476 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
While this worm is often found on apple and elm trees, the lime or. 
linden is its proper food-tree. The females are wingless and grub-like, 
much larger than the female canker-worm moth, white, marked with 
two dorsal rows of black patches; they lay their eggs in little clusters 
in orevioea in the trunk or in the branches, and in the spring when the 
leaves begin to unfold they hatch. Their habits are similar to those of 
the canker-worm, and the best means of protection against them are 
those employed against the canker-worm, i. c, the use of tarred paper 
daubed over with printer's ink or troughs of oil around the truuk of 
trees to prevent the females from ascending the trees to lay their eggs. 
The male. — Pale ocherous, with light brown specks and bands. Head, body, front 
or costal edge of the {brewings and transverse band on the wings concolorous, being 
pale brown. Forewiugs with a faint, curved, sinuate, diffuse inner line; outer line 
dark brown, slightly sinuate, with a large obtuse angle in the middle of the wing ; it 
is shaded externally with a broad pale-brown band, which breaks up into flecks on 
the outer edge ; a well-marked discal dot. Hind wiugs without any markings, some- 
what paler than the fore pair. Expanse of wings 2 inches. 
4. Eugonia alniaria (Linn.). 
The caterpillar is called the stick worm from its habit of holding itself 
out erect like a piece of a twig, to which it bears a close resemblance. 
It was observed on the linden by Dr. Harris in August and September. 
When about to pupate it spins an oblong oval, tough but thin, paper- 
like cocoon, open or loose at each end. The chrysalis is large, covered 
with bloom. The moth appeared in confinement September 25 to 27. 
(See Chestnut Insects, p. 344) 
5. Datana miniatra (Drury). 
August 26 I fouud fourteen full-grown larvae on the bass-wood or 
native linden, not differing from a colony of seventy-seven larvae found 
on the apple August 22 at Salem, Mass., and described below. The 
young as well as full-grown cluster thickly together, often raising the 
head and tail in a ludicrous manner. 
Mrs. Anna K. Dimmock gives a summary of its history (Psyche iv, 
279) as follows : 
Datana miniatra Drury (Illust. Nat. Hist. 1773, v. 2, p. 2o, pi. 14, fig. 3). Harris 
Rept. Ins. Injur. Veg., 1841, p. 311-312) describes the larva and imago, and this de- 
scription is repeated, with the addition of a wood-cut of the larva and a colored figure 
of the imago, in his Treatise on Ins. Injur. Veg., in 1862; he gives (Entom. Corresp., 
1869, p. 308-310, pi. 2. fig. 4) a description with colored figure of the larva. Grote 
and Robinson (Proc. Entom. Soc. Phil., 1866, v. 6, p. 11-12) describes the imago and 
the larva with especial reference to distinguishing it from the larva) of other species 
of Datana. Harris (I.e.) gave as food-plants of the larvae apple and cherry; Riley 
(Amer. Entom., July-August, 1870, v. 2, p. 263) adds Juglans nigra; and Southwick 
and Beutenmiiller (Science Record, 15 April, 1884, v. 2, p. 133) in a list of the food- 
plants of larva» of species of Datana, add. for D. ministra, Quercua, Corylua, Carya, 
Cratogus, Ilobinia, Betula, Tilia, Castanea. andFagus. The eggs of this species, which 
are often fouud in groups beneath t lie leaves of Betula alba, are, at least in eastern 
Massachusetts, very often nearly all destroyed by a minute hymenopterous parasite. 
