Article beginning on page 415.
Psyche 7:415, 1894.

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mouth brown ; width .s mm.
Body entirely
colorless, the hairs single, rather long. white: anal feet rather large, divergent; length 2.5 mm. Later certain of the dorsal hairs (of tubercle ii) and all the warts become blackish. After feeding the body
is greenish from the food showing by trans- parency, the head, thoracic feet and joint 13 slightly yellowish. Warts normal, single haired, iv behind the spiracle, vi .absent, an oval dusky leg-plate with several hairs; on joints 3 and 4 tubercles in, ib and iia from a single area, iih weak, remote, iii and v absent, vi with two hairs.
On joint 13 i, ii
and iii from a. single area, iv and v from a single area, the anal plate with 10 hairs. Singe II,
Head yellow, shining, ocelli
black; width .4 mm.
Body whitish, yellow
at the ends as in the mature larva; warts all black, neatly defined, several, haired, arranged as in the mature larva, the sub- primaries present, normal.
Hair black and
white mixed, the white the most numerous, spinulated; warts iv and v on joints 5 and 11 a little larger than elsewhere, the hairs, however, all alike. Leg-plates pale.
Sfuge III. Head .6 mm., whitish, the
ends of the body yellow; warts black, all much as before, the hairs quite dense, but not at all obscuring the body, vario~~sly curved, from six to ten arising from each wart.
Stnge IV. Head .8 mm. The same, the
warts distinct, neatly defined; hair a little thicker laterally on joints 5 and 11, indicating the tufts, but no plumed hairs present.
Stwe V. Head 1.2 mm. There is no
change; length about 14 mm.
Stctge TI. Head 1.7 mm. Similar to the
mature larva except for the absence of the side tufts, though warts iv and v on joints 5 and 11 bear an unusual number of black hairs, thus serving to suggest the tufts. The hairs are all alike, black and white, of even length, abundant, but fine, not obscuring the body. A distinct orange mark on joint 12 before the spiracle. A few long hairs
anteriorly.
Stqe VII. Mature larva. Head yellow,
ocelli black, mouth brown; width 2.4 mm. Body yellowish
on joints 3, 4, 12 and 13,
joint 12 most distinctly so, as also the feet; warts and spiracles black; i lo iii normal, iv small but distinct, behind the spiracles, v and vi normal, none large. Hair dense,
fine, of even length, black, and white mixed, the white predonii~mting, the appearance consequently pale gray, sparsely dashed
with black. On joints 5 and 11 dense con- colorous tufts Iatei-ally, the same length ;is the other hairs and also white and black, but heavily feathered, the black ones plumed; these tufts arise from warts iii suid iv. On the thorax there is one large wart above .the stigmata1 wart, but it is not elongated nor of unnsisal size; a few long hairs from it overhang the head. On joint 2 the cervical shield has two tiny warts on each side, a wart at the edge, a stigmata1 and a subveu- tral wart. Skin translucent, without marks. Cocoon. Large, elliptical, attached only by one side to the supporting object as in HaIisidofa cuyyae, composed of silk and the larval hairs, transparent, regular, light yel- low, intermixed with black plumed hairs; size 17 x g mm.
P+.
Rounded, shaped as in Halisidota,
the incisurcs not movable. AH pale yellow, spiracles, eyes and a row of dorsal marks black. The pupa skin is very thin, but all the essential points indicate an Arctian affi-. nity. not Lyniantriid as stated in Ent. Ainer. (vol. i, p. 86) where the editor was evidently misled by the transparent skin of the empty pupa. His statement should be reversed.
Imago in 21 days.
NOTE ON DIONYCHOPU~.~ In Psyche for
July Mr. R. A. Cooleyquestions the nccnraey of the results of Dr. W. Donitz in respect to the structures in Dionychojits nivaus Men. which could be capable of producing a sound heard by Dr. Donitz. This has led me to
examine the species, and I believe that Mr. Cooley is entirely correct. The spiny patch is present on the under side of [lie fore wing



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