170 Journal New York Entomological Society. [Voi. v. 
(iv and v) which look long. Skin densely clear granular, the granules 
large, coarse, conic as before, but less sharply pointed and situated 
more closely along the lateral ridge. Tail quadrate, slightly laterally 
notched. Color whitish green, a broad yellow line along the subdorsal 
ridge, very slightly waved, edged with dark green as before. A faint 
white line along subventral edge. All the depressed spaces (r) to (6) 
indicated by yellowish dots, small, shallow, only (i) with a rather sharp 
edge and fine granular bottom, the others nearly covered by the large 
bordering granules. Subventral space very finely granular. Spiracles 
round, whitish, normal, in line. Later the color becomes gradually 
whiter, the subdorsal lines approach each other at the ends, but are 
separated by a space of .5 mm. No transverse line on joint 3. Length 
6.3-9.5 mm. Duration of the stage 8 days. 
Stage VII. —(Plate IX, fig. 8). Shape as described above. Skin 
closely clear granular, frosted. Whitish green, clearer on joints 3-5 ; 
broad subdorsal lines pale yellow, edged with dark green above and less 
distinctly so below; an obscure whitish subventral line. Subdorsal lines 
free at the ends. Depressed spaces whitish, not contrasting, (1) and 
(4) faintly dark centered. Granules rounded, not conic as before; not 
contiguous, but the sides a little angularly adapted to each other. De¬ 
pressed spaces very small, the smallest, as (2), covered over by the 
granules which are a little smaller there than elsewhere. Space (1) a 
small elliptical smooth area. Setae inperceptible. The shape is as in 
A. y-inversa except that the lateral ridge is more prominent, exceeding 
the subventral ridge. Length 9.5-12 mm.* Duration of the stage 7 
days. 
Cocoon and pupa as usual. 
Food-plants. —Oak. Usually on Q. alba , less commonly on other 
oaks. 
EXPLANATION OF PLATE IX. 
Fig. 1. Larva in stage I, dorsal view, enlarged X 60. 
“ 2. Larva in s'age II, side view, enlarged X 3 °- 
t( 3. Larva in stage VII, front view, enlarged. 
“ 4. The same, side view. 
“ 5. Moth of Apoda biguttata, natural size. 
“ 6. Granules of stage II, enlarged. 
“ 7. Larva in stage VII, early in the stage, dorsal view. 
“ 8. Larva in stage VII, mature. 
“ 9. Granules of stage V enlarged, from area of subdorsal ridge. 
“ 10. The same, stage VI. 
* A larva with six stages had the following lengths: I, .9-1.5 mm., II, 1.5-2.4 
mm., Ill, 24-3.6 mm,, IV, 3.6-5.5 mm., V, 5.5-84 mm , VI, 8.0-11.2 mm. 
