Article beginning on page 206.
Psyche 3:206, 1880.

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PSYCHE.
PSYCHE, Organ of the Cambridge Entomological Club, RATES OF SUBSCRIPTION, ETC.
PAYABLE IN ADVANCE.
I&F Subscriptions not discontinued are considered renewed.
Sample copies, postpaid, . . . . . . 10 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, . . . . $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 change of form, 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-actual cost of such changes in addition to above rates. Scientific publications desired in exchange. AD VERTISING RATES, E TC.
TERMS CASH-STRICTLY IN ADVANCE.
./as- Only 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 cash, free, at the discretion of the editors.
Regular style of advertisements plain, at the fol- lowing rates : -
Outside Inside
Page. Pages
Per line, first insertion, . . . . $0.10 $0.08 Eighth of page, first insertion, . . . .75 .60 Quarter " " " . . . 1.25 1.00
Half
8, CC ''
. . . 2.25 1.75
One
'# '8 a'
. . . 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' MATERIALS FOR
SALE.
Klaeger's best Insect-pins, 36 mm. long, no. 00-3 ; 39 mm. long, no. 00-7. Per 1000: no. 2-6, $1.10; oth- ers, $1.20. Per po, $5.00 and $5.50. Other sorts on hand or to order. Pins sold at these rates only inpackages of 500; smaller lots, 20 cts. per 100; sam- ples, 6 cts.
Blank labels, red-bordered, 22x14 mm., 35 cts. per IW; 2y X 12 mm., 45 cts. per IW. A set of 100 generic and 586 specific labels, printed on above blanks, for United States and Canadian butterflies, complete to 1876, $1.00.
Transportation on pins and labels, prepaid; on other goods extra.
B: PICKMAN MANN, Cambridge, Mass.
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 Lepido- ptera, Coleoftera, 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 NUMEROS OF PSYCHE.
Copies of the following nnmeros of PSYCHE will be sold separately. Price: 2 copies for 15 cts.; 4 copies for 20 cts. Nos. 2, 4, 5, 8, 12, 14, 20, 21, 25, 26, 27, 29, 30, 319 37, 38, 39-40347-489 51-52, 55-56, 609 61-62 (no plate), 64, 65-68.
Any two of the above
will be exchanged for any one of the following: Nos. 1,6, 9, 10, 16,18,28,41-42, 43-44> 49-50. 53-54. 5% 63. No. 32 (index to vol. I), 30 cis.
[Index to Vol. 2 not yet published.]
Address : EDITORS OF PSYCHE,
Cambridge, Mass.




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