The Genus _Selidosema_ contains a large number of cosmopolitan species; Meyrick lists 29 species as Australian; they are usually grey or brown with darker lines and blotches. _Selidosema lyciaria_ is one of our largest species, measuring about 2 inches across the wings; is of a uniform brownish grey, with both pairs of wings marbled in a regular pattern with black and chocolate brown, and crenulated round the edges. The larvae feed upon the black wattle, and vary much in colour, from grey to dark brown; the head is curiously notched, and there are two little projections upon the back by which they can be easily identified. _S. excursaria_ has a range from S. Australia to N.S. Wales, and is one of our commonest species; it measures 1½ inches across the wings, and is of a uniform dull greyish tint, very finely pencilled with darker transverse markings, but is somewhat variable in colour. The caterpillars are of a general light brown colour, with the sides pencilled with fine parallel white lines running down the whole length of the body; they are said to feed upon a number of different plants, but are common on the wattles. _S. canescaria_, slightly larger than the last, has a dull grey tint, thickly mottled with dark brown wavy lines; it ranges from S. Australia to Queensland. Another species, _S. acaciaria_, is a little larger, of somewhat similar colour, with whitish markings; it is common in this country, and is also found in India, Ceylon, and S. Africa. [Illustration: =Figs. 126= and =127=.--The Marbled Looper. 126. _Lophodes sinistraria_ (Guérin) ♂. 127. _Lophodes sinistraria_ ♀.] _Lophodes sinistraria_ is slightly over 2 inches in the large females; the sexes vary much in size and colour. They are of a general dark chocolate brown tint blotched with grey along the front of the fore wings, with a distinct row of short grey stripes round the hind wings in a line with the dentate crenulations. It has a wide range over Victoria and Eastern Australia. The larvae feed upon the foliage of the black wattle, but I have also recorded them damaging the foliage of young apricot trees. They are reddish brown caterpillars, covered with transverse bands of darker coloured spots, and they measure about 1½ inches in length.