Head cor not well defined and when at rest hidden 
beneath the anterior segment. e prominent character of the head consists of a 
pair of curved hook-like mandibles like those of the male. Antennz short, straight, 
s ; : å 
d-like. 
Labial palpi appear two-jointed. The antennæ and palpi being short, stand stiffly 
a 
n 
g 
= 
R 
3 
= 
o 
— 
3 
Rs 
pal 
= 
Ric! 
— 
=} 
oO 
o. 
ct 
5 
5 
Gas 
n 
< 
oO 
r 
yi 
oO 
pm 
< 
= 
= 
cr 
ba} 
p 
5 
a 
Ga] 
p 
s 
oO 
= 
or 
= 
o 
3 
lu w llow inter: 
which colors intermixed obtain upon the sides and the underparts generally. 
. Spiracles upon the sides of the fourth to the eleventh segments, inclusive, and 
= below the spiracles on the same segments is a double fold forming a double 
ateral ridge. The other segments bear but a single fold and no spiracles. 
_ The thoracic region bearing the legs exhibits indistinct sutures and folds present- 
ing but a faint resemblance to analogous parts in other Coleoptera. 
The legs are of the type seen in the female in some Lampyridz and are four- 
's strongly setose, and the claws of all the legs are twice as long, more curved, finer 
and more sharply pointed than in the fully grown insect, š 
acc 
luminous larva, then alluded to, is an earlier stage of the insect I 
have described above 
The larva fed all winter, and in March sloughed its skin 
and remained motionlgss, coiled in a cell of earth for three weeks, 
d kept a uniform pale-cream color without luminosity, but 
gradually the center of the dorsal plates became darker, and in 
the ratio of coloring so was the reappearance of phosphorescent 
light ; when fully restored in strength it became very active an 
thi y motionless for two days. On the morning of the 
third day I found it had sloughed another skin, but this time a 
Ner a covering of uniform pale brown, and the insect itself 
disappeared into the earth. This last dormant stage must 
