Dec. 1896.] Dyar : Life-Histories of N. Y. Slug Caterpillars. 189 
obscure raised area down the anterior side of each segment; lateral de¬ 
pressed spaces (4) and (6) show as white dots. Dorsum evenly sha- 
greened, the white paired dots (1) visible on joints 3 and 4, and 4 and 
5. Length 3.2 to 4.4 mm. 
Stage V .—Similar to the mature larva in shape, subdorsal horns 
projecting horizontally, only half as long as the lateral horns, those on 
joints 8 and 10 slightly shorter, that on joint 13 longest; all slender, 
fringed by the black-tipped spines. Skin wrinkled shagreened, the 
horns also wrinkly. Yellowish green, the yellow subdorsal line broad, 
a red dot on joint 9 anteriorly. Subdorsal horns of joint 3 and lateral 
of 3 and 4 red throughout, the subdorsal pair on 3 connected by a faint 
red line. Other subdorsal horns yellowish green, the one on joint 9 
more distinctly yellowish. Lateral (4) and lower intersegmental lateral 
(6) dots visible as before. Length 4.4 to 6 mm. 
Stage VI. —Flattened, dorsal space narrowed centrally at joints 7 
to 11. Subdorsal horns one-third the length of the lateral ones, those 
on joints 8 and 10 shorter, all flattened, projecting horizontally. Color 
green, the dorsal space pigmented. Dots of. depressed spaces (1) 
double and paired on joints 3 to 4, elsewhere scarcely indicated. On 
the sides a green line on the anterior side of the segments, the posterior 
part whitish and containing a large reniform glandular spot (4), a large 
round green centered one (6) and a small white dot (5) on the green 
band below. A yellow line on the subdorsal ridge, a central red dot on 
joint 9 surrounded by yellow. Anterior horns dark red as before, joined 
by a red stripe and armed by black spines. The other horns pale and 
armed as before. The black spines differ only in color from the others. 
Skin covered with long waved ridges instead of granules. Length 6 to 
8.3 mm. 
Stage VII .—Essentially as before, and also closely like the mature 
larva. Color green, a red dot on joints 9 and 11 anteriorly between 
the yellow subdorsal lines; front edge red as before with short black 
spines. Some of the spines of lateral horns bear long setse instead of 
short tips, and thus cause a more fringed appearance. Length 8 to 
12.6 mm. 
Stage VIII .—(Plate IX, figs. 3, 4, 5 and 7) Shape as described 
above. Green, pigmented in dorsal space and on the raised bars along 
the anterior edge of the lateral segments. Glandular dots whitish, the 
spots on the sides (4) and (6) surrounded by some green pigment and 
appearing as broken whitish rings with dark centers. Anterior edge 
red, rarely also the tips of all the horns. A distinct yellow subdorsal 
