CorzxNs0.—-On newly-discovered New Zealand Insects. 157 
prothorax small; mesothorax curved upwards and projecting shell-like over 
prothorax, with a loose space between neck and pronotum, and a larger one 
between prothorax and mesothorax. Legs hairy, piceous-black, with two 
large spines (spurs) at lower end of tibie ; femora yellow above, brown at 
lower end; ungues long, diverging and bright red-brown. Wings iridiscent, 
brownish, finely ciliate with dark hairs, densely reticulated, cells all shapes 
and sizes, but more regularly rectangular on sub-median vein, and largest 
between sub-costal and median veins, pilose with long dark and rather distant 
hairs on all veins and bands, spotted generally with brownish dots and 
markings, that are somewhat sub-quadrate at bands and triangular at forks 
(and sometimes broadly so at bands), outer edges irregular and not defined, 
the centre of the wings free of spots, also the costal cells from base to 
stigma: anterior wings (each) 14 inches long, 5 lines wide, sub-oblong-lan- 
ceolate, dimidiate, much contracted at base, obtuse-pointed at tip, apex 
inclined below; stigma oblong, whitish-yellow (or light cream-colour) with 
short dark hairs, a large black-brown spot at the basal end, and a brown 
blotch opposite between sub-costal and median veins, and another blotch 
directly opposite towards lower margin; costal vein yellow at base and 
eradually becoming brown ; sub-costal vein double for about two-thirds of 
length of wing—from 4 inch from base on to stigma, and without bands 
between,—yellow with brown dashes at junction of bands, and on sub- 
median vein below ; ante-cubitals straight, simple; post-cubitals forked and 
sloping, a few in the centre forming cells: posterior wings each 1} inches 
long, 4 lines wide, sub-linear-oblong, more acute, and less and more finely 
spotted than anterior pair; spots mostly triangular in forks below stigma 
and about tips; stigma rather large, oblong, whitish; a brown blotch 
opposite stigma and near the lower margin. 
Length of the body 16 lines ; of the wings extended 38 lines. 
Hab. Seventy-mile Bush, Waipawa County ; (rare, like other species 
of the genus; three specimens only obtained with much difficulty) ; 
1882-88 ; W.C. 
Obs, A very elegant insect, in form, colour, iridiscence, and finely 
hairy and ciliated wings ; in this latter respect closely approaching the next 
sub-order Trichoptera. It seems to have some affinity with our only other 
and little-known New Zealand species of this very large and cosmopolitan 
genus,—M. acutus, Walker, (B.M.) ,—judging from description only ; but it 
is very distinct. 
The larva is ovate, thick, fleshy, largely convex above, 6-7 lines long, 
8 lines broad, of a reddish-grey hue, spotted with brown and black. Head 
1 line long; mandibles 14 lines long, curved, hairy, grooved on lower sur- 
face, each having three large and stout curved spines on the inner margin ; 
