Article beginning on page 144.
Psyche 3:144, 1880.

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144 -.?srcHE.
ADVERTISEMEHTS
should reach the editors by the loth of the month preceding the one in which they are to appear.
MAVWS CATALOGUE OF PLANTS.
Catalogue of the Phsenogamous Plants of the United States, east of the Mississippi, and of the Vascular Cryptogamous Plants of North America, north of Mexico. ad ed.
5% r^cogrzized sffffftfelfrf 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 $~.oo; 13 for $3.00; sent free by mil.
B: PICKMAN MATW,
Cambridge, Mass.
TOR TRICIDAE WAWT-ED.
I am desirous of obtaining as many North Ameri- can TORTMCIDAE as possible, for the purpose ol studying this family. I shall be gkd to name and return any TOCTRICIDAE 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.
--
PUBLISHED FORTNIGHTLY.
ANNUAL SUBSCRIPTION (Pwtpd), M 6.50=$1.62, Entomologische ITachrichtea,
VI. Jahrg. 1880.
Baron v. Harold. EntomologicalMuseum of Berlin, says of this magazine : -
.
" It is a complete repositmy of interesting and inatnit- tire notices; of practical directions for collecting, ob- serving and preparing specimens; of proposals for exchange and sale of insects; of litermy information and notices of iMolisi and correspondence. In short,
it has prored Itself the special orpan for the enconrage.. rnent and progress of the Science of Entomology." May be obtained of all booksellers; and from the publisher,
At DOSE,
PUTBUS A. RUGEN,
GERMANY.
Buck volumes may be had from the same, iS;s & s.50 K; )@TÌö~M tWi5M; rSiqi&sa M.
E@"- European exchanges and wmmunica-
tiona will receive more immediate attention by being addressed to
GEORGE DIMMOCK,
Uipzig, Germany.
LSPIDOPTSRA.
Living cocoons, pupae and ova of American Lap- idoptera bought or exchanged for other species, by Monsieur ALFRED WAILLY, (Membre-Laur&at de la Soci4t6 d'AccIimatation <ie France),
no Clapham Road, London, S. W.,
1 England.
DIMMOCK'S SPECIAL BIBLIOGRAPHIES.
NO. 1. THB EMTOMOLOGICAL WRITINGS OF
JOHN L. LBCONTE
Compiled by Samuel Hen-
shaw. Edited by George Dimmock. Nov. 1978. 11 p. t 19 X -5. Price, 30 cents ; on 5 X x q title- slips, $1~5.
No. a. THE ENTOMOLOGICAL WBITIWGS OF
GBOXGE H. Horn. Compiled by Samuel Henshaw. Edited by George Dimmock Jan. 1879. 6 p. t 19 X ia.$ Price, 20 cents; on 5 X 1a.S title-slips, 50 cents.
NO. 3. THE WR~INGS OF SAMUEL HTOBARB
S~~DDEK,
Compiled and edited by George Dim-
mock. Aug. 1% BB p. t ig X 1a.5. Price SO cents, Address EDITORS OF PSYCHE. -
Cambridge, Mass.
NORTH AMERICAN FERNS.
Check-lists of the Ferns of North America north of Mexiw, enumerating 31 genera, 132 species and 15 varieties, tin one octavo page. Will be sent by mail on. recel-pt of the price, is cents px dozen copies.
S. STBBBIMS, Sphrfidd, Mw,
COCCIDAE WAJfXED.
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 infest in^ cultivated plmis especially desired. Living specimens preferred when fliey can be ob- tained. J. HENRY COMS~~CK,
Department of AfricultBte,
Washington, D. C.
No, 78 was issued 12 Feb. 1831.




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