GROUP XII. 
The caterpillars belonging to this group have 10 legs, and the 
body is naked, or thinly covered with prickles or piliferous spots, 
from each of which issues one or two short hairs; the body is of some 
other color than green, and is unlined or marked, with 3 lines or 
less, not counting those on the venter. 
SYNOPSIS OF GROUP XII. 
Body marked with 2 lines. 
With a high projection on top of segment 4. 1 
Without this projection. 2 
Body marked with 3 lines (dorsal and sub-dorsal). 
With a shining black tubercle on segment 11..3 
Without this tubercle.(Group XIII, No. 5) 
Body unlined, or marked with only 1 line (dorsal). 
Head grayish. 
With 2 white spots on upper part of face. 4 
Without these spots. 5 
Head brownish-black. 
With 2 rows of tubercles on the back.... 2 
Without these tubercles. 6 
Head reddish or yellowish-brown. 5 
1 —Notoclonta unicornis .—A wide brown dorsal stripe on the first 3 
segments; side of segment 1 pale greenish, sometimes marked with 
reddish; sides and under part of segments 2 and 3 deep green; rest 
of body pale yellowish-brown; a sub-dorsal dark line extends from 
segments 3 to 10; on segments 9 and 10 is sometimes a light colored 
V-shaped mark; on top of segment 11 is sometimes a blunt pointed 
conical projection; on top of segment 4 is a high projection, divided 
at the tip into 2 points; head pale brown; length 1J inches. Feeds 
on Plum. June to August. Spins a cocoon. (I). W. Coquillett.) 
