Article beginning on page 230.
Psyche 3:230, 1880.

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RATES OF SUBSCRIPTION, E TC.
PAYABLE IN ADVAKCE.
yenned,
Sample copies, postpaid, . . . . . . 10 cents. Yearly subscription, postpaid, . . . . . . $1. 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 withmi ckatigc of form, to the author of any leading article, Far- <{eyed at ths time of seÌöS'm capy. . . . 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, Scitnta~c fnb1iceUms desired ix txckavge. .. .
AD VER TISING RATES, E TC.
TERMS CASH- STRICTLY IN ADVANCE.
^Sfonly thoroughly respectable advertisements will be allowed in PSYCHE, and the advertising pages will be numbered consecutively with those of~eading matter and indexed at the end of the volume. The
editors reserve the right to reject advertisements. Subscribers to PSYCHE can advertise insects for i exchange or desired for study, sotfw cask, free, at the discretion of the editors.
Regular style of advertisements plain, at the fal- Sowing rates : -
Ontiide Iuide
Paw. Puma i
Per line, first insertion, . . . . $o.m foJoS Eighth of page, first insertion, . . . 7.5 fQ Quarter " " " . . .
1.25 1.m
Half
4, ,I nt
. . . 2.25 1.75
One
4, ,n
' . . - 4.m 3-50
Each suitegweitt insertwn. oncdulf #he above rates, ENTOMOLOGISTS' MATERIALS FOR
SALE.
Intending not to keep goods for sale hereafter, I offer the remainder of my stock as follows :- KIaeger's pins, 36 mm. long, nos. o, I, a; 39 mm. long, nos. 1-5, 7; Mueller pins, 36 rnm, long, nos. I. z,8 ; 39 mm. long, nos. 3-7, 9, /n packayes of 500. AH at $I.IO par rcm; $5.00 per 5000,
Glass tubes and rubber stoppers at old prices. Blank labels, red-bordered. 22x14 mm., 35 cis. per I-; 27 X 12 mm., 45 cts. per x m
Transportation on pins and labels, prepaid; on other goods extra.
B: PICKMAN MANET,
Department of Agriciitture,
Washington, D. C.
-
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 LsfidO- $#em, Cokbptefa, fiansqhtew and Dipera. Corres- pondence in reference to Gall growths, or other vegetable abn~~mitie~, is invited.
CHARLES V. RILEY,
1700 Thirteenth St., N. W.,
Washington, D. C.
EARLT 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. SCWER,
Cambridge. Mass.
BACK NVMESOS OF PSYCHE.
Copies of the following numeros of PSYCHE will be sold separately. Price: 2 copies for 15 cts,; 4 copies for so cts.
Nos. a. 4, 5, 8, 12, 14. so, 21, 25,
d, S7,*9, 30,3L 37,3s- 39-40.47-430 Sl-5% 55-56. h. 63-6s (no plate), 64,65-68.
Any two of the above
will be exchanged for any one of the following : Nos. Address EDITORS OF PSYCHE,
embridge. Mass.. U. S. A.
Subscriptions also received in Europe by R. FRIEDL~~RER & SOHIT,
Carktrasse ti, Berlin, N. W,
1,6, 9, 10, t4, 13, as, 41-42,43-44. 49-50. S3-S4,5& 63- No, 3a (index to vol. I), p cts.
[Index to Val. 2 list yet published.]
Address: EDITORS OF PSYCHE.
Cambridge. Mass




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