Corzxso.—On newly-discovered New Zealand Insects. 15i 
have never once succeeded; it seems to be entirely dependent on itself 
(possibly emotional) and not arising from any outward cause—nor from 
the time of day ; neither is it regular in its changes. At first, I was a little 
astonished, and could scarcely believe my own eyes, until I had repeatedly 
proved the event; the change of colour is always equally the same, extend- 
ing all over its body. 
This lizard is also infested with a tiny red parasite, that sticks on 
between its scales in the outer angles of the thighs of its hindlegs, where it 
lives together in little clusters of 12-16. This parasite has a thickish body, 
rather soft, and is very difficult to remove entire. I suppose it to be an 
insect of the Hemiptera order. I have sent specimens of it to Professor 
Hutton at Christchurch, and to Mr. Maskell at the Museum, Wellington, 
for examination, etc. 
Art. XV.—A Description of some newly-discovered New Zealand Insects 
believed to be new to Science. By W. Corxxso, F.L.S. 
[Read before the Wellington Philosophical Society, 1st October, 1884.] 
INSECTA. 
Order ORTHOPTERA. 
Section Gressoria. 
Family Pnaourpz. 
Division ArrEROPHASMINX. 
Genus Bacillus. 
1. Bacillus coloreus, sp. nov. 
Female; General colour light green; the two basal joints of antennæ 
(under-surface), the throat, and the upper long curved ends of anterior 
femora bright pink-red. 
Head oblong, rather narrow, 8-9 short seattered muricated points on 
vertex ; occiput broad, width of prothorax ; maxillary palpi finely pubescent ; 
antenne 12 lines long, very slender, cylindrical, pubescent, composed of 22 
joints, articulations pink-red, the basal joint large broad and flattish and 
green on the upper surface, the second basal very small, the rest large, 
brownish-green with a pink tinge, increasing in size to apex. 
Body mostly smooth, 84 inches long, stout, increasing in size to 8rd 
abdominal segment where it is 84 lines wide, a narrow slightly-winged 
crease or fold with a light-yellow margin extending downwards from 
anterior legs, giving the appearance of double side margins to the abdomen, 
which is 19 lines long; a small triangular central dark-brown spot at 
occiput, another at lower end of pronotum, with a very narrow dark line 
