6. _Oeceticus omnivorus_ [M] (Larva, Plate III., figs. 25, 26.) 123 7. _Orophora unicolor_ [M] 126 MICROPTERYGINA. 8. _Porina dinodes_ [M] 132 9. " _enysii_ [M] 133 10. " " [F] 11. " _characterifera_ [M] 133 12. " _cervinata_ [M] 133 13. " _despecta_ [M] 134 14. " _umbraculata_ [M] 134 15. " _signata_ [M] (Larva, Plate III., fig. 6.) 134 16. _Hepialus virescens_ [M] (Larva, Plate III., fig. 23; Pupa, fig. 30.) 129 17. " " [F] 18. _Porina cervinata_ [F] variety 133 [Illustration: Plate XIII.] Notes. [1] This organ is termed the tongue by Mr. Meyrick. As many mandibulate insects possess a true tongue, and the proboscis of the _Lepidoptera_ is not homologous with the tongue, but with the maxillæ, I think the term is very misleading. [2] For the examination of the wings taken from _dried_ specimens, I have found that immersion in methylated spirits renders the veins visible after _partial_ denudation with the camel's-hair brush. With recent specimens, however, the scales can easily be _entirely_ removed. [3] I have found considerable difficulty and uncertainty in examining the neuration of undenuded specimens. [4] Entom. xxvi. 220. [5] Trans. N. Z. Inst. xxii. 218. [6] 'British Moths,' 31. [7] Trans. N. Z. Inst. xxii. 217. [8] Trans. N. Z. Inst. xxii. 216. [9] Ibid. [10] Trans. N. Z. Inst. xix. 7. [11] Trans. N. Z. Inst. xix. 10. [12] _Leucania aulacias_, Meyr., is distinguished by having grey cilia to the hind-wings. The species was described from a single specimen taken at Dunedin and now in Mr. Fereday's collection. I have carefully examined this specimen, and find that the cilia, although considerably injured, are distinctly grey. As, however, I think it undesirable to characterize species so closely resembling each other from such meagre material, I here regard it as a synonym of _Leucania arotis_. [13] Report of American Department of Agriculture, 1881, p. 93. [14] Mr. Philpott informs me that the larva of _M. paracausta_ closely resembles that of _M. vitiosa_. [15] This species has been recently named by Mr. Meyrick, but a description of it has not yet been published. [16] The accurate ascertainment of the positions of the veins near the costa in this species is a matter of considerable difficulty owing to the extremely dense tuft of hairs there situated. [17] Trans. N. Z. Inst. xix. 29.