Article beginning on page 179.
Psyche 9:179-180, 1900.

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March, iqoij PSYCHE,
turned to thick stout pupae.
Abdomen small
tapering. Dark brown, the cases a little greenish. Body coarsely punctured, cases shagreened as if irregularly eroded; abdomi- nal segments ridged in front. Cremaster a long spine, widened at base and with two recurved hooks at tip.
Food plant probably locust (Robiniafieud- acacia); at least the larvae fed readily on this plant and the moths were taken flying among the trees. Eggs June ioth, mature
larvae July 10th. Single brooded, the fall and winter being passed as pupa. Larvae
from Washington, D. C.
THE KATYDID'S CALL IN RELA-
T10N TO TEMPERATURE.
The following observations on the fre-
quency with which the call of the Katydid ( Cyrto-fihyllus jersftcillatus) is repeated and their relation to the temperature at the time were made in Milton, Mass., by Mr. Roland Hayward, between August 26th and October 7, and are here printed from his memoranda. The first column gives the date, the second the temperature in degrees of the Fahrenheit scale, the third the number of calls
katy-
did" or "she did" per minute.
In all cases
they were counted for at least one minute, Aug. 26
2'7
28
20
30
31
Sept. I
2
3
4
8
9
10
I I
12 (windv)
13
14
2 1
11
24
2 .S
26
27
39
30
Oct. I
4
5 (7 p- M.)
PROCEEDINGS OF THE CLUB.
II January, ~901. The aiyth regular and
24th annual meeting (since incorporation) was held at 156 Brattle St., Mr. A. P. Morse in the chair.
The annual reports of the officers were
read. The following officers were elected for 191 : secretary, Holaiid Hayward; treasurer, Roland Hayward ; librarian, Samuel H. Scud- der ; members at large of executive commit- tee, A. P. Morse, S. 1-1. Scudder.
The annual address of the retiring presi- dent, J. W. Folsom, was read, entitled; The distribution of holarctic Collembola,- pub- lished in full in PSYCHE.




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A NEW VOLUME OF PSTCHE
began in January, 1900, and continues through three years. The subscription,
price (payable in advance) is $5.00 per volume, or $2.00 per year, postpaid. Numbers are issued on the first day of each month. Libraries and individuals generally ordering through subscription agencies (which only take annual sub- scriptions) will please notice that it is cheaper to subscribe for the entire volume at once directly of us.- Any early volume can be hd for $5.00, unbound. Address Psyche, Cambridge, Mass.
Vols. 1-8, Complete, Unbound - - - - - - $37.00. Vols. 1-8, and Subscription to Volume 9 - - - - $41.00. Val. 8 contains about 450 pp. and 8 plates, besides other illustrations. Published bv Henrv Holt & Co., New York. Scudder's Brief Guide to the Com-
moner Butterflies.
By SAMUEL H. SCUDDKR. xi + 206 pp.
umo. $1.25.
An introduction, for the young student, to the names and something of the relationship smd lives of our commoner butterflies. The author has selected for treatment the butter- flies, less thxn one hundred in number, which would be almost surely met with hv an in- diistrioiis collectirn- in a course of a year's or two year's work in our Northern Strites east of the Great Plains. and in Canada. While all the apparatus necessary to identify these butterflies, in their earlier as well as perfect stage, is supplied, it is far from the author's putpose to treat them as if they wereso many mere postage-stamps to he cliissified iind ar- ranged in a cabinet. He has accordingly
added to tlic descriptions of the different spc- cies, their most obvious stage&, some of the curioit'; facts concerning'their periodicity and their habits of life.
Scudder's The Life of a Butterfly.
A Chapter in Natural History for
the General Reader.
Bav SAMUEL H. SCUDDER. 186 pp. 16mo.
$1.00.
In this book the author has tried to present in untechnical language the stor,v of the life of one of our most coiispici~ous Ameiican butterflies. At the same time, liv introdtic- ing into the account of its anatomy, devel- opment. distribution, enemies, and seasonal changes some coinprisons with the more or less dissirniliir structure and life of other but- terflies, and particularlj of our native forms, hu has endeavored to give, in some fabhion and in brief space. a general account of the lives of the whole tribe. B,v uMn~ a single butterfly as a special text. one may discourse at pleasure nt"many. and in the liinilcd field which our native hutterflies cover, this meth- od has a certain advantage from its simplicity and directness.
.-
SMITH & SONS, 146-148 WILLIAM ST., New York. MISL'FACTURERS AND IMPORTERS OP
GOODS FOR ENTOMOLOGISTS,
Klaeger and Carlsbad Insect Pins, Setting Boards, Folding Nets, Locality and
Special Labels, Forceps, Sheet Cork, Etc. Other arLicles arc being added, Send for List, Subscribers to Psyche in arrears will confer a favor by prompt payment of bills.



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