JC X LLC OCgUACLlLO dl 
INSECTS INJURING OAK-LEAVES. 147 
J/of/j. — The shape of body aud wings are well represented by Fig. 50. The general 
color is a rich, dark, velvety reddish-brown. The only markings on the fore wings 
are two twin golden dots, nearly united to form a short line near the apex of the 
female, while in the male there are two more near the base of the wing beneath the 
median vein. Hind wings pale reddish-brown : expanse of wings, 36 mm . 
202. The skiff caterpillar. 
Limacodes scapha Harris. 
This is a singular boat-shaped triangular caterpillar, green, spotted 
above with browD,pale beneath, the sides raised and the dorsal surface 
flattened ; forming in the autumn a tough rounded oval cocoon, covered 
by an outer thin envelope ; the moth appears in June. It also occurs on 
tbe hickory and wild cherry. 
Larva. — Gronnd-color pale apple green. The segments extended laterally in the 
middle of the body, and raised into an elevated ridge, sharp and angular at the 
edges. The flattened portion, which includes the dorsal region, is chestnut browu^ 
darker on the margins. There is also a darker dorsal stripe. The segments are 
arranged like the plates of a tortoise. The latter region is 
of a pale yellowish-green, with an oval white spot on seg- 
ments 9 and 10. Spiracles pale brown, mouth-parts also 
brown. In some specimens the brown color of the back 
*s reduced to small patches, and occasionally a yellow dor- 
sal line is present, the grouDd color (.pale green) then pre. 
vailing. Length, 0.85 ; width, 0.25 inch. Food-plant, wild _. r .*" 
° ° ' ' r Fig. 51.— Limacodes gcapha. 
cherry. (H. Edwards and Elliott.) ^ at 8ize 
Moth. — It is light cinnamon brown ; on the fore wings the 
costo-median region is filled in wirh a large tan-brown triangular spot, ending on the 
tip of the wing, and is lined externally with silver. Expanse of wings, 26 to 28 mm . 
203. Limacodes biguttata Packard. 
We have bred this species from a larva found upon the oak, October 
7, at Providence, E. I. The caterpillar agreed with Harris' description 
and figure of L. scapha in his Correspondence, and I referred it to that 
species, but the moth, which appeared June 1, proved to be the present 
species. There also occurred on the oak at Brunswick, Me., a larva 
like that of L. scapha, but the elevated ridges were white ; the body was 
green, with no other color. It spun a cocoon August 27, but afterwards 
died. 
Moth.— A little smaller than L. scapha; of a soft velvety buff-brown ; a whitish 
line reaches from the middle of the internal margin across and outward to the mid- 
dle line. A short corresponding one from near the costa goes to the middle of the 
outer margin, thus making an inverted broad A, inclosing at the internal angle a 
roundish red spot ; apex red. Hind wings and under side of the hind body uniform 
obscure buff brown. It is a soft, woolly species with thick scales concealing the 
veins. Expanse of wings, 25 mm . 
204. Sisyrosea inornata Grote. 
This singular and beautiful slug- worm was first described and figured 
in Harris' Correspondence (PI. II, fig. 7 ; III, fig. 6). It also occurred at 
Providence on Quercus alba, October 7-9; October 10 it spun a round, 
