Dec. 1897.] 
Dyar: New York Slug Caterpillars. 
169 
Stage II. (Plate IX, fig. 2.)—Blunt, squarish, highest at joints 5-6. 
Pale green, a whitish line along subdorsal ridge, a little wavy. Sub¬ 
dorsal tubercles on joints 3-13 and middle ones on joints 3 and 4 con¬ 
ical, clear, with two black setae each; lateral row on joints 3-12 with 
one seta, all with small, short, colorless, secondary setae with blunt tips. 
Skin with sparse watery granules (Plate IX, fig. 6). Largest depressed 
spaces indicated. The primary setae are conic and sharp tipped, the 
secondary ones bulbous. The dorsal space appears as a dark green 
band from the food showing by transparency. Length 1.5 to 2.5 mm. 
Stage III .—Thickly conic, clear granular, otherwise as before. 
The dorsal depressed spaces show faintly as whitish dots. Subdorsal 
line more distinct, nearly straight; lateral tubercles setose. Head about 
.4 mm. wide, whitish, eye black, mouth brown. Length 2.4-3.5 mm. 
Duration 4 days. 
Stage IV .—Elliptical with square tail. Dorsal space flat: lateral 
concave, subventral, short. Subdorsal ridge slight, lateral one well 
marked. No subdorsal tubercles, setae arising from the ridge, two dark 
stiff ones on each segment with no secondary setae. On the lateral 
ridge, low raised tubercles with some secondary setae. Skin densely 
clear granular, the granules slightly conic. Color green, a yellow line 
along the subdorsal ridge on joints 3-13, not joining each other at 
either end. A distinct dorsal row (with dark centers) and a fainter 
lateral row of whitish intersegmental dots. Head .5 mm. wide, pale, 
eye black. Later the ad-dorsal depressed spaces are indicated, and a 
darker green shade appears above and below the subdorsal line Length 
3.5-4.6 mm. 
Stage V .—Ridges even, not tubercular; skin densely clear granular, 
the granules large, conic, especially large along the lateral ridge, but no 
longer setiform. Setae of both ridges black, arising from the ridge. 
Dorsal (1), addorsal (2), small ones below the ridge (3), large lateral 
(4), upper segmental (5) and lower inter-segmental (6) white dots, the 
two largest (1) and (4), dark centered, all these areas smoother than 
the skin between, lacking the granules in a small space, not much 
deepened, the edges graded and obscure. Body elliptical, tail quadrate, 
notched on the sides. Dorsal, and upper half of lateral space pig¬ 
mented, green; below this transparent leaf green; a broad yellow sub¬ 
dorsal line on joints 3-13, dark edged above and below. The larva 
looks much smoother than before. Length 4.5-6.5 mm. 
Stage VI .—Head about 1.3 mm., green, eye black. Body smooth, 
no setae perceptible with a lens except the two pale ones of subventral row 
