a prolongation forwards beneath, on the dorsum the yellow 
invading it slightly ; 3rd segment with a basal, subdorsal, linear spot and a medial, 
smaller, subquadrate, dorsal spot finely separated from its fellow by the black, 
dorsal crest. These medial spots repeated on segments 4, 5 and 6, hut growing 
progressively smaller. On segment 7 the dorsal spots coalesce to form a very 
large, quadrate basal, spot occupying nearly half the segment and throwing a 
small projection analwards on either side of the dorsal crest. Segment 8 has a 
small, round, subdorsal, basal spot and a quadrate spot low down on the side 
at the basal end ; 9 and 10 are unmarked. 
Wings very patchily enfumed, with some slight evidences of dark saffronation 
at the extreme base ; stigma small, black ; 5 cubital nervures in the forewing, 
4 in the hind ; hypertrigones traversed 2-3 times in the forewing, twice in the 
9-15—15-6 
hind ; nodal index : — 
9-9—10-10 
The clearly defined yellow markings will serve to separate this insect from all 
other Indian species whilst the more restricted and irregular abdominal markings 
will distinguish it from cingulata. 
