Article beginning on page 318.
Psyche 3:318, 1880.

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RATES OF SUBSCRIPTJUN, E TC.
PAYABLE IN ADVANCE.
45^ Subscrtptwns nut discoftiinud arc considfred rsftf~fffd.
Sample copies, postpaid, . . . . . . w cents, Yearly subscription, postpaid, . . . . . . $I. One volume (three years), postpaid, . . . $3. Yearly, printed on one side of thin paper (for pasting the titles of the bibliographical record
on title-slips), postpaid, . . . . $1.
One volume, printed on one side of thin paper, postpaid, . , . . . . . $3.
One volume (regular) and one volume on one side of thin paper, postpaid, . . . . $5. Twenty-five extra copies withi' change of farm, to the author of any leading article, if or- dered at the time of sending copy^ . . . Free, Author's extras over twenty-five in number, under above-mentioned conditions, each. 2 c. Separates, with changes of form-actue.1 cost of such changes inaddition to above rates. ADVERTISING RA TES. ETC,
TERMS CASH-STRICTLY 3N ADVANCE.
Only thoroughly respectable advertisements will he allowed in PSYCHE, and the advertising pages wilt be numbered consecutively with those of reading matter and indexed at the end of the volume. The editors reserve the right to reject advertisements. Subscribers to PSYCHE can advertise insects for exchange or desired for study, wt for cash, free. at the discretion of the editors.
Regular style of advertisements plain, at the fol- lowing rates : -
Outniile Instd@
pap. PtW.
Per line, first insertion, . . . . Ìàat $0.08 Eighth of page, first insertion, . . . .75 .6o Quarter " " " . . . 1.25 1.00
Half
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å . - "5 1.75
One
nn ,, 4,
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Each substguunt insertion one-half ihe ahovt rates, Address EDITORS OF PSYCHE,
Cambridge, Mass., U. S. A.
Subscriptions also received in Europe by R. FRIEOGMDER & SOKN,
Carlstrasse n. Berlin. N. W.
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fNTOMOL 0 GISTS- TERIALS FOR
SALE.
Intending not to keep goods for sale hereafter, I offer the remainder of my stock as follows :- Minute bent-wire pins. for Micros, these pins so constructed as to be mounfed conveniently on &i- nary entomological pins ; 50 cts. per loo. [No more unirnary m6owolOjficd f insforSinte.1
. Blank labels, red-bordered, 22X 14 mm., 33 cts. per loco; a/X ia nun., 43 cts. per I-.
B: P~CKMAN MANS,
Department of Agriculture,
Washington, D. C,
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' GALLS AND GALL WSECTS,
The undersigned desires, either by exchange or otherwise, Galls from all parts of the United States. He is especially interested in those made by Lepido- ptm, Coieuptsm, ffomoftem and Dtpttfu. Corres- pondence in reference to GnIl growths, or other vegetable abnormities, is invited.
CHARLES V. RILEY,
1700 Thirteenth St., N. W..
Washington, D. C.
EARL1' STAGES OF BUTTERFLJBS
WANTED,
The undersigned desires to obtain, by exchange or otherwise, from all parts of the world, eggs, cater- pillars and chrysalids of Diurnal Lepidoptera. Dried specimens are preferred, especially of caterpillars, which should be piepared by inflation. Correspon- dence ia invited with persons engaged in the study of the early stages of butterflies.
S. H. SCUDDER,
& Cambridge, Mass.
BACK NUMEROS OF PSrCiiE.
Copies of the following numeros of PSYCHE will be sold separately. - Price: s copies for 15 cis. ; 4 copies for so cts. Nos. a, 4. 5, 8, is, x4, 20. si, 25, a6,27, a% 30, 31. 37. 33, 39-4åÁ 47-48, 51-52, 55-5% 60, 61-62 (no plate). 64, 65-68. Any two of the above will be exchanged for any one of the following: Nos. 3,6,9, id.16, l8,28. 41-42. 43-44, #5åÁ 53-54.58,63. Also. nos. 6o, 70,7374 77.78.79, So. 81, 82, 83, 86. 87-89,90-92. Price per numero, 15 cts.
No. 32 (index to vol. I), w cts.
Alphabetic index to vol. 2,p cents,
[SyJkmatic
imdcx and titit-fagt to d. 2, itofyet puil~shed.} Address : EDITORS OF PSVCHE,
Cambridge, Mass.




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