Article beginning on page 42.
Psyche 4:42, 1883.

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42 [May-Jane IS.}.
Psyche, A Journal of Entomology.
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SATES OF SUBSCRIPTION, E -IC.
PAYABLS IN ADVANCE.
piP Suiscr@Urns not discmfm~ed we cothided mewed.
Corn* wi^A the numew for yamtiry
1883 the rate of sutscfiptwit is 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 bibliographical record on title- slips), postpaid, . . . . . . $%
Subscription to volume 4 (iSS3-1885)~ as above, postpaid,. . . . . . . . $5.
The wUx will mly be sent to subwibefs to the whoU volume,.
Twenty-five extra copies, without change of farm, to the author of any leading article, if of- tiered at the timt of sending copy, , , Free. Author's extras over twenty-five in number, under above mentioned conditions, each, . ac- Separates, with changes of form -actual cost of such changes in addition to above rates. -
AD VERnSWG RATES, E TC.
TEAMS CASH -STRICTLY IN AUVANCE.
Only thoroughly respectable advertisements will be allowed in PSYCHE and the advertising pages will be numbered consecutively with those of reading matter. The editors reserve the right to reject advertisements.
Subscribers to PSYCHS can advertise insects for exchange or desired for study, mot fir cash, free at the discretion of the editors.
Regular style of advertisements plain, at thefollow- ing rates : -
Oat^de Iwide
risys.
Per line, first insertion, . . . $0.10 $0.08 Eighth page, first insertion, . . -75 .6o Quarter " " " . . . 1.25 L"O
Half " " '* . . . 3.25 1.75
One " " " . . . 4^o 3.50
Each snisefite~tt insertion ow-hatf the about rates. Address EDITORS or PSYCHE.
Cambridge, Mass., U. S. A.
Subsciiption~ also received in Europe by R. FRIEDLANDER SOHN.
Caristrasse 11, Berlin. N. W.
EAR= STAGES OF BUTTERFLIES
WANTED.
The undersigned desires to obtain, by exchange or otherwise, from all parts of the world, eggs, caterpillars and chrysajids of Diurnal Lepidoptera, Dried specimens are preferred, especially of caterpil- lars. which should be prepared by inflation. Corre- spondence is invited with persons engaged in the study of the early stages of butterflies. S. H. SCUDDER,
Cambridge, Mass.
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COCCIDAE WANTED.
The undersigned is desirous of obtaining, by ex- change or otherwise, specimens of as many species of the COCCIDAE as 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 CUMSTOCK,
Department of Entomology,
The Cornell University,
Ittl~tc~t, N. Y.
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GALLS AND GALL INSECTS.
The undersigned desires, either by exchange or otherwise, Galls from all parts of the United States. He is especiatly interested in those made by wide/- tero., CoIeopterc~, fiomoptm and Diptma. Correspon- deuce in reference to Gall growths, or other vegetable abnormities, is invited. CHARLES V. RILEY, ~ j m Thirteenth St., N. W..
Washington, D. C,
TOR TRICIDAE WANTED.
I am d&rous of obtaining as many North Ameri- can TORTRICIDAE as possible, for the purpose of studying this family. I stall be glad to name and return any TORTRICIDAE forwarded to me for this purpose, save such as may prove new and desirablu to retain for description.
Pack carefully, and direct to
PROP. C. H. FERMALU. Orono. Me.
LEPIDOPTERA.
Living cocoons, pupae and ova of American lepi- dopteia bought or exchanged for other species. by Monsieur ALFRED WAII-LY, (Membre-Lauriat de la SociM d'Acclimatation de France),
Tudor Villa, Tudor Road, Norbiton,
Kineston-on+Thames, England.
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NORTH AMERICAN FERNS.
'Check lists of the Ferns of North America north of Mexico, enumerating 31 genera, 132 species and 15 varieties, on one octavo page. Will be sent by mail on receipt of the price, 15 cents per dozen copies. S. STEBBZNS, Springfield, Mass.




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