Article beginning on page 70.
Psyche 8:70, 1897.

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7 0 P..YIT&VZ. [May 1897.
LIFE HISTORY OF EUCHAETES EGLENENSIS AND COM- PARISON WITH E. COLLARIS.
BY HARRISON G.
Egg.
Large, rounded conoidal with flat
base, very shining, deep ocher yellow; reti- cnlations fine, hexagonal, linear and very obscure; diameter .'7 mm., height .6 mm. Laid in patches of considerable size, the several eggs not contiguous.
Stage I.
Body pale yellow, warts large,
black ; feet and shields dark; joints 4 to 6 reddish, forming a band, as also joint 10, but fainter. On prothorax four setae on the
shield and one detached, two on the prespir- acular tubercle, two on the subventral tuber- dc; joints 3 and 4 with three setae from the wart ia +ib, one sela from iia, a very fine one from ib, one from iv and two from vi; no subprimary setae on the thorax. On ab- domen two setae from wart i, one from ii, two from iii, one each from iv and v, two from the leg plate; the subprimary tubercle vi is present on joints 5, 6, 11 and 12 but hears no seta; vii and viii present on the ap- odal segments. On joint 13 the subdorsal tubercle (i + ii iii) hears only four setae. Lobes of head black, clypeus whitish ; width .^ mm.
Sfayes Il-W. As in the mature larva
but the hair tufts shorter and smaller, only the , dorsal ones (i-iii) with any plumed hairs, consequently appearing less hairy. The youngest ones are a little greenish. Partly gregarious at first, hanging by a thread if disturbed. The habits are much as in .E qle. Widths of head .7, I, 1.5 mm. .Sfaxe V. Head shining reddish orange,
pider in the sutures, ocelli dusky; width 2 mm. Body orange red, a shade paler than
the head, iminaculzte. Warts small, neat, black, the hair bunches composed of short spindated hairs basally, feiithery ones cen- trally. compact, subpencilled, not concealing the body ',' short and even. 1.5 to 2 mtn long, those from warts i and ii on joints 3 and 4 DYAR, NEW YORK.
longer, on +-about twice as long, on 3 three times as long as on the others. Hair all sor- did silvery gray; leg plates blackish. Tu- bercles i to vi normal, iv scarcely smiiller than v ; four warts on joints 3 and 4 ; cervical shield and anal plate reduced, represented each by four small warts. Joint 2 slightly retracted, considerably reduced.
Suchaetes colluris has the same number of stages and the same widths of head. The
eggs are likewise large, rather hemispherical. In the first stage tubercle i is single-haired throughout, but otherwise the setae are just the same, with the curious non-setiferous tu- bercles vi on the apodal segments. The
head is paler, having only a dusky shade at the vertex of each lobe. In all the subsequent stages the body is whitish and the head sil- very gray, the hair tufts spreading, not pen- cilled, forming an even smooth coat rising about 2 nlm. above the back, longer at the ends. Tlie -warts are concolorous with the body, not blackish ; there are no marks. In habit the larvae differ by their tendency to concealment and are hence less often seen. They feed on the dogbane (Apocynuin)
while E. eglenensis prefers milk-weed
{ Asclepias).
In previously published accounts of E. col- laris, Jewett seems to describe four stages and Edwards implies six, but in neither case is the number definitely slated.
BUTTERFLY SOUNDS. - Carl Frings stnter
(Soc. ent., Mar. t, 1897) that when some bred specimens of Paruassitts afiollo were dis- tin-bed, they spread their wings out flat and produced ii distinct (recht laut) noise by a forcible and continued grating- of the hind tibiae and tarsi against the basal field of the hind wings, which is rather thickly beset with stiff hairs.




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