The moth appears in December, January, February, March and April. It is often {29}found at rest on tree-trunks in the daytime, where its beautiful green colouring causes it to resemble, in the closest possible manner, a patch of moss. Mr. Hawthorne tells me that he has frequently found dead specimens in this situation. This insect is, I think, commoner at slight elevations above the sea-level, forest ranges of from 500 to 1,000 feet in height being apparently the most favourable localities for the species. The appearance of the moth over so long a period would seem to indicate that there are two generations in a year, but I have never found full-grown larvæ in the middle of summer. There is, however, no doubt that the insect passes the winter in the larval condition. This species is often met with very late in the season, frequenting the few remaining blossoms of the white rata until the first or second week in April. Mr. Meyrick thus alludes to the scented tuft of hairs in the male insect: "The large tuft of the fore-wings is the source of a very strong vanilla-like perfume, which scents the box in which the specimens are contained for more than a week after their death; the scent is excited more strongly, even in the dead specimen, by stirring the tuft with a pin."[17] I can fully testify to the accuracy of this interesting observation. Sub-family 3.--_CARADRINIDES_. "Eyes naked, not ciliated." Genus 9.--BITYLA, Walk. "Antennæ in male filiform, shortly ciliated. Thorax not crested, collar sub-erect. Abdomen not crested."--(Meyrick). Of this genus we have two species in New Zealand. BITYLA DEFIGURATA, Walk. (_Xylina defigurata_, Walk., Suppl. 756. _Bityla thoracica_, ib. 869. _Bityla defigurata_, Meyr., Trans. N. Z. Inst. xix. 31.) (Plate V., fig. 33.) This species has been taken at Palmerston in the North Island, and at Blenheim, Christchurch, Lake Coleridge, Dunedin, and West Plains near Invercargill, in the South Island. The expansion of the wings is 1½ inches. _The fore-wings are uniform dull bronzy-brown and very glossy_; there are one or two faint indications of transverse lines. The hind-wings are dark grey, also glossy. The perfect insect appears in January, February, and March, and is attracted by light. The single specimen I possess in my collection was taken in July, evidently hibernating. It is a rare species. BITYLA SERICEA, Butl. (_Bityla sericea_, Butl., Proc. Zool. Soc. Lond. 1877, 387, pl. xlii. 12; Meyr., Trans. N. Z. Inst. xix. 31.) (Plate V., fig. 34.) This rather striking insect has occurred at Wellington in the North Island, and at Christchurch and Lake Guyon in the South Island.