DISEASES OE THE COTTON PLANT. 195 
narrow stripe, also of yellow, at the end of the elytrae. Its 
legs are black. 
The Yellow-mabgined-wingbd Chauliognathxis. — 
[Chauliognathus marginatus.) 
A small species of chauliognathus is found in Florida, 
where it appears to take the place of the last^mentioned 
insect, having the same habits, and occurring in the same 
places. It is nearly half an inch in length ; the head is 
orange yellow, with a black mark below the eyes, which 
are also black ; the tliorax 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 yellow ; the lower part of the thighs is also 
orange yellow ; the upper part and rest of the legs and an- 
tennae are black. This insect frequents the flowers of the 
cotton, but, as yet, I have never discovered it domg any 
injury. 
The Delta-thobaxed Triohius. — {Trichius delta.) 
A small beetle, which is little more than two-fifths of 
an inch in length, 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 yel- 
low, containing a singular triangle of yellow lines, the 
lower end of which appears as if broken off; the wing- 
cases are reddish brown, with two oblique black spots on 
the upper, and two longitudinal black ones enclosing a 
yellowish mark on their lower parts ; the abdomen pro- 
trudes the twentieth part of an inch beyond the wing- 
cases, and is of a yellowish color ; the fore-legs are spiny 
