Article beginning on page 262.
Psyche 3:262, 1880.

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PSYCHE.
PSYCHE, Organ of the Cambridge ,tomolo@d Club, SATES OF SUBSCRIPTION. ETC.
PAYABLE IN ADVANCE.
å Subscrzptions not discontinued are considered reviewed..
Sample copies, postpaid, . . . . . . 10 cents. Yearly subscription, postpaid, . . . . . . $1. One volume (three years), postpaid, . . . fiti Yearly, printed on one side of thin paper (for pasting the titles of the bibhographical record on title-slips), postpaid, . . . . $I.
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 without chanye of form, to the author of any leading article, if or- dered at the time of sendwg copy, . . . Free. Author's extras over twenty-five in number, under above-mentioned conditions, each. 2 c. Separates, with changes of form -actual eost of such changes in addition to above rates. ,6^ Scientific publications desired in exchange. AD VER TISING RATES, E TC.
TERMS CASH - STRICTLY IN ADVANCE.
@WOnly thoroughly respectable advertisements will be allowed in PSYCHE, and the advertising pages will 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, not for cask, free, at the discretion of the editors.
Regular style of advertisements plain, at the iol- lowing rates : -
Outside Inside
Page. Pages
Per line, first insertion, . . . . $0.10 $0.08 Eighth of page, first insertion, . . . .75 .60 Quarter " " " . . . 1.25 LOO
Half
,A '6 'a
. . . 2.25 1.75
One
,' i, C'
. . . 4.00 3.50
Each subsequent insertion one-half the above rates. Address EDITORS OF PSYCHE.
Cambridge, Mass., U. S. A.
. Subscriptions also received in Europe by R. FRIEDLANDER & SOHN,
Carlstrasse 11, Berlin, N. W.
--
ENTOMOLOGISTS' MA TERZALS 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 mounted conveniently on'ordi- nary entomological pins ; 50 cts. per 100. [No more ordinary entomologicalpins for sale]
Glass tubes and rubber stoppers at old prices. Blank labels, red-bordered, 22x14 rnm., 35 cts. per 1000; 27X 12 mm., 45 cts. per loco.
Transportation on pins and labels, prepaid; on other goods extra.
B : PICKMAN MANN,
Department of Agriculture,
Washington, D. C.
GALLS AND GALL INSECTS.
The undersigned desires, either by exchange or otherwise, Galls from all parts of the United States He is especially interested in those made by Leftdo- *a, Coleoptera, Hornoftera and Dipteru. Corres- pondence in reference to Gall growths, or other vegetable abnormities, is invited.
CHARLES V. RILEY,
1700 Thirteenth St., N. W.,
Washington, D. C.
EARLY STAGES OF BUTTERFLIES
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 prepared by inflation. Correspon- dence is invited with persons engaged in the study of the early stages of butterflies.
S. H. SCUDDER,
Cambridge, Mass.
BACK NVIMEROS OF PSYCHE.
Copies of the following numeros of PSYCHE will be sold separately.
Price. 2 copies for 15 cts. ; 4
copies for 20 cts.
Nos. 2, 4, 5, 8, la, 14, 20, 21, 25.
26, 27, 29, 30, 31, 37,38. 39-40) 47-48, 51-52, 55-56> 60, -
61-62 (no plate), 64, 65-68.
Any two of the above
will be exchanged for any one of the followii~g: Nos. I, 6, 9, 10, 16, 18, 2%~-42, 43-44. 49-50, 53-54,58. 63 No. 32 (index to vol. I), 30 cts.
[Idex to Vol. 2 not yet published.]
Address EDITORS OF PSYCHE,
Cambridge, Mass




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