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. {40}TATOSOMA AGRIONATA, Walk. (_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.) (Plate VI., fig. 26 [M], 27 [F].) 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. The expansion of the wings is about 1½ inches. _The fore-wings are bright-green traversed by numerous black, wavy, transverse lines; these black lines are grouped into four more or less distinct bands, the outermost of which is interrupted at each of the veins_; there is a conspicuous black dot in the middle of the wing, a number of small triangular black marks near the termen, and a series of minute black dots on the termen. The hind-wings are ochreous, tinged with green towards the termen. In the female the abdomen is much shorter, and the hind-wings are larger than in the male. The perfect insect appears from December till April. It frequents dense forests, and is generally found at rest on the trunks of trees. In these situations the pattern of the fore-wings is extremely protective, the whole insect bearing the closest possible resemblance to a patch of moss. This species may also be taken at sugar, and sometimes at light, but I have found that it can be obtained most plentifully by a careful scrutiny of the tree-trunks in a favourable locality. As a rule I think that the males are considerably commoner than the females. I have noticed them in the proportion of about four to one. TATOSOMA TIMORA, Meyr. (_Tatosoma agrionata_, Meyr. (nec Walker), Trans. N. Z. Inst. xvi. 68. _Tatosoma timora_, Meyr., ib. xvii. 64.) (Plate VI., fig. 28 [M], 29 [F].) This rather sombre, though interesting insect, has occurred at Palmerston and Wellington in the North Island, and at Christchurch and Akaroa in the South Island.