106 
COLEOPTERA. 
together in June and July, on logs or on the trunks of trees 
in the woods, the males paying their court to the females, 
or contending with their rivals, waving their antennae, and 
shoving the eagerness of the contest or pursuit by their 
rapid creaking sounds. 
The head of the Lamias is vertical or perpendicular ; the 
antennae of the males are much longer than the body, and 
taper to the end ; the thorax is cylindrical before and behind, 
and is armed on the middle of each side with a very large 
pointed wart or tubercle; the tips of the wing-covers are 
rounded ; and the fore legs are longer than the rest, with 
broad hairy soles in the males. 
The titillator is of a brownish color, variegated or mottled 
with spots of gray, and the wing-covers, which are coarsely 
punctured, have also several small tufted black spots upon 
them ; the middle legs are armed with a small tooth on the 
upper edge ; the antennae of the male are twice as long as 
the body, and those of the other sex equal the body in 
length, which measures from one inch and one eighth to 
one inch and one quarter. What kind of tree the grub of 
this insect inhabits is unknown to me. 
Trees of the poplar tribe, both in Europe and America, 
are subject to the 'attacks of certain kinds of borers, differing 
essentially from all the foregoing when arrived at maturity. 
They belong to the genus Saperda. In the beetle state the 
head is vertical, the antennae are about the length of the 
body in both sexes, the thorax is cylindrical, smooth, and 
unarmed at the sides, and the fore legs are shorter than the 
others. Our largest kind is the Saperda ealcarata of Say 
(Plate II. Fig. 21), or the spurred Saperda, so named 
because the tips of the wing-covers end with a little sharp 
point or spur. It is covered all over with a short and close 
nap, which gives it a fine blue-gray color, it is finely punc- 
tured with brown, there are four ochre-yellow lines on the 
head, and three on the top of the thorax, the scutel is also 
ochre-yellow, and there are several irregular lines and spots 
