Article beginning on page 204.
Psyche 3:204, 1880.

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PSYCHE.
ADVERTISEMENTS
should reach the editors by the 10th of the month preceding the one in which they are to appear.
MANN'S CATALOGUE OF PLANTS.
Catalogue of the Phaenogamous Plants of the United States, east of the Mississippi, and of th; Vascular Cryptogamous Plants of North America, north of Mexico. ad ed.
The recognized standard exchange list.
Each species bears the same numero as in the 1st ed., so that the 3824 numeros serve to designate the respective species. Price : 35 cts.; 3 for $I.% 13 for $ym: sent free by mail.
R: PICKMAN MANX,
Cambridge, Mass.
TORTRICIDAE WANTED.
I am desirous of obtaining as many North Anieri- can TORTRICIDAE as possible, for the purpose of studying this family. I shall be glad to name and return anv TORTRICIDAE forwarded to me for this European exchanges and communica-
tions will receive more immediate attention by being addressed to
GEORGE DIMMOCK,
Leipzig, Germany.
LEPID OPTERA.
Living cocoons, pupae and ova of American Lep- idoptera bought or exchanged for other species, by Monsieur ALFRED WAILLY, (Membre-Laurtat de la Sociktt d'Acclimatation de France),
110 Clapham Road, London, S. W.,
England.
DIMMOCK'S SPECIAL BZBLZOGRAPHZES.
No. I. THE ENTOMOLOGICAL WRITINGS OF
JOHN L. LECONTE. Compiled by Samuel Hen- shaw. Edited by George Dimmock. Nov. 1878. 11 p. t 19 X 12.5. Price, 30 cents ; on 5 X 12.5 title- slips, $1.25.
No. 2. THE ENTOMOLOGICAL WRITINGS OF
GEORGE H. HORN. Compiled by Samuel Henshaw. Edited by George Dimmock. Jan. 1879. 6 p. t 19 X 12.5. Price, 20 cents; on 5 X 12.5 title-slips, 50 cents.
purpose, save such as may prove new and desirable 1 to retain for description.
No. 3. THE WRITINGS OF SAMUEL HUBBARD
Pack carefully, and direct to
SCUDDER. Compiled and edited by George Dm- "OF. '. *. FERNALn' Oiono* Me.
mock. Aug. 1879. 28 p. t 19 X 12 5. Price 50 cents. Address EDITORS OF PSYCHE,
I
PUBLISHED FORTNIGHTLY. Cambridge, Mass.
ANNUAL SUBSCRIPTION (Postpaid), M 6,50=M,62. 1
I
NORTH AMERICAN FERNS.
Entomologische Nachrichten,
1
Check-lists of the Ferns of North America north VI Jahrg. 1880. of Mexico, enumerating 31 genera, 132 species and -
15 varieties, on one octavo page.
Will be sent by
Herausgegehen \an Dr. F. Katter.
mail on receipt of the price, 15 cents per dozen Baron v. Harold, Entomological Museum of Berlin, copies.
says of this magazine : -
S. STEBBINS, Springfield, Mass.
It is a complete repository of interesting and instruc- 1
tive notices; of practical directions for collecting, ob- I COCCIDAE WANTED. serving, and preparing specimens; of proposals for exchange and sale of insects; of literary information and notices of books; and correspondence. In short, it has proved itself the special organ for the encourage- ment and progress of the Science of Entomology." May be obtained of all book-sellers ; and fro,,, the The undersigned is desirous of obtaining, by ex- change or otherwise, specimens of as many species I of the COCCIDAE as possible, for the purpose of making a study of the North American forms. Those found infesting cultivated plants especially desired. publisher,
1 Living specimens preferred when they can be ob- A. DOSE, ' tained. 1. HENRY CONSTOCK,
PUTBUS A. RUGEX,
i
Department of Agriculture,
GERMANY. 4
Washington, D. C.
Bid volumes may be had from the same, IS;^ ?I 2.50 M; 1877 a 3 M; 1878 a 5 M; 1879 it 6.50 M. No. 83 was issued 25 July 1881.




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