LEPIDOPTERA. 
267 
Fig. 31 6 .—Se£rodonta bilineata , 
larva. 
feeding on the leaves of oak, elm, and basswood. It 
measures when full grown about one 
and one half inches in length. Its 
ground-color is usually green, but 
sometimes claret-red. There is a 
pale yellow stripe along the middle of the back, and on each 
side a stripe of the same color. The course of these side 
stripes is very characteristic; passing back from the head, 
they converge on the prothorax; on the mesothorax and 
metathorax they are separated from the dorsal line only by 
a narrow band of red or purple; on the first abdominal seg¬ 
ment they diverge to the lateral margin of the back, but 
converge again on the seventh and eighth abdominal seg¬ 
ments. This yellow subdorsal line is bordered without by 
a milk-white stripe; and extending from this stripe over the 
side of the body there is a whitish shade which fades out 
below. The moth is ash-colored, with the fore wings crossed 
by two wavy lines between which the wing is darker; be¬ 
tween the outer wavy line and the outer margin of the wing 
there is a faint band. 
The Red-humped Apple-worm, CEdemasia concinna 
(CEd-e-ma'si-a con-cin'na).—The larva of this species (Fig. 
317) is common on apple and allied plants. The head is coral- 
Fig. 317 .—CEdemasia concinna , larva. 
red, and there is a hump of the same color on the back of the 
first abdominal segment; the body is striped with slender 
black, yellow, and white lines, and has two rows of black 
