81 
Male. Female. 
Length of body ... 20-25 mm. 22-27 mm. 
Length of pronotum... 5 fe d= 0. en © 
Length of elytra ... 35-42 « 18-20 “ 
Width beyond base ... 6-9 § Gee ie 
Width before apex ... 10-13 “ 9-123 46 
Length of hind femora 21-24 “ 16-20 “ 
Length of ovipositor... = — 13) 
This peculiar insect appears to be very local in its distribution. 
The males are usually found on the trunks and thick lower 
branches of Eucalypts (#. obliqua), or the stems of Eucalyptus- 
shrubs where trees are absent, and in hot sunshine take readily 
to their wings, but in cooler weather are rather sluggish. The 
females are also found in similar situations, but more frequently 
nearer (or on) the ground, among tufts of grass, sedges, or small 
shrubs. Their movements are slow, and when suddenly 
approached or alarmed, rise as high as possible on their legs and 
raise the elytra, at the same time extending the abdomen, thus 
exposing the brilliant colouring, which, no doubt, serves to 
ensure their safety from attack by birds, lizards, &c., as denoting 
inedibility, for they make no attempt to fly or escape. When 
taken by the hand, a copious brownish fluid is exuded from the 
mouth, which stains the parts touched, 
Habitat.—All the specimens in the Adelaide Museum are from 
the Mount Lofty Ranges, where they are (or were) by no means 
rare in some of the gullies watered by a rivulet, occuring there from 
January to March. In October, 1861, the author observed and 
captured some at Bundaleer, where they frequented small 
scattered clumps of stunted Eucalypts. They also are found in 
Victoria, New South Wales, Queensland, and North Australia. 
C. Group APHIDNIA# (Br. Mon. 19, 146). 
Anterior coxe spined. Frontal fastigium not produced. 
Vertex produced in the form of a pointed horn or crest-like tooth, 
much elevated above the fastigium. 
Genus Macuima, Brunner (ibid, 149). 
Hind femora and tibize with long spines, or leaf-like dilated. 
Genera and species of this group are chiefly American. 
MAcHIMA PHYLLACANTHA, Burmeister (ibid, 150, fig. 39). 
Vertex with a short spine. Pronotum unarmed. Colour 
green, marbled with brownish and with white lines. 
Male. Female. 
Length of body ... ied oy many, 25 mm. 
Lensth of pronotum,.....,.).0' ».. “ Gio), 
Length of elytra ee PDs 
Width of elytra... be Zoee hadnt a ihe Saat 
Length of hind femora... 20 “ 7 ae 
F 
