1893.] o7 [Packard. 



pair. The small pair of dorsal ones near the end are greenish yellowish. 

 The two lateral ones in front on each side are about three times as large 

 as the eight on each side behind them, and lliey are purplish, while those 

 (the eight) behind are pale greenish. 



On the back, beliind the first pair of appendages, are two parallel pur- 

 plish longitudinal patche-", with the pale wlutisli median line between 

 them, and behind them are two dark patches, also separated by the 

 median line. Between the second and third pair of appendages is a 

 transverse dark brown stripe, which passes around behind the appendnges 

 but does not meet behind, and behind it is a roundish yellowish median 

 patch ; behind this patch, between the bases of the two appendages, is a 

 short transverse white line. The tip of the body behind is lemon-yellow, 

 and on the second, third and fourth segments behind the third pair of 

 appendages is the saddle-like median spot. It has a median oblong lilac- 

 brown patch, bearing two transverse broken white short stripes edged 

 with brown. On each side of this patcli is a white border witli three 

 scallops externall}^ and edged with black, the black line forming three 

 scallops. The two large purple posterior appendages are partly sur- 

 rounded at base by a brown curved line, the two not meeting in front or 

 behind, and between the bases of the long conical fleshy tubercles are 

 two linear dark stripes. The rest of the body is pale greenish, with a 

 slight yellowish tint. The appendages have each slender purplish spines 

 of quite even lengtli. It is bright colored and showy, and must depend 

 on it'' spines for immunity from attack. 



It feeds in this stage on the upper surface of cherry leaves, eating off 

 the surface, leaving large dark patches. Crushed one of the small ones, 

 and found the hairs painful and annoying to my hand. 



S'age III or IV (?). — Length, 7-8 mm. The thoracic segments — i. e., 

 all Ihe region i)eariiig the anterior tubercles or papulfE — is now dark red- 

 dish brown ; the third, or hinder thoracic tubercles, dark reddish brown, 

 and the yellowish dots and lines are obsolete, only the bright yellow spot 

 behind the third pair of thoracic tubercles being left. The two anterior 

 pairs of tubercles are much paler than the third pair and the pair on the 

 eighth abdominal segment. The last pair on the end of the body are pale 

 amber. Tiie lateral papulae or tubercles are still green. The yellow 

 dorsal region between the thoracic and abdominal papula3 is now yellow, 

 edged witli white on the side low down, and in front and behind are white 

 borders edged part of the way with dark reddish brown. In front of and 

 behind the "saddle " are two twin dark dots. The saddle is plain brown, 

 oval, cylindrical, bordered with white, which is edge 1 within with rosy, 

 and, on the outer edge, with dark brown, this border being interrupted 

 in front and behind, opposite the twin dark dots. All around, and at the 

 base of the large tubercles on the eighth abdominal segment, the back is 

 dark reddish brown with a median yellow spot, and behind on the next 

 segment are two large oblique oval white spots, meeting on the middle of 

 the body, and faintly tinged with lemon-yellow. 



