138 MISSOURI BOTANICAL GARDEN. 
thickened, the lower edge excavated about the middle, with a tooth or 
tubercle in middle of excavation. 
Eaa. — Soft, filiform and clavate. 
Larva. — With thoracic legs but without prolegs. 
CuryYsALIs.-—With a capital projection and very strong dorsal ab- 
dominal spines. 
PRONUBA YUCCASELLA Riley. 
[Pl. 34, Figs. 1, 2, 3, 4.] 
Eea. — Thread-like, averaging 2 mm. in length, with a long pedicel 
and gradual enlargement toward apex which has a minute indurated tip. 
Larva (Pl. 34, Fig. 1, a). — Average length 14 mm. Broadest 
on thoracic joints, thence gradually decreasing to extremity, which is 
quite small, Color, carneous, with a paler greenish tint below. No 
piliferous spots, but a very few minute and short stiff hairs springing from 
the ordinary positions of such spots. A transverse dorsal wrinkle, on 
each of the principal joints, more or less distinctly divided in two by a 
medial-dorsal depression, which is sometimes slightly bluish. Joints 
deeply incised and with a lateral, sub-stigmatal, longitudinal wrinkle 
(Fig. 1,d). Thoracic legs stout but short, with three joints and a claw. 
No prolegs. Stigmata (9 pair) forming a small rufous circle on anterior 
portion of joints 1 and 4-11. Head (Fig. 1, e, f, h, t, j, k) partially 
retractile, copal-colored; epistoma sharply defined; labrum slightly 
pilose; mandibles stout, rounded, and with four acute teeth, each 
diminishing in size from without; maxille with the inner lobe rounded 
and furnished with (usually two) short fleshy hairs, the palpi four- 
jointed, the terminal joint with bristles; labium prominent, with the 
spinneret conspicuous and the palpi two-jointed —the first long, with a 
fleshy hair at tip, the second small, spherical, and also terminating in 
a fleshy hair; antenne two-jointed, the terminal joint with a bristle; 
ocelli pale, around a dark crescent. Cervical shield flattened and not 
well defined. 
White when young; more or less green and rosaceous when mature. 
Mostly curved in the fruit, like the larve of the Rhyncophora, 
Curysatis 9, (Pl. 34, Fig. 4, m, lateral view).— Average length 
8mm.; greatest diameter about # the length. Thick and stout, with the 
dorsum greatly arched. Head with a prominent, conical projection on 
top and two smaller ones between the eyes. Most characteristic feature 
a series of six dorsal, arcuated, horny plates — one on the anterior half 
of each of joints 5-10. These plates have anteriorly 10-12 blunt, flat- 
tened, recurved projections, the largest in the middle from which the 
others are successively lessened. The ends of some of the larger ones 
are shaped like the share of the more common shovel-plow. In the first 
row the arcuation is greatest, and the projections largest and directed 
most forward; all which features are gradually lessened with each suc- 
ceeding joint. Joint 11 has no plate, and but 4 posteriorly directed 
spines, while joint 12 has two broad and flattened dorsal processes. 
Tip of abdomen rounded and reaching beyond the processes. Each joint 
has a transverse series of stiff yellow hairs, and four such are quite 
conspicuous on mesothorax, and others on top of the head and on face. 
Color, when fresh, pale green, with the wing-sheaths darker. When 
mature, and just before giving forth the moth, the head, thorax, breast 
between the antennx, and tip of abdomen, are light brown; the eyes, 
dorsal plates and projections, darker brown; the wing-sheaths and 
inter-spaces between dorsal plates, whitish; and the sides greenish. 
3, (Pl. 34, Fig. 4, 1, dorsal view). — Distinguished generally by 
the somewhat smaller size; by the dorsal projections not diminishing 
