May 1S9: 



PSYCHE. 



215 



insects (1S5S 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 we must admit with humilia- 

 tion, that most of our knowledge of insect 

 morphology and physiology has come from 

 these general zoologists, men who are 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 aie in the list of Leuckart's 

 students. Claus, Weismann, Biitschli, Hats- 

 hek. Chun (who succeeds to Leuckart's chair) 

 Korsclielt, Kriipelin and others nearly as 

 well known have worked in Leuckart'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 majorit}' has had 

 for subject the morphology of insects. 



Of Leuckart's relation to his students it is 

 only necessary, and is no exaggeration, to 

 say that he was beloved by all of his students, 

 and that the memory of him is a lasting 

 inspiration to each of them. 



Vernon L. Kellogg. 

 Leipzig, March, iSgS. 



Guide to the Genera and Classification of the Orthoptera of North America 

 north of Mexico. By Samuel H. Scudder. 90 pp. S". 



Contains keys for the determination of the higher groups as well as the 

 (nearly 300) genera of our Orthoptera, with full bibliographical aids to further 

 study. Sent by mail on receipt of price ($1.00). 



E. W. WHEELER, 12S4 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. 



i2mo. $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 apparatus 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 them as if they were so many 

 mere postage-stamps to be classified and ar- 

 ranged in a cabinet. He has accordingly 

 added to the descriptions of the dift'erent spe- 

 cies, their most obvious stages, 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. i6mo. 



$1.00. 



In this book the author has tried to present 

 in untechnical 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 particularly of our native forms, 

 he 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 many ; and in the limited field 

 which our native butterflies cover, this meth- 

 od has a certain advantage from its simplicity 

 and directness. 



