March 1897.] DYAR I LlFE-HlSTORIES OF N. Y. SLUG CATERPILLARS. 9 
purple patches extending on joints 3 to 7 and 9 to 12, separated by a 
green space. Spines with black tips, rather delicate; skin closely and 
finely clear granular. Depressed spaces (1) and (2) indicated as glan¬ 
dular dots, large lateral ones (4) as ill defined hollows, all obscure. 
Head greenish, eye black. Length, 4 to 6.5 mm. 
Stage VI —As before; patches dark reddish purple. Subdorsal 
horns on joint 6 and 7 moved outward a little, not in line with the 
others ; that on 8 rather larger than the other short horns. A distinct 
green line edges the subdorsal band below. Dorsal purple band broken 
as before or continuous, incised at the large horns. Sometimes the sub¬ 
dorsal horns of 11 and 13 are red tipped as well as 3 to 5 and 12. The 
purple band is bordered with crimson ; a pale dorsal line ; no caltropes. 
Length 5.7 to 9 mm. 
Stage VII. —(Plate I, Figs. 9, 10 and n) Appearance as before, 
but there are caltrope patches (Plate I, Fig. 14) on top of the lateral 
horns of joints 6 to 12 and a large one on joint 13. Dorsum purple, 
darker at the edges, incised by yellow on joints 4, 5, 8, 11 and 12 ; a 
straight pale dorsal line and the glandular dots (1) whitish, two pairs 
on incisures 3-4 and 4-5, one pair in the other incisures. Addorsals 
(2) indicated as tiny pale dots, seen on joints 9 and 10. Long horns 
on 3, 4, 5, 8, 11, 12 and 13 red, the rest yellow, the largest .6 to .7 
mm. long, the shortest rounded. Sides green, darker below both ridges, 
a broken whitish line along lateral ridge. Depressed spaces (4) show 
faintly and an ill defined hollow between the segments subventrally (7). 
Skin with low conic clear granules (Plate I, Fig. 12); spines small, black 
tipped (Plate I, Fig. 13). Length 8.2 to 11.8 mm. 
Besides this, the usual form, examples occur with more red, or 
with less. 
Form A _Normal; no red except the subdorsals of 3 to 5, 8, 11 
and 12, and the lateral of 3. Sides green, a broken yellow line on lat¬ 
eral ridge. 
Form B. —Subdorsal horns 3 to 13 and lateral 3 all red; some 
yellow shading in the lateral space, the lateral line nearly continuous. 
Form C .—Horns red and a vermilion stripe connecting their 
bases on joints 3 to 12 ; purple marks with a crimson edge and a blurred, 
irregular, crimson band in the lateral space, shading into the subdorsal 
red anteriorly; below it a yellowish or whitish shading. 
Form D. —Subdorsal horns on 3 reddish, all the rest yellow ; dor¬ 
sal purple band pale, edged with green inside the yellow line, divided 
by yellow on joints 8, 11 and 12. 
