Article beginning on page 276.
Psyche 6:276, 1891.

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PSYCHE.
[June 1892.
front one-fourth width of head, of equal like bristles, which latter are very much width, frontal bristles stronger, two orbital weaker; claws and pulvilli only a little elon- bristles directed strongly forward; third an- gate. Abdomen less conical and nearly as tennal joint not so narrowed, palpi and labella wide as thorax. more yellow. Macrochaetae of abdomen Length of body, nearly 7 mm. ; of wing, more differentiated from the macrochaeta- 6 mm. THE EARLY STAGES OF NERICE BIDENTATA.
BY CAROLINE G. SOULE, BROOKLINE, MASS.
The egg, found on the under side of an
elm leaf, Aug. 9, 1891, was hemispherical, the flat side being attached to the leaf. It was greenish yellow with a whitish bloom over it, and was very like the egg of Nadata gibbosa. It hatched on Aug. 13th.
The young- larva was A inch long, of a
deep green color, and with sparse hairs. Head brown, lighter on the median suture. The fifth segment had a dorsal and sub-
stigmatal spot of shining brown, and the 11th segment had a dorsal spot of the same color. The feet and props were shining
brown in color. Anal props were very
slender and were raised when the larva
walked. The body, at rest, was arched
between the feet and abdominal props, and between the abdominal and anal props.
Aug. 16. ist moult. Length 4 inch.
Head large, almost round, bilobed, pale
olive green with dark green face-lines.
Body pale glassy green, darker on the dor- sum. The glassy effect was striking. 5th segment had a large brown double tubercle on the dorsum, and a substigmatal, smaller one on each side. The tenth segment had
a substigmatal brown patch on each side, and the 11th a brown single tubercle or
hump, on the dorsal line. Feet brown.
Anal props striped with brown; abdomi-
nal props brown.
Very short, sparse hairs
all over the body. Head very smooth.
Body arched when at rest, as before.
Aug. 20. 2nd moult. f inch long. Head
much larger than 1st segment, clear green, glassy, with brown face-lines. Body glassy green, translucent, with very few hairs; a faint white lateral line, and a brown, broken substigmatal line appeared ; the brown sub- stigmatal patches on 5th and loth segments were as before. 5th segment had a large
double hump, tipped with brown, nth had
the large single hump as before; 4th and 6th had each a double wart on dorsum.
Feet brown and shining. Props pale brown banded with dark brown. Anal props
slender. Rested arched as before. Ate the leaf from the edge to the mid-rib at the tip, and rested on the bared mid-rib. Aug. 21. The marks had grown clearer and each
segment from 6th to loth showed a small
brown-tipped wart on the dorsal line, and from each wart a white oblique line ex-
tended downward and backward, on each
side. On the first 3 segments a white sub- dorsal line appeared. The effect of the dor- sal line was that of the edge ofa serrate leaf. Aug. 23. jd moult. 8 in. long. Head
large, round, bilobed, smooth, green with dark face lines. Body green, with a broken, brown substigmatal line edged above with yellow, and a double yellow stigmatal line. First three segments had a double white sub- dorsal line. 4th segment had a double dor- sal hump, tipped with brown; sth, a much larger double hump, yellow green, tipped with brown, the brown extending down the front and back like a dorsal line lifted by the hump ! 6th to 10th segments had simi- lar humps, but smaller, like that on 4th. 11th segment had a large single hump with brown tip. From all these humps extended oblique white patches. Feet green with a dark, vertical line. Props pale brown




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June 18gz.] PSTCHE. 277
banded with darker brown. Anal props
slender, green with a vertical brown stripe. Anal shield shining green like the head. Spiracles, heretofore unnoticeable, green with a brown line on each side, and from them spread white lines like veins, distinct on the green sides of the larva.
Aug. 27. 4th moult. I inch long. Head
large, round, smooth, shining green, with a white line on each side of the median
suture, and a black line about halfway be- tween this and the edge of head. This
black line was edged with whiter on the
outer side. Body green. First three seg- ments had, on each side of dorsum, a wide white longitudinal line, below that a nar- rower one, below that a broken one. The
humps were as before except that on 11th segment, which became double. All the
humps were unevenly double, the first point being longer than that behind it, as if the second point grew out of the base of the first. The white patches extended up the sides of the humps, and between these
patches the green of the body, on the sides, made oblique lines. Sides and venter
green. There was a broken substigmatal
line of brown edged above with yellow, ex- tending from head to tips of anal props. Feet green with a vertical dark line. Props. green with a brown bar, this bar being
crossed by two darker brown lines.
Aug. 30. The brown of the tips of the
humps had almost disappeared; as had the substigmatal line. The principal color was semi-opaque white, through which the deep blue-green of the body appeared in lines here and there,-notably the oblique lines on the sides,-and on the venter.
Sept. id. The larva was if inches in
length and A inch from the venter to the tip of the hump on 5th segment. In the
afternoon it grew dull in color, the humps seemed to be retracted, and, the next day, were almost level with the dorsal line, and the larva looked small and moist. It spun a few threads to fasten a leaf to the tin. Sept. 8th. The pupa appeared. Ptt-pa
}+ inch long, neither stout nor slender, dark brown with much darker head, thorax, wing-cases, anal point, and bands between the segments. Eye-cases prominent and
very smooth. Segments distinctly ridged
on the edges, and pitted between these
ridges. Anal point long, slender, sharp. The pupa was very active, rolling a foot or more at a time.
MISCELLANEOUS NOTES. - By accident the
pages of the last number of Psyche were
marked April instead of May.
An interesting sketch of protective resem- blance as displayed in the animal world was given in February before the Belgian acad- emy by Dr. Felix Plateau, and will be found in its Bulletins, pp. 89-135. Interesting ex- amples among insects are given.
A new classification of the Acaroidea with full details and an enumeration of the genera is given by Dr. Trouessart in the Revue des sciences natnrelles de 1'Ouest of Paris for January, 1892. Five suborders and ten fami- lies are recognized and six of the latter are separated into twenty-fouf subfamilies.
The eighth part of the leisurely Introduc- tion to entomology by Kolbe has appeared and contains some interesting summaries. The consideration of the muscles is con- cluded, and the mechanism and physiology of flight and other movements considered with interesting topical bibliographies. The nervous system is then taken up and its main features and especially the brain discussed, followed again by bibliographies.
The extensive but in no way expensive
work upon the families and genera of butter- flies begun in 1885 by Schatz and continued after his death in 1887 by Rober has just been completed by the publication of the sixth part. The neuration of nearly five hundred different butterflies, representing almost as many genera and accompanied by some rude details of the structure of the legs, palpi, and



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