INSECTS INJURING OAK-LEAVES. 157 
215. Janassa Hgnicolor Walk. 
(Larva, PI. Ill, fig. 5.) 
The caterpillar of this moth occurred on the oak at Providence from 
the middle to the last of September. It has been bred by Professor 
Kiley. This species is Xylinodes virgata of Packard. The larva is very 
characteristic and allied to those of Schizura. In Professor Kiley's 
collection are the regularly oval thick earthen cocoons lined with silk, 
and about three fourths of an inch in length, the caterpillar transform- 
ing on the surface or within the earth. 
Larva. — Head not very large, not so wide as the prothoracic segment ; pale, almost 
whitish ash-gray; an irregular dark ash band on each aide in front passing up from 
the mandibles and meeting on the vertex, where a branch is sent out at right angles, 
uniting with its fellow in the median line of the head ; no median line above the 
apex of the vertex, but two spurs are sent out above the vertex from each side, which 
nearly reach the median line of the head, and inclose a clear round space. Prothoracic 
segment pea-green on each side above the spiracle. Meso- and meta-thoracic segments 
bright deep pea-green, bordered with reddish below; a long narrow triangular dorsal 
light-brown band, slightly forked on the prothoracic segment, extends from the head 
to near the base of the large dorsal tubercle on first abdominal segment ; this tubercle 
is sensitive and retractile as in the other species of this genus; it is large but not 
forked, the end being very slightly cleft, blackish in the middle and each small ter- 
minal wart has a dark hair which is bent downward and forward. First to third ab- 
dominal segments pale gray and reddish-brown, the first less marbled and watered 
with gray than the second and third ; the back of the fourth to ninth segments clear 
deep pea-green, with a round sinus in front on the fourth segment, and on the sixth 
and front edge of seventh inclosing a watered gray elongated irregular patch. On 
the eighth segment a small dorsal tubercle tinted with brown ; the eighth spiracle 
much larger and more conspicuous than the others ; around the seventh pair of spira- 
cles are clear white patches. The abdominal legs 1 to 4 are thick and fleshy, with a 
reddish- brown circular line incomplete above; anal legs small and slender, about 
one-third as large as the others. Length 33 mm . 
Pupa. — Body short and thick; tip of abdomen unusually blunt; cremaster partly 
rudimentary, not projecting beyond the tip, and consisting of two widely separate 
flattened squarish spines, terminating in two small spines. Length 18 mm . 
Moth. — Pale cinereous. Pronotal pieces discolored with ligneous brown. Abroad, 
median thoracic dusky line, succeeded on the abdomen by a dark spot. Primaries 
light ashen with brown scales arranged in streaks, which on the costa proceed ob- 
liquely towards the outer margin, ending upon the subcostal nervure. Towards the 
apex are two distinct brown streaks, which are parallel to the costa; between and 
below the second streak are two whitish streaks. A dark-brown discal dot is placed 
upon the lower discal nervule, and beyond it is a brown streak. In the middle of the 
discal space is a light line which passes over the discal dot and continues along the 
lowest subcostal interspace to near the outer margin. Below the median vein the wing 
is slightly tinged with ocherous. Just below the basal portion of the median nervure 
is a brown streak, and the internal border is mottled and streaked with dark cine- 
reous. The tuft is dark-brown, and the outer edge of the wings is also darker than 
the discal portion. There are no transverse streaks. Secondaries white, the costa dis- 
closed slightly with cinereous. Abdomen nearly concolorous, being a shade darker 
than the hind wings. Beneath cinereous, with a distinct median black line. -Tarsi 
broadly annulated with dark. Length of body, .85 ; expanse of wings. 1.75 inch. 
Cambridge, female, Lansing, Mich. ; Seekonk, R. I. 
