22 
Its Life History. — The Egg. — Unknown. 
The Larva. — This in shape and size-very much resembles the Cabbage Worm ( Plusia 
brassicce,) and, like it, when disturbed draws itself up and has the appearance of ageo- 
metrid larva. When full grown it measures one and one-tenth of an inch in length. 
Pale green, with a wavy, yellow stigma line and a supra-stigma creamy white line 
and two pale dorsal lines, 8 transverse black warty dots on segments with two more 
on dorsum back of these, from all of which issue pale hairs ; on either side of the 
dorsal black warty tubercles is an irregular yellowish line, and an indistinct yel- 
lowish oblique line extending from the outer line obliquely between the first pair of 
tubercles and last pair to the dorsal lines. The six true legs are pale, glassy, and 
there are prolegs on ninth, tenth, and anal segments. Head green, with sutural edges 
dark and a few hairs at sides. 
The Pupa.— Length, .42 inch ; greatest width, .15 ; wing cases, .21 inch ; pale yel- 
low brown, the fifth segment rather strongly constricted anteriorly and widest ; the 
edges of all the segments anteriorly dark brown. 
The Moth. — Wing expanse from one inch and ten-hundredths to one inch and fifteen- 
hundredths. The fore wings are grayish brown, with a few short, indistinct, wavy, 
lighter grayish lines interspersed ; transversely across the fore wing near the outer 
margin is a light gray or slightly yellowish band. 
The hind wings are uniformly gray, fringed with short cilia ; beneath, silvery gray 
with numerous brownish gray scales at anterior margin and on fore wing. 
Its Injuries. — The worm feeds on the leaves and the bean pods, some- 
times stripping the vine bare. 
OTHER BEAN INSECTS. 
A Katydid ( Phylloptera oblongifolia Dels.), a Butterfly larva ( Euda - 
mus proteus Linn.), and a Tineid are also found damaging this crop. 
INSECTS AFFECTING THE SQUASH. 
In Florida there are many insects found feeding on this plant; the 
Cucumber Flea-beetle (Crepidodera cucumeris Harris), thel2-spotted Dia- 
brotica ( Diabrotica 12-punctata Oliv.), a jumping bug (Halticus bractatus 
Say), the False Chinch ( Triphleps insidiosus Say), a Mining Fly ( Oscinis ), 
and an Aphis (Aphis cucurbitce Buck ton) are common on the leaves and 
stems, but have not been observed to do much injury. The life histories 
of and observations concerning the more injurious are given below. 
THE SQUASH BUG. 
(Anasa tristis DeGeer). 
When this bug exists in quantities probably there is no more inju- 
rious insect known to squash and pumpkin vines. The mature bug 
hibernates in the winter under debris, old vines, dry grass, boards, &c., 
and from early spring to late fall there is a continual succession of 
broods. 
I have taken some specimens in mid-winter, on warm days, in old 
fields and on fences. 
Distribution. — It is found generally throughout the United States and 
