It will be seen on reference to Plate II., figs. 22 and 23, which represent the structure of the hind-wings of the male and female of _Tatosoma agrionata_ respectively, that in the male veins 1 and 2 are absent, having no doubt become absorbed during the formation of the characteristic sexual lobe; vein 8 is connected with the margin of the cell by an oblique bar, this being probably due to an extension of the wing in the costal region, compensating for the loss in the dorsal region due to the above-mentioned lobe. In the hind-wings of the female the normal neuration of the family is almost preserved, the only peculiar feature consisting in the origin of veins 6 and 7 from a point on the margin of the cell.
Of this remarkable genus we have three species, and I think it quite possible that others may reward the industry of future collectors.
(_Cidaria lestevata_, Walk. 1416. _Sauris ranata_, Feld. cxxxi. 11., _Tatosoma lestevata_, Meyr., Trans. N. Z. Inst. xvi. 67.)
This beautiful species has occurred at Wainuiomata, near Wellington, in the North Island, and at Nelson and Christchurch, in the South Island.
The expansion of the wings is 1-3/8 inches. _The fore-wings are bright-green; there are four wavy, black, transverse lines; the first near the base, the second a little before the middle, the third considerably beyond the middle, and the fourth near the termen_; the terminal line is very faint towards the tornus, and it emits three or four very sharp, longitudinal, black, tooth-like marks; all the transverse lines are much stronger where they cross the principal veins. The hind-wings are very pale yellowish-green.
The perfect insect appears in February. At present I believe the species is represented by four specimens only--two in Mr. Fereday's collection and two in my own.
(_Cidaria agrionata_, Walk. 1417. _Cidaria tipulata_, ib. 1417. _Cidaria inclinataria_, ib. 1418. _Cidaria transitaria_, ib. 1419. _Sauris mistata_, Feld. cxxxi. 12. _Tatosoma transitaria_, Meyr., Trans. N. Z. Inst. xvi. 68. _Tatosoma agrionata_, Meyr., Trans. N. Z. Inst. xvii. 64.)
This fine species has occurred commonly at Wellington in the North Island. It is generally distributed in the South Island, and has also been found at Stewart Island.