INSECTS 
89 
bees, and wasps, may, perhaps, be beneficial, as serving to fecundate 
many plants by carrying the pollen from flower to flower. 
i 
THE COTTON-CHAULIOGNATHUS. 
(C hauliognatlius pcnnsylvanicus.) 
. This insect (PL VII. fig. 9) does not appear to attack the petals 
in the same manner as the cantharides, just described, but contents 
itself with the pollen or nectar, which is found in the flower, where 
it may be often seen so much occupied in feeding as scarcely to take 
•any notice of the approach of mankind. It is so plentiful near Colum- 
bia, in South Carolina, that four or six may be taken fi;om one bloom 
alone. When issuing from the flower, they sometimes appear to be 
so abundantly powdered with pollen as to bo perfectly yellow, and no 
doubt serve in some measure beneficially, as a medium for transport- 
ing the pollen and fertilising other blooms. 
This insect is not quite three-quarters of an inch in length ; its 
head, eyes, and antenmo are black ; its thorax, orange, with a large 
dark spot in the centre ; its wing-cases are orange-yellow, with a 
black, longitudinal, broad stripe running down each, near the inner 
margin, leaving a narrow inner and broad outer margin of yellow 
orange. This black stripe grows broader towards the abdomen, leav- 
ing a narrow stripe, also of yellow, at the end of the elytra. Its legs 
are black. ° 
THE YELLOW-MARGINED-VVINGED CHAULIOGNATHUS. 
(C hauliognatlius marginatus.) 
A small species of chauliognathus is found in Florida, (PI. VII. 
fig. 10) where it appears to take the place of the last mentioned insect, 
having the same habits, and occuring in the same places. It is nearly 
halt an inch in length ; the head is orange-yellow, with a black mark 
below the eyes, which are also black ; tiie thorax is yellow, with a 
longitudinal black mark down the centre ; the wing-cases are black, 
edged around the outer and inner margins, and the end with orange- 
ycllow , the lower part ot the thighs is also orange-yellow j the 
upper part and rest of legs and antennas are black. 
This insect frequents the flowers of the cotton, but, as yet, I have 
never discovered it doing any injury. ^ 
THE DELTA-XIIORAXED TRICHIUS. 
( Tricliius delta.) 
A small beetle, which is a little more than two-fifths of an inch in 
length, (PI. VII. fig. 11,) is also found in cotton-blooms, and some- 
times on the bolls. The head is black, including several white marks ; 
the thorax is also black, bordered with yellow, containing a singular 
triangle of yellow lines, the lower end of which appears as if broken 
