908 JOURNAL, BOMBAY NATURAL BIST. SOCIETY, Vol. XXVIIE 
Head. Labium, labrum, face and irons pale greenish yellow, the irons mark- 
ed with a thick, black T above ; occiput very small, pale yellow. 
Thorax broad, bro\vn above marked with obscure, green, humeral bands, 
the sides greenish. 
Legs pale yellowish brown. 
Abdomen tumid at the base, constricted at the 3rd segment, broadening again 
at the 4th and thereafter tapering to the anal end, reddish brown spotted with 
green. The 1st segment with a large blue spot at its base, the 2nd with a dorsal 
and two central green spots and two lateral, apical spots of green, 3 with an obli- 
que, medial line and an apical, slender line of green, 4 to 8 with the medial line 
and two apical spots, 9 with 2 subapical spots of yellow, 10 reddish, unmarked, 
bordered with black. 
Superior anal appendages longer than segments 9 and 10, slender, of even 
breadth from base to apex where they are slightly broadened and pomted, 
fringed internally with black hairs. Inferior about one-third the length of the 
superior, narrowly triangular, pale yellow with the apex black. 
Wings long and broad, hyaline, costa yellow ; stigma moderately long and 
slender, pale brown; membrane nearly obsolete, white ; Rs. forking a little before 
the stigma ; 5 cells in the trigones ; anal triangle with 3 cells ; nodal index : — 
15-21 
17-15 
Closely resembles bayadera, differs as follows : — by the we 11 marked “ T ” on 
frons, by the tumid basal segments of abdomen, the very large oreillets, the 3rd 
segment of abdomen very constricted, and by the even sized superior anal ap- 
pendages. Differs from subMerrupta by its smaller size and by the absence of 
brown spots at the base of the wings. 
Type male in Martin’s collection. Laidlaw mentions a male from Mazbat, 
MangaldaiDist., Assam, collected by Mr. S. Kemp and now in the Indian 
Museum ( abdomen 42, anal appendages 6 mm, hindwing 39 mm.). The type 
is from Tonkin. 
Gynacantha basiguttata, Selys., Ann. Soc. Esp. XXI. p. 20 (1842); Martin, 
Cat. coll. Selys., XIX, XX, pp. 192-193 (1909); Kruger, Stett. Ent. 
Zeit. pp. 283-284, (1895) ; Ris. Ann. Soc. Ent. Belg. LV. pp. 246-247, 
fig. 13 (1911) ; Laid. Rec. Ind. Mus., Vol. XXII, p. 91 (1921) ; Kirby, 
Cat. Odon. p. 95 (1890). 
Male. Abdomen 54 mm. Hindwing 45 mm. 
Head. Labium, labrum, face and frons brownish yellow, the latter yellow 
above marked with a black T ; occiput very small, brown. 
Thorax brownish, greenish brown or reddish brown, probably greenish during 
life. Legs all black. 
Abdomen very tumid at base, markedly constricted at the 3rd segment and 
then cylindrical to the end, black marked with yellow as follows : — segment 
1 yellowish at the sides, 2 yellowish brown, the carina and a medial 
transverse line and the apical border black, 3 to 7 with a pair of medial and a 
pair of apical spots yellow, 8 with the median spots only. OreUlets large. 
Wings slightly tinted with brown, sometimes deeply enfumed and with 
a reddish brown mark at the base extending as far out as the 1st antenodal ner- 
vure ; stigma brown, very slender ; membrane very small, grey ; Rs. forking just 
before the stigma, with 7 rows of cells between it and Rspl ; anal triangle with 3 
or rarely 4 cells ; tomus very accentuated ; nodal index 22-30, 26-23 in fore- 
wings. 
Superior anal appendages longer than segments 9 and 10, very slender at the 
base and for the basal three-fourths, then broadening and spatulate, fringed 
thickly with black hairs on the inner side at the ends. 
