2 THE MICROSCOPE. Jan, 
in L. curvicollis, Luddock; antenne 4-jointed, more than 
one-half length of body; basal joint not much more than 
one half length of others, which are sub-equal; ab- 
domen with four segments, the third of which equals one- 
third length of body; legs tapering, with minute terminal 
tarsal joint; armed at apex with large spur, notched at 
tip and below, which is a strong simple spur or spine, 
spring more than half the length of body, jointed at 
center, the apical portion bifurcated, densely clothed with 
long fine hairs, terminal rays very finely and regularly 
comb-notched on lower or posterior edge and somewhat 
curved downward at tip, with three or four short, rather 
distinct, teeth at extreme tip; catch a strong groove or 
sheath extending one-third length of center of abdomen 
and grasping spring strongly up the middle joint. 
The body is clothed with flat striate scales, and dor- 
sally with scattering heavy, almost clubbed, hairs; the 
anterior margin of promotum is ornamented with a very 
dense tuft or fringe of strong hairs; hairs of antenne 
and legs forthe most part fine and long, It is silvery 
gray in color, marked with violet-purple, lighter on an- 
tenn, except base of lower joints, femora and tibiw, with 
spot connecting antenne, light purple; anterior and lat- 
eral margins of thorax spots along side of the body, hind 
margin of second, third and fourth abdominal segments, 
lateral spot on middle of third segment, dark purple, 
sometimes appearing almost black. 
One-third and one-half erown specimens do not differ 
from the adult notably, except in size and very slightly 
in coloration. In the illustration the head is bent up 
more than in its normal position in state of rest, the 
mouth parts are very difficult to work out. The labrum 
issimple. The right and left mandibles differ notably in 
the character of the teeth on their inner edges. The 
maxille and labium are of similar structure, consisting 
of large basal lobes, apically covered with long and 
