204 PST CHE. 
ADVERTISEMENTS 
should reach the editors by the roth of the 
month preceding the one in which they are 
to appear. 
MANN’?S CATALOGUE OF PLANTS. 
Catalogue of the Pheenogamous Plants of the 
United States, east of the Mississippi, and of th= 
Vascular Cryptogamous Plants of North America, 
north of Mexico. 2d ed. 
The recognized standard exchange list. 
Each species bears the same numero as in the Ist 
ed., so that the 3824 numeros serve to designate the 
respective species. Price: 35 cts.; 3 for $1.00; 13 
for $3.00; sent free by mail. 
B: PICKMAN MANN, 
Cambridge, Mass. 
TORTRICIDAE WANTED. 
I am desirous of obtaining as many North Ameri- 
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 
Pror. C. H. FERNALD, Orono, Me. 
PUBLISHED FORTNIGHTLY. 
ANNUAL SUBSCRIPTION (Postpaid), M 6.50 = $1.62, 
Entomologische Nachrichten, 
VI. Jahrg. 1880. 
Herausgegeben von Dr. F. Katter. 
Baron v. Harold, Entomological Museum of Berlin, 
says of this magazine : — 
‘‘ It is a complete repository of interesting and instruc- 
tive notices; of practical directions for collecting, ob- 
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 booksellers; and from the 
publisher, 
A. DOSE, 
PuTsus A. RUGEN, 
GERMANY. 
Back volumes may be had from the same, 1875 A 2.50 
M; 1877 23 M; 187845 M; 1879 46.50 M. 
3@™> European exchanges and communica- 
tions will receive more immediate attention 
by being addressed to 
GEORGE DIMMOCK, 
Leipzig, Germany. 
LEPIDOPTERA, 
Living cocoons, pupae and ova of American Lep- 
idoptera bought or exchanged for other species, by 
Monsieur ALFRED WAILLY, (Membre-Lauréat de la 
Société d'Acclimatation de France), 
110 Clapham Road, London, S. W., 
England. 
DIMMOCK’S SPECIAL BIBLIOGRAPHIES. 
No. 1. THE ENTOMOLOGICAL WRITINGS OF 
JoHN L. LeConTE. Compiled by Samuel Hen- 
shaw. Edited by George Dimmock. Nov. 1878. 
I1p.t19 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 I9 
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. 83 was issued 25 July 1881. 
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