Dec. x 8 9 3 ] Dyar: Life-Histories of N. Y. Slug Caterpillars. 245 
Stage IV. Elliptical, tail rounded quadrate, in general as T. pal¬ 
lida ; ridges, especially the sub-dorsal, slightly segmentarily waved. 
Depressed spaces deep, well marked with perpendicular sides. Skin on 
the latticed ridges shortly, finely, densely white pubescent with minute 
colorless fur arising in a crown from each small granule. On the 
ridges the fur is usually dark, but it may be pale and concolorous with 
the rest. Granules nearly uniform on all the latticed ridges, which 
are at least four granules wide. Depressed spaces (i) to (8) present 
( 7 ) and (8) partly confluent obliquely. Color light yellowish-green’ 
sparsely pigmented in patches dorsally and in the upper half of lateral 
space, the ridges clearer. A narrow wavy yellow sub-dorsal line on 
joints 4 to 13, often appearing double at a certain angle by the refrac¬ 
tion of the distinct clear ridge, the pair connected by a narrow crim¬ 
son bridge on joint 8, varying in different examples. A faint yellow 
or salmon colored transverse band on the anterior edge of joint 3 
shaded dusky by the dark rosette spines. Sides paler green, depressed 
spaces darker, without colored centers. Head green, width about .5 
mm. Length, 2.6—4.0 mm. 
Slag e V. —Elliptical, tail rounded, slightly notched at the sides; 
dorsal space about half as broad as the lateral one, flat; lateral space 
steep above, slightly concave ; subventral small, retracted; the larva is 
therefore flattened. Subdorsal ridge indicated by the angular change 
indirection between back and sides; lateral ridge prominent. . De¬ 
pressed spaces fairly large, distinct. Latticed ridges rounded, the 
sides not always perpendicular. The skin looks smooth, minutely 
granular, even shining a little; but under a high power the 4 to 6 ro¬ 
sette spines are still seen on the granules, very short and pale. The 
granules are small, rounded, not quite contiguous, uniform all over, 
the narrowest latticed ridge four granules wide. The rosette spines 
are dusky on the anterior edge of joint 3. Color bright yellow green, 
rather translucent on the edges. The yellow subdorsal lines extend 
from joint 3 posteriorly to joint 13 anteriorly, narrowed at the addor- 
sal de P r essed spaces, slender, not reaching the extremities. A yellow 
band on joint 3 anteriorly, shaded with crimson below. Depressed 
space (4) yellow in the base with a green center. Subdorsal lines free 
at the ends, a yellow bridge centrally, varying in different examples. 
It may become broad, covering joints 7-9, containing a round red 
• s P oton joints 7-8, scarcely even widening the subdorsal line. Leno-th 
3.8-5.7 mm. 
