Article beginning on page 386.
Psyche 3:386, 1880.

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SA TES OF SUBSCRIPTION, JS TC.
FAYAULB IN ADVANCE.
~Suf~criftions sot discowt'lUUed an co~sidmd renewed.
Commencing with fk numera for yanuwy
1883 fke rate of saiscr..i'ws iis as follows: - Yearly subscription, entitling the subscriber to one regular copy and. if-he desires it, one copy printed on one side of thin paper (for pasting the titles of the bibliographiual record on title- slips), postpaid, . . . . . . $3.
Subscription to volume 4 (1883-1885). as aSove, postpaid,. . . , . . . , $5.
Tht index will oitly it mi to subscribers &I the whole vo/v.sae.
Twenty-five extra copies, wifhwd change of fwm, to the author of any leading article, if or- dered at the time of swdmg do&, 7' . Free. Author's extras over twenty-five in numbw, under above mentioned conditions, each, . ad Separates, with changes of form-actual cost uf such changes in addition to above rates. JSS' &ieftftfic publications &sired in txchunge. -
AD VER T/S/A"G KA TES, E TC.
TERMS CASH-STRICTLY IN ADVANCE.
~SP0nly thoroughly respectable advertisements will be allowed in PSYCHE and the advertising pagem,, will be numbered consecutively with those of reading matter. The editors reserve the right to reject advertisemenfs.
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 follow- ing rates : -
outlm Inellie
P*Et- %m.
Per line, first insertion, , . . $0.10 ,Sod Eighth page, firit insertion, , . .75 .6o Quarter " " " . . . 1.25 1.00
Half '6 'a '6
. . . 3.25 1.75
One '* '* " . . . 4.00 3.50
E d subscffusni instrtioa ims-half #& abm m&s. b Address EDITORS OF PSYCHE,
Cambridge, Mass., U. S. A.
~ubscri~tions also received in Europe by R. FR~~LAKJOER & SOHM,
CarIstmse n, Berlin, N. W.
EASLY STAGES OFBUTTERFLIES
WAATES.
The undersigned desires to obtain, by exchange or otherwise, from ail parts of the world, eggs, caterpillars and chrysalids of Diurnal Lepidoptera. Dried specimens are preferred, especially of caterpil- lars. which should be prepared by inflation. Corrps. spondence is invited with persons engaged in the study of the early stages of butterflies. S. H. SCUDDER!
Cambridge, Mass
COCCIDAE WANTED.
The undersigned is desirous of obtaining, by ex- -
change or otherwise, specimens of as many species of the COCCIDAR~$ possible, for the purpose of making a study of the North American forms. Those'found infesting cultivated plants especially desired. Living specimens preferred when they can be obtained. J. HENRY COMSTOCK,
Department of Entomology,
, The Cornell University,
~ t h ~ a , ~ . Y.
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 Lqirfop- era, Colcopfem, Hemoftcm and Difiem. Corre spon- dence in reference to Gall growths, or other vegetable abnormities, is invited.
CHARLES V. RILEY,
~JW Thirteenth St., N. W.,
Washington, D. C.
TOR TRf CIDAE WANTED.
I am desirous of obtaining as many North AmerL can TORTRKlUAE as possible, for the purpose of studying this family. I shall be glad to name and returnany TORTR~CZDAE forwarded to me for this purpose, save suchas may prove new and desirable to retain for description.
Pack carefully, and direct to
PROF, C. H. FERNALU, Orono, Me.
'
LEPIDOPTERA.
Living cocoons, pupae and ova of American lepi- doptera bought or exchanged for other species, by Monsieur ALFRED WAILLY, (Menibre-burfat de la Sociitb d'Acclimatation de France).
Tudor Villa, Tudor Road, Norbiton,
Kingston-on-Thames, England.
NORTIT AMERICAN FERNS.
Check lists of the Ferns of North America north of Mexico, enumerating 31 genera, 132 species and. IS varieties, on one octavo page. Will be sent by mail on receipt of the price, 15 cents per dozen copies. S. STEBBINS, Springfield, Mate.




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