Article beginning on page 216.
Psyche 3:216, 1880.

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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 Ph~enogamous Plants of the United States, east of the Mississippi, and of the Vascular Cryptogamous Plants of North America, north of Mexico. sd 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 $1.00; 13 for $3.~; sent free by mail.
B: PICKMAN MANN,
Cambridge, Mass.
TOR TRICIDAE 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 any TORTRICIDAE forwarded to me for this purpose, save such as may prove new and desirable to retain for description.
Pack carefully, and direct to
PROF. C. H. FERNALD, Orono, Me.
CANADIAN ENTOMOL O GIST.
Edited by William Saunders.
Published monthly.
The volume for 1881 is the
15th.
Price $1.00 per annual volume (together with the Annual Report of the Entomological Society of Ontario). Address remittances to
E. BAYNES REED, London, Ontario.
BULLETIN of the BROOKLYN ENTOMO-
LOGICAL SOCIETY.
Edited by F. G. Schaupp.
Published monthly. Price, $1.00 per annual vol- ume. Address remittances to the Editor,
9 Broadway, E. D., Brooklyn, N. Y.
PAPZLIO.
Devoted to Leftdoptera exclusively.
Edited by a committee.
Published ten times in
the year. The volume for 1881 is the 1st. Price, jjSa.00 per annual volume. Address remittances to MR. HENRY EDWARDS,
185 East 116th St., New York, N.Y.
gal?" European exchanges and communica-
tions will receive more immediate attention by being addressed to
GEORGE DIMMOCK,
Leipzig, Germany.
LEPTDOPTERA.
Living cocoons, pupae and ova of American Lep- idoptera bought or exchanged for other species, by Monsieur ALFRED WAILLY, (Membre-Laureat de la Sociktk d'Acclimatation de France),
110 Clapham Road, London, S. W.,
England.
DIMMOCK'S SPECIAL BIBLIOGRAPHIES.
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. .
NO. 3. THE WRITINGS OF SAMUEL HUBBARD
SCUDDER. Compiled and edited by George Dim- mock. Aug. 1879. 28 p. t 19 X 12.5. Price 50 cents. Address EDITORS OF PSYCHE,
Cambridge, Mass.
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. STEBBINS, Springfield, Mass.
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 ob- tained. J. HENRY COMSTOCK,
Department of Agriculture,
Washington, D. C.
No. 84 was issued 18 Aug. 1881.




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