GROUP X. 
The caterpillars belonging to this group have 16 legs, and the 
body is naked or thinly covered with piliferous spots, from each of 
which issues one or two hairs; some have large warts, which are 
beset with short bristles; the body is green or bluish, and is unlined, 
or marked with four lines or less; the lines on both sides of the 
body are reckoned in, but not those on the venter. 
SYNOPSIS OF GROUP X. 
Body unlined, or marked with only one line (dorsal). 
Body covered with minute black tubercles.1 
Body destitute of these tubercles. 
With shining black tubercle on segment 11. 2 
Without this tubercle. 
Head yellow; warts blue and yellow. 3 
Head ashen brown; warts yellow or reddish. 4 
Head dark brown. 
Head covered with down. 5 
Head not covered with down. 6 
Head green. 
Warts on sides of body blue. 7 
Warts on sides white, ringed with black or brown. 8 
Body marked with two lines (stigmatal). 9 
Body marked with four lines (sub-dorsal and stigmatal).10 
Body marked with three lines (dorsal and stigmatal). 
Head blackish-brown.11 
Head greenish.12 
1 —Pamphila delaware .— Body bluish-white, thickly covered with 
minute black tubercles; on the top of segments 11 and 12 is.a black 
spot; cervical shield black, with a black dot on each side; head 
smooth, white, surrounded on the top and sides with black; a ver¬ 
tical black streak on the middle of the face, and a short black 
streak on each side of this; length 1 inch. (A. W. Chapman.) 
