Article beginning on page 214.
Psyche 8:214-216, 1897.

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PSYCHE.
[May 18pX.
13 and anal plates, milk white from spiracles to feet, extending higher on joints 4-6 and 11-12, mottled. End of joint 13 swollen
above, light brown; joint 3 a little enlarged dorsally. In the natural position of rest, curled spirally around a leaf petiole, the two largest white patches adjoin each other. Enters the earth without ultimate stage. Single brooded, feeding only on immature leaves.
Staten Island, N. Y., June I; Bellport,
Long Island ; Bedford Park, N. Y., May zj ; Fort Lcc and Plainfield, N. J., May 16 (the youngest one).
Table of genera ofXyelidae.
(By W. 1-1. Ashmead.)
I. Front wings with the intercostal vein uniting with the subcostal; hind wings with one complete submarginal and one discoidal cell. . . . . . . . 3
Front wings with the intercostal vein sepa- rated, distinct from the subcostal; hind wings with two complete submarginal cells and one discoidal cell, . . . . 3
2. Antennae 9-jointed, the six terminal
joints very short, together not longer than the scape and less than half the length of the third joint; clypeus with a median emargina- tion; claws with an erect tooth before the tip . . . . ilfacroxyela Kirby.
Antennae 10-jointed, the seven terminal
joints very short, together not longer than the scape or less than one fourth the length of the third joint; clypeus triangularly pro- duced in the middle; claws bifid;
all tibiae
very spinous, hind tibiae with 4 long spurs beneath between middle and apex
Megaxyelei Ashm.
(type X. maj'ur Cress.)
Antennae 12-jointed, the nine terminal joints much shortened, together much shorter
than the third joint; both transverse radial nervures originatingfrorn the second cubital cell; clypeus and tibiae a6 in MegaxyeZa ; claws with a large erect tooth before middle Pleuroneura Konow.
3. Antennae 12-jointed, the nine terminal joints slender, lengthened, together as long or longer than the third joint ;
claws long,
slender, with a very minute, nearly obsolete tooth beneath a little beyond the middle 4 4. Front ivings with both transverse radial nei-vures originating from the second cubital cell, rarely with the second transverse radial interstitial ; clypeus with a median ridge which is slightly extended beyond the an- terior margin, but scarcely triangularly pro- duced . . . . Manoxyela Ashm.
(Type M. califorfiica Ashm.)
Front wings with the first transverse radial nervure originating from the second cnbital cell, the second originating from the third cubital; clypcus triangularly produced an- teriorlj- . . . . Xyeh Dalm~i:~.
RUDOLF LEUCKART.
So many and such valuable contributions
to our knowledge of the morphology and
physiology of insects have come from the laboratories of the late Professor R. Lcucknrt of the 'University of Leipzig, that a. few words of appreciation of this master zoolo- gist's labors and of regret for his loss can not be amiss, in the pages of PSYCHE. Dr. Lenckart, who died in February in his seventy sixth year, was a zoologist of extraordinary range of study, touching in his work the anatomy and life-history of the most ividelj- separated groups of animals, working indeed through the whole animal realm from
-
Amoeba to Man.
His largest contributions
are those to the knowledge of the parasitic worms, but his enlightening studies of the micropylc and fertilization of insect eggs (1855)) the reproduction and development of the Pupipara (IS:$), the alternation of generations, and parthenogenesis among




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May 18~S.1 PSYCHE. 215
insects (1858 and later) and his exhaustive studies of the anatomy and life-history of the honey-bee (together with other contribu- tions) have made his name a familiar one to entomologists. In passing it is to be re- gretted that entomologists as a rule have far too little acquaintance with " general zoolo- gists" and their work, although it is a fact, and one which -vve must admit with humilia- tion, that most of our knowledge of insect morphology and physiology has come from
these general zoologists, men who arc not professed students of insects, i, e. entomolo- gists.
As a teacher Leuckart has been for years the best known and most besought zoolo-
gist of the world. If the names of the living well-known zoologists of Europe (excluding England and France) are called, surprisingly many of them arc in the list of Leuckart's students. Claus, Weismann, Btitschli, Hats- hek, Chun (who succeeds to Leuckart's chair) Korschelt, KrEipelin and others nearly as well known have worked in Lei.'ickart's labora- tories. In America, Whitman, Mark, Baur, Herrick, Stiles, Patten, Pratt, Wood, Parker, Child and others are one-time students of Leuckart ; and of the investigations made by these and the scores of other students in Leuckart's laboratories, a majority has had for subject the morphology of insects.
Of Lcuckart's relation to his students it is only necessary, and is no exaggeration, to say that hewas beloved by all of his students, and that the memory of him is a lasting
inspiration to each of them.
Vernon L Kellogg.
-Le&;g, 'March, 1898.
Guide to the Genera and Classification of the Orthoptera of North America north of Mexico. By SAMUEL H. SCUDDER. 90 pp. 8'. Contains keys for the determination of the higher groups as well as the (nearly 200) genera of our Ortl~optera, with full bibliographical aids to further study.
Sent by mail on receipt of price ($1.00). E. W. WHEELER, 1284 MASS. AvE., CAMBRIDGE, MASS. Published by Henry Holt & Co., New York. Scudder's Brief Guide to the Com-
moner Butterflies.
By SAMUEL H. SCUDDER. xi + 206 pp.
121110. $1.25.
An introduction, for the young student, to the names and something of the relationship and lives of our commoner butterflies. The author has selected for treatment the butter- flies, less than one hundred in number, which would be almost surely met with by an in- dustrious collector in a course of a year's or two year's work in our Northern States east of the Great Plains, and in Canada. While all the tpparatus necessary to identify these butterflies, in their earlier as well as perfect stage. is supplied, it is far from the author's puipose to treat then? a5 if they wereso many mere postage-stamps to he classified and ar- ranged in a cabinet. He has accordingly
added to the descriptions of the different spe- cies. their most obvious stao-es. some of the - .
curious 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.
By SAMUEL H. SCUDDER. 186 pp. 16mo.
$1.00.
In this book the author has tried to present in nntechnical language the story of the life of one of our most conspicuous American
butterflies. At the same time, by introduc- ing into the account of its anatomy, devel- opment, distribution, enemies, and seasonal changes some comparisons with the more or less dissimilar structure and life of other but- terflies, and particnlarly of our native forms, hc has endeavored to give, in some fashion and in brief space, a general account of the lives of the whole tribe. By using- a single butterfly as a special text, one may discourse at pleasure of ninny: and in the limited field which our native butterflies cover, this incth- od has a certain advantage from its sin~plicity and directness.




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216 J!='SYCH&?. [May 1898.
A NEW VOLUME OF PSYCHE
began in January, 1897, and will continue through three years. The subscription
price (payable in advance) is $5.00 per volume, or $2.00 per yeai, postpaid. Numbers are issued on the first day of each month. Libraries and individuals generally ordering through subscription agencies (which only fake 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 had for $5.00, unbound. Address Psyche, Cambridge, Mass.
Vols. 1-7, Complete, Unbound - - = - - - $33.00. Vols. 1-7, and Subscription to Volume 8 - = = - $37.00. Vol. 7 contains over 500 pp. and 10 plates, besides other illustrations. COLLECTIONS FOR SALE,
v . G
The following unusual offers are made for one month only:- Diptera-1940 specimens of 337 named species, together with 2100 unnamed, or in all 4040 specimens, $35.00. Orthoptera-312 specimens of 76 named species, with 364 unnamed, in all 676, $10.00. Native Coleoptera-4856 specimens of 1810 named species, $25.00.. Foreign Coleoptera-1000 specimens of 428 named species, $8.00. All neatly labelled and mounted, and in prime condition, and including many fine things from choice localities in west and south. Purchaser to pay transportation.
Address, C. F. BAKER, Auburn, Ala.
A. SMITH & SONS, 269 PEARL STREET, New York. -~ - --- --
GOODS FOR ENTOMOLOGISTS,
Klaeger and Carlsbad Insect Pins, Setting Boards, Folding Ncts, Locality and
Special Labels, Forceps, Sheet Cork, Ek. Other articles are being added, Send for List. The Butterflies of the Eastern United States and Canada. With special reference to New England.
By SAMUEL H. SCUDDER.
Illustrated with 96 plates of Butterflies, Caterpillars, Chrysalids, etc. (of which 41 are colored) which include about 2,000 lfigures besides Maps and portraits. 1958 Pages of Text
Vol. I. Introduction ; Nymphalidae.
Vol. 2.
Remaining Families of Butterflies.
Vol. 3.
Appendix, Plates and Index.
The set, 3 vols., royal 8vo. half levant, $75.~ net. HOUGHTON, MIFFLIN & CO., 4 Park St., Boston, Mass.



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