256 JOURNAL, BOMBAY NATURAL SIST. SOCIETY, Vol. XXVII. 



hindwina at the arc, entire; its distal side very slightly concave, sectors 

 of the arc fused for a short distance in the forewing and for a long distance 

 in the hind, a shorter fusion in the female, arc between the 1st and 2nd 

 antenodal nervures, antenodal nervures 10^ in the male, 11^ in the female, 

 the final incomplete, 1 cubital nervure to all wings, not usually supple- 

 mentary nervures to the bridge but in two of my specimens there is one 

 accessory in each right, hind-wing, 8th nervure in the hindwing from the 

 anal angle of the trigone ; in the fore, very flatly curved so that the dis- 

 coidal field is contracted at the termen, discoidal field with 3 rows of 

 cells, all hypertrigones entire, 4th nervure not noticeably undulated, 1 

 row of cells between 5 and 5a, anal loop long and narrow, its apex open, 

 resembling in this respect T. tillarga, bifurcated cells at the outer angle 

 only (occ'asionally at the trigone also), anal field broad, its cells not 

 markedly diflerentiated but arranged in transverse rows. Membrane and 

 stigma moderately large. 



Sexual organs : male, lamina broad, slightly depressed, its free border bifid 

 and furnished with two triangular processes, its surface coated with long 

 hairs, external tentaculee cupped, small, almost obsolete, internal tentaculse 

 a short, hooked spine turning strongly out and backwards, its surface fur- 

 nished with minute spines, lobe quadrate, broad and short. The whole 

 of these organs very small. Female: border of 8th segment not dilated, 

 8th ventral'plate split for about two-thirds of its length, prolonged in to a 

 lonw vulvar scale which reaches nearly to the end of the 9th segment, 9th 

 ventral plate bent ventralwards and furnished with a tuft of black hairs. 



Ifig_ 60.— Male sexual organs of Zyxomma petiolatwn ( xl2 ). 



71. Zyxomma petiolatum, Ilambur, Neur. p. 30, tab. 2, fig. 4d (1842)— 

 Hagen, Zool. hot. Wien, 8, p. 479. (1858)— 

 Brauer, ibid., 17, p. 287 (1867)— Id., ibid., 18, 

 p. 712 (1868)— Selys, Mitt. Mus. Dresden 

 (1878) p, 293. — Id., Comptes end. Soc. Ent. 

 Belg., 7, VII, 88 (sep.)— Kirby, Trans. Zool. 

 Soc. Lond. 12, p. 308, tab. 57, fig. 10. (1889)— 

 Id, Cat. p. 335 (1890)— Selys, Ann. Mus. 

 Civ. Genov, 30, p. 439 (1891)— Kirby, Linn. Soc. 

 Journ. Zool. 24, p. 554 (1893) — Id., Ann. Mag. 

 Nat. Hist. (6) 14, p. 19 (1894)— Tillyard, Proc. 

 Zool. Soc. Lond. 1902, p. 64— Martin, Miss. 

 Pavie (p. 7. sep.) (1904). 



