Article beginning on page 122.
Psyche 3:122, 1880.

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PSYCHE, Organ of the Cambridge Entomol~~cat Clnb. -
RATES OF SUBSCRIPTION, ETC.
FAY- IN ADVANCE.
Su6ScriffHons nwl diwmttinued are <!insidered renewed.
Sample copies, postpaid, . . . 10cents.
YearlymbwrlpUon,postpaid, . . . $1.
One volume (three yeara), postpaid, . - W. Yearly, piloted on one side of tl~h paper (for pasting the titles of the bibliogmphioai r6Coid on title-slips,) poatpaifl, . . , $1. One volume, printed on one aide of thin
papar, postpaid, . . . . . . $8.
One volume (regular) and one volume on
one side of thin paper, postpaid, , . . f&. Twenty-flve extra copies, without change of from, to the author of any leading article, If erdered at ifta tine of smeltng copy, . Free. Author's extras over twenty-five in. nnm- bM, underabove mentioned conditions, each, So.
Separates, with changes of form -actual cost of such changps in addition to above rates. SS~ Only thoroughly respmtabile ad~ertiseinenti will be allowed in PSYCHE, and the advertiBia$ page@ will be numbered consecutively with thou< of reading matter and Indexed at the end of tin volnme. The eflltora reserve the right to reject advertlsernmta.
Sabscribera to P S S ~ can adv6Tliue Insects for exahange or desired for study, not fw cash free, nt the discretion of the editors.
Begnlar style of advertlaemenia plate, at thi followine rates : -
Oufc*Me Taride
Plies, Pitgei.
Per 'tine, first tnirertkin, , . $0.10 $0.08 Eighth page, flrat Insertion, . , .la .CO Quarter
" tG , , 12'5
'1.~0
Half
*'
. . , Z.25 1.75
Om
'$ . . 4.00
3.60
Each vut~eqwd ioswtilm wie half the ahose rates. Addreia EDITORS OF PSYCHE,
Cambridge, Mass., U. S. A
Subscriptions alao received in Europe by B, ERIEDLAYDBR & SOUS',
Carifitmuse 11, Berlin, Ìö W
ENTOMOLOGISTS' MATERIALS FOR SALE.
Klaeger's best Insect-pine, 36 mm. long, no. ?-5 i 39 mm. long, no. W7. Per lW: no. 2-6,91.10; otii- era, $1.20. Per 6000, #.Wand 95.50. Other aorta on hand or to ordm rifu w^ri ftt th8M ratus only in pm!.mges of 900, mnftBer tots, 20 cta. per 100 ; &am- pies, 6 cta.
Double boxes, for storing, 10XB Xs5 cm., la cts- Ljglit mailing boxes, l7X 2S m., and half and qnar- ter size, 30,8,6 cte.
Cork in alieeta aOXS.6 X 0.6 cm., 12 "16. per 13'116et, $LOO par 10 sheets.
Stout glass tubes, for alcoholic specimens, 8 X 60 mm., 10XCO mm., 12x70 m., $1-30,$l.40, S1.M per, 100 ; rubber stoppers for these, $1.00, $l.iiO, S1.60 per 100 ; tnlw and stopper, 3 0%. Other ~\ssfn of tubes and stoppers on hand or to order.
lilaiifc labels, rea-bordoretl, BaXIt mm., 35 Ctu. par 1COO ; 5 XIS mm., 46 cts. per 1W. A set of 100 generia and KM specific labels, printed on above blanks, for Un itef! States and Canadian butterflies, complete to 1S78, $1.00. Twelve sheets of printed lftlwl$, contraining the names of t,Im 'North Ameri* can States and Territoriesi, of months, and. signs for aexc9,2 cti. a sheet, and 2 cts. postage. Photographs ofProfliyn?, the firat known North American fn%dJ btitterfly ; ot the anatomy of the upper and of the under side of IToqmTm dginesas, and oftbe undm sidn otJ^~so~uscerv^s i each 50 om. Traiisportfttion on pins and labels, prepaid ; on otl1m wads &str&.
I3 : PICKMAN MAMT, Cambridge, Mass.
EARLY S TAGES OF B UTTSSyUSS WASTED.
Tbe mider$igned desires to obtain, by exchange qr otherwise, from aU parts of the world, eggs, caterpillnra and ciirysaUda of Diurnal LepMop- tern. Dried specimens nre preferma, especially of caterpillars, which should be prepared tyr in- fiation. å´Cnmspondeuc is invited with persona engaged in the atudy of tho early stages! of buttet- flies. S. H. SCUBDER,
Cambridge, Mass,
NATURAL BISTORT A WCY.
The nndemlgnedhas forsale Entornologbts'ma- terial of &U kin&, Inaecta, and Entomological booka.
Collections of haecta for beginners or for scliools tarnished at reasonable rates. Seveml largo collections of Amerlcsn and foreign inseota, principally Coleoptera, for sale uheap.
Books md material'! in other bmnabes of Nab '
ural History proma fir parties at a distance, at the lowest prices,
Liefa of books, specimens, etc., sent for 10cents. E: P. ACSTIK, 48 Bast Newton St.,
Boston, Mi~aa.




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